Follow-up seat of blowout preventer

By designing a blowout preventer with a follow-up seat, the safety hazards of high-altitude operation of derrick-type coiled tubing equipment were solved, enabling convenient transportation and construction, and improving construction efficiency.

CN223854215UActive Publication Date: 2026-01-30HUAXIN TANGSHAN PETROLEUM EQUIP CO LTD
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Patent Information

Application Number
CN202520802859.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-25
Publication Date
2026-01-30
Estimated Expiration
2035-04-25

AI Technical Summary

Technical Problem

When connecting the blowout preventer to existing derrick-type coiled tubing equipment at high altitudes, personnel need to climb into the air to operate it, posing a safety hazard and restricting equipment transportation.

Method used

A blowout preventer seat was designed, including a back clamp, a front clamp, a support beam, and a seat. The blowout preventer is bolted to the seat, which can be folded and unfolded to adapt to changes in transportation and construction conditions.

Benefits of technology

It enables safe and convenient connection of the blowout preventer, improves construction efficiency, protects the safety of operators, and facilitates equipment transportation and construction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a follow-up seat of a blowout preventer. The follow-up seat comprises a back holding clamp, a front holding clamp, a backrest, a supporting beam and a seat body. The back holding clamp comprises a pipe clamp, a vertical pipe, a connecting plate and a handle; the front-side holding clamp comprises a pipe clamp, a front-side holding clamp vertical pipe, a front-side holding clamp connecting plate, a three-lug seat, a double-lug seat and a foot rest lever; the front embracing clamp and the back embracing clamp are opposite to each other and are fixed on the blowout prevention pipe through bolts; the seat comprises a seat plate, a backrest and armrests; and the seat is connected with the front embracing clamp through the supporting beam and the connecting beam. According to the follow-up seat of the blowout preventer, the follow-up seat can be switched between two states, the follow-up seat is in a folded state during transportation, transportation is convenient, the follow-up seat is in an unfolded state during construction, the structure is simple, installation is convenient, construction convenience is improved, construction efficiency is improved, and safety of operators is protected.
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Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum machinery technical field, specifically speaking, it is a blowout preventer follow-up seat. BACKGROUND

[0002] The well derrick type coiled tubing equipment is the coiled tubing equipment commonly used in foreign regions at present, and can complete the coiled tubing operation without using the crane. The well derrick type coiled tubing equipment is the coiled tubing equipment commonly used in foreign regions at present, and can complete the coiled tubing operation without using the crane. The well derrick type coiled tubing equipment is the coiled tubing equipment commonly used in foreign regions at present, and can complete the coiled tubing operation without using the crane. SUMMARY

[0003] The utility model discloses a simple structure, convenient installation, convenient construction, protect the blowout preventer follow-up seat of operator's safety.

[0004] The utility model discloses the technical scheme that adopts is as follows:

[0005] A blowout preventer follow-up seat, including: back embrace clamp, front embrace clamp, support beam and seat, front embrace clamp is opposite to back embrace clamp and is connected with blowout preventer with bolt,

[0006] The back embrace clamp includes pipe clamp, vertical pipe, connecting plate and handle,

[0007] Two vertical pipes that are parallel pass through connecting plate and are connected,

[0008] The outer side of connecting plate is separately provided with upper pipe clamp and lower pipe clamp,

[0009] The connecting plate includes upper connecting plate and lower connecting plate,

[0010] The upper connecting plate and lower connecting plate are connected through handle,

[0011] The front embrace clamp includes pipe clamp, front embrace clamp vertical pipe, front embrace clamp connecting plate, three ear seat, double ear seat and support rod,

[0012] The front embrace clamp vertical pipe that is parallel passes through front embrace clamp connecting plate and is connected,

[0013] The front clamping connecting plate comprises an upper connecting plate, a middle connecting plate and a lower connecting plate;

[0014] An upper pipe clamp and a lower pipe clamp are respectively arranged on the inner side of the front clamping riser end portion;

