Fracturing equipment

Abstract

The invention relates to the technical field of oil and gas exploitation equipment, and particularly discloses fracturing equipment which comprises a first mounting bin mounted on an offshore oil and gas platform body, a movable supporting table is arranged in the first mounting bin, and a first spring is connected between the movable supporting table and the first mounting bin. A movable plate is arranged in a first mounting groove, a supporting column is arranged on the movable plate, during use, the supporting column can support a first piston rod part, the size of the inner space of a main pipe fitting is kept constant, and when the shaking degree is too large, a mounting block can make the first piston rod part and the supporting column staggered mutually due to transverse swinging, so that the first piston rod part and the supporting column are separated from each other; when the support of the first piston rod piece is released, the first piston rod piece can be driven to move downwards by overlarge pressure generated by shaking in the main pipe piece, a certain pressure release space is provided, and insufficient safety caused by overlarge pressure in the main pipe piece and all pipelines connected with the main pipe piece is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of marine oil and gas production equipment, and in particular to a fracturing equipment. Background Art

[0002] Oil and gas resources are one of the main energy sources in modern society. In the process of oil and gas resource exploitation, a variety of large-scale equipment is needed, and fracturing equipment is one of them. Fracturing the formation through fracturing equipment is one of the common ways to increase oil and gas production. It presses the formation open by sending a large amount of fracturing fluid into the well at high pressure, and squeezes the supporting particles in the fracturing fluid into the cracks to ensure that the cracks remain in the state of being pressed open, so that the subsequent oil and gas can smoothly enter the well space, thereby achieving the purpose of increasing production;

[0003] Existing fracturing equipment is often used on offshore oil and gas production platforms. However, during use, offshore oil and gas production platforms are limited by the use environment and many of them are supported by floating wood. Therefore, during use, they are inevitably prone to shaking due to factors such as ocean waves. When currently fracturing equipment is used in this environment, its main pipeline and the well part are often connected by flexible pipelines to avoid damage to the pipeline due to shaking during use. However, in actual application, severe shaking can easily cause surging, water hammer and other phenomena in the pipe. At the same time, the flexible pipe itself will also undergo a certain degree of deformation, causing the pressure inside the entire pipe to change too much. Excessive changes in the pressure inside the pipe will seriously affect the overall production safety, especially when the pressure suddenly increases, which will cause the equipment itself to rupture and damage or the formation to be suddenly and drastically fractured, making the entire formation unstable. Summary of the invention

[0004] The object of the present invention is to provide a fracturing device to solve the problem of insufficient safety of the existing fracturing devices when used on offshore oil and gas platforms in the above background.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A fracturing device, comprising a first installation chamber installed on an offshore oil and gas platform body, characterized in that a movable support platform is arranged inside the first installation chamber, and a first spring is connected between the movable support platform and the first installation chamber, a second installation chamber is installed on the top of the movable support chamber, and a main pipe is installed on the top of the second installation chamber, one end of the main pipe is connected to a first flexible pipeline, and fracturing pumps are evenly installed on both ends of the top of the second installation chamber, the output end of the fracturing pump is connected to the main pipe through a connecting pipe, and the input end of the fracturing pump is connected to a second flexible pipeline;

[0007] A mounting block is fixed at the bottom of the outer wall of the main pipe. A first mounting groove is formed at the bottom of the mounting block, and a receiving hole is formed at the top inside the first mounting groove. A through hole is reserved at the top inside the receiving hole. A reserved chamber communicating with the through hole and the main pipe is reserved inside the mounting block;

[0008] A first piston rod member is arranged inside the reserved chamber, and a second spring is connected between the first piston rod member and the bottom inside the reserved chamber. An actuating mechanism for supporting the first piston rod member is arranged inside the first mounting groove;

[0009] A rubber bladder is mounted on the inner side wall of the receiving hole, and a second mounting groove is formed on one side of the mounting block.

[0010] As a further scheme of the present invention: the actuating mechanism includes a movable plate arranged inside the first mounting groove. A third spring is connected between the movable plate and the inner side wall of the first mounting groove. A support column is mounted at the middle position of the top of the movable plate, and a counterweight block is fixed at the bottom of the movable plate.

[0011] As a further scheme of the present invention: the support column and the movable plate are integrally manufactured, and the central axis of the support column coincides with the central axis of the first piston rod member.

