Holding and clamping type vertical pipe suspension device and mounting method thereof

Abstract

The invention relates to an embracing and clamping type stand pipe hanging device and an installation method thereof, and belongs to the technical field of marine equipment, the device comprises a plurality of hanging units, each hanging unit comprises a stand pipe butt joint assembly and a pile leg fixing assembly, the stand pipe butt joint assembly comprises a stand pipe unit, and the pile leg fixing assembly comprises a pile leg fixing assembly. The outer wall of each vertical pipe unit is provided with a clamping sleeve and a clamping piece annular array, and the clamping piece annular arrays are detachably connected to the clamping sleeves. The pile leg fixing assemblies of the multiple suspension units are sequentially welded to the outer wall of a pile leg of the offshore oil and gas production jacket platform from top to bottom, and the hoops of the vertical pipe butt joint assemblies of the multiple suspension units are clamped to the clamping piece annular arrays of the vertical pipe butt joint assemblies. The upper vertical pipes and the lower vertical pipes are connected into a whole pipe which is through from top to bottom through the adjacent vertical pipe units, and the whole pipe is hung on a pile leg.

Description

Technical Field

[0001] The invention belongs to the technical field of marine equipment, and in particular relates to a clamping type riser suspension device and an installation method thereof. Background Art

[0002] The offshore oil and gas production jacket platform is the most widely used platform form for offshore oil and gas production. Due to unforeseen oil field access during design, most offshore oil and gas production jacket platforms do not have pre-reserved or pre-installed risers and cable protection pipes, or only pre-installed pipe clamp bases, and offshore risers and cable protection pipes need to be installed later during development.

[0003] At present, the post-installation work of the riser of the offshore oil and gas production jacket platform mainly includes marine organisms cleaning, pipe clamp installation, and riser installation. The existing post-installation methods of the offshore oil and gas production jacket platform all require the centering, opening, and closing of the pipe clamp. For the offshore oil and gas production jacket platform with a water depth of 100 meters, saturation diving operations are required. Although the post-installation measures of the riser such as "one clamp and two pipes" have been applied in offshore oil and gas field development projects, the overall cost is high and has become the main factor affecting the economic development of marginal oil fields.

[0004] However, the current installation of risers on offshore oil and gas production jacket platforms generally uses hanging flanges as the load-bearing devices for the entire riser, which requires various processes such as cleaning of marine organisms and alignment. The installation process is relatively complicated, which is not only time-consuming and labor-intensive, but also has a high overall difficulty. Summary of the invention

[0005] In view of the above problems, an object of the present invention is to provide a clamping type riser suspension device and an installation method thereof, so as to solve the problem that it is difficult to install the riser using a suspension flange.

[0006] To achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention discloses a clamping type riser suspension device, comprising a plurality of suspension units, which are arranged on the pile legs of an offshore oil and gas production jacket platform in sequence from top to bottom, and are characterized in that each suspension unit comprises A riser docking assembly comprises a riser unit, the outer wall of the riser unit is provided with a ferrule and a card annular array, and the card annular array is detachably connected to the ferrule; A pile leg fixing assembly, comprising a clamp and a welding fixing plate, wherein the welding fixing plate is an arc-shaped plate, and the clamp is connected to the welding fixing plate; Among them, several pile leg fixing assemblies of the suspension units are welded to the outer wall of the pile leg of the offshore oil and gas production jacket platform in sequence from top to bottom through the welding fixing plate, and several clamps of the pile leg fixing assemblies of the suspension units are clamped to the card ring array of the riser docking assembly; The upper and lower ports of the riser unit are used to connect the upper riser and the lower riser respectively, so as to connect the multiple upper risers and the lower risers through the adjacent riser units into a whole pipe that is connected from top to bottom and is suspended on the pile legs.

[0007] Preferably, the card annular array is located below the ferrule, and the card annular array and the ferrule are adjacent to each other on the riser unit.

[0008] Preferably, the ferrule is formed by splicing a left ferrule part and a right ferrule part, which are spliced ​​and fastened by bolts to obtain the ferrule, and the outer contour of the ferrule is large at the top and small at the bottom, in the shape of an inverted truncated cone.

