Ram assist replacement device for a ram preventer
By designing an auxiliary gate replacement device, the mechanical replacement of the gate is achieved using a swing arm and a manual winch, which solves the problems of large space occupation and power supply in the existing technology, and improves the replacement efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RONGSHENG MASCH MFG LTD OF HUABEI OILFIELD HEBEI
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-12
AI Technical Summary
The replacement of existing gate blowout preventers requires an external electric, hydraulic or pneumatic drive system, which results in a large space occupation, complex structure and high equipment cost, and it is difficult to obtain power at outdoor oil wellheads.
A gate-assisted replacement device was designed, which realizes the mechanized replacement of the gate through a swing arm and a gate lifting assembly. The device uses a manual winch and pulley block for hoisting. The swing arm can be flexibly adjusted in position and does not require an external power source.
It simplifies the operation process, reduces equipment complexity and cost, improves replacement efficiency and safety, and is adaptable to different models and installation locations of gate blowout preventers.
Smart Images
Figure CN224351929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil and gas drilling and production equipment technology, and more specifically to a gate auxiliary replacement device for a gate blowout preventer. Background Technology
[0002] A blowout preventer (BOP) is a crucial piece of equipment installed on the drilling tunnel during the drilling process to prevent blowout accidents. This invention relates to a gate-type BOP, where one end is connected to a hydraulic cylinder via a connecting rod. The gate-type BOP has an internal gate chamber that communicates with the wellhead. The drive end of the hydraulic cylinder is connected to a gate assembly shaft and is positioned towards the gate chamber. A gate inlet / outlet is located on the side wall of the gate chamber facing the hydraulic cylinder. The gate is mounted on the gate assembly shaft. The hydraulic cylinder can push the gate into the gate chamber to seal the through-hole; that is, the movement of the hydraulic cylinder effectively closes or opens the wellhead. Due to drilling process requirements and BOP maintenance needs, the gate must be periodically replaced by opening the side door of the gate-type BOP housing.
[0003] However, in this field both domestically and internationally, external devices such as electric, hydraulic, or pneumatic drive systems are commonly used for gate valve replacement. Although this achieves partial automation under electric or hydraulic drive, it requires creating the necessary space for the replacement device and relies on external electric or hydraulic power sources, resulting in a complex overall system that needs to be equipped with corresponding power equipment and control systems. Moreover, the gate valve blowout preventer is generally located at the outdoor oil wellhead, making it inconvenient to find a suitable energy source for it.
[0004] Therefore, how to provide a gate auxiliary replacement device for gate blowout preventers that occupies little space and does not require power supply equipment is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the present invention provides a gate auxiliary replacement device for a gate blowout preventer. By setting a swing arm to rotate on the assembly part, the movement and positioning of the gate lifting component and its connection with the gate are completed. The assembly part can be directly installed on the hydraulic cylinder of the gate blowout preventer, reducing the floor space. Moreover, it is a mechanized structure that does not require additional power. It can be operated manually only. The structure is simple and reliable, which solves the technical defects of the current technology that requires external devices such as electric, hydraulic or pneumatic drive systems for gate replacement, which have large space occupation, complex structure and high equipment cost.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A gate auxiliary replacement device for a gate blowout preventer, the gate blowout preventer comprising a gate blowout preventer body and a hydraulic cylinder arranged horizontally opposite and spaced apart, the gate blowout preventer body having a gate inlet / outlet on one side corresponding to the hydraulic cylinder for gate entry and exit, the driving end of the hydraulic cylinder having a gate assembly shaft, the bottom end of the gate being quickly and detachably mounted on the gate assembly shaft, comprising:
[0008] An assembly part, which is detachably connected to the housing of the hydraulic cylinder;
[0009] The swing arm has a gate assembly position on the outside of the gate inlet and outlet, and a gate replacement position on the outside of the housing of the hydraulic cylinder. The first end of the swing arm is rotatably connected to the assembly part and can be subjected to external force so that its second end can be rotated to the gate assembly position or the gate replacement position.
