Well killing manifold with blowout prevention function

Abstract

The invention discloses a well killing manifold with a blowout prevention function, and relates to the technical field of petroleum well manifolds. The well killing manifold with the blowout prevention function comprises a main body, the input end of the main body is connected with an oil inlet pipe through a flange, a pressure detector is installed on the oil inlet pipe, and a first cavity is formed in the main body; two first driving motors are symmetrically installed at the bottom of the main body, two first screw rods are symmetrically and rotatably installed in the first cavity, the output ends of the two first driving motors are connected with the bottoms of the two first screw rods correspondingly, and a plugging check block is slidably installed in the first cavity; when the pressure detector detects that the oil pressure in the oil inlet pipe exceeds the standard, the first driving motor drives the first screw rod to rotate by receiving a signal of the pressure detector, so that the upper fixing block and the lower fixing block drive the plugging stop block to move downwards, the plugging stop block stops oil from passing, plugging is completed, and the blowout prevention effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of oil well manifolds, in particular to a well-killing manifold with a blowout prevention function. Background Art

[0002] In oil and gas drilling operations, blowout control is a core component of operational safety. Kill manifolds, a key component of well control systems, are primarily used to kill the well by injecting high-pressure drilling fluid in the event of an overflow or kick, thereby balancing formation pressure and preventing accidents such as kicks and blowouts.

[0003] During the use of the existing well killing manifold, due to reasons such as oil leakage from the drilling throttle tube or leakage of drilling mud, the oil well may suddenly gush out oil and gas due to the lack of blowout prevention function, causing damage to the manifold and resulting in safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a well-killing manifold with a blowout prevention function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a well-killing manifold with a blowout prevention function, the well-killing manifold with a blowout prevention function includes a main body, the input end of the main body is connected to an oil inlet pipe through a flange, the oil inlet pipe is installed with a pressure detector, the output end of the main body is connected to an oil outlet pipe, a first chamber is provided in the main body, two first drive motors are symmetrically installed at the bottom of the main body, two first screws are symmetrically rotatably installed in the first chamber, the output ends of the two first drive motors are respectively connected to the bottoms of the two first screws, a blocking block is slidably installed in the first chamber, an oil through hole is opened on the blocking block, and an upper fixed block and a lower fixed block are slidably installed on the two first screws. The upper fixed block is in contact with the upper surface of the blocking block, and the lower fixed block is in contact with the lower surface of the blocking block. When the pressure detector detects that the oil pressure in the oil inlet pipe exceeds the standard, the first drive motor drives the first screw to rotate by receiving the signal of the pressure detector, so that the upper fixed block and the lower fixed block drive the blocking block to move downward, so that the blocking block blocks the passage of oil and completes the blocking. When the pressure detector detects that the oil pressure in the oil inlet pipe is appropriate, the first drive motor drives the first screw to rotate by receiving the signal of the pressure detector, so that the upper fixed block and the lower fixed block drive the blocking block to move upward, completing the resetting of the blocking block, so that the oil can pass through the oil through-hole, thereby completing rapid blocking and releasing, and achieving the effect of preventing blowouts.

[0006] As an optimal technical solution, a pin hole is provided at the lower part of the side of the main body close to the oil outlet pipe, and a telescopic cylinder is installed at the outer end of the circular groove. A fixed pin is installed on the output shaft of the telescopic cylinder, and the fixed pin passes through the pin hole. When the pressure detector detects that the oil pressure in the oil inlet pipe exceeds the standard, the telescopic cylinder drives the fixed pin to move away from the telescopic cylinder by receiving the signal from the pressure detector, so that the fixed pin is inserted into the oil through hole on the blocking block for fixing, thereby achieving the effect of enhancing the anti-blowout strength. When the pressure detector detects that the oil pressure in the oil inlet pipe is appropriate, the telescopic cylinder drives the fixed pin to move towards the telescopic cylinder by receiving the signal from the pressure detector, completes the reset, and causes the fixed pin to exit the oil through hole on the blocking block and release the fixation.