[0015] Three connecting ears parallel to each other are arranged on the upper connecting plate; the three connecting ears form a three-ear seat;

[0016] A support beam connecting ear is arranged on the middle connecting plate;

[0017] The support beam connecting ear is two connecting ears parallel to each other, forming a double-ear seat;

[0018] A double-ear seat connecting hole is arranged on the double-ear seat;

[0019] A support rod is arranged on the lower connecting plate;

[0020] The axis of the support rod is arranged horizontally;

[0021] The seat comprises a seat plate, a backrest and an armrest;

[0022] The backrest and the armrest are in an integrated structure;

[0023] The armrest is provided with a seat connecting plate at the lower part; the seat connecting plate is provided with a seat connecting plate connecting hole;

[0024] Seat plate connecting ears are arranged at the lower part of both sides of the seat plate; the connecting ears are provided with ear holes;

[0025] The seat plate connecting ears are hingedly connected to the seat connecting plate through a pin shaft;

[0026] A limiting plate is arranged on the seat connecting plate;

[0027] The limiting plate is arranged above the seat connecting plate connecting hole;

[0028] The upper surface of the limiting plate is parallel to the center line of the seat connecting plate connecting hole;

[0029] The limiting plate is arranged on the seat connecting plate in the horizontal direction;

[0030] A seat plate support seat is arranged at the rear end of the bottom of the seat plate close to the backrest; the support seat is provided with a support hole;

[0031] The seat plate support seat is connected to the double-ear seat through a support beam;

[0032] The upper end of the support beam is connected to the support hole of the support seat through a pin shaft;

[0033] The lower end of the support beam is connected to the double-ear seat through a bolt;

[0034] The seat plate support seat and the support beam are hingedly connected;

[0035] The support beam is hingedly connected with the double-ear seat;

[0036] A connecting beam is arranged at the middle of the front end of the seat plate;

[0037] The front end of the connecting beam is connected with the three-ear seat through a pin shaft;

[0038] The backrest and the armrest are welded from round tubes;

[0039] A backrest connecting seat for connecting with the double-ear seat is arranged at the middle position of the backrest;

[0040] Two rectangular holes for penetrating the double-ear seat from the front are arranged at the middle position of the seat plate.

[0041] Preferably, the upper pipe clamp and the lower pipe clamp are fixedly connected with the vertical pipe;

[0042] The upper end surface of the upper pipe clamp is in the same plane with the top end of the vertical pipe;

[0043] The lower end surface of the lower pipe clamp is in the same plane with the bottom end of the vertical pipe.

[0044] The handle is in the shape of a middle bracket, and the two free ends of the handle are connected with the upper connecting plate and the lower connecting plate respectively;

[0045] The pipe clamp is in the shape of a semicircle, and the free end is provided with a rectangular connecting part, which is provided with a pipe clamp connecting hole;

[0046] The pipe clamp is welded at the upper end and the lower end of the vertical pipe, and the arc opening faces the opposite direction of the vertical pipe;

[0047] Two connecting plates are welded on the vertical pipe, and the connecting plates are welded in the opposite direction of the arc opening of the pipe clamp.

[0048] Preferably, the connecting beam is in the shape of H, and the rear end of the connecting beam is connected with the seat plate;

[0049] The two free ends of the H-shaped connecting beam are respectively provided with transverse connecting pipes;

[0050] The transverse connecting pipes are connected with the three-ear seat through pin shafts.

[0051] Preferably, the lower end of the support beam is provided with a support beam connecting hole; the support beam connecting hole is connected with the double-ear seat through a bolt;

[0052] The upper end of the support beam is provided with two support beam connecting plates;

[0053] The support beam connecting plates are arranged on both sides of the support beam;

[0054] The support beam connecting plates are provided with support beam connecting ears;

[0055] The support beam connecting ears are provided with support beam connecting ear holes;

[0056] The support beam connecting ear holes arranged on both sides of the support beam are coaxial;

[0057] The support beam connecting ear is connected with the seat plate support base through bolts.