[0012] As a further scheme of the present invention: hydraulic cylinders are mounted on both sides of the bottom inside the reserved chamber, and a gap is left between the top end of the hydraulic cylinder and the first piston rod member.

[0013] As a further scheme of the present invention: a disc extrusion block is mounted on the outer side of the first piston rod member near the bottom end, and a ball is arranged at the bottom end of the first piston rod member.

[0014] As a further scheme of the present invention: a gap is left between the disc extrusion block and the inner side wall of the receiving hole, and the central axis of the disc extrusion block coincides with the central axis of the rubber bladder.

[0015] As a further scheme of the present invention: a hydraulic oil storage chamber is mounted on one side of the second mounting groove close to the rubber bladder, and the hydraulic oil storage chamber communicates with the inner cavity of the rubber bladder. A second piston rod member penetrates through the side of the hydraulic oil storage chamber far from the rubber bladder, and a fourth spring is connected between the second piston rod member and the hydraulic oil storage chamber.

[0016] As a further solution of the present invention: a mounting plate is installed at the inner bottom of the second mounting groove, and a special-shaped hole is opened on one side of the mounting plate, a mounting hole for installing a push-type stop button is opened on the top side of the special-shaped hole away from the rubber bag, a damping block is arranged inside the special-shaped hole, and limiting grooves are arranged on both sides of the bottom of the damping block, a third mounting groove is opened at the bottom of the special-shaped hole, and a wedge block is arranged inside the third mounting groove, and a fifth spring is connected between the wedge block and the mounting plate.

[0017] As a further solution of the present invention: the push-to-stop button is electrically connected to the fracturing pump, and the height of the push-to-stop button is greater than the depth of the mounting hole.

[0018] As a further solution of the present invention: a fixing plate is installed on a side of the top of the second installation groove away from the rubber bag, and an electric push rod is installed on a side of the fixing plate close to the rubber bag.

[0019] Beneficial effects of the present invention:

[0020] (1) The present invention provides a movable plate inside the first mounting groove, and a support column is provided on the movable plate. When in use, the support column can support the first piston rod, and the size of the internal space of the main pipe component is kept constant. When the shaking degree is too large, the mounting block will cause the first piston rod and the support column to stagger with each other due to lateral swing, and the support of the first piston rod will be released. The excessive pressure generated in the main pipe component due to the shaking will drive the first piston rod to move downward, providing a certain pressure release space, thereby avoiding excessive pressure inside the main pipe component and various parts of the pipeline connected thereto, resulting in insufficient safety;

[0021] (2) The present invention connects the first installation chamber and the second installation chamber through a movable support platform and a first spring, so that when shaking occurs, there is a certain elastic activity space between the second installation chamber and the main body of the offshore oil and gas platform. At the same time, during the shaking process, the first spring will deform to consume the energy of the shaking, thereby reducing the impact of the shaking on the main pipe component;

[0022] (3) The present invention connects the movable plate and the mounting block through the third spring, and a counterweight is installed at the bottom of the movable plate, so that when the second mounting bin shakes, the movable plate will delay the shaking amplitude of the second mounting bin due to gravity and its own stability, and consume energy through the deformation of the third spring, thereby further reducing the impact of the shaking on the main pipe component;

[0023] (4) In the present invention, a disc extrusion block is provided on the first piston rod member, and a rubber bladder is provided in the accommodation hole. When the shaking amplitude is too large and causes the support column and the first piston rod member to be misaligned, the disc extrusion block will fully extrude the rubber bladder, and the hydraulic oil in the rubber bladder will be extruded and transported to the inside of the hydraulic oil storage bin. Subsequently, the second piston rod member will push the damping block to press the push-button shutdown key, causing multiple fracturing pumps to stop operating automatically, avoiding the situation where the pressure in the main pipe continues to increase due to the inability of the staff to manually stop the machine in a timely manner under extreme shaking conditions, and further ensuring the safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 is the front view structural schematic diagram of the present invention;

[0026] Figure 2 is the front view sectional structural schematic diagram of the present invention;

[0027] Figure 3 is in the present invention Figure 2 enlarged schematic diagram of part A;

[0028] Figure 4 is the side view sectional structural schematic diagram of the present invention;

[0029] Figure 5 is the front view structural schematic diagram of the first piston rod member in the present invention;

[0030] Figure 6 is the front view structural schematic diagram of the damping block in the present invention;

[0031] Figure 7 is the front view structural schematic diagram of the movable plate in the present invention;

[0032] Figure 8 is the front view structural schematic diagram of the rubber bladder in the present invention.