[0009] Preferably, the card annular array is composed of a plurality of card units, and the top of each card unit of the card annular array extends upward and is movably placed on the lower part of the card sleeve; The inner wall of the clamp is provided with a plurality of movable sheet slots at intervals, and the plurality of movable sheet slots on the inner wall of the clamp corresponds to the plurality of card units of the card ring array one by one; the clamp of the pile leg fixing assembly is respectively connected to the plurality of card units of the card ring array of the riser docking assembly through the plurality of movable sheet slots, so as to realize the connection between the clamp of the pile leg fixing assembly and the card ring array of the riser docking assembly; When the clamp of the pile leg fixing assembly is clamped on the card ring array of the riser docking assembly, the top of each card unit of the card ring array presses the lower part of the clamping sleeve respectively, thereby achieving the fastening of the card ring array and the clamping sleeve.

[0010] Preferably, each of the card units comprises a fixed sheet, a movable sheet, a pivoting sheet and a bolt. The front side of the fixing plate is used for welding on the outer wall of the riser unit. The pivoting piece is fixed on the back side of the fixing piece; The bottom end of the movable sheet is pivotally connected to the pivoting sheet via bolts; The top end of the movable sheet is bent inwardly, so that it is bent at a position close to the top end and bulges outward at the bending position to form a clamping head end; Each movable piece card slot on the inner wall of the clamp is correspondingly clamped on the card head end of each card unit of the card annular array.

[0011] Preferably, several card units of the card ring array form a ring with a notch around the outer wall of the riser unit; the clamp is a circular tube with a notch, and when the clamp of the pile leg fixing assembly is respectively clamped on several card units of the card ring array of the riser docking assembly through several movable plate slots, the notch of the clamp corresponds to the notch formed by several card units around the outer wall of the riser unit.

[0012] Furthermore, the pile leg fixing assembly also includes a support reinforcement plate, and the clamp and the welding fixing plate are connected via the support reinforcement plate.

[0013] Furthermore, a jacket is disposed at the lower part of the offshore oil and gas production jacket platform, a plurality of jackets are passed through the jacket, and a plurality of pile legs are respectively arranged at the corners of the jacket.

[0014] Furthermore, support rods are arranged between adjacent legs of the conductor frame.

[0015] In a second aspect, the present invention further discloses a method for installing a clamping type riser suspension device, which is used to install the clamping type riser suspension device, comprising: Step A: a plurality of pile leg fixing assemblies of the suspension units are sequentially welded from top to bottom on the outer wall of the pile leg of the offshore oil and gas production jacket platform through the welding fixing plate; Step B: clamping the clamps of the pile leg fixing assemblies of the plurality of suspension units to the card annular array of the riser docking assembly by hoisting, including the following steps: Step B1: clamping the fixing plates of several card units onto the outer walls of the riser units of the riser docking assembly to form a card ring array; Step B2: splice the left ferrule part and the right ferrule part on the outer wall of the riser unit above the card ring array and fasten them with bolts to form a ferrule; Step B3: placing the riser units of the riser docking assemblies of the plurality of suspension units into the clamps of the pile leg fixing assembly by hoisting, and lowering the riser units so that the plurality of card units of the card annular array of the riser docking assembly correspond to the plurality of movable sheet card slots of the clamps of the pile leg fixing assembly respectively, until the clamps of the pile leg fixing assembly are clamped with the card annular array of the riser docking assembly; Step C: respectively connecting the upper riser and the lower riser to the upper and lower ports of a plurality of the riser units, and then connecting the plurality of upper riser and the lower riser through the riser units into a whole pipe that is connected from top to bottom.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (I) The present invention discloses a clamping type riser suspension device, comprising a plurality of suspension units, each of which comprises a riser docking assembly and a pile leg fixing assembly, the riser docking assembly comprises a riser unit, a clamping sleeve and a card ring array are arranged on the outer wall of the riser unit, and the card ring array is detachably connected to the clamping sleeve; the pile leg fixing assembly comprises a clamping hoop and a welding fixing plate, the welding fixing plate is an arc-shaped plate, and the clamping hoop and the welding fixing plate are connected; wherein the pile leg fixing assemblies of the plurality of suspension units are sequentially welded from top to bottom on the outer wall of the pile leg of the offshore oil and gas production jacket platform through the welding fixing plate, and the clamps of the riser docking assemblies of the plurality of suspension units are clamped on the card ring array of the riser docking assembly; the upper and lower ports of the riser unit are respectively used for docking the upper riser and the lower riser, and then the plurality of upper risers and the lower risers are connected through adjacent riser units into a whole pipe that is interpenetrating from top to bottom and is suspended on the pile leg.