[0010] A gate lifting assembly is installed at the second end of the swing arm. When the gate is in the gate assembly position, the second end of the swing arm rotates to the gate assembly position, the gate lifting assembly connects to and lifts the gate, and the second end of the swing arm rotates and transports the gate to the gate replacement position.
[0011] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a gate auxiliary replacement device for a gate blowout preventer. The assembly part is detachably installed on the hydraulic cylinder, which plays the role of supporting and connecting the subsequent structure. The first end of the first swing arm is rotatably installed on the top of the assembly part. When the gate needs to be replaced, the position can be adjusted by rotating the first swing arm as needed. The middle section of the second swing arm is rotatably installed on the second end of the first swing arm, which further increases the flexibility of position adjustment. When the gate lifting assembly is working, the gate located at the gate assembly position can be lifted. Then, the position of the gate is adjusted by rotating the first and second swing arms to move the gate to the gate replacement position for replacement. The gate lifting assembly lifts the replaced gate and moves it back above the gate assembly position for assembly, completing the gate replacement. By using this gate-assisted replacement device, operators can easily connect the gate to the gate by lifting the gate assembly, and easily transfer the gate by rotating the second and first swing arms, facilitating the replacement operation. Furthermore, the detachable assembly and flexible first and second swing arms allow the device to adapt to different models and installation positions of gate blowout preventers, making it widely applicable.
[0012] Furthermore, the swing arm includes:
[0013] The first swing arm has a gate assembly position on the outer side of the gate inlet and a gate replacement position on the outer side of the hydraulic cylinder housing. The first end of the first swing arm is rotatably connected to the assembly part and the second end can be rotated to the gate assembly position or the gate replacement position.
[0014] The second swing arm has its rotation plane parallel to that of the first swing arm, with its middle section rotatably connected to the second end of the first swing arm. The gate lifting assembly is mounted on the second swing arm. When the gate is in the gate assembly position, the second end of the first swing arm rotates to the gate assembly position. There is an angle between the first and second swing arms, and the first end of the second swing arm can rotate to the gate assembly position, while the second end can rotate to the outside of the hydraulic cylinder housing, so that the lifting connector of the gate lifting assembly moves accordingly above the gate.
[0015] The beneficial effects of adopting the above technical solution are: the first swing arm can be easily rotated to the gate assembly position or replacement position, the second swing arm is arranged in parallel and connected to the first swing arm, and can be flexibly adjusted to a suitable position, which simplifies the operation steps and improves work efficiency.
[0016] Furthermore, the gate lifting assembly includes a pulley block and a manual winch. The pulley block is installed at the first end of the second swing arm, and the manual winch is installed at the second end of the second swing arm with a lifting rope wound around it. The other end of the lifting rope can be wound around the pulley block and connected to a lifting ring for lifting the gate. The gate and the lifting ring have lifting holes on their opposite walls that match the lifting ring.
[0017] The beneficial effects of adopting the above technical solution are: by manually pulling the hoisting rope and passing it around the pulley block to connect with the hoisting ring, the hoisting ring can be moved up and down. The hoisting ring is then installed in the hoisting hole of the gate plate. By operating the manual winch, the gate plate can be lifted, thus facilitating the replacement operation.
[0018] Furthermore, the manual winch is a two-way self-locking manual winch, used to fix the gate at a certain height when raising or lowering it.
[0019] The beneficial effects of adopting the above technical solution are: during the raising and lowering of the gate, the two-way self-locking function can ensure that the gate is stably fixed at any height, effectively preventing the gate from suddenly sliding down or moving up due to accidental operation or equipment failure, avoiding damage to equipment and personnel, and greatly improving the safety of operation.
[0020] Furthermore, the pulley assembly includes multiple fixed pulleys and one movable pulley. The first end of the second swing arm has multiple pulley mounting holes spaced apart through its upper and lower plates. A rope feeding hole is provided between the multiple pulley mounting holes. The multiple fixed pulleys are respectively rotatably installed in the pulley mounting holes. The movable pulley is rotatably installed on the top of the lifting ring. The second end of the lifting rope is wound around the fixed pulleys and the movable pulley to adjust the height position of the lifting ring.