[0033] In the figure: 1. Main body of offshore oil and gas platform; 2. First installation bin; 3. Movable support platform; 4. First spring; 5. Second installation bin; 6. Main pipe; 7. First flexible pipe; 8. Fracturing pump; 9. Connecting pipe; 10. Second flexible pipe; 11. Installation block; 12. First installation groove; 13. Accommodating hole; 14. Through hole; 15. Reserved chamber; 16. First piston rod member; 17. Second spring; 18. Movable plate; 19. Third spring; 20. Support column; 21. Counterweight; 22. Hydraulic cylinder; 23. Rubber bladder; 24. Disc extrusion block; 25. Ball; 26. Second installation groove; 27. Hydraulic oil storage bin; 28. Second piston rod member; 29. Fourth spring; 30. Installation plate; 31. Shaped hole; 32. Installation hole; 33. Press-type shutdown button; 34. Damping block; 35. Limit groove; 36. Third installation groove; 37. Wedge block; 38. Fifth spring; 39. Fixed plate; 40. Electric push rod. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0035] Embodiment 1:

[0036] Please refer to Figures 1 - 5 and Figure 7 As shown, a fracturing device includes a first installation bin 2 installed on the main body 1 of the offshore oil and gas platform. The first installation bin 2 is the same as the existing similar offshore oil and gas exploitation platforms supported by floating logs.

[0037] A movable support platform 3 is arranged inside the first installation bin 2, and a first spring 4 is connected between the movable support platform 3 and the first installation bin 2. A second installation bin 5 is installed on the top of the movable support platform 3, and a main pipe 6 is installed on the top of the second installation bin 5. The movable support platform 3 is slidably connected to the first installation bin 2, and there is space around the inner wall of the first installation bin 2 and the movable support platform 3. The movable support platform 3 and the inner wall of the first installation bin 2 are connected by multiple groups of first springs 4. When the main body 1 of the offshore oil and gas platform shakes, the influence on the movable support platform 3 and the second installation bin 5 and the main pipe 6 thereon will be reduced, and the first spring 4 will undergo corresponding deformation and consume the energy of the shake.

[0038] One end of the main pipe 6 is connected to a first flexible pipe 7. At both ends of the top of the second installation chamber 5, fracturing pumps 8 are evenly installed. The output end of the fracturing pump 8 is connected to the main pipe 6 through a connecting pipe 9, and the input end of the fracturing pump 8 is connected to a second flexible pipe 10. The first flexible pipe 7 is connected to the wellhead sealing part in the sea, and the second flexible pipe 10 is connected to the fracturing fluid supply equipment. During use, multiple groups of fracturing pumps 8 simultaneously and evenly pressurize and inject fracturing fluid into the interior of the main pipe 6. The fracturing fluid in the main pipe 6 enters the well through the first flexible pipe 7, realizing continuous and stable pressurization of the formation, causing the formation to crack relatively stably and increasing the subsequent oil and gas production capacity. This method is the same as existing similar fracturing equipment;

[0039] At the bottom of the outer wall of the main pipe 6, an installation block 11 is fixed. At the bottom of the installation block 11, a first installation groove 12 is opened, and at the inner top of the first installation groove 12, a receiving hole 13 is opened. At the top of the interior of the receiving hole 13, a through hole 14 is reserved. Inside the installation block 11, a reserved chamber 15 communicating with the through hole 14 and the main pipe 6 is reserved. The installation block 11 is processed by forging, and the first installation groove 12, the receiving hole 13, the through hole 14, and the reserved chamber 15 are formed during the forging process to ensure the strength of the installation block 11 during subsequent use;

