Slurry splash-proof box clamping structure and splash-proof box

Abstract

The invention discloses a mud splash-proof box clamping structure and a splash-proof box, and belongs to the technical field of petroleum drilling machine machinery. The structure comprises a mud barrel assembly, the mud barrel assembly comprises a fixed half barrel and a movable half barrel which is hinged to the fixed half barrel and can rotate in the circumferential direction of the barrel wall of the fixed half barrel, a sealing assembly is arranged at the joint of the fixed half barrel and the movable half barrel, and a clamping device is arranged on the outer side of the mud barrel assembly; according to the clamping structure of the mud splash-proof box and the splash-proof box, on the aspect of structural design, the design advantage of a second sealing structure is utilized, original compression contact is changed into surface contact from linear contact, the sealing contact area is increased, higher pressure in a mud cylinder can be borne, sealing is more durable, and therefore the whole sealing effect is guaranteed.

Description

Technical Field

[0001] This invention relates to a mud splash guard clamping structure and splash guard, belonging to the field of oil drilling rig mechanical technology. Background Technology

[0002] During drilling and maintenance of oil wells, when pulling out of the drill string and disassembling the drill pipe, a large amount of mud is contained within the drill pipe. When the male thread of the previous drill pipe is disconnected from the female thread of the next drill pipe, the mud inside the drill pipe will splash out, contaminating the equipment on the drilling platform and wasting mud. Therefore, a mud cylinder is needed to seal the drill pipe to prevent mud leakage, thereby preventing mud splashing and avoiding the need for personnel to collect mud.

[0003] Previously, conventional mud cylinders were two-part flat-seal structures driven by a single-sided hydraulic cylinder. The disadvantages included: 1) Because the hydraulic cylinder for opening and closing the mud cylinder is farther away from the sealing surface, the force is reduced by the same amount, so the compression of the sealing surface is small.

[0004] 2) The sealing effect is affected by the processing and assembly. The parallelism and straightness between the moving and fixed cylinders must be considered to prevent the seal from being partially compressed while remaining loose, which directly affects the compression and ultimately the sealing effect. 3) After a certain period of use, the elasticity will decrease and the compression amount will further decrease.

[0005] This results in mud leakage on the sides and bottom, increasing the workload for workers to clean up, and also causing waste because the mud on the drilling platform is contaminated and cannot be reused.

[0006] CN202410209585.1 discloses a drilling tool construction mechanism, system and method. The structure adopts a single clamping structure, but the sealing effect in practical applications still needs further improvement.

[0007] CN201620262983.0 discloses a mud splash shield. In terms of structural design, the matching ends of the two semi-cylinders are provided with locking handles after they are closed. In practical applications, this structure should be an automated structure, and the design of this structure is to achieve closure. In terms of clamping force, it only has the effect of single weight. Summary of the Invention

[0008] The purpose of this invention is to address the aforementioned problems by providing a mud splash guard clamping structure and a mud splash guard, which can effectively increase the sealing effect of the mud cylinder, prevent splashing on the work surface, reduce mud leakage, save cleaning time, and prevent mud splashing and waste.

[0009] The technical solution adopted in this invention is as follows: A mud splash guard clamping structure includes a mud cylinder assembly, the mud cylinder assembly including a fixed half cylinder and a movable half cylinder hinged to the fixed half cylinder and rotatable along the circumferential direction of the wall of the fixed half cylinder, a sealing assembly is provided at the connection between the fixed half cylinder and the movable half cylinder, and a clamping device is provided on the outside of the mud cylinder assembly. The clamping device includes a first clamping device for opening / closing the mud cylinder assembly. The first clamping device includes an opening and closing telescopic device. One end of the opening and closing telescopic device is hinged to a fixed half cylinder or a movable half cylinder, and the other end is hinged to a movable half cylinder or a fixed half cylinder. The clamping device also includes a second clamping device for reinforcing the sealing effect.

[0010] Furthermore, the first clamping device also includes connecting seats respectively disposed on the fixed half-cylinder and the movable half-cylinder, and the two ends of the opening and closing telescopic device are respectively hinged to the connecting seats.

[0011] Furthermore, the first clamping device is located on one side of the hinge joint between the fixed half-cylinder and the movable half-cylinder, and the connecting seats are respectively located on both sides near the hinge joint between the fixed half-cylinder and the movable half-cylinder.

[0012] Furthermore, the second clamping device is located on the side where the mating surfaces of the fixed half-cylinder and the movable half-cylinder are closed.