[0021] The beneficial effects of adopting the above technical solution are: the movable pulley is installed at the top of the lifting ring, and its cooperation with the fixed pulley can achieve a labor-saving effect. When the manual winch pulls the lifting rope, the movable pulley is equivalent to distributing the weight of the gate plate onto multiple sections of the lifting rope, reducing the force required by the operator and making the operation of lifting the gate plate easier.
[0022] Furthermore, the assembly part includes a set of symmetrically arranged connecting plates. The two connecting plates are connected by a screw assembly. A clamping plate is integrally fixed on the lower surface of each of the two connecting plates and the two plates are arranged symmetrically. Multiple fixing rods are arranged circumferentially on the outer side of the hydraulic cylinder. The opposite sidewalls of the two connecting plates can clamp and fix the multiple adjacent fixing rods.
[0023] The beneficial effects of adopting the above technical solution are: the symmetrically arranged clamping plates, after being adjusted by the screw assembly, can firmly clamp the fixed rod on the outside of the hydraulic cylinder, ensuring stable and reliable clamping and preventing the device from shifting or loosening during use.
[0024] Furthermore, arc-shaped clamping grooves are formed on the opposite sidewalls of the two clamping plates along the axial direction of the fixing rod, and the radial cross-section of the arc-shaped clamping grooves matches the radial cross-section of the fixing rod.
[0025] The beneficial effects of adopting the above technical solution are: the arc-shaped clamping groove on the clamping plate matches the cross section of the fixed rod, which can closely fit the shape of the fixed rod, thereby increasing the contact area between the assembly part and the fixed rod, thus improving the clamping stability, reducing the relative sliding between the clamping plate and the fixed rod, and reducing the risk of the whole device shaking due to component instability.
[0026] Furthermore, the screw assembly includes multiple connecting screws, and multiple coaxially arranged assembly holes are provided on the opposite sidewalls of the two connecting plates. The multiple connecting screws are correspondingly assembled in the multiple assembly holes, and the two ends of the connecting screws extend out of the assembly holes and are respectively screwed with nuts.
[0027] The beneficial effects of adopting the above technical solution are: by cooperating with multiple connecting screws and nuts, the distance between the two connecting plates can be precisely adjusted, so that the assembly part can better adapt to the fixing rods of different diameters, ensuring that the assembly part and the fixing rod achieve the best fit, thereby improving the stability of clamping.
[0028] Furthermore, the screw assembly also includes multiple limiting pins, and limiting holes are provided at both ends of the connecting screw along its radial direction. The multiple limiting pins can be inserted into the limiting holes to limit the nut.
[0029] The beneficial effects of adopting the above technical solution are: the position of the nut on the connecting screw can be limited, preventing the nut from being over-twisted and falling off the connecting screw when the assembly is disassembled, facilitating the next installation and clamping; in addition, one of the limiting pins can stop the corresponding nut, and can support the nut during clamping, making it easier to clamp the other nut and improving the clamping force. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0031] Figure 1 This is a schematic diagram of the installation of the gate auxiliary replacement device for the gate blowout preventer of this utility model.
[0032] Figure 2 This is a schematic diagram of the gate auxiliary replacement device for a gate blowout preventer according to the present invention.