[0007] As an optimal technical solution, a limit switch is installed at the bottom of the first chamber, and the limit switch is electrically connected to the first drive motor. When the first drive motor drives the first screw to rotate by receiving a signal from the pressure detector, the upper fixed block and the lower fixed block drive the blocking block to move to the bottom of the first chamber, the limit switch is triggered, the power supply of the first drive motor is cut off, and the blocking block stops at the specified position, thereby achieving the effect of precise positioning.

[0008] As an optimal technical solution, a fixing flange is installed on the input end of the main body, and a connecting flange is installed at the port of the oil inlet pipe. The connecting flange is connected to the fixing flange and locked by bolts. A convex ring is installed on the fixing flange, and a ring groove is opened on the connecting flange. A sealing ring is sleeved in the ring groove. The convex ring is inserted in the ring groove. Through the connection between the connecting flange and the fixing flange, the convex ring is embedded in the ring groove, which facilitates the convex ring to squeeze the sealing ring, thereby achieving a sealing effect.

[0009] As an optimal technical solution, a sealing adjustment component and a sealing protection component are provided on the main body.

[0010] As a preferred technical solution, the sealing adjustment assembly includes a branch pipe, a rubber sleeve, a sliding rod, a limit shell, a fixing plate, a perforation, a slide plate, a storage chamber, a spring, a telescopic rod, an extrusion claw, a transmission ring, an extrusion rod, a through hole, an extrusion gasket, and a sealing ring; Two branch pipes are symmetrically arranged in the input pipe of the main body, and a rubber sleeve and a limit shell are installed at the end of the branch pipe away from the input pipe. A fixing plate is installed on the side of the main body close to the branch pipe, and a sliding rod is slidably installed on the fixing plate. A through-hole is provided on the limit shell, and the sliding rod passes through the through-hole and is slidably fitted. A slide plate is symmetrically installed on the side of the main body close to the oil inlet pipe. Two receiving chambers are symmetrically arranged on the side of the main body close to the oil inlet pipe, and telescopic rods are installed in the two receiving chambers. An extrusion claw is installed on the telescopic rod, and the extrusion claw is connected to the receiving chamber by a spring. The sliding rod, the slide plate and the extrusion claw constitute a transmission part, and a transmission ring is installed on the extrusion claw, and the transmission ring is sleeved on the oil inlet pipe. One side of the transmission ring close to the connecting flange Multiple extrusion rods are installed on the side, and an extrusion gasket is provided in the groove, and multiple through holes are opened at the bottom of the groove. The extrusion rods pass through the through holes and are connected to the extrusion gasket. When the main input pipeline transports oil, part of the oil enters the rubber sleeve through the branch pipeline, causing the rubber sleeve to expand accordingly under the action of hydraulic pressure. The expansion of the rubber sleeve is used to squeeze the sliding rod to move, so that the sliding rod moves along the fixed plate away from the limit shell, and the other end of the sliding rod squeezes the slide plate toward the oil inlet pipe. During the movement, the slide plate drives the extrusion claw to compress the spring into the receiving chamber. At this time, the extrusion claw can drive the transmission ring to move synchronously during the movement, and the transmission ring can drive the extrusion gasket to squeeze the sealing ring through the extrusion rod, so that the sealing strength can be automatically adjusted according to the change of oil pressure.

[0011] As an optimal technical solution, the slide rod forms an inclined surface with the upper portion of the slide plate, and the lower portion of the slide plate forms an inclined surface with the extrusion claw, thereby ensuring smooth transmission between the slide rod, the slide plate and the extrusion claw.

[0012] As an optimal technical solution, the lower portion of the branch pipe close to the oil inlet pipe is rectangular, and the upper portion of the branch pipe is in an inverted cone shape, so as to facilitate the concentration of the oil force into the rubber sleeve.