[0013] Furthermore, the second clamping device includes a retractable drive unit and a tensioning mechanism for providing tension, the tensioning mechanism being driven by the drive unit.

[0014] Furthermore, the tensioning mechanism includes a pull rod arranged along the axis of the mud cylinder assembly. The pull rod can move up and down via a driving device, and a buckling mechanism is provided at both ends of the pull rod.

[0015] Furthermore, the latching mechanism includes a latch pin disposed on the movable half-cylinder, a base fixedly disposed on the fixed half-cylinder, and a rotatable latching plate disposed on the base. One end of the latching plate is hinged to the pull rod, and the other end of the latching plate is matched with the latch pin.

[0016] Furthermore, the locking pin is also provided with a roller, which matches the locking groove of the corresponding part of the locking plate.

[0017] Furthermore, the sealing assembly includes a first sealing structure and a second sealing structure.

[0018] A mud splash guard includes a mounting base, on which a column assembly is mounted, and a trolley assembly is mounted on the column assembly that moves up and down along the column assembly. A telescopic support arm assembly is mounted on the trolley assembly, and the end of the support arm assembly is provided with the aforementioned mud splash guard clamping structure.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present invention provides a mud splash box clamping structure and splash box. In terms of structural design, it utilizes the design advantages of the second sealing structure to change the previous compression contact from line to surface contact, thereby increasing the sealing contact area, which can withstand higher pressure inside the mud cylinder, and make the seal more durable, thus ensuring the overall sealing effect.

[0020] 2. In specific applications, the requirements for the straightness and parallelism of the moving and fixed cylinders during machining, as well as the assembly requirements for the gap between the moving and fixed cylinders during assembly, are reduced. Even if there are certain errors in the machining and assembly, the large compression of the second clamping device can still compress these gaps to achieve a seal, resulting in a very good sealing effect.

[0021] 3. The movable and fixed cylinders are long because they need to accommodate drill rods of different heights and types. As a result, the thrust of the original opening and closing cylinder is mainly concentrated in a certain range of these two points. However, the newly added second clamping device has a different range of length, which allows the force to be applied at four points. This makes the force on the vertical sealing rubber part greater and more even, and the compression effect better. Attached Figure Description

[0022] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is one of the schematic diagrams of the mud cylinder assembly.

[0024] Figure 3 This is the second schematic diagram of the mud cylinder assembly.

[0025] Figure 4 This is the third schematic diagram of the mud cylinder assembly.

[0026] Figure 5 This is a schematic diagram of the structure of the second clamping device in the open state.

[0027] Figure 6 This is a schematic diagram of the second clamping device in the closed state.

[0028] The markings in the diagram are: 1-mounting base, 2-column assembly, 3-trolley assembly, 4-support arm assembly, 5-mud cylinder assembly, 51-fixed half cylinder, 52-movable half cylinder, 53-sealing assembly, 531-first sealing structure, 532-second sealing structure, 54-first heavy clamping device, 541-opening and telescopic device, 542-connecting base, 55-second heavy clamping device, 551-drive device, 552-connecting rod, 553-clamping plate, 554-clamping pin, 555-base body. Detailed Implementation

[0029] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0030] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is merely one example of a series of equivalent or similar features.

[0031] Example 1 A mud splash guard clamping structure, such as Figures 1 to 6 As shown, it includes a mud cylinder assembly 5, which includes a fixed half cylinder 51 and a movable half cylinder 52 hinged to the fixed half cylinder 51 and rotatable along the circumferential direction of the wall of the fixed half cylinder 51. A sealing assembly 53 is provided at the connection between the fixed half cylinder 51 and the movable half cylinder 52. A clamping device is provided on the outside of the mud cylinder assembly 5. The clamping device includes a first heavy clamping device 54 for opening / closing the mud cylinder assembly 5. The first heavy clamping device 54 includes an opening and closing telescopic device 541. One end of the opening and closing telescopic device 541 is hinged to a fixed half cylinder 51 or a movable half cylinder 52, and the other end is hinged to a movable half cylinder 52 or a fixed half cylinder 51. The clamping device also includes a second clamping device 55 for reinforcing the sealing effect.