[0058] Preferably, the backrest connecting base comprises round tubes arranged at both ends,

[0059] The round tubes at both ends are connected through the connecting base connecting plate;

[0060] The backrest main body is provided with a backrest horizontal round tube in the middle part;

[0061] The upper round tube of the connecting base is sleeved on the backrest horizontal round tube.

[0062] Preferably, the height of the three-ear base is greater than that of the two-ear base.

[0063] Preferably, the distance between the center line of the ear hole of the three-ear base and the middle connecting plate is -cm;

[0064] The distance between the center line of the ear hole of the two-ear base and the upper connecting plate is -cm.

[0065] A construction method of a blowout preventer follow-up seat,

[0066] Folding state:

[0067] The lower end of the support beam is separated from the two-ear base of the front clamping; the seat plate loses the support of the support beam and rotates downward with the three-ear plate as the rotating shaft; the support beam is attached to the lower surface of the seat plate; the upper surface of the seat plate is attached to the surface of the backrest; the front end of the two-ear base penetrates through the rectangular hole at the bottom of the seat plate, and the front end of the two-ear base is connected to the two-ear base of the front clamping through bolts; the seat plate rotates upward with the three-ear plate as the rotating shaft under the support of the support beam; the support beam is separated from the lower surface of the seat plate; the upper surface of the seat plate is separated from the surface of the backrest; and the blowout preventer follow-up seat reaches the unfolded state.

[0068] The blowout preventer follow-up seat is fixed on the blowout preventer pipe at the top of the blowout preventer; the blowout preventer is horizontally placed during transportation of the equipment, the distance between the blowout preventer and the moving platform is small, and the follow-up seat is in the folded state; during construction of the equipment, the derrick of the equipment is erected, and the moving platform is raised to a high position; an operator sits on the follow-up seat in advance, an oil cylinder drives the blowout preventer from the horizontal state to the vertical state, and the operator also reaches the high position along with the swing of the blowout preventer; at this time, the moving platform is adjusted vertically, forwardly and backwardly, and leftwardly and rightwardly, so that the blowout preventer box below the injection head is aligned with the blowout preventer pipe; the operator sitting on the follow-up seat rotates the blowout preventer box below the blowout preventer, and the blowout preventer is connected; after the connection is completed, the operator climbs down from the blowout preventer, and continuous oil pipe operation is performed.

[0069] The blowout preventer follow-up seat has the beneficial effects of the prior art:

[0070] The utility model discloses a blowout preventer servo seat, and the servo seat has two state switches, is in the folding state in transportation, is convenient for transportation, is in the unfolded state in construction, simple structure, convenient installation improves construction convenient, improves construction efficiency, protects the safety of operator. BRIEF DESCRIPTION OF DRAWINGS

[0071] Figure 1 It is the unfolded state three -dimensional structure schematic diagram of the utility model blowout preventer servo seat;

[0072] Figure 2 It is the unfolded state main view structural schematic diagram of the utility model blowout preventer servo seat;

[0073] Figure 3 It is the unfolded state plan view structural schematic diagram of the utility model blowout preventer servo seat;

[0074] Figure 4 It is the folding state three -dimensional structure schematic diagram of the utility model blowout preventer servo seat;

[0075] Figure 5 It is the folding state rear view structural schematic diagram of the utility model blowout preventer servo seat;

[0076] Figure 6 It is the front embrace clamping structural schematic diagram of the utility model blowout preventer servo seat;

[0077] Figure 7 It is the support beam structural schematic diagram of the utility model blowout preventer servo seat;

[0078] Figure 8 It is the backrest three -dimensional structure schematic diagram of the utility model blowout preventer servo seat;

[0079] Figure 9 It is the backrest main view structural schematic diagram of the utility model blowout preventer servo seat;