[0013] As a preferred technical solution, the sealing protection assembly includes a second drive motor, a second chamber, a second screw, a sliding block, a first connecting rod, a third chamber, a transmission disc, a second connecting rod, a square chute, a baffle, a first pin shaft, and a second pin shaft; The main body is symmetrically provided with two second chambers on one side near the input end of the oil outlet pipe, and a second screw is rotatably installed in the second chamber. Two second drive motors are symmetrically installed on the side of the main body near the oil outlet pipe, and the output ends of the second drive motor are respectively connected to the second screw. A sliding block is slidably installed on the second screw. A third chamber is opened on the side of the bottom of the second chamber near the branch pipe, and a transmission disc is rotatably installed in the third chamber. The transmission disc is symmetrically rotatably installed with a first pin and a second pin, and the first pin is connected to the sliding block through a first connecting rod. The third chamber is connected to the branch pipe through a square slide, and a baffle is slidably installed in the square slide, and the baffle is connected to the second pin through a second connecting rod. When the pressure detector detects that the oil pressure in the oil inlet pipe exceeds the standard When the oil pressure in the oil inlet pipe is appropriate, the second drive motor drives the second screw to rotate by receiving the signal from the pressure detector, so that the sliding block moves toward the direction close to the second drive motor, so that the first connecting rod connected to the sliding block drives the transmission disc to rotate, and the transmission disc drives the baffle to move in the square slide groove through the second connecting rod during the rotation, which is conducive to the baffle sealing the branch pipeline, avoiding the impact of the blowout to damage the rubber sleeve and the limit shell, and plays a role in protecting the sealing adjustment component. When the pressure detector detects that the oil pressure in the oil inlet pipe is appropriate, the second drive motor drives the second screw to rotate by receiving the signal from the pressure detector, so that the sliding block moves away from the second drive motor, so that the first connecting rod connected to the sliding block drives the transmission disc to rotate, so that the second connecting rod moves to drive the baffle to move out of the branch pipeline, thereby opening the branch pipeline.

[0014] As an optimal technical solution, one end of the first connecting rod is hinged to the sliding block, and the other end is provided with a first connecting hole. The first pin shaft passes through the first connecting hole and is rotatably fitted. One end of the second connecting rod is hinged to the baffle, and the other end is also provided with a second connecting hole. The second pin shaft passes through the second connecting hole and is rotatably fitted. This can avoid interlocking of the transmission parts composed of the sliding block, the first connecting rod and the transmission disc, and can also avoid interlocking between the transmission disc, the second connecting rod and the baffle, thereby ensuring the transmission effect of the first connecting rod and the second connecting rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the first drive motor drives the first screw by receiving the signal from the pressure detector, the first screw rotates to drive the upper and lower fixed blocks to move up and down. Since the upper and lower fixed blocks are located on the upper and lower sides of the blocking block, the upper and lower fixed blocks can drive the blocking block to move up and down. When the blocking block moves down, it can block the passage of oil and complete the blocking. When the blocking block moves up, the oil can pass through the oil through hole, thereby completing rapid blocking and releasing, and achieving the effect of preventing blowouts.

[0016] 2. By utilizing the corresponding expansion of the rubber sleeve under hydraulic pressure, the transmission parts formed by the sliding rod, the slide plate and the extrusion claws can drive the extrusion gasket to squeeze the sealing ring accordingly, so that the sealing strength can be automatically adjusted according to the change of oil pressure.

[0017] 3. When the second drive motor drives the second screw to rotate by receiving the signal from the pressure detector, the sliding block can move laterally on the second screw, so that the first connecting rod connected to the sliding block drives the transmission disc to rotate, and the transmission disc drives the baffle to move in the square slide groove through the second connecting rod during the rotation process, which is conducive to the baffle to block or open the branch pipeline, avoid the impact of blowout to damage the rubber sleeve and the limit shell, and play a role in protecting the sealing adjustment component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective; Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention; Figure 3 It is a schematic diagram of the first cross-sectional structure of the present invention; Figure 4 It is a second cross-sectional structural schematic diagram of the present invention; Figure 5 It is a third cross-sectional structural schematic diagram of the present invention; Figure 6 for Figure 2 A schematic diagram of the enlarged structure at point A; Figure 7 for Figure 5 A schematic diagram of the enlarged structure at point B; Figure 8 for Figure 5 Enlarged structural diagram at C.

