Multi-point mooring FPSO umbilical cable terminal instrument pipe connecting device

Abstract

The invention discloses a multipoint mooring FPSO umbilical cable terminal instrument pipe connecting device which comprises a bottom plate and a first supporting leg, the first supporting leg is arranged on the bottom plate, a sleeve is connected to the first supporting leg, the end, away from the first supporting leg, of the sleeve is inserted into a second supporting leg, and the end, away from the second supporting leg, of the sleeve is connected with the first supporting leg. The second supporting leg is rotationally arranged on the sleeve; an extension support is arranged on the second supporting leg, a connecting panel is connected to the side, away from the second supporting leg, of the extension support, and an instrument pipe connector assembly is arranged on the connecting panel so that the umbilical cable terminal instrument pipe can be connected to the instrument pipe connector assembly. According to the multipoint mooring FPSO umbilical cable terminal instrument pipe connecting device, the connection problem of an instrument pipe from an underwater umbilical cable and an instrument pipe from an upper facility chemical injection skid and a hydraulic power unit of a floating production facility is solved. According to the deepwater multi-point mooring FPSO umbilical cable terminal instrument pipe, more space is saved in connection, and interference on facilities around an ascending channel is avoided.

Description

Technical Field

[0001] The present invention belongs to the field of offshore oil floating production facilities, and particularly relates to a connecting device for the instrument pipes at the terminal of the umbilical cable of a deep-water multi-point mooring FPSO. Background Art

[0002] At present, in the deep-sea oil development mode, the combination of offshore oil floating production facilities and subsea wells has become a typical development mode. The injection of chemical agents and the transmission of hydraulic power between the chemical injection skid and the hydraulic power unit of the floating production facility (FPSO) and the subsea well need to be completed through umbilical cables. After the umbilical cables are lifted to the floating production facility, it is necessary to connect the instrument pipes from the chemical injection skid and the hydraulic power unit of the upper facilities of the floating production facility.

[0003] However, a multi-point mooring FPSO generally has a large number of subsea wells, so the number of umbilical cables is also large. The umbilical cable protection pipes are generally located on the starboard riser platform of the FPSO and are arranged in a straight line. Since there are other production and water injection risers on the FPSO riser platform in addition to the umbilical cables, the space on the riser platform is very tight. When lifting the instrument pipes, it will interfere with the facilities around the rising channel.

[0004] Therefore, there is an urgent need to design a connecting device for the instrument pipes at the terminal of the umbilical cable of a multi-point mooring FPSO to solve the above-mentioned problems. Summary of the Invention

[0005] In order to solve the technical problem mentioned in the background art that there are other production and water injection risers on the FPSO riser platform in addition to the umbilical cables, so the space on the riser platform is very tight, and when lifting the instrument pipes, it will interfere with the facilities around the rising channel, a connecting device for the instrument pipes at the terminal of the umbilical cable of a multi-point mooring FPSO is provided to solve the problems of connecting the instrument pipes and not interfering with other facilities.

[0006] To achieve the above object, the specific technical solution of the connecting device for the instrument pipes at the terminal of the umbilical cable of the present invention is as follows: A connecting device for the instrument pipes at the terminal of the umbilical cable of a multi-point mooring FPSO includes a bottom plate and a first leg. The first leg is arranged on the bottom plate, and a sleeve is connected to the first leg. One end of the sleeve away from the first leg is inserted into a second leg, so that the second leg is rotatably arranged on the sleeve; an extension bracket is arranged on the second leg, a connecting panel is connected to one side of the extension bracket away from the second leg, and an instrument pipe joint assembly is arranged on the connecting panel, so that the instrument pipe at the terminal of the umbilical cable is connected to the instrument pipe joint assembly.

[0007] Furthermore, the instrument pipe joint assembly includes a first instrument pipe joint and a second instrument pipe joint. Both the first instrument pipe joint and the second instrument pipe joint are fixedly connected to the connection panel, and both the first instrument pipe joint and the second instrument pipe joint are connected to the umbilical cable terminal instrument pipe.

[0008] Furthermore, the first instrument pipe joint and the second instrument pipe joint are arranged at intervals and are parallel to each other.