[0040] Inside the reserved chamber 15, a first piston rod member 16 is arranged, and between the first piston rod member 16 and the inner bottom of the reserved chamber 15, a second spring 17 is connected. Inside the first installation groove 12, a moving mechanism for supporting the first piston rod member 16 is arranged. The moving mechanism includes a moving plate 18. The moving plate 18 is arranged inside the first installation groove 12, and between the moving plate 18 and the inner side wall of the first installation groove 12, a third spring 19 is connected. At the middle position of the top of the moving plate 18, a support column 20 is installed, and at the bottom of the moving plate 18, a counterweight block 21 is fixed. The first piston rod member 16 is connected to the installation block 11 for vertical sliding, and the moving plate 18 is connected to the installation block 11 for horizontal sliding. At the same time, there are gaps around the inner wall of the moving plate 18 and the first installation groove 12, and the moving plate 18 can slide horizontally in multiple directions inside the first installation groove 12. During use, when the second installation chamber 5 shakes, since the moving plate 18 is not fixedly connected to the installation block 11 and the counterweight block 21 is relatively heavy, the moving plate 18 will act as a stabilizer relative to the installation block 11. The moving plate 18 will retard the shaking action of the installation block 11 through its own stability, and at the same time, the third spring 19 will undergo corresponding deformation to consume the energy of the shaking, thereby reducing the impact of the shaking on the installation block 11 and further increasing the stability of the main pipe 6 on the second installation chamber 5;

[0041] When the main body 1 of the offshore oil and gas platform experiences large - amplitude shaking due to extreme weather or other conditions and is no longer suitable for operation, the relative displacement between the installation block 11 and the movable plate 18 also increases accordingly until the first piston rod member 16 and the support column 20 are vertically misaligned. At this time, the support of the support column 20 for the first piston rod member 16 is released. After the first piston rod member 16 moves down a certain distance, it is elastically supported by the second spring 17. During the subsequent shaking of the main body 1 of the offshore oil and gas platform, when surging and water hammer occur inside the main pipe 6 and the connected parts, causing the pressure to suddenly increase, part of the fracturing fluid in the main pipe 6 will enter the internal reserved chamber 15, squeezing the first piston rod member 16 downward, avoiding potential safety hazards such as excessive pressure in the main pipe 6 causing equipment damage or suddenly fracturing the formation by a large margin. At the same time, the second spring 17 undergoes corresponding deformation to consume energy;

[0042] The support column 20 and the movable plate 18 are integrally manufactured, and the central axis of the support column 20 coincides with the central axis of the first piston rod member 16, ensuring the connection strength between the movable plate 18 and the support column 20 during use. At the same time, under normal conditions, the rod - shaped parts of the support column 20 and the first piston rod member 16 can overlap vertically with each other, and the support column 20 can support the first piston rod member 16;

[0043] Hydraulic cylinders 22 are installed on both sides of the bottom inside the reserved chamber 15, and there is a gap between the top of the hydraulic cylinder 22 and the first piston rod member 16. The hydraulic cylinder 22 is controlled by a controller. When the operation resumes after the large - amplitude shaking ends, the staff can control the output part of the hydraulic cylinder 22 to move upward through the controller, pushing the first piston rod member 16 back to the initial position. Subsequently, the movable plate 18 returns to the initial position under the action of the third spring 19 and supports the first piston rod member 16 again;

[0044] It should be noted that since the movable support platform 3 is slidably connected to the first installation bin 2 and the weight of the counterweight 21 is relatively heavy, when the main body 1 of the offshore oil and gas platform shakes, the movable support platform 3 and the parts on it will also, due to their own stability and not being fixedly connected to the first installation bin 2, lag the shaking of the main body 1 of the offshore oil and gas platform. The movable support platform 3 and the second installation bin 5 on it will also act as stabilizers to play a certain role in stabilizing the overall main body 1 of the offshore oil and gas platform;

[0045] Furthermore, the counterweight 21 can be replaced by a gyro stabilizer with an autonomous rotation function to provide its own stability.

[0046] Embodiment 2

[0047] Based on the above - mentioned Embodiment 1, please refer to Figures 1 - 6 and Figure 8As shown, a rubber bladder 23 is installed on the inner wall of the accommodation hole 13. A second installation groove 26 is formed on one side of the installation block 11. The rubber bladder 23 is made of corrosion-resistant rubber, and the inner cavity of the rubber bladder 23 is filled with hydraulic oil;

[0048] A disc extrusion block 24 is installed on the outer side of the first piston rod member 16 near the bottom end, and a ball 25 is arranged at the bottom end of the first piston rod member 16. The ball 25 can ensure that during the shaking process, the installation block 11 can shake independently of the movable plate 18. During application, multiple groups of balls 25 can be arranged to ensure the support effect;

[0049] A gap is left between the disc extrusion block 24 and the inner wall of the accommodation hole 13, and the central axis of the disc extrusion block 24 coincides with the central axis of the rubber bladder 23, so that the disc extrusion block 24 does not hinder the misalignment and up-and-down movement of the first piston rod member 16 and the support column 20;