[0019] In the figure: 1. Main body; 2. Oil inlet pipe; 3. Flange; 301. Connecting flange; 302. Fixed flange; 303. Raised ring; 304. Ring groove; 4. Pressure detector; 5. Oil outlet pipe; 6. First chamber; 7. First drive motor; 8. First screw; 9. Blocking block; 10. Oil through hole; 11. Upper fixing block; 12. Lower fixing block; 13. Pin hole; 14. Telescopic cylinder; 15. Fixing pin; 16. Sealing adjustment assembly; 1601. Branch pipe; 1602. Rubber sleeve; 1603. Sliding rod; 1604. Limiting shell; 1605. Fixing plate; 1606. Perforation; 1607. Sliding plate; 1608. Storage chamber; 1609. Spring; 1610. Telescopic rod; 1611. Extrusion claw; 1612. Transmission ring; 1613. Extrusion rod; 1614. Through hole; 1615. Extrusion gasket; 1616. Sealing ring; 17. Sealing protection assembly; 1701. Second drive motor; 1702. Second chamber; 1703. Second screw; 1704. Sliding block; 1705. First connecting rod; 1706. Third chamber; 1707. Drive disc; 1708. Second connecting rod; 1709. Square slide; 1710. Baffle; 1711. First pin; 1712. Second pin. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: Figure 1-Figure 5As shown, the present invention provides a technical solution for a well-killing manifold with a blowout prevention function, the well-killing manifold with a blowout prevention function includes a main body 1, the input end of the main body 1 is connected to an oil inlet pipe 2 through a flange 3, the oil inlet pipe 2 is installed with a pressure detector 4, the output end of the main body 1 is connected to an oil outlet pipe 5, a first chamber 6 is provided in the main body 1, two first drive motors 7 are symmetrically installed at the bottom of the main body 1, two first screws 8 are symmetrically rotated in the first chamber 6, the output ends of the two first drive motors 7 are respectively connected to the bottoms of the two first screws 8, a blocking block 9 is slidably installed in the first chamber 6, an oil through hole 10 is opened on the blocking block 9, an upper fixed block 11 and a lower fixed block 12 are slidably installed on the two first screws 8, the upper fixed block 11 is in contact with the upper surface of the blocking block 9, and the lower fixed block 12 is in contact with the lower surface of the blocking block 9. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 exceeds the standard, the first drive motor 7 drives the first screw 8 to rotate by receiving the signal from the pressure detector 4, so that the upper fixed block 11 and the lower fixed block 12 drive the blocking block 9 to move downward, so that the blocking block 9 blocks the passage of oil and completes the blocking. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 is appropriate, the first drive motor 7 drives the first screw 8 to rotate by receiving the signal from the pressure detector 4, so that the upper fixed block 11 and the lower fixed block 12 drive the blocking block 9 to move upward, completing the resetting of the blocking block 9, so that oil can pass through the oil through-hole 10, thereby completing rapid blocking and releasing, and achieving the effect of preventing blowout; A pin hole 13 is provided on the lower part of one side of the main body near the oil outlet pipe, and a telescopic cylinder 14 is installed at the outer end of the circular groove. A fixed pin 15 is installed on the output shaft of the telescopic cylinder 14, and the fixed pin 15 passes through the pin hole 13. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 exceeds the standard, the telescopic cylinder 14 receives the signal of the pressure detector 4 and drives the fixed pin 15 to move in the direction away from the telescopic cylinder 14, so that the fixed pin 15 is inserted into the oil through hole 10 on the blocking block 9 for fixing, thereby achieving the function of enhancing the anti-blowout strength. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 is appropriate, the telescopic cylinder 14 receives the signal of the pressure detector 4 and drives the fixed pin 15 to move in the direction close to the telescopic cylinder 14, completing the reset, so that the fixed pin 15 exits the oil through hole 10 on the blocking block 9 and is released; A limit switch is installed at the bottom of the first chamber 6, and the limit switch is electrically connected to the first drive motor 7. When the first drive motor 7 drives the first screw 8 to rotate by receiving the signal from the pressure detector 4, the upper fixed block 11 and the lower fixed block 12 drive the blocking block 9 to move to the bottom of the first chamber 6, the limit switch is triggered, the power supply of the first drive motor 7 is cut off, and the blocking block 9 stops at the specified position, achieving the effect of precise positioning.