[0009] Furthermore, the first leg is vertically connected to the bottom plate, and a plurality of support plates are connected between the first leg and the bottom plate to fixedly connect the first leg to the bottom plate.

[0010] Furthermore, the first leg is connected to the center point of the bottom plate.

[0011] Furthermore, one end of the first leg away from the bottom plate is fixedly connected inside the sleeve, so that the sleeve is stably arranged on the first leg.

[0012] Furthermore, one end of the sleeve away from the first leg is inserted into the second leg, and the end of the second leg inserted into the sleeve abuts against the first leg.

[0013] Furthermore, through holes are symmetrically formed in the sleeve, bolts are inserted into the through holes, and the bolts sequentially pass through the through holes and the second leg to limit the second leg.

[0014] Furthermore, an extension bracket is welded to one end of the second leg away from the sleeve, and a connection panel is welded to the extension bracket.

[0015] Furthermore, the connection position between the extension bracket of the connection panel and the first instrument pipe joint and the second instrument pipe joint is arranged in a staggered manner.

[0016] The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device of the present invention has the following advantages: By connecting the first leg to the bottom plate, connecting the sleeve to the first leg, inserting the second leg into the sleeve to realize the rotation of the second leg, connecting bolts to the sleeve and inserting the bolts into the second leg to further limit the rotation of the second leg, connecting the second leg to the connection panel through the extension bracket, and connecting the instrument pipe joint assembly to the connection panel, the connection problem of the instrument pipes in the umbilical cable from underwater and the instrument pipes from the chemical injection skid and the hydraulic power unit of the upper facilities of the floating production facility is solved. This application makes the connection of the umbilical cable terminal instrument pipes of the deep-water multi-point mooring FPSO more space-saving and avoids interfering with the facilities around the rising channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the multi-point mooring FPSO umbilical cable terminal instrument pipe connection device of the present invention; Figure 2 This is the front view of the connecting device for the instrument pipes at the terminal of the multi-point mooring FPSO umbilical cable of the present invention.

[0018] Description of the markings in the figure: 1. Base plate; 2. First leg; 3. Second leg; 4. Sleeve; 5. Support plate; 6. Extension bracket; 7. Connection panel; 8. Instrument pipe joint assembly; 81. First instrument pipe joint; 82. Second instrument pipe joint; 9. Bolt. Specific embodiments

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0020] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0021] Next, refer to the attached Figure 1 to the attached Figure 2 Describe the connecting device for the instrument pipes at the terminal of the multi-point mooring FPSO umbilical cable of the present invention.

[0022] As Figure 1 shown, the connecting device for the instrument pipes at the terminal of the multi-point mooring FPSO umbilical cable in the present invention includes a base plate 1 and a first leg 2. The first leg 2 is arranged on the base plate 1. A sleeve 4 is connected to the first leg 2. One end of the sleeve 4 away from the first leg 2 is inserted into the second leg 3 so that the second leg 3 is rotatably arranged on the sleeve 4. An extension bracket 6 is arranged on the second leg 3. A connection panel 7 is connected to one side of the extension bracket 6 away from the second leg 3. An instrument pipe joint assembly 8 is arranged on the connection panel 7 so that the instrument pipe at the umbilical cable terminal is connected to the instrument pipe joint assembly 8.

[0023] By connecting the first leg 2 to the bottom plate 1, connecting the sleeve 4 to the first leg 2, and inserting the second leg 3 into the sleeve 4, the rotation of the second leg 3 is realized. A bolt 9 is connected to the sleeve 4, and the bolt 9 is inserted into the second leg 3, thereby restricting the rotation of the second leg 3. The second leg 3 is connected to the connection panel 7 through the extension bracket 6, and the instrument pipe joint assembly 8 is connected to the connection panel 7, solving the connection problem of the instrument pipes in the umbilical cable from underwater and the instrument pipes from the chemical injection skid and the hydraulic power unit of the upper facilities of the floating production facility. This application makes the connection of the instrument pipes at the umbilical cable terminal of this deep-water multi-point mooring FPSO more space-saving and avoids interfering with the facilities around the rising channel.