[0017] (ii) The present invention discloses an efficient installation method for a riser, comprising: welding the pile leg fixing assemblies of a plurality of suspension units to the outer wall of the pile leg of an offshore oil and gas production jacket platform in sequence from top to bottom by welding fixing plates; clamping the clamps of the pile leg fixing assemblies of the plurality of suspension units to the card ring array of the riser docking assembly by hoisting; docking the upper riser and the lower riser to the upper and lower ports of a plurality of riser units respectively, and then connecting the plurality of upper risers and the lower risers to form a whole pipe that is connected from top to bottom through the riser units, thereby realizing efficient installation of the riser suspension, significantly reducing the installation difficulty, and solving the problem of the high difficulty of installing the riser by using the suspension flange at present. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a clamping type riser suspension device provided by an embodiment of the present invention being hung on a pile leg of an offshore oil and gas production jacket platform; Figure 2 It is a front view of a suspension unit of a clamping type riser suspension device provided in an embodiment of the present invention; Figure 3 yes Figure 2 Back view of ; Figure 4 yes Figure 2 A schematic diagram of the structure of the pile leg fixing assembly; Figure 5 yes Figure 2 A schematic diagram of the structure of the riser docking assembly, wherein the ferrule 12 and the card annular array 13 are arranged on the riser unit 11; Figure 6 yes Figure 5 Schematic diagram of the back side; Figure 7 is a schematic structural diagram of a ferrule before splicing provided by an embodiment of the present invention; Figure 8 is a schematic structural diagram of a spliced ​​ferrule provided in an embodiment of the present invention; Fig. 9 is a schematic diagram of the structure of the card ring array 13; Fig.10 yes Fig. 9 A schematic diagram of the structure of one of the card units.

[0019] Description of reference numerals: 100 - offshore oil and gas production jacket platform, 101 - jacket, 102 - pile leg, 103 - jacket, 104 - strut; 200 - suspension unit; 1-riser pipe docking assembly, 11-riser pipe unit; 12-card sleeve, 121-left card sleeve part, 122-right card sleeve part; 13-card annular array, 130-card unit, 131-fixed sheet, 132-movable sheet, 133-pivot sheet, 134-bolt, 135-card head end; 2-pile leg fixing assembly, 21-hoop, 210-movable plate slot, 22-welding fixing plate, 23-support reinforcement plate. DETAILED DESCRIPTION

[0020] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0021] In order to solve the problem that it is difficult to install a riser by using a hanging flange, the present invention discloses a clamping type riser hanging device and an installation method thereof, wherein the device comprises a plurality of hanging units, each of which comprises a riser docking assembly and a pile leg fixing assembly, the riser docking assembly comprises a riser unit, a clamping sleeve and a card annular array are arranged on the outer wall of the riser unit, and the card annular array is detachably connected to the clamping sleeve; the pile leg fixing assembly comprises a clamping hoop and a welding fixing plate, the welding fixing plate is an arc-shaped plate, and the clamping hoop is connected to the welding fixing plate; wherein the pile leg fixing assemblies of the plurality of hanging units are sequentially welded from top to bottom on the outer wall of the pile leg of the offshore oil and gas production jacket platform through the welding fixing plate, and the clamping hoop of the riser docking assemblies of the plurality of hanging units is clamped on the card annular array of the riser docking assembly; the upper and lower ports of the riser unit are respectively used for docking the upper riser and the lower riser, and then the plurality of upper risers and the lower risers are connected through adjacent riser units into a whole pipe that is interpenetrating from top to bottom and is hung on the pile leg.

[0022] Example 1: A clamp-type riser suspension device Embodiment 1 of the present invention provides a clamping type riser suspension device, and its structure and connection relationship are described in detail below with reference to the accompanying drawings.

[0023] refer to Figures 1 to 6 The clamping type riser suspension device includes a plurality of suspension units 200, which are sequentially arranged from top to bottom on the pile legs 102 of the offshore oil and gas production jacket platform 100, and is characterized in that each suspension unit 200 includes a riser docking assembly 1 and a pile leg fixing assembly 2.