[0033] Among them, 100-gate blowout preventer, 101-hydraulic cylinder, 1011-gate assembly shaft, 1012-fixed rod, 102-gate, 1-assembly part, 11-connecting plate, 111-clamping plate, 12-screw assembly, 121-connecting screw, 122-nut, 123-limit pin, 2-first swing arm, 3-second swing arm, 4-gate lifting assembly, 41-lifting ring, 42-manual winch, 421-mounting base, 422-rotating shaft, 423-rope winding drum, 424-handle, 43-pulley block, 431-fixed pulley, 432-moving pulley. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] This utility model discloses a blowout preventer gate replacement device. The gate blowout preventer 100 includes a gate blowout preventer body and a hydraulic cylinder 101 arranged horizontally opposite each other and spaced apart. The gate blowout preventer body has a gate inlet / outlet on one side corresponding to the hydraulic cylinder 101 for the gate 102 to enter and exit. The driving end of the hydraulic cylinder 101 is provided with a gate assembly shaft 1011. The bottom end of the gate 102 is detachably assembled onto the gate assembly shaft 1011. The device includes an assembly part 1, a swing arm, and a gate lifting assembly 4. The assembly part 1 is detachably connected to the housing of the hydraulic cylinder 101. Above; the outer side of the gate inlet and outlet is the gate assembly position, and the outer side of the housing of the hydraulic cylinder 101 is the gate replacement position. The first end of the swing arm is rotatably connected to the assembly part 1 and can be subjected to external force so that its second end can be rotated to the gate assembly position or the gate replacement position accordingly. The gate lifting assembly 4 is installed at the second end of the swing arm. When the gate 102 is in the gate assembly position, the second end of the swing arm rotates to the gate assembly position, the gate lifting assembly 4 connects to and vertically lifts the gate 102 away from the gate assembly shaft 1011, and the second end of the swing arm rotates and transports the gate 102 to the gate replacement position.
[0036] This utility model relates to a specific embodiment of a swing arm, which includes a first swing arm and a second swing arm. The first end of the first swing arm 2 is rotatably connected to the assembly part 1, and the second end can be rotated to the gate assembly position or the gate replacement position. The rotation plane of the second swing arm 3 is parallel to the rotation plane of the first swing arm 2, and its middle section is rotatably connected to the second end of the first swing arm 2. The gate lifting assembly 4 is mounted on the second swing arm 3. When the gate 102 is in the gate assembly position, the second end of the first swing arm 2 rotates to the gate assembly position. An angle exists between the first swing arm 2 and the second swing arm 3. The first end of the second swing arm 3 can rotate to the gate assembly position, and the second end can rotate to the outside of the housing of the hydraulic cylinder 101, so that the lifting connector of the gate lifting assembly 4 moves accordingly above the gate 102. The first swing arm 2 can easily rotate to the gate assembly position or the replacement position, and the second swing arm 3, arranged parallel to and connected to the first swing arm 2, can be flexibly adjusted to a suitable position, simplifying the operation steps and improving work efficiency.
[0037] In a specific embodiment of the gate lifting assembly 4 of this utility model, the gate lifting assembly 4 includes a pulley block 43 and a manual winch 42. The pulley block 43 is installed at the first end of the second swing arm 3, and the manual winch 42 is installed at the second end of the second swing arm 3 with a lifting rope wound around it. The other end of the lifting rope can be wound around the pulley block 43. The lifting connector is a lifting ring 41 installed on the pulley block 43. The gate 102 and the lifting ring 41 have lifting holes on their opposite walls that match the lifting ring 41. By pulling the lifting rope with the manual winch 42 and passing it around the pulley block 43 to connect with the lifting ring 41, the lifting ring 41 can move up and down and be installed in the lifting hole of the gate 102. By operating the manual winch 42, the gate 102 can be lifted, thus facilitating the replacement operation.
[0038] In addition, to facilitate the connection between the lifting ring 41 and the gate 102, the lifting hole on the gate 102 can be set as a screw hole, and the bottom of the lifting ring 41 can be set as a threaded connector. The connection between the lifting ring 41 and the gate 102 can be completed by directly screwing the threaded connector of the lifting ring 41 into the lifting hole, which facilitates disassembly and assembly and improves the replacement efficiency of the gate 102.
[0039] In the above embodiment, the manual winch 42 is a two-way self-locking manual winch, used to fix the lifting gate 102 at a certain height. During the lifting of the gate 102, the two-way self-locking function ensures that the gate 102 is stably fixed at any height, effectively preventing the gate 102 from suddenly sliding down or moving up due to accidental operation or equipment failure, avoiding damage to equipment and personnel, and greatly improving the safety of operation.