[0024] Further, as Figure 1 and Figure 2 shown, the instrument pipe joint assembly 8 includes a first instrument pipe joint 81 and a second instrument pipe joint 82. Both the first instrument pipe joint 81 and the second instrument pipe joint 82 are fixedly connected to the connection panel 7, and umbilical cable terminal instrument pipes are connected to both the first instrument pipe joint 81 and the second instrument pipe joint 82; the first instrument pipe joint 81 and the second instrument pipe joint 82 are arranged at intervals and are parallel to each other between the first instrument pipe joint 81 and the second instrument pipe joint 82.

[0025] In this embodiment, preferably, both the first instrument pipe joint 81 and the second instrument pipe joint 82 are composed of single-point joints, and the first instrument pipe joint 81 and the second instrument pipe joint 82 are respectively fixedly connected to one side of the connection panel 7, so that the umbilical cable terminal instrument pipes are connected to the first instrument pipe joint 81 and the second instrument pipe joint 82. As a preferred embodiment, multiple groups of instrument pipe joints can be set on the connection panel according to requirements for the instrument pipe joint assembly 8, thereby realizing the matching with the number of umbilical cable terminal instrument pipes.

[0026] Further, as Figure 1 shown, the first leg 2 is vertically connected to the bottom plate 1, and a plurality of support plates 5 are connected between the first leg 2 and the bottom plate 1 to fixedly connect the first leg 2 to the bottom plate 1; the first leg 2 is connected to the center point of the bottom plate 1; one end of the first leg 2 far from the bottom plate 1 is fixedly connected to the inside of the sleeve 4 to stably arrange the sleeve 4 on the first leg 2; one end of the sleeve 4 far from the first leg 2 is inserted into the second leg 3, and one end of the second leg 3 inserted into the sleeve 4 abuts against the first leg 2.

[0027] In this embodiment, preferably, the first leg 2 is vertically welded to the center point on the upper surface of the bottom plate 1, and the placement position of the bottom plate 1 is determined according to the position of the umbilical cable terminal instrument pipe; four support plates 5 are welded on the outer surface of the first leg 2, and the included angles between the four support plates 5 are all 90 degrees. The support plates 5 are welded to the bottom plate 1 to ensure that the first leg 2 is stably arranged on the bottom plate 1.

[0028] The first leg 2 is inserted into the sleeve 4 at one end away from the bottom plate 1 and is welded to the sleeve 4 to ensure that the sleeve 4 is fixedly connected to the first leg 2. The second leg 3 is inserted above the sleeve 4, and one end of the second leg 3 inserted into the sleeve 4 abuts against the first leg 2, enabling the second leg 3 to rotate horizontally within the sleeve 4.

[0029] Furthermore, as Figure 1 shown, through holes are symmetrically formed on the sleeve 4, bolts 9 are inserted into the through holes, and the bolts 9 sequentially pass through the through holes and the second leg 3 to limit the second leg 3; an extension bracket 6 is welded to one end of the second leg 3 away from the sleeve 4, and a connection panel 7 is welded to the extension bracket 6; the connection position between the extension bracket 6 of the connection panel 7 and the connection positions of the first instrument pipe joint 81 and the second instrument pipe joint 82 is arranged in a staggered manner.

[0030] In this embodiment, preferably, through holes are symmetrically formed on the outer wall of the sleeve 4, openings are formed on the second leg 3, bolts 9 are inserted into the through holes, and the bolts 9 sequentially pass through the through holes and the openings, thereby ensuring that the second leg 3 does not rotate. As a preferred embodiment, multiple bolts 9 can be arranged on the sleeve 4 according to requirements to further limit the rotation of the second leg 3.

[0031] An extension bracket 6 is perpendicularly welded to the outer wall of one end of the second leg 3 away from the sleeve 4, the extension bracket 6 is welded to one side away from the second leg 3 and is connected to the connection panel 7, and the extension bracket 6 is connected to the side of the connection panel 7 away from the instrument pipe joint assembly 8. The connection position of the extension bracket 6 should ensure that the connection position of the instrument pipe joint assembly 8 is avoided to ensure the normal use of the instrument pipe joint assembly.