[0024] The riser docking assembly 1 comprises a riser unit 11, on the outer wall of which a ferrule 12 and a card annular array 13 are provided, and the card annular array 13 is detachably connected to the ferrule 12; The pile leg fixing assembly 2 includes a clamp 21 and a welding fixing plate 22, wherein the welding fixing plate 22 is an arc-shaped plate, and the clamp 21 and the welding fixing plate 22 are connected; Among them, the pile leg fixing components 2 of the plurality of suspension units 200 are sequentially welded from top to bottom on the outer wall of the pile leg 102 of the offshore oil and gas production jacket platform 100 through the welding fixing plate 22, and the clamps 21 of the pile leg fixing components 2 of the plurality of suspension units 200 are clamped on the card annular array 13 of the riser docking component 1; The upper and lower ports of the riser unit 11 are used to connect the upper riser and the lower riser, respectively, so that multiple upper risers and lower risers are connected through adjacent riser units 11 into a whole pipe that is connected from top to bottom and is suspended on the pile leg 102.

[0025] In order to facilitate the clamping, the card annular array 13 is located below the clamping sleeve 12 , and the card annular array 13 and the clamping sleeve 12 are adjacent to each other on the riser unit 11 .

[0026] refer to Figure 7 and Figure 8 The ferrule 12 is formed by splicing a left ferrule part 121 and a right ferrule part 122. The left ferrule part 121 and the right ferrule part 122 are spliced ​​and fastened by bolts to obtain the ferrule 12. The outer contour of the ferrule 12 is large at the top and small at the bottom, and is in the shape of an inverted truncated cone.

[0027] refer to Fig. 9 The card ring array 13 is composed of a plurality of card units 130, and the top of each card unit 130 of the card ring array 13 extends upward and is movably placed on the lower part of the card sleeve 12; The inner wall of the clamp 21 is provided with a plurality of movable sheet slots 210 at intervals, and the plurality of movable sheet slots 210 on the inner wall of the clamp 21 correspond one-to-one to the plurality of card units 130 of the card ring array 13; the clamp 21 of the pile leg fixing assembly 2 is respectively connected to the plurality of card units 130 of the card ring array 13 of the riser docking assembly 1 through the plurality of movable sheet slots 210, so as to realize the connection between the clamp 21 of the pile leg fixing assembly 2 and the card ring array 13 of the riser docking assembly 1; When the clamp 21 of the pile leg fixing assembly 2 is clamped on the card ring array 13 of the riser docking assembly 1, the top of each card unit 130 of the card ring array 13 presses the lower part of the sleeve 12 respectively, thereby achieving the fastening of the card ring array 13 and the sleeve 12.

[0028] refer to Fig.10 Each of the card units 130 includes a fixed sheet 131, a movable sheet 132, a pivoting sheet 133 and a bolt 134. The front side of the fixing plate 131 is used for welding to the outer wall of the riser unit 11. The pivoting plate 133 is fixed to the back side of the fixing plate 131; The bottom end of the movable plate 132 is pivotally connected to the pivot plate 133 via a bolt 134; The top end of the movable piece 132 is bent inwardly, so as to bend at a position close to the top end and bulge outward at the bending position to form a clamping head end 135; Each movable piece slot 210 on the inner wall of the clamp 21 is correspondingly clamped on the clamp head end 135 of each card unit 130 of the card annular array 13 .

[0029] In order to facilitate the insertion of the riser unit 11 into the hoop 21, the outer diameter of the riser unit 11 is smaller than the inner diameter of the hoop 21. Preferably, the hoop 21 is designed with a notch, that is, the hoop 21 is a circular tube with a notch. Accordingly, the plurality of card units 130 of the card annular array 13 surround the outer wall of the riser unit 11 to form a ring with a notch. When the clamp 21 of the pile leg fixing assembly 2 is respectively clamped on the several card units 130 of the card ring array 13 of the riser docking assembly 1 through the several movable plate slots 210, the gap of the clamp 21 corresponds to the gap formed by the several card units 130 around the outer wall of the riser unit 11.

[0030] In order to control the distance between the pile legs 102 and the plurality of upper risers and the lower risers connected through the adjacent riser units 11 to form a whole pipe that is interpenetrating from top to bottom, a specific implementation is that the pile leg fixing assembly 2 also includes a support reinforcement plate 23, and the clamp 21 and the welding fixing plate 22 are connected through the support reinforcement plate 23.

[0031] The welding fixing plate 22 and the supporting reinforcing plate 23 are used to connect and fix the clamp 21 to the offshore oil and gas production jacket platform 100 .

[0032] Specifically, in order to prevent the inner wall of the ferrule 12 from wearing the outer wall of the riser unit 11 when the ferrule 12 slides, the outer surface of the riser unit 11 is provided with chloroprene rubber.

[0033] In order to prevent the clamp 21 from wearing the ferrule 12, the outer surface of the ferrule 12 is provided with chloroprene rubber.