[0050] A hydraulic oil storage chamber 27 is installed on one side of the second installation groove 26 close to the rubber bladder 23, and the hydraulic oil storage chamber 27 is communicated with the inner cavity of the rubber bladder 23. A second piston rod member 28 penetrates through the side of the hydraulic oil storage chamber 27 far from the rubber bladder 23, and a fourth spring 29 is connected between the second piston rod member 28 and the hydraulic oil storage chamber 27. The second piston rod member 28 is slidably connected to the hydraulic oil storage chamber 27. When the support column 20 and the first piston rod member 16 are misaligned due to large-amplitude shaking, under the action of gravity and the pressure in the main pipe member 6, the disc extrusion block 24 will squeeze the rubber bladder 23, so that the hydraulic oil in the rubber bladder 23 is squeezed and transported into the interior of the hydraulic oil storage chamber 27, and the second piston rod member 28 moves away from the rubber bladder 23 accordingly;

[0051] An installation plate 30 is installed at the inner bottom of the second installation groove 26. A special-shaped hole 31 is formed on one side of the installation plate 30. An installation hole 32 for installing a push-button shutdown button 33 is formed at the inner top of the special-shaped hole 31 on the side far from the rubber bladder 23. A damping block 34 is arranged inside the special-shaped hole 31. Limiting grooves 35 are formed on both sides of the bottom of the damping block 34. A third installation groove 36 is formed at the inner bottom of the special-shaped hole 31. A wedge-shaped block 37 is arranged inside the third installation groove 36. A fifth spring 38 is connected between the wedge-shaped block 37 and the installation plate 30. The push-button shutdown button 33 is electrically connected to the fracturing pump 8. The height of the push-button shutdown button 33 is greater than the depth of the installation hole 32. The damping block 34 is slidably connected to the installation plate 30. The wedge-shaped block 37 and the third installation groove 36 form a relative sliding structure. The top of the damping block 34 is arc-shaped near the edge of the push-button shutdown button 33. When there is a large amplitude of shaking and the disk extrusion block 24 squeezes the rubber bladder 23 to a sufficient extent so that the hydraulic oil in the rubber bladder 23 is squeezed into the internal part of the hydraulic oil storage bin 27, the second piston rod member 28 then forms a squeeze on the damping block 34. At this time, the edge part inside one set of limiting grooves 35 will squeeze the hypotenuse part of the wedge-shaped block 37, causing the wedge-shaped block 37 to be squeezed and move into the internal part of the third installation groove 36. So that under the action of sufficient pressure, the damping block 34 can move horizontally. The arc-shaped edge at the top of the damping block 34 can press the elastic part of the push-button shutdown button 33 upward. At the same time, the wedge-shaped block 37 is exactly aligned with the other set of limiting grooves 35. The wedge-shaped block 37 is inserted into it under the elastic action of the fifth spring 38. So that subsequently, without the action of sufficient external force, the damping block 34 can remain at the position where it presses the elastic part of the push-button shutdown button 33, and multiple fracturing pumps 8 are in a shutdown state, avoiding the situation that when there is a large amplitude of shaking that is not suitable for operation, the staff cannot timely stop the fracturing pump 8, resulting in a safety hazard caused by the continuous pressurization operation of the fracturing pump 8 on the main pipe 6, and during the subsequent continuous shaking process, the damping block 34 always remains at this position;

[0052] A fixing plate 39 is installed on the inner top of the second installation groove 26 on the side far from the rubber bladder 23. An electric push rod 40 is installed on the side of the fixing plate 39 close to the rubber bladder 23. The output end part of the electric push rod 40 is aligned with the damping block 34. And the output end part of the second flexible pipe 10 can be inserted into the internal part of the special-shaped hole 31. So that when the operation resumes after the large amplitude of shaking ends, the electric push rod 40 can be controlled to push the damping block 34 to the initial position where it does not press the push-button shutdown button 33, releasing the forced shutdown of the fracturing pump 8;

[0053] It should be noted that the elasticity of the fourth spring 29 is less than the force required for the elastic deformation of the rubber bladder 23 itself. When the rubber bladder 23 is squeezed by the disc extrusion block 24, the hydraulic oil in the rubber bladder 23 can be transported to the inside of the hydraulic oil storage bin 27 under the action of the extrusion force and drive the second piston rod member 28 to move, rather than undergoing a greater degree of deformation at other positions by itself;

[0054] Furthermore, the push-button shutdown button 33 can be in the form of a circuit breaker that can elastically recover. When the push-button shutdown button 33 is pressed, multiple fracturing pumps 8 can be shut down. Subsequently, the operator can further close the opening and closing switch of the fracturing pump 8. After the shaking ends, when the damping block 34 releases the extrusion of the push-button shutdown button 33 and the push-button shutdown button 33 elastically recovers, the fracturing pump 8 will not restart immediately. The operator needs to independently determine the time to resume operation through the opening and closing switch on the fracturing pump 8.