[0040] The manual winch in the above embodiment comprises a mounting base 421, a rotating shaft 422, and a rope drum 423. The mounting base 421 is fixed to the lower plate of the second end of the second swing arm 3. The rotating shaft 422 and the rope drum 423 are rotatably mounted in the mounting base 421 and are spaced apart. A drive gear is coaxially mounted on the rotating shaft 422 near the mounting base 421. A driven gear is mounted on the rope drum 423 corresponding to the drive gear and meshes with the drive gear. The rotating shaft 422 extends out of the mounting base 421 and is fixedly connected to a crank handle 424. The winch also includes a bidirectional ratchet rotatably mounted on the shaft of the rope drum 423. The bidirectional ratchet is located on the outside of the mounting base 421, and a bidirectional pawl is meshed with the bidirectional ratchet on the outer wall of the mounting base 421. The meshing connection between the two can lock the counterclockwise or clockwise rotation of the rope drum 423. The meshing of the driving gear and the driven gear enables efficient power transmission between the rotating shaft 422 and the winding drum 423. When the operator rotates the rotating shaft 422 through the crank handle 424, the power can be smoothly transmitted to the winding drum 423, thereby realizing the winding and unwinding of the wire rope. It can also ensure the stability and accuracy of power transmission, reduce power loss and transmission error, and improve the working efficiency of the manual winch.
[0041] In a specific embodiment of the pulley block 43 of this utility model, the pulley block 43 includes multiple fixed pulleys 431 and one movable pulley 432. Multiple pulley mounting holes 31 are spaced apart on the upper and lower surfaces of the first end of the second swing arm 3, and rope feeding holes 32 are provided between the multiple pulley mounting holes 31. The multiple fixed pulleys 431 are rotatably installed in the corresponding pulley mounting holes 31, and the movable pulley 432 is rotatably installed on the top of the lifting ring 41. The movable pulley 432 is connected to the multiple fixed pulleys 431 via ropes. The fixed pulley near the second end of the second swing arm 3 is connected to the rope winding drum 423 via ropes. The movable pulley 432, installed on the top of the lifting ring 41, works in conjunction with the fixed pulleys 431 to achieve a labor-saving effect. When the manual winch 42 pulls the rope, the movable pulley 432 effectively distributes the weight of the gate assembly across multiple rope segments, reducing the force required by the operator and making the lifting of the gate assembly easier.
[0042] In a specific embodiment of the assembly part 1 of this utility model, the assembly part 1 includes a set of symmetrically arranged connecting plates 11. The two connecting plates 11 are connected by a screw assembly 12. A clamping plate 111 is integrally fixed on the lower surface of each of the two connecting plates 11, and the two are arranged symmetrically. A plurality of fixing rods 1012 are arranged circumferentially around the outside of the hydraulic cylinder 101. The opposite sidewalls of the two connecting plates 11 can clamp and fix the fixing rods 1012. After the symmetrically arranged clamping plates 111 are adjusted by the screw assembly 12, they can firmly clamp the fixing rods 1012 on the outside of the hydraulic cylinder 101, ensuring stable and reliable clamping, preventing the device from shifting or loosening during use, and eliminating the need to occupy ground or other space.
[0043] In the above embodiment, to improve the clamping and fixing effect, arc-shaped clamping grooves are provided on the opposite sidewalls of the two clamping plates 111 along the axial direction of the fixing rod 1012, and the cross-section of the arc-shaped clamping grooves matches the cross-section of the fixing rod 1012. The matching of the arc-shaped clamping grooves on the clamping plates 111 with the cross-section of the fixing rod 1012 allows for a close fit to the shape of the fixing rod 1012, increasing the contact area between the assembly part 1 and the fixing rod 1012, thereby improving the clamping stability and reducing the relative sliding between the clamping plates 111 and the fixing rod 1012, reducing the risk of the entire device shaking due to component instability.