[0080] Figure 10 It is the backrest side view structural schematic diagram of the utility model blowout preventer servo seat;

[0081] Figure 11 It is the seat board bottom view structural schematic diagram of the utility model blowout preventer servo seat;

[0082] Figure 12 It is Figure 11 A-A section view mechanism schematic diagram;

[0083] Figure 13 It is the seat board side view structural schematic diagram of the utility model blowout preventer servo seat;

[0084] Figure 14Is the seat plate of the utility model blowout preventer servo seat's seat plate overhead structure schematic view;

[0085] Figure 15 Is the seat plate of the utility model blowout preventer servo seat's seat plate side structure schematic view;

[0086] Figure 16 Is the back of the utility model blowout preventer servo seat's back embrace structure schematic view.

[0087] The main component symbol explanation in the drawing is as follows:

[0088] In the drawing:

[0089] 1, back embrace 2, front embrace

[0090] 3, backrest 4, support beam

[0091] 5, seat 6, riser

[0092] 7, handle 8, upper pipe clamp

[0093] 9, lower pipe clamp 10, upper connecting plate

[0094] 11, lower connecting plate 12, seat connecting plate connecting hole

[0095] 13, front embrace riser 14, three ear seats

[0096] 15, double ear seat 16, connecting beam

[0097] 17, upper connecting plate 18, middle connecting plate

[0098] 19, lower connecting plate 20, blowout preventer pipe

[0099] 21, support beam connecting ear 22, support beam connecting plate

[0100] 23, double ear seat connecting hole 24, support rod

[0101] 25, seat plate 26, backrest connecting seat

[0102] 27, armrest 28, seat connecting plate

[0103] 29, seat plate connecting ear 30, limiting plate

[0104] 31, seat plate support seat 32, rectangular hole

[0105] 33, backrest horizontal round pipe 34, blowout preventer. DETAILED DESCRIPTION

[0106] The utility model will be explained in detail as follows by referring to the drawings and examples:

[0107] Appendix Figures 1-15 It is known that a blowout preventer seat includes: a backrest clip 1, a frontrest clip 2, a backrest 3, a support beam 4, and a seat 5; the frontrest clip and the backrest clip are arranged opposite to each other and are connected to the blowout preventer pipe 20 by bolts.

[0108] The back clamp includes: a pipe clamp, a riser 6, a connecting plate, and a handle 7;

[0109] Two parallel risers are connected by a connecting plate;

[0110] The outer side of the connecting plate is respectively provided with an upper pipe clamp 8 and a lower pipe clamp 9;

[0111] The connecting plate includes an upper connecting plate 10 and a lower connecting plate 11;

[0112] The upper connecting plate 10 and the lower connecting plate 11 are connected by the handle 7;

[0113] The front clamp includes: a pipe clamp, a front clamp riser 13, a front clamp connecting plate, a three-ear seat 14, a two-ear seat 15, and a support rod 24;

[0114] The parallel front clamping risers 13 are connected by front clamping connecting plates;

[0115] The front clamp connecting plate includes: an upper connecting plate 17, a middle connecting plate 18, and a lower connecting plate 19;

[0116] The inner side of the end of the front clamp riser 13 is provided with an upper front clamp and a lower front clamp respectively;

[0117] The upper connecting plate 17 is provided with three parallel connecting ears; the three connecting ears form a three-ear seat 14;

[0118] A double-ear seat 15 is provided on the middle connecting plate 17;

[0119] The dual-ear base 15 consists of two parallel connecting ears;

[0120] The double-ear base is provided with a double-ear base connection hole 23;

[0121] A support rod 24, i.e. a foot pedal, is provided on the lower connecting plate 19;

[0122] The axis of the support rod is set horizontally;

[0123] Seat 5 includes: seat panel 25, backrest 3, and armrest 27;

[0124] The backrest 3 and armrest 27 are integrated into one structure;

[0125] A seat connecting plate 28 is provided at the lower part of the armrest; the seat connecting plate 28 is provided with seat connecting plate connecting holes 12;

