Well drilling cross with high sulfur resistance and erosion resistance

Abstract

The invention discloses a well drilling cross with high sulfur resistance and erosion resistance, and relates to the technical field of well drilling tools, the well drilling cross comprises a cross body, a cavity is formed in the cross body, through holes are formed in the two ends of the cross body in the vertical direction and the two ends of the cross body in the horizontal direction, the through holes are communicated with the cavity, and first flanges are arranged at the two ends of the cross body in the horizontal direction; a first flange is arranged on the four-way main body, a second flange is arranged on the end portion of the flange short section, a wear-resistant sleeve is detachably connected to the inner wall of the flange short section and extends into the four-way main body, and the snap ring assembly is arranged on the first flange and the second flange in a sleeving mode. The second flange on the flange short section is connected with the first flange on the four-way body and is stably installed through the clamping ring assembly, the stability of the connecting position is effectively improved, the problem of looseness caused when simple bolts are adopted for installation is solved, and the reliability of the well drilling four-way joint is higher.

Description

Technical Field

[0001] The invention relates to the technical field of drilling tools, and more particularly to a highly sulfur-resistant and erosion-resistant drilling spool. Background Art

[0002] The drilling spool is a key surface well control equipment. The drilling spool includes four through holes. The top flange of the main channel is connected to the blowout preventer, the bottom flange is connected to the casing head, and the side channels are connected to the throttle manifold and the well killing manifold. In the event of a well blowout or overflow, the blowout preventer is closed and the high-pressure fluid is diverted to the throttle manifold for throttling circulation through the spool. When the drilling spool is in use, due to the strong erosion of the drilling fluid and the high downhole pressure, the drilling spool body will be severely damaged under the impact of the fluid, causing the throttle manifold to malfunction.

[0003] In the prior art, for example, the invention patent with application number CN201821074297.6 discloses a drilling spool and a well control device having the drilling spool, including a main body with a vertical flow channel, two lateral through holes arranged horizontally and symmetrically on both sides of the main body, each lateral through hole is connected to a threaded flange short section to form a bypass, and a wear-resistant sleeve is installed after boring the end of the lateral through hole of the main body and the inner wall of the threaded flange short section, the wear-resistant sleeve extends from the end of the lateral through hole to the bypass and the entire threaded flange short section, the intersection line position of the inner surface of the main body is chamfered and provided with a wear-resistant layer, and the wear-resistant layer extends to the boring position of the end of the lateral through hole. This device can prevent the erosion of the connection surface between the lateral through hole and the threaded flange short section by high-pressure fluid through the setting of the wear-resistant sleeve.

[0004] However, in actual use, the threaded flange nipple and the four-way body are installed by simple bolts. Under the impact of high-pressure fluid, there is a problem of loose connection, which affects the reliability of the drilling four-way.

[0005] Therefore, it is necessary to propose a high sulfur resistance and erosion resistance drilling spool to at least partially solve the problems existing in the prior art. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] In order to at least partially solve the above problems, the present invention provides a high sulfur and erosion resistance drilling spool, comprising:

[0008] A cross-body, wherein a cavity is disposed in the cross-body, through holes are disposed at both ends of the cross-body in the vertical direction and in the horizontal direction, the through holes are connected to the cavity, and first flanges are disposed at both ends of the cross-body in the horizontal direction;

[0009] Flange nipple, a second flange is arranged at the end of the flange nipple, a wear-resistant sleeve is detachably connected to the inner wall of the flange nipple, and the wear-resistant sleeve extends into the cross body,

[0010] The clamping ring assembly is sleeved on the first flange and the second flange.

[0011] Preferably, the hardness of the wear-resistant sleeve is greater than the hardness of the cross body.

[0012] Preferably, the clamping ring assembly comprises:

[0013] The two clamping rings are symmetrically arranged up and down and surround to form a ring structure, and the two ends of the clamping rings are connected with ear plates, and the two sides of the clamping rings surround the side surfaces of the first flange and the second flange;

[0014] A hydraulic boosting rod passes through the ear plates of two clamping rings, and the ends of the hydraulic boosting rod are locked by bolts. The length of the hydraulic boosting rod is adjustable.

[0015] Preferably, the snap ring comprises:

[0016] The support frame is concentrically arranged on the inner side of the clamping ring and connected to the side of the clamping ring. Two rows of ball holes are evenly arranged on the support frame, and the two rows of ball holes correspond to the side surfaces of the first flange and the second flange respectively;

[0017] A locking cavity, which is arranged between the inner wall of the clamping ring and the supporting frame;

[0018] The ball is installed in the ball hole, and the diameter of the ball is larger than the minimum diameter of the ball hole.

[0019] Preferably, the snap ring further comprises:

[0020] An arc plate is slidably connected to the inner wall of the locking cavity and is arranged away from the ball, and the length of