[0044] In a specific embodiment of the screw assembly 12 described above, the screw assembly 12 includes multiple connecting screws 121. Multiple coaxially arranged through holes are formed on the opposite sidewalls of the two connecting plates 11. The multiple connecting screws 121 are correspondingly assembled within the multiple through holes, and both ends of the connecting screws 121 extend out of the through holes and are respectively screwed with nuts 122. Through the cooperation of the multiple connecting screws 121 and nuts 122, the distance between the two connecting plates 11 can be precisely adjusted, allowing the assembly part 1 to better adapt to fixing rods 1012 of different diameters, ensuring optimal fit between the assembly part 1 and the fixing rod 1012, thereby improving clamping stability.
[0045] In the above embodiment, the screw assembly 12 further includes a plurality of limiting pins 123. Limiting holes are formed at both ends of the connecting screw 121 along its radial direction. The plurality of limiting pins 123 can be correspondingly inserted into the limiting holes to limit the position of the nut 122. This limits the position of the nut 122 on the connecting screw 121, preventing the nut 122 from being excessively twisted out and falling off the connecting screw 121 when the assembly part 1 is disassembled, facilitating the next installation and clamping. Furthermore, one of the limiting pins 123 can stop the corresponding nut 122, supporting it during clamping, facilitating the clamping of another nut 122, and increasing the clamping force.
[0046] The working principle of the blowout preventer gate replacement device of this utility model is as follows:
[0047] The assembly unit is clamped and mounted on the fixed rod of the hydraulic cylinder, serving to support and connect subsequent structures. The first end of the first swing arm is rotatably mounted on the top of the assembly unit. When the gate needs to be replaced, the position can be adjusted by rotating the first swing arm as needed. The middle section of the second swing arm is rotatably mounted on the second end of the first swing arm, further increasing the flexibility of position adjustment. The lifting ring in the gate lifting assembly is mounted on the first end of the second swing arm via a pulley system. When the manual winch is working, the winding drum is rotated, causing the lifting rope to pass over the fixed pulley, moving the movable pulley vertically downward, and thus moving the lifting ring downward. The lifting ring is then rotatably screwed into the lifting hole of the gate. By operating the manual winch and turning the crank, the lifting rope is retracted onto the winding drum, thereby lifting the gate. Pushing the two swing arms can move the lifted gate to the outside of the hydraulic cylinder, causing the gate to descend again to the ground. The lifting ring is then removed, the gate is replaced and connected, the replaced gate is lifted, moved to the gate assembly position, and lowered so that the assembly hole at the bottom of the gate is fitted onto the gate assembly shaft. The lifting ring connection is then released, completing the gate replacement.
[0048] Therefore, by using this gate auxiliary replacement device, the operator can easily control the lifting and lowering of the gate assembly with a manual winch. The rotation design of the second swing arm and the first swing arm allows the lifting ring to be accurately aligned with the lifting hole, facilitating the replacement operation. Furthermore, the detachable assembly and the flexible first and second swing arms enable the device to adapt to different models and installation positions of gate blowout preventers, making it widely applicable.
[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A gate auxiliary replacement device for a gate blowout preventer, the gate blowout preventer (100) comprising a gate blowout preventer body and a hydraulic cylinder (101) arranged horizontally opposite to each other and spaced apart, the gate blowout preventer body having a gate inlet / outlet for the gate (102) to enter and exit on one side corresponding to the hydraulic cylinder (101), the driving end of the hydraulic cylinder (101) being provided with a gate assembly shaft (1011), the bottom end of the gate (102) being quickly detachably mounted on the gate assembly shaft (1011), characterized in that, include: Assembly part (1), which is detachably connected to the housing of the hydraulic cylinder (101); The swing arm has a gate assembly position on the outside of the gate inlet and outlet, and a gate replacement position on the outside of the housing of the hydraulic cylinder (101). The first end of the swing arm is rotatably connected to the assembly part (1) and can be subjected to external force so that its second end can be rotated to the gate assembly position or the gate replacement position. A gate lifting assembly (4) is installed at the second end of the swing arm. When the gate (102) is located at the gate assembly position, the second end of the swing arm rotates to the gate assembly position. The gate lifting assembly (4) connects to and vertically lifts the gate (102) away from the gate assembly shaft (1011). The second end of the swing arm rotates and transports the gate (102) to the gate replacement position.