[0022] A fixing flange 302 is installed on the input end of the main body 1, and a connecting flange 301 is installed at the end of the oil inlet pipe 4. The connecting flange 301 and the fixing flange 302 are connected and locked by bolts. A convex ring 303 is installed on the fixing flange 302. An annular groove 304 is formed on the connecting flange 301. A sealing ring 1616 is sleeved in the annular groove 304. The convex ring 303 is inserted into the annular groove 304. By connecting the connecting flange 301 and the fixing flange 302, the convex ring 303 is embedded in the annular groove 304, which facilitates the convex ring 303 to squeeze the sealing ring 1616, thereby achieving a sealing effect. The main body 1 is provided with a sealing adjustment component 16 and a sealing protection component 17; like Figure 1-Figure 2 and Figure 4-Figure 8 As shown, the sealing adjustment assembly 16 includes a branch pipe 1601, a rubber sleeve 1602, a sliding rod 1603, a limiting shell 1604, a fixing plate 1605, a through hole 1606, a slide plate 1607, a storage chamber 1608, a spring 1609, a telescopic rod 1610, an extrusion claw 1611, a transmission ring 1612, an extrusion rod 1613, a through hole 1614, an extrusion washer 1615 and a sealing ring 1616; Two branch pipes 1601 are symmetrically provided in the input pipe of the main body 1. A rubber sleeve 1602 and a limit shell 1604 are installed at the end of the branch pipe 1601 away from the input pipe. A fixing plate 1605 is installed on the side of the main body 1 close to the branch pipe 1601. A slide rod 1603 is slidably installed on the fixing plate 1605. A through hole 1606 is provided on the limit shell 1604. The slide rod 1603 passes through the through hole 1606 and is in a sliding fit. A slide plate 1607 is symmetrically slidably installed on the side of the main body 1 close to the oil inlet pipe 2. One side of the pipe 2 is symmetrically provided with two receiving chambers 1608, and the two receiving chambers 1608 are equipped with telescopic rods 1610, and the telescopic rods 1610 are equipped with extrusion claws 1611. The extrusion claws 1611 are connected to the receiving chambers 1608 through springs 1609. The sliding rod 1603, the slide plate 1607 and the extrusion claws 1611 constitute a transmission member. The extrusion claws 1611 are equipped with a transmission ring 1612, which is sleeved on the oil inlet pipe 2. The transmission ring 1612 is equipped with multiple extrusions on the side close to the connecting flange 301. Rod 1613, groove 304 is provided with an extrusion ring 1615, and the bottom of the groove 304 is provided with a plurality of through holes 1614, the extrusion rod 1613 passes through the through holes 1614 and is connected to the extrusion ring 1615. When the main input pipeline transports oil, part of the oil enters the rubber sleeve 1602 through the branch pipe 1601, causing the rubber sleeve 1602 to expand accordingly under the action of hydraulic pressure. The expansion of the rubber sleeve 1602 is used to squeeze the slide rod 1603 to move, so that the slide rod 1603 moves away from the limit shell along the fixed plate 1605. 1604, the other end of the slide bar 1603 squeezes the slide plate 1607 to move toward the oil inlet pipe 2. During the movement, the slide plate 1607 drives the squeezing claw 1611 to compress the spring 1609 and enter the receiving chamber 1608. At this time, the squeezing claw 1611 can drive the transmission ring 1612 to move synchronously during the movement. The transmission ring 1612 drives the squeezing gasket 1615 to squeeze the sealing ring 1616 through the squeezing rod 1613, thereby realizing automatic adjustment of the sealing strength according to the change of the oil pressure. The slide bar 1603 forms an inclined surface with the upper portion of the slide plate 1606 , and the lower portion of the slide plate 1606 forms an inclined surface with the extrusion claw 1613 ; like Figure 4-Figure 5 and Figure 7-Figure 8 As shown, the sealing protection assembly 17 includes a second driving motor 1701, a second chamber 1702, a second screw 1703, a sliding block 1704, a first connecting rod 1705, a third chamber 1706, a transmission disc 1707, a second connecting rod 1708, a square slide 1709, a baffle 1710, a first pin 1710 and a second pin 1710; Two second chambers 1702 are symmetrically provided on one side of the main body 1 near the input end of the oil outlet pipe. A second screw 1703 is rotatably installed in the second chamber 1702. Two second drive motors 1701 are symmetrically installed on one side of the main body 1 near the oil outlet pipe. The output ends of the second drive motors 1701 are respectively connected to the second screws 1703. A sliding block 1704 is slidably installed on the second screw 1703. A third chamber 1706 is opened on the side of the second chamber 1702 near the branch pipe 1601. A transmission is rotatably installed in the third chamber 1706. The disc 1707 is symmetrically rotated and is equipped with a first pin shaft 1711 and a second pin shaft 1712. The first pin shaft 1711 is connected to the sliding block 1704 through a first connecting rod 1705. The third chamber 1704 is connected to the branch pipe 1701 through a square chute 1709. A baffle 1710 is slidably installed in the square chute 1709. The baffle 1710 is connected to the second pin shaft 1712 through a second connecting rod 1708. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 exceeds the standard, the second drive motor 17 01 drives the second screw 1703 to rotate by receiving the signal from the pressure detector 4, so that the sliding block 1704 moves toward the second drive motor 1701, thereby allowing the first connecting rod 1705 connected to the sliding block 1704 to drive the transmission disc 1707 to rotate. During the rotation process, the transmission disc 1707 drives the baffle 1710 to move in the square slide groove 1709 through the second connecting rod 1708, which is conducive to the baffle 1710 blocking the branch pipe 1601 and preventing the blowout impact from damaging the rubber sleeve 1602 and the limit shell 160 4, plays the role of protecting the sealing adjustment component. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 is appropriate, the second drive motor 1701 drives the second screw 1703 to rotate based on the signal received from the pressure detector 4, so that the sliding block 1704 moves away from the second drive motor 1701, thereby allowing the first connecting rod 1705 connected to the sliding block 1704 to drive the transmission disc 1707 to rotate, so that the second connecting rod 1708 moves and drives the baffle 1710 to move away from the branch pipe 1601, thereby opening the branch pipe 1601; One end of the first connecting rod 1705 is hinged to the sliding block 1704, and the other end is provided with a first connecting hole. The first pin shaft 1711 passes through the first connecting hole and is rotatably matched. One end of the second connecting rod 1705 is hinged to the baffle 1710, and the other end is also provided with a second connecting hole. The second pin shaft 1712 passes through the second connecting hole and is rotatably matched. This can avoid interlocking of the transmission parts composed of the sliding block 1701, the first connecting rod 1705 and the transmission disc 1707, and can also avoid interlocking between the transmission disc 1707, the second connecting rod 1708 and the baffle 1710, thereby ensuring the transmission effect of the first connecting rod 1705 and the second connecting rod 1705.