[0055] The working principle of the present invention: The device is powered by an external power supply or a storage battery. The fracturing pump 8, the hydraulic cylinder 22, and the electric push rod 40 are all controlled and used through a controller. The first flexible pipeline 7 is connected to the wellhead sealing part in the sea, and the second flexible pipeline 10 is connected to the fracturing fluid supply device. Multiple fracturing pumps 8 simultaneously and evenly pressurize and inject fracturing fluid into the inside of the main pipe member 6 to complete the above-mentioned fracturing task;

[0056] During use, when the main body 1 of the offshore oil and gas platform experiences small-amplitude shaking, since the movable support platform 3 is not directly fixedly connected to the first installation bin 2, and at the same time, the movable support platform 3 and the first installation bin 2 are connected by the first spring 4, the first installation bin 2 will not completely transmit the shaking to the movable support platform 3. The movable support platform 3 can reduce the influence it receives due to its own gravity stability. At the same time, due to the heavy weight of the counterweight 21 and the stability of the movable support platform 3 itself, the movable support platform 3 can play a certain role in retarding the shaking of the main body 1 of the offshore oil and gas platform in the reverse direction, thereby reducing the shaking of the main body 1 of the offshore oil and gas platform. At the same time, when the second installation bin 5 shakes due to the shaking of the main body 1 of the offshore oil and gas platform, the counterweight 21 will also retard the shaking of the second installation bin 5 due to gravity, its own stability, and the elasticity of the third spring 19, thereby increasing the stability of the main pipe member 6 on the second installation bin 5 and preventing the main pipe member 6 from shaking too much, causing the first flexible pipeline 7 to deform too much and large fluctuations in pressure such as surging and water hammer in the main pipe member 6;

[0057] When the overall shaking amplitude of the main body 1 of the offshore oil and gas platform becomes too large due to extreme weather or other reasons and is no longer suitable for operation, the shaking amplitude of the second installation bin 5 cannot be reduced to the safe range accordingly. The relative lateral movement amplitude between the second installation bin 5 and the movable plate 18 becomes larger until the first piston rod member 16 and the support column 20 are vertically displaced. At this time, the support column 20 releases the support for the first piston rod member 16, and the first piston rod member 16 descends a certain distance and is supported by the second spring 17. During subsequent shaking, when surging, water hammer and other phenomena occur inside the first piston rod member 16, the first piston rod member 16 can continue to move downward to provide a certain elastic space to avoid potential safety hazards caused by excessive internal pressure in the first piston rod member 16 and the parts connected thereto;

[0058] When the first piston rod member 16 and the support column 20 are vertically displaced and the first piston rod member 16 descends a certain distance, the disc extrusion block 24 can extrude the rubber bladder 23, so that the hydraulic oil in the rubber bladder 23 is extruded and transported to the inside of the hydraulic oil storage bin 27. The second piston rod member 28 then extrudes the damping block 34 a certain distance in the direction close to the electric push rod 40. The damping block 34 then extrudes the elastic part of the push-button shutdown key 33, and in the subsequent process, without the action of corresponding external forces, the damping block 34 remains in this position, causing multiple fracturing pumps 8 to stop running, avoiding further pressurization of the main pipe member 6 by the fracturing pumps 8 and further ensuring safety;

[0059] When continuing to operate after the shaking ends, the output end of the control hydraulic cylinder 22 moves upward and pushes the first piston rod member 16 to the initial position. The movable plate 18 and the counterweight 21 are reset under the elastic action of the third spring 19. The output end of the control hydraulic cylinder 22 descends to the initial state. The output end of the control electric push rod 40 pushes the damping block 34 to the initial position. The push-button shutdown key 33 is reset under its own elastic action, so that the above process can still be realized when encountering large-amplitude shaking again subsequently.