[0032] In this embodiment, as a specific design, in the traditional structural design, the movable cylinder, driven by the opening and closing cylinder (opening and closing telescopic device 541), merges the movable cylinder and the fixed cylinder into one, forming a complete cylinder. However, the force actually transmitted to the sealing surface for compression is almost only 1 / 5 of the cylinder thrust, resulting in the compression of the sealing rubber not exceeding 5mm. If the parallelism between the movable cylinder and the fixed cylinder is greater than the compression, the compression will be zero for some lengths of the entire mud cylinder, leading to unreliable sealing and leakage. Adding a second clamping device 55 further provides tension, increasing the pressure of the movable cylinder on the vertical sealing rubber, thereby achieving a more reliable sealing effect.

[0033] Based on the above-described structural design, the first clamping device 54 further includes connecting seats 542 respectively disposed on the fixed half-cylinder 51 and the movable half-cylinder 52, with both ends of the opening and closing telescopic device 541 hinged to the connecting seats 542. Through the design of the telescopic mechanism, an effective force can be provided when the mud cylinder assembly 5 needs to be opened or closed.

[0034] In the design of the above-mentioned specific structure, in the usual structural design, the first heavy clamping device 54 is located on the side where the fixed half cylinder 51 and the movable half cylinder 52 are hinged, and the connecting seat 542 is respectively located on both sides near the hinge of the fixed half cylinder 51 and the movable half cylinder 52.

[0035] To further ensure a sealing effect and provide a more effective pre-tightening force, the second clamping device 55 is located on the side where the mating surfaces of the fixed half-cylinder 51 and the movable half-cylinder 52 are located when they are closed. This achieves clamping force on both sides, reducing the requirements for the straightness and parallelism of the movable half-cylinder 52 and the fixed half-cylinder 51 during machining, as well as the assembly requirements for the gap between the movable and fixed cylinders during assembly. Even if there are certain errors in the machining and assembly, the larger compression amount of the second clamping device can still compress these gaps to achieve a seal, resulting in a very good sealing effect.

[0036] More specifically, the second clamping device 55 includes a retractable drive unit 551 and a tensioning mechanism for providing tensile force, the tensioning mechanism being driven by the drive unit 551. The clamping force provided by the drive unit 551 ensures a sealing effect.

[0037] The second clamping device 55 is further optimized. Specifically, the driving device 551 is a telescopic rod (a telescopic hydraulic cylinder is preferred). The tensioning mechanism includes a pull rod arranged along the axis of the mud cylinder assembly 5. The pull rod can move up and down through the driving device 551, and a latching mechanism is provided at both ends of the pull rod. This structure design can effectively ensure the opening or closing of the mud cylinder assembly 5, and also ensure that the drill pipe can be easily entered and exited. It can also realize automated latching and provide tension. In other embodiments, the driving device can be a gear, worm gear, sprocket, or other device that can drive the pull rod to linear motion. Correspondingly, when the driving device is a gear, worm gear, or sprocket, the pull rod is set in the form of a rack, worm gear, or chain.

[0038] As a more specific design, the latching mechanism includes a latching pin 554 mounted on the movable half-cylinder 52, a base 555 fixedly mounted on the fixed half-cylinder 51, and a rotatable latching plate 553 mounted on the base 555. One end of the latching plate 553 is hinged to the pull rod, and the other end of the latching plate 553 is matched with the latching pin 554. This structural design effectively enables the assembly of the latching plate 553 and the latching pin 554, and also facilitates the disassembly of the latching plate 553 and the latching pin 554, effectively ensuring the normal operation of the entire mud cylinder assembly 5.

[0039] More specifically, to facilitate the assembly of the card plate 553 and the card pin 554, the card pin 554 is also provided with a roller, and the card plate 553 is provided with a card slot, and the roller is adapted to the card slot.

[0040] In the specific structural design described above, the specific actions are as follows: After the opening and closing telescopic device 541 pushes the movable half-cylinder 52 to the fixed half-cylinder 51 and closes it, the drive device 551 retracts, driving the connecting rod 552 to move upward. The connecting rod 552 drives the clamping plate 553 to rotate around the center of the fixed pin on the base 555; the left end of the clamping plate 553 moves upward, and the right end moves downward; the downward movement of the right end clamps the roller, creating a leftward and downward component force on the roller. The above operation is repeated in reverse during the opening process of the mud cylinder assembly 5.

[0041] Based on the specific structural design described above, the sealing assembly 53 includes a first sealing structure 531 and a second sealing structure 532. This dual sealing structure further ensures the overall sealing effect of the structure.