[0023] Working principle of the present invention: When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 exceeds the standard, the first drive motor 7 drives the first screw 8 to rotate by receiving the signal from the pressure detector 4, so that the upper fixed block 11 and the lower fixed block 12 drive the blocking block 9 to move downward, so that the blocking block 9 blocks the passage of oil and completes the blocking. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 is appropriate, the first drive motor 7 drives the first screw 8 to rotate by receiving the signal from the pressure detector 4, so that the upper fixed block 11 and the lower fixed block 12 drive the blocking block 9 to move upward, completing the resetting of the blocking block 9, so that oil can pass through the oil through hole 10, thereby completing rapid blocking and releasing, and achieving the effect of preventing blowouts.

[0024] When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 exceeds the standard, the telescopic cylinder 14 receives the signal from the pressure detector 4 and drives the fixed pin 15 to move away from the telescopic cylinder 14, so that the fixed pin 15 is inserted into the oil through hole 10 on the blocking block 9 for fixing, thereby achieving the function of enhancing the anti-blowout strength. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 is appropriate, the telescopic cylinder 14 receives the signal from the pressure detector 4 and drives the fixed pin 15 to move towards the telescopic cylinder 14, completing the reset, so that the fixed pin 15 exits the oil through hole 10 on the blocking block 9 and is released.