[0060] The above has described an embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A fracturing device, comprising a first installation chamber (2) installed on an offshore oil and gas platform body (1), characterized in that: A movable support platform (3) is arranged inside the first installation chamber (2), and a first spring (4) is connected between the movable support platform (3) and the first installation chamber (2); a second installation chamber (5) is installed on the top of the movable support platform (3), and a main pipe (6) is installed on the top of the second installation chamber (5); one end of the main pipe (6) is connected to a first flexible pipe (7); both ends of the top of the second installation chamber (5) are evenly installed with a fracturing pump (8); the output end of the fracturing pump (8) is connected to the main pipe (6) via a connecting pipe (9), and the input end of the fracturing pump (8) is connected to a second flexible pipe (10); A mounting block (11) is fixed to the bottom of the outer wall of the main pipe component (6), a first mounting groove (12) is provided at the bottom of the mounting block (11), a receiving hole (13) is provided at the top of the first mounting groove (12), a through hole (14) is reserved at the top of the receiving hole (13), and a reserved chamber (15) communicating with the through hole (14) and the main pipe component (6) is reserved inside the mounting block (11); A first piston rod (16) is disposed inside the reserved chamber (15), and a second spring (17) is connected between the first piston rod (16) and the bottom of the reserved chamber (15), and a movable mechanism for supporting the first piston rod (16) is disposed inside the first mounting groove (12); A rubber bag (23) is installed on the inner side wall of the accommodating hole (13), and a second installation groove (26) is opened on one side of the installation block (11).

2. A fracturing device according to claim 1, characterized in that: The movable mechanism comprises a movable plate (18), the movable plate (18) being arranged inside the first mounting groove (12), and a third spring (19) being connected between the movable plate (18) and the inner wall of the first mounting groove (12), a support column (20) being installed at the middle position of the top of the movable plate (18), and a counterweight block (21) being fixed at the bottom of the movable plate (18).

3. A fracturing device according to claim 2, characterized in that: The support column (20) and the movable plate (18) are manufactured in one piece, and the central axis of the support column (20) coincides with the central axis of the first piston rod (16).

4. A fracturing device according to claim 1, characterized in that: Hydraulic cylinders (22) are installed on both sides of the bottom of the reserved chamber (15), and a gap is left between the top of the hydraulic cylinder (22) and the first piston rod (16).

5. The fracturing equipment according to claim 1, characterized in that: A disc extrusion block (24) is installed on the outer side of the first piston rod (16) close to the bottom end, and a ball (25) is arranged at the bottom end of the first piston rod (16).

6. A fracturing device according to claim 5, characterized in that: A gap is left between the disc extrusion block (24) and the inner side wall of the accommodating hole (13), and the central axis of the disc extrusion block (24) coincides with the central axis of the rubber bag (23).

7. The fracturing equipment according to claim 1, characterized in that: A hydraulic oil storage bin (27) is installed on a side of the second installation groove (26) close to the rubber bag (23), and the hydraulic oil storage bin (27) is communicated with the inner cavity of the rubber bag (23). A second piston rod (28) penetrates through a side of the hydraulic oil storage bin (27) away from the rubber bag (23), and a fourth spring (29) is connected between the second piston rod (28) and the hydraulic oil storage bin (27).

8. The fracturing equipment according to claim 1, characterized in that: A mounting plate (30) is installed at the inner bottom of the second mounting groove (26), and a special-shaped hole (31) is provided on one side of the mounting plate (30). A mounting hole (32) for mounting a push-type stop button (33) is provided on the top of the special-shaped hole (31) away from the rubber bag (23). A damping block (34) is provided inside the special-shaped hole (31), and limiting grooves (35) are provided on both sides of the bottom of the damping block (34). A third mounting groove (36) is provided at the bottom of the special-shaped hole (31), and a wedge block (37) is provided inside the third mounting groove (36). A fifth spring (38) is connected between the wedge block (37) and the mounting plate (30).

9. A fracturing device according to claim 8, characterized in that: The push-type shut-off button (33) is electrically connected to the fracturing pump (8), and the height of the push-type shut-off button (33) is greater than the depth of the mounting hole (32).

10. The fracturing equipment according to claim 1, characterized in that: A fixing plate (39) is installed on a side of the top of the second mounting groove (26) away from the rubber bag (23), and an electric push rod (40) is installed on a side of the fixing plate (39) close to the rubber bag (23).

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