[0126] The lower part of the seat plate 25 is provided with seat plate connecting ears 29; the connecting ears are provided with ear holes;

[0127] The seat plate connecting ears 29 are hingedly connected with the seat connecting plate 28 through a pin shaft;

[0128] The seat connecting plate 28 is provided with a limiting plate 30;

[0129] The limiting plate 30 is arranged above the seat connecting plate connecting hole;

[0130] The upper surface of the limiting plate is parallel to the center line of the seat connecting plate connecting hole;

[0131] The seat connecting plate is provided with a limiting plate in the horizontal direction;

[0132] The bottom of the seat plate is provided with a seat plate support seat 31 near the backrest; the support seat is provided with a support hole;

[0133] The seat plate support seat 31 is connected with the double-ear seat 15 through a support beam 4;

[0134] The upper end of the support beam 4 is connected with the support hole of the support seat through a pin shaft;

[0135] The lower end of the support beam 4 is connected with the double-ear seat 15 through a bolt;

[0136] The seat plate support seat and the support beam are hingedly connected;

[0137] The support beam and the double-ear seat are hingedly connected;

[0138] The front end of the seat plate is provided with a connecting beam 16;

[0139] The front end of the connecting beam 16 is connected with the three-ear seat 14 through a pin shaft;

[0140] The backrest and the armrest are welded by round pipes;

[0141] The middle position of the backrest is provided with a backrest connecting seat 26 for connecting with the double-ear seat;

[0142] The middle position of the seat plate is provided with two rectangular holes 32 for penetrating the double-ear seat 15 from the front.

[0143] Preferably, the upper pipe clamp and the lower pipe clamp are fixedly connected with the vertical pipe;

[0144] The upper end surface of the upper pipe clamp is in the same plane as the top end of the vertical pipe;

[0145] The lower end surface of the lower pipe clamp is in the same plane as the bottom end of the vertical pipe.

[0146] Preferably, the handle is in the shape of a middle bracket; two free ends of the handle are connected to the upper and lower connecting plates, respectively;

[0147] The pipe clamp is in the shape of a semicircle, and a rectangular connecting part is arranged at the free end of the pipe clamp, and the rectangular connecting part is provided with a pipe clamp connecting hole;

[0148] The pipe clamp is welded to the upper end and the lower end of the vertical pipe, and the circular arc opening faces the opposite direction of the vertical pipe;

[0149] Two connecting plates are welded to the vertical pipe, and the connecting plates are welded to the opposite direction of the circular arc opening of the pipe clamp.

[0150] Preferably, the connecting beam is in the shape of H, and the rear end of the connecting beam is connected to the seat plate;

[0151] Two free ends of the H-shaped connecting beam are respectively provided with transverse connecting pipes;

[0152] The transverse connecting pipes are connected to the three-ear seat through a pin shaft.

[0153] Preferably, the lower end of the support beam is provided with a support beam connecting hole; the support beam connecting hole is connected to the double-ear seat through a bolt;

[0154] The upper end of the support beam 4 is provided with two support beam connecting plates 22;

[0155] The support beam connecting plates 22 are arranged on both sides of the support beam 4;

[0156] The support beam connecting plates are provided with support beam connecting ears 21;

[0157] The support beam connecting ears are provided with support beam connecting ear holes;

[0158] The support beam connecting ear holes arranged on both sides of the support beam are coaxial;

[0159] The support beam connecting ears are connected to the seat plate support seat 31 through a bolt.

[0160] Preferably, the backrest connecting seat 26 includes upper and lower circular pipes 261 and 262 arranged at both ends,

[0161] The upper and lower circular pipes 261 and 262 are connected through a connecting seat connecting plate;

[0162] A backrest horizontal circular pipe 33 is arranged in the middle of the backrest main body;

[0163] The upper circular pipe of the backrest connecting seat 26 is sleeved on the backrest horizontal circular pipe 33.