[0025] When the main input pipeline transports oil, part of the oil enters the rubber sleeve through the branch pipeline, causing the rubber sleeve to expand accordingly under the action of hydraulic pressure. The expansion of the rubber sleeve is used to squeeze the slide rod to move, so that the slide rod moves along the fixed plate away from the limit shell, and the other end of the slide rod 1603 squeezes the slide plate 1607 to move toward the oil inlet pipe 2. During the movement, the slide plate 1607 drives the squeezing claw 1611 to compress the spring 1609 and enter the receiving chamber 1608. At this time, the squeezing claw 1611 can drive the transmission ring 1612 to move synchronously during the movement. The transmission ring 1612 can drive the squeezing gasket ring 1615 to squeeze the sealing ring 1616 through the squeezing rod 1613, so that the sealing strength can be automatically adjusted according to the change of oil pressure.

[0026] When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 exceeds the standard, the second drive motor 1701 drives the second screw 1703 to rotate by receiving the signal from the pressure detector 4, so that the sliding block 1704 moves toward the second drive motor 1701, thereby allowing the first connecting rod 1705 connected to the sliding block 1704 to drive the transmission disc 1707 to rotate, and the transmission disc 1707 drives the baffle 1710 to move in the square slide groove 1709 through the second connecting rod 1708 during the rotation process, which is conducive to the baffle 1710 blocking the branch pipe 1601 and avoiding blowout impact damage. The bad rubber sleeve 1602 and the limit shell 1604 play the role of protecting the sealing adjustment component. When the pressure detector 4 detects that the oil pressure in the oil inlet pipe 2 is appropriate, the second drive motor 1701 drives the second screw 1703 to rotate by receiving the signal from the pressure detector 4, so that the sliding block 1704 moves away from the second drive motor 1701, thereby allowing the first connecting rod 1705 connected to the sliding block 1704 to drive the transmission disc 1707 to rotate, so that the second connecting rod 1708 moves to drive the baffle 1710 to move away from the branch pipe 1601, thereby opening the branch pipe 1601.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A well-killing manifold with blowout prevention function, characterized by: The well-killing manifold with a blowout prevention function comprises a main body (1), an input end of the main body (1) is connected to an oil inlet pipe (2) via a flange (3), a pressure detector (4) is installed on the oil inlet pipe (2), an output end of the main body (1) is connected to an oil outlet pipe (5), a first chamber (6) is provided in the main body (1), two first drive motors (7) are symmetrically installed at the bottom of the main body (1), two first screws (8) are symmetrically rotatably installed in the first chamber (6), the output ends of the two first drive motors (7) are respectively connected to the bottoms of the two first screws (8), a blocking block (9) is slidably installed in the first chamber (6), an oil through hole (10) is opened on the blocking block (9), an upper fixed block (11) and a lower fixed block (12) are slidably installed on the two first screws (8), the upper fixed block (11) contacts the upper surface of the blocking block (9), and the lower fixed block (12) contacts the lower surface of the blocking block (9).

2. The well-killing manifold with blowout prevention function according to claim 1, characterized in that: A pin hole (13) is provided at a lower portion of one side of the main body (1) close to the oil outlet pipe (5), a telescopic cylinder (14) is installed at an outer end of the pin hole (13), a fixed pin (15) is installed on the output shaft of the telescopic cylinder (14), and the fixed pin (15) passes through the pin hole (13).

3. A blowout prevention device body (1) according to claim 2, characterized in that: A limit switch is installed at the bottom of the first chamber (6), and the limit switch is electrically connected to the first drive motor (7).

4. The well-killing manifold with blowout prevention function according to claim 3, characterized in that: A fixed flange (302) is installed on the input end of the main body (1), and a connecting flange (301) is installed at the port of the oil inlet pipe (4). The connecting flange (301) and the fixed flange (302) are connected and locked by bolts. A convex ring (303) is installed on the fixed flange (302). A ring groove (304) is formed on the connecting flange (301). A sealing ring (1609) is sleeved in the ring groove (304), and the convex ring (303) is inserted into the ring groove (304).

5. The well-killing manifold with blowout prevention function according to claim 4, characterized in that: The main body (1) is provided with a sealing adjustment component (16) and a sealing protection component (17).