[0034] Specifically, a jacket 101 is disposed at the lower part of the offshore oil and gas production jacket platform 100 . A plurality of jackets 103 are passed through the jacket 101 . A plurality of legs 102 are respectively disposed at the corners of the jacket 101 .

[0035] In order to improve the stability of the offshore oil and gas production jacket platform 100 , struts 104 are disposed between adjacent legs 102 of the jacket 101 .

[0036] Embodiment 2: A method for installing a clamp-type riser suspension device Embodiment 2 of the present invention provides a method for installing a clamping type riser suspension device, which is used to install the clamping type riser suspension device of embodiment 1, referring to Figure 1 , the installation method includes the following steps: Step A: a plurality of pile leg fixing assemblies 2 of the suspension unit 200 are sequentially welded from top to bottom on the outer wall of the pile leg 102 of the offshore oil and gas production jacket platform 100 through the welding fixing plate 22; Step B: clamping the clamps 21 of the pile leg fixing assemblies 2 of the plurality of suspension units 200 with the card ring array 13 of the riser docking assembly 1 by hoisting, including the following steps: Step B1: The fixing pieces 131 of a plurality of card units 130 are respectively clamped onto the outer wall of the riser unit 11 of the riser docking assembly 1 to form a card ring array 13; Step B2: splice the left ferrule part 121 and the right ferrule part 122 on the outer wall of the riser unit 11 above the card ring array 13 and fasten them with bolts to form a ferrule 12; Step B3: placing the riser units 11 of the riser docking assembly 1 of the plurality of suspension units 200 into the clamping hoop 21 of the pile leg fixing assembly 2 by hoisting, and lowering the riser units 11 so that the plurality of card units 130 of the card ring array 13 of the riser docking assembly 1 correspond to the plurality of movable sheet card slots 210 of the clamping hoop 21 of the pile leg fixing assembly 2 respectively, until the clamping hoop 21 of the pile leg fixing assembly 2 is clamped with the card ring array 13 of the riser docking assembly 1; Step C: respectively connect the upper riser and the lower riser to the upper and lower ports of a plurality of the riser units 11, and then connect the plurality of upper riser and the lower riser through the riser units 11 to form a whole pipe that is connected from top to bottom.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamping type riser suspension device, comprising a plurality of suspension units (200), wherein the plurality of suspension units (200) are arranged in sequence from top to bottom on a pile leg (102) of an offshore oil and gas production jacket platform (100), characterized in that: Each suspension unit (200) comprises A riser pipe docking assembly (1) comprises a riser pipe unit (11), wherein a clamping sleeve (12) and a card annular array (13) are provided on the outer wall of the riser pipe unit (11), and the card annular array (13) is detachably connected to the clamping sleeve (12); A pile leg fixing assembly (2) comprises a hoop (21) and a welding fixing plate (22), wherein the welding fixing plate (22) is an arc-shaped plate, and the hoop (21) and the welding fixing plate (22) are connected; wherein the pile leg fixing assemblies (2) of the plurality of suspension units (200) are welded sequentially from top to bottom on the outer wall of the pile leg (102) of the offshore oil and gas production jacket platform (100) via the welding fixing plates (22), and the clamps (21) of the pile leg fixing assemblies (2) of the plurality of suspension units (200) are clamped on the card annular array (13) of the riser docking assembly (1); The upper and lower ports of the riser unit (11) are used to connect the upper riser and the lower riser, respectively, so that a plurality of upper risers and lower risers are connected through adjacent riser units (11) to form a whole pipe that is connected from top to bottom and is suspended on the pile leg (102).

2. The clamp-type riser suspension device according to claim 1 is characterized in that: The card annular array (13) is located below the card sleeve (12), and the card annular array (13) and the card sleeve (12) are closely adjacent to each other on the riser unit (11).

3. The clamp-type riser suspension device according to claim 1 is characterized in that: The ferrule (12) is formed by splicing a left ferrule part (121) and a right ferrule part (122). The left ferrule part (121) and the right ferrule part (122) are spliced ​​and fastened by bolts to obtain the ferrule (12). The outer contour of the ferrule (12) is large at the top and small at the bottom, and is in the shape of an inverted truncated cone.