[0164] Preferably, the height of the three-ear seat is greater than the height of the double-ear seat.

[0165] Preferably, the distance between the center line of the three-ear seat ear hole and the middle connecting plate is 15-20 cm;

[0166] The distance between the binaural seat ear hole center line and the upper connecting plate is 5-10 cm.

[0167] A construction method of blowout preventer follow-up seat,

[0168] Folded state:

[0169] The lower end of the support beam is separated from the binaural seat of the front clamping, and the seat plate loses the support of the support beam 4 to rotate downward as the three-ear plate as the rotating shaft; the support beam is attached to the lower surface of the seat plate; the upper surface of the seat plate is attached to the surface of the backrest; the front end of the binaural seat penetrates the rectangular hole at the bottom of the seat plate, and the support beam 4 is embedded in the binaural seat; the front end of the binaural seat is connected to the lower pipe of the backrest connecting seat through a bolt; the lower pipe of the backrest connecting seat is embedded in the front end of the binaural seat, and the blowout preventer follow-up seat reaches the folded state, and the entire blowout preventer follow-up seat becomes a whole.

[0170] Unfolded state:

[0171] The front end of the binaural seat is separated from the backrest connecting seat; the lower end of the support beam is connected to the binaural seat of the front clamping through a bolt; the seat plate rotates upward as the three-ear plate as the rotating shaft under the support of the support beam; the support beam is separated from the lower surface of the seat plate; the upper surface of the seat plate is separated from the surface of the backrest; and the blowout preventer follow-up seat reaches the unfolded state.

[0172] The blowout preventer follow-up seat is fixed on the blowout preventer pipe at the top of the blowout preventer, the blowout preventer is horizontally placed during transportation, the distance between the blowout preventer and the mobile platform is small, and the follow-up seat is in the folded state; during equipment construction, the derrick of the equipment is erected, and the mobile platform is raised to a high position; an operator sits on the follow-up seat in advance, an oil cylinder drives the blowout preventer from a horizontal state to a vertical state, and the operator also reaches the high position along with the swing of the blowout preventer; at this time, the mobile platform is adjusted vertically, forwardly and backwardly, and leftwardly and rightwardly, so that the blowout preventer box below the injection head is aligned with the blowout preventer pipe; the operator turns the ren below the blowout preventer box to be connected with the blowout preventer; after the connection is completed, the operator climbs down from the blowout preventer, and continuous oil pipe operation is performed.

[0173] The blowout preventer follow-up seat of the utility model has two states for switching, is in the folded state during transportation, is convenient for transportation, is in the unfolded state during construction, has a simple structure, is convenient to install, improves construction convenience, improves construction efficiency, and protects the safety of operators.

[0174] The above is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form. Any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment belong to the technical solution range of the utility model.