6. The well-killing manifold with blowout prevention function according to claim 5, characterized in that: The sealing adjustment assembly (16) comprises a branch pipe (1601), a rubber sleeve (1602), a sliding rod (1603), a limiting shell (1604), a fixing plate (1605), a perforation (1606), a slide plate (1607), a storage chamber (1608), a spring (1609), a telescopic rod (1610), an extrusion claw (1611), a transmission ring (1612), an extrusion rod (1613), a through hole (1614), an extrusion gasket (1615) and a sealing ring (1609); Two branch pipes (1601) are symmetrically provided in the input pipe of the main body (1), and a rubber sleeve (1602) and a limiting shell (1604) are installed at the end of the branch pipe (1601) away from the input pipe. A fixing plate (1605) is installed on the side of the main body (1) close to the branch pipe (1601), and a sliding rod (1603) is slidably installed on the fixing plate (1605). A through hole (1606) is provided on the limiting shell (1604), and the sliding rod (1603) passes through the through hole (1606) and is slidably fitted. A slide plate (1607) is symmetrically slidably provided on the side of the main body (1) close to the oil inlet pipe (2). Two storage chambers (1608) are symmetrically provided on the side of the main body (1) close to the oil inlet pipe (2), and telescopic rods are installed in the two storage chambers (1608). (1610), an extrusion claw (1611) is installed on the telescopic rod (1610), and the extrusion claw (1611) is connected to the storage chamber (1608) through a spring (1609). The sliding rod (1603), the slide plate (1606) and the extrusion claw (1611) constitute a transmission member, and a transmission ring (1612) is installed on the extrusion claw (1611), and the transmission ring (1612) is sleeved on the oil inlet pipe (2). A plurality of extrusion rods (1613) are installed on the side of the transmission ring (1612 close to the connecting flange (301), and an extrusion gasket (1615) is sleeved in the groove (304), and a plurality of through holes (1614) are opened at the bottom of the groove (304), and the extrusion rods (1613) pass through the through holes (1614) and are connected to the extrusion gasket (1615).

7. The well-killing manifold with blowout prevention function according to claim 6, characterized in that: The slide bar (1603) forms an inclined surface with the upper portion of the slide plate (1606), and the lower portion of the slide plate (1606) forms an inclined surface with the extrusion claw (1613).

8. The well-killing manifold with blowout prevention function according to claim 7, characterized in that: The lower portion of the branch pipe (1601) close to the oil inlet pipe (2) is rectangular, and the upper portion of the branch pipe (1601) is in an inverted cone shape.

9. The well-killing manifold with blowout prevention function according to claim 8, characterized in that: The sealing protection assembly (17) includes a second driving motor (1701), a second chamber (1702), a second screw (1703), a sliding block (1704), a first connecting rod (1705), a third chamber (1706), a transmission disc (1707), a second connecting rod (1708), a square chute (1709), a baffle (1710), a first pin (1711) and a second pin (1712); The main body (1) is symmetrically provided with two second chambers (1702) on one side close to the input end of the oil outlet pipe (5), and a second screw (1703) is rotatably installed in the second chamber (1702). The main body (1) is symmetrically provided with two second drive motors (1701) on one side close to the oil outlet pipe (5), and the output ends of the second drive motors (1701) are respectively connected to the second screws (1703). A sliding block (1704) is slidably installed on the second screw (1703). A third chamber (1706) is opened on the bottom of the second chamber (1702) close to the branch pipe (1601). A transmission disc (1707) is rotatably installed in the third chamber (1706), and a first pin shaft (1711) and a second pin shaft (1712) are symmetrically rotatably installed in the transmission disc (1707). The first pin shaft (1711) is connected to the sliding block (1704) through a first connecting rod (1705). The third chamber (1704) is connected to the branch pipe (1701) through a square slide groove (1709). A baffle (1710) is slidably installed in the square slide groove (1709), and the baffle (1710) is connected to the second pin shaft (1712) through a second connecting rod (1708).

10. A blowout prevention device body (1) according to claim 9, characterized in that: One end of the first connecting rod (1705) is hinged to the sliding block (1704), and the other end is provided with a first connecting hole. The first pin shaft (1711) passes through the first connecting hole and is rotatably fitted. One end of the second connecting rod (1705) is hinged to the baffle (1710), and the other end is also provided with a second connecting hole. The second pin shaft (1712) passes through the second connecting hole and is rotatably fitted.

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