2. The gate auxiliary replacement device for a gate blowout preventer according to claim 1, characterized in that, The swing arm includes: The first swing arm (2) has a first end rotatably connected to the assembly part (1) and a second end that can be rotated to the gate assembly position or the gate replacement position. The second swing arm (3) has a rotation plane that is parallel to the rotation plane of the first swing arm (2). Its middle section is rotatably connected to the second end of the first swing arm (2). The gate lifting assembly (4) is installed on the second swing arm (3). When the gate (102) is located in the gate assembly position, the second end of the first swing arm (2) rotates to the gate assembly position. There is an angle between the first swing arm (2) and the second swing arm (3). The first end of the second swing arm (3) can rotate to the gate assembly position, and the second end can rotate to the outside of the housing of the hydraulic cylinder (101) so that the lifting connector of the gate lifting assembly (4) moves accordingly to above the gate (102).
3. The gate auxiliary replacement device for a gate blowout preventer according to claim 2, characterized in that, The gate lifting assembly (4) includes a pulley block (43) and a manual winch (42). The pulley block (43) is installed at the first end of the second swing arm (3). The manual winch (42) is installed at the second end of the second swing arm (3) and a lifting rope is wound around it. The other end of the lifting rope can be wound around the pulley block (43). The lifting connector is a lifting ring (41) and is installed on the pulley block (43). The gate (102) and the lifting ring (41) have lifting holes on their opposite walls that match the lifting ring (41).
4. The gate auxiliary replacement device for a gate blowout preventer according to claim 3, characterized in that, The manual winch (42) is a two-way self-locking manual winch, used to fix the gate (102) at a certain height position when raising and lowering it.
5. A gate auxiliary replacement device for a gate blowout preventer according to claim 3, characterized in that, The pulley assembly (43) includes multiple fixed pulleys (431) and one movable pulley (432). The first end of the second swing arm (3) is provided with multiple pulley mounting holes spaced apart through its upper and lower plates. A rope feeding hole is provided between the multiple pulley mounting holes. The multiple fixed pulleys (431) are respectively rotatably installed in the pulley mounting holes. The movable pulley (432) is rotatably installed on the top of the lifting ring (41). The second end of the lifting rope is wound around the fixed pulleys (431) and the movable pulley (432) to adjust the height position of the lifting ring (41).
6. The gate auxiliary replacement device for a gate blowout preventer according to claim 1, characterized in that, The assembly part (1) includes a set of symmetrically arranged connecting plates (11). The two connecting plates (11) are connected by a screw assembly (12). A clamping plate (111) is integrally fixed on the lower plate surface of each of the two connecting plates (11) and the two are arranged symmetrically. A plurality of fixing rods (1012) are arranged circumferentially on the outer side of the hydraulic cylinder (101). The opposite sidewalls of the two connecting plates (11) can clamp and fix the adjacent plurality of fixing rods (1012).
7. A gate auxiliary replacement device for a gate blowout preventer according to claim 6, characterized in that, Arc-shaped clamping grooves are provided on the opposite sidewalls of the two clamping plates (111) along the axial direction of the fixing rod (1012), and the radial cross-section of the arc-shaped clamping grooves matches the radial cross-section of the fixing rod (1012).
8. A gate auxiliary replacement device for a gate blowout preventer according to claim 6, characterized in that, The screw assembly (12) includes multiple connecting screws (121). Multiple coaxially arranged assembly holes are provided on the opposite sidewalls of the two connecting plates (11). The multiple connecting screws (121) are correspondingly assembled in the multiple assembly holes. The two ends of the connecting screws (121) extend out of the assembly holes and are respectively screwed with nuts (122).
9. A gate auxiliary replacement device for a gate blowout preventer according to claim 8, characterized in that, The screw assembly (12) also includes a plurality of limiting pins (123). Both ends of the connecting screw (121) are provided with limiting holes along their radial direction. The plurality of limiting pins (123) can be inserted into the limiting holes to limit the nut (122).