Claims

1. A blowout preventer follow-up seat, characterized in that it comprises: a back clamping device (1), a front clamping device (2), a support beam (4) and a seat (5); the front clamping device is opposite to the back clamping device and is connected to a blowout preventer (20) by bolts; the back clamping device comprises a pipe clamp, a vertical pipe (6), a connecting plate and a handle (7); two vertical pipes parallel to each other are connected by the connecting plate; the outer side of the connecting plate is respectively provided with an upper pipe clamp (8) and a lower pipe clamp (9); the connecting plate comprises an upper connecting plate (10) and a lower connecting plate (11); the upper connecting plate (10) and the lower connecting plate (11) are connected by the handle (7); the front clamping device comprises a pipe clamp, a front clamping device vertical pipe (13), a front clamping device connecting plate, a three-ear seat (14), a double-ear seat (15) and a support rod (24); the front clamping device vertical pipes (13) parallel to each other are connected by the front clamping device connecting plate; the front clamping device connecting plate comprises an upper connecting plate (17), a middle connecting plate (18) and a lower connecting plate (19); the inner side of the end of the front clamping device vertical pipe (13) is respectively provided with a front clamping device upper pipe clamp and a front clamping device lower pipe clamp; three connecting ears parallel to each other are provided on the upper connecting plate (17); the three connecting ears form the three-ear seat (14); the double-ear seat (15) is provided on the middle connecting plate (17); the double-ear seat (15) is two connecting ears parallel to each other; the double-ear seat is provided with a double-ear seat connecting hole (23); the support rod (24) is provided on the lower connecting plate (19); the axis of the support rod is horizontally arranged; the seat (5) comprises a seat plate (25), a backrest (3) and an armrest (27); the backrest (3) and the armrest (27) are an integral structure; the lower part of the armrest is provided with a seat connecting plate (28); the seat connecting plate (28) is provided with a seat connecting plate connecting hole; the lower part of both sides of the seat plate (25) is provided with a seat plate connecting ear (29); the seat plate connecting ear (29) and the seat connecting plate (28) are connected by a pin shaft hinge; the seat connecting plate (28) is provided with a limiting plate (30); the limiting plate (30) is arranged above the seat connecting plate connecting hole; the upper surface of the limiting plate (30) is parallel to the center line of the seat connecting plate connecting hole; the backrest (3) is provided with a backrest connecting seat (26) near the backrest; the seat plate (25) is provided with two rectangular holes (32) for penetrating the front clamping device double-ear seat (15).

2. The blowout preventer follow-up seat according to claim 1, characterized in that: the upper pipe clamp and the lower pipe clamp are fixedly connected with the vertical pipe; the upper end surface of the upper pipe clamp is in the same plane as the top end of the vertical pipe. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The lower end surface of the lower pipe clamp is in the same plane as the bottom end of the riser.

3. The blowout preventer follow-up seat according to claim 1, wherein: The handle is in the shape of a middle bracket, and the two free ends of the handle are connected to the upper and lower connecting plates, respectively; The pipe clamp is in the shape of a semicircle, and the free end is provided with a rectangular connecting part, which is provided with a pipe clamp connecting hole; The pipe clamp is welded to the upper and lower ends of the riser, and the circular arc opening faces the opposite direction of the riser; Two connecting plates are welded to the riser, and the connecting plates are welded to the opposite direction of the circular arc opening of the pipe clamp.

4. The blowout preventer follow-up seat according to claim 1, wherein: The connecting beam is in the shape of H, and the rear end of the connecting beam is connected to the seat plate; The two free ends of the H-shaped connecting beam are provided with transverse connecting pipes, respectively; The transverse connecting pipes are connected to the three-ear seat through a pin shaft.

5. The blowout preventer follow-up seat according to claim 1, wherein: The lower end of the support beam is provided with a support beam connecting hole, and the support beam connecting hole is connected to the double-ear seat through a bolt; The upper end of the support beam (4) is provided with two support beam connecting plates (22); The support beam connecting plates (22) are arranged on both sides of the support beam (4); The support beam connecting plates are provided with support beam connecting ears (21); The support beam connecting ears are provided with support beam connecting ear holes; The support beam connecting ear holes arranged on both sides of the support beam are coaxial; The support beam connecting ears are connected to the seat plate support seat through a bolt.

6. The blowout preventer follow-up seat according to claim 1, wherein: The backrest connecting seat (26) includes circular pipes arranged at both ends, The circular pipes at both ends are connected through a connecting seat connecting plate; The backrest body is provided with a backrest horizontal circular pipe in the middle part; The upper circular pipe of the connecting seat is sleeved on the backrest horizontal circular pipe.

7. The blowout preventer follow seat of claim 1, wherein: The height of the three-ear seat is greater than the height of the double-ear seat.

8. The blowout preventer follow-up seat according to claim 7, wherein: The distance between the center line of the ear hole of the three-ear seat and the middle connecting plate is 15-20 cm; The distance between the center line of the ear hole of the double-ear seat and the upper connecting plate is 5-10 cm.