4. The clamp-type riser suspension device according to claim 1 is characterized in that: The card annular array (13) is composed of a plurality of card units (130), and the top end of each card unit (130) of the card annular array (13) extends upward and is movably placed on the lower part of the card sleeve (12); The inner wall of the clamp (21) is provided with a plurality of movable plate slots (210) at intervals, and the plurality of movable plate slots (210) on the inner wall of the clamp (21) correspond one-to-one to the plurality of card units (130) of the card annular array (13); the clamp (21) of the pile leg fixing assembly (2) is respectively clamped on the plurality of card units (130) of the card annular array (13) of the stand pipe docking assembly (1) through the plurality of movable plate slots (210), so as to realize the clamping connection between the clamp (21) of the pile leg fixing assembly (2) and the card annular array (13) of the stand pipe docking assembly (1); When the clamp (21) of the pile leg fixing assembly (2) is clamped onto the card annular array (13) of the riser docking assembly (1), the top of each card unit (130) of the card annular array (13) respectively presses the bottom of the clamping sleeve (12), thereby achieving the fastening of the card annular array (13) and the clamping sleeve (12).

5. The clamp-type riser suspension device according to claim 4 is characterized in that: Each of the card units (130) comprises a fixed plate (131), a movable plate (132), a pivot plate (133) and a bolt (134). The front side of the fixing plate (131) is used for welding to the outer wall of the riser unit (11). The pivoting plate (133) is fixed on the back side of the fixing plate (131); The bottom end of the movable plate (132) is pivotally connected to the pivot plate (133) via a bolt (134); The top end of the movable sheet (132) is bent inwardly so as to bend at a position close to the top end and bulge outward at the bend to form a clamping head end (135); Each movable piece card slot (210) on the inner wall of the clamp (21) is correspondingly clamped on the card head end (135) of each card unit (130) of the card annular array (13).

6. The clamp-type riser suspension device according to claim 5 is characterized in that: A plurality of card units (130) of the card annular array (13) surround the outer wall of the riser unit (11) to form a ring with a notch; The clamp (21) is a circular tube with a notch. When the clamp (21) of the pile leg fixing assembly (2) is respectively clamped onto a plurality of card units (130) of a card ring array (13) of a riser docking assembly (1) through a plurality of movable plate clamping grooves (210), the notch of the clamp (21) corresponds to a notch formed on an outer wall of the riser unit (11) around the plurality of card units (130).

7. The clamp-type riser suspension device according to claim 1 is characterized in that: The pile leg fixing assembly (2) further comprises a support reinforcement plate (23), and the hoop (21) and the welding fixing plate (22) are connected via the support reinforcement plate (23).

8. The clamp-type riser suspension device according to claim 1, characterized in that: The lower part of the offshore oil and gas production jacket platform (100) is provided with a jacket (101), a plurality of jackets (103) are passed through the jacket (101), and a plurality of pile legs (102) are respectively arranged at the corners of the jacket (101).

9. The clamp-type riser suspension device according to claim 1, characterized in that: A support rod (104) is arranged between adjacent pile legs (102) of the conductor frame (101).

10. A method for installing a clamping type riser suspension device, used for installing the clamping type riser suspension device according to any one of claims 1 to 8, comprising: A plurality of pile leg fixing assemblies (2) of the suspension units (200) are welded sequentially from top to bottom on the outer wall of a pile leg (102) of an offshore oil and gas production jacket platform (100) via the welding fixing plates (22); The clamping hoops (21) of the pile leg fixing assemblies (2) of a plurality of the suspension units (200) are clamped to the card ring array (13) of the riser docking assembly (1) by hoisting, comprising the following steps: The fixing plates (131) of a plurality of card units (130) are respectively clamped onto the outer walls of the riser units (11) of the riser docking assembly (1) to form a card annular array (13); Splicing the left ferrule part (121) and the right ferrule part (122) on the outer wall of the riser unit (11) above the card ring array (13) and fastening them with bolts to form a ferrule (12); The riser units (11) of the riser docking assemblies (1) of the plurality of suspension units (200) are placed into the clamping hoop (21) of the pile leg fixing assembly (2) by hoisting, and the riser units (11) are lowered so that the plurality of card units (130) of the card annular array (13) of the riser docking assemblies (1) correspond to the plurality of movable sheet card slots (210) of the clamping hoop (21) of the pile leg fixing assembly (2) respectively, until the clamping hoop (21) of the pile leg fixing assembly (2) is clamped with the card annular array (13) of the riser docking assemblies (1); The upper riser and the lower riser are respectively connected to the upper and lower ports of a plurality of the riser units (11), and then the plurality of upper riser and lower riser are connected through the riser units (11) to form a whole pipe that is connected from top to bottom.

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