[0032] As a preferred embodiment, the connection panel 7 is located above the opening on the deck, the umbilical cable is fixed to the opening on the deck. When the instrument pipe of the umbilical cable is not connected to the joint of the instrument pipe joint assembly 8, the second leg 3 is rotated so that the connection panel 7 does not rotate directly above the opening on the deck to facilitate the lifting of the umbilical cable; when the instrument pipe of the umbilical cable needs to be connected to the joint, the second leg 3 is rotated again so that the connection panel 7 is located directly above the opening on the deck to facilitate the connection of the instrument pipe.

[0033] The construction steps of the multi-point mooring FPSO umbilical cable terminal instrument pipe connection device of the present application are as follows: S1, weld the first leg 2 and the support plate 5 on the bottom plate 1, and pre-drill through holes on the sleeve 4, and weld the lower end of the sleeve 4 to the first leg 2; S2, weld the second leg 3 and the extension bracket 6 together; S3, on the basis of S1, insert the second leg 3 completed in S2 into the sleeve 4, and use bolts 9 to fix the second leg 3 to prevent the second leg 3 from rotating; S4. Install the first instrument pipe joint 81 and the second instrument pipe joint 82 on the connection panel 7; S5. Fix the connection panel 7 to the extension bracket 6 by means of bolt connection or welding; S6. Weld the base 1 to the deck to complete the overall installation.

[0034] Based on the multi-point mooring FPSO umbilical cable terminal instrument pipe connection device, by connecting the first leg 2 to the bottom plate 1, connecting the sleeve 4 to the first leg 2, inserting the second leg 3 into the sleeve 4 to realize the rotation of the second leg 3, a bolt 9 is connected to the sleeve 4 and inserted into the second leg 3 to further limit the rotation of the second leg 3. The second leg 3 is connected to the connection panel 7 through the extension bracket 6, and the first instrument pipe joint 81 and the second instrument pipe joint 82 are connected to the connection panel 7, solving the connection problem of the instrument pipes in the umbilical cable from underwater and the instrument pipes from the chemical injection skid and hydraulic power unit of the upper facilities of the floating production facility. This application makes the connection of the deep-water multi-point mooring FPSO umbilical cable terminal instrument pipe more space-saving and avoids interfering with the facilities around the rising channel.

[0035] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A multi-point mooring FPSO umbilical cable terminal instrument pipe connection device, characterized in that: It includes a base plate and a first leg, the first leg is arranged on the base plate, a sleeve is connected to the first leg, the end of the sleeve away from the first leg is inserted into the second leg, so that the second leg can be rotatably arranged on the sleeve; an extension bracket is arranged on the second leg, the side of the extension bracket away from the second leg is connected to a connecting panel, and an instrument pipe joint assembly is arranged on the connecting panel, so that the instrument pipe at the terminal of the umbilical cable is connected to the instrument pipe joint assembly.

2. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 1, characterized in that: The instrument pipe joint assembly comprises a first instrument pipe joint and a second instrument pipe joint, both of which are fixedly connected to the connection panel, and both of which are connected to the umbilical cable terminal instrument pipe.

3. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 2, characterized in that: The first instrument pipe joint and the second instrument pipe joint are arranged at intervals, and the first instrument pipe joint and the second instrument pipe joint are parallel to each other.

4. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 1, characterized in that: The first leg is vertically connected to the bottom plate, and a plurality of supporting plates are connected between the first leg and the bottom plate so that the first leg is fixedly connected to the bottom plate.

5. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 1, characterized in that: The first leg is connected to the center point of the base plate.

6. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 1, characterized in that: One end of the first leg away from the bottom plate is fixedly connected to the inside of the sleeve, so that the sleeve is stably arranged on the first leg.

7. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 6, characterized in that: One end of the sleeve away from the first leg is inserted into the second leg, and one end of the second leg inserted into the sleeve abuts against the first leg.

8. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 7, characterized in that: The sleeve is symmetrically provided with through holes, bolts are inserted into the through holes, and the bolts pass through the through holes and the second supporting leg in sequence to limit the position of the second supporting leg.

9. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 8, characterized in that: An extension bracket is welded to one end of the second leg away from the sleeve, and a connecting panel is welded to the extension bracket.

10. The multi-point mooring FPSO umbilical cable terminal instrument pipe connection device according to claim 9, characterized in that: The connection positions of the extension bracket connection of the connection panel and the first instrument pipe joint and the second instrument pipe joint are staggered.

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