[0042] Example 2 A mud splash shield includes a mounting base 1, on which a column assembly 2 is mounted. The column assembly 2 is provided with a trolley assembly 3 that moves up and down along the column assembly 2. The trolley assembly 3 is provided with a telescopic support arm assembly 4. The end of the support arm assembly 4 is provided with a mud splash shield clamping structure as described in Embodiment 1.

[0043] As a specific design feature, depending on the design requirements, the mud splash guard also includes a threaded oil device.

[0044] In this embodiment, the flexible robotic arm is fully utilized to allow the mud cylinder assembly to be flexibly adjusted in position according to environmental requirements, effectively ensuring the overall performance.

[0045] In summary: 1. The present invention provides a mud splash box clamping structure and splash box. In terms of structural design, it utilizes the design advantages of the second sealing structure to change the previous compression contact from line to surface contact, thereby increasing the sealing contact area, which can withstand higher pressure inside the mud cylinder, and make the seal more durable, thus ensuring the overall sealing effect.

[0046] 2. In specific applications, the requirements for the straightness and parallelism of the moving and fixed cylinders during machining, as well as the assembly requirements for the gap between the moving and fixed cylinders during assembly, are reduced. Even if there are certain errors in the machining and assembly, the large compression of the second clamping device can still compress these gaps to achieve a seal, resulting in a very good sealing effect.

[0047] 3. The movable and fixed cylinders are long because they need to accommodate drill rods of different heights and types. As a result, the thrust of the original opening and closing cylinder is mainly concentrated in a certain range of these two points. However, the newly added second clamping device has a different range of length, which allows the force to be applied at four points. This makes the force on the vertical sealing rubber part greater and more even, and the compression effect better.

[0048] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A mud splash guard box clamping structure, characterized by: The mud barrel assembly comprises a fixed half barrel and a movable half barrel hinged to the fixed half barrel and rotatable along the circumference of the fixed half barrel, and a sealing assembly is arranged at the joint of the fixed half barrel and the movable half barrel, and a clamping device is arranged outside the mud barrel assembly; The clamping device comprises a first clamping device for opening / closing the mud barrel assembly, and the first clamping device comprises an opening / closing telescopic device, one end of which is hinged to the fixed half barrel or the movable half barrel, and the other end is hinged to the movable half barrel or the fixed half barrel; The clamping device further comprises a second clamping device for reinforcing the sealing effect.

2. The mud splash-proof box clamping structure according to claim 1, characterized in that: The first clamping device further comprises a connecting seat arranged on the fixed half barrel and the movable half barrel respectively, and the two ends of the opening / closing telescopic device are hinged to the connecting seats respectively.

3. The mud splash guard box clamping structure of claim 2, wherein: The first clamping device is arranged on one side of the hinged part of the fixed half barrel and the movable half barrel, and the connecting seats are arranged on the two sides close to the hinged part of the fixed half barrel and the movable half barrel respectively.

4. The mud splash guard box clamping structure of claim 3, wherein: The second clamping device is arranged on one side of the matching surface when the fixed half barrel and the movable half barrel are closed.

5. The mud splash-proof box clamping structure according to claim 1 or 4, characterized in that: The second clamping device comprises a telescopic driving device and a tensioning mechanism for providing tension, and the tensioning mechanism is driven by the driving device.

6. The mud splash guard box clamping structure of claim 5, wherein: The tensioning mechanism comprises a pull rod arranged along the axis of the mud barrel assembly, the pull rod is movable up and down by the driving device, and the two ends of the pull rod are provided with a buckle mechanism.

7. The mud saver clamp of claim 6, wherein: The buckle mechanism comprises a pin arranged on the movable half barrel, a seat body fixedly arranged on the fixed half barrel, and a rotatable clamping plate arranged on the seat body, one end of the clamping plate is hinged to the pull rod, and the other end of the clamping plate is matched with the pin.

8. The mud saver clamp of claim 7, wherein: The pin is further provided with a roller, and the roller is matched with a clamping groove in the corresponding part of the clamping plate.

9. The mud saver clamp of claim 1, wherein: The sealing assembly comprises a first sealing structure and a second sealing structure.

10. A splash box for a slurry, characterized by: The mounting seat is provided with a column assembly, the column assembly is provided with a trolley assembly movable up and down along the column assembly, the trolley assembly is provided with a telescopic support arm assembly, and the end of the support arm assembly is provided with a mud splash-proof box clamping structure according to any one of claims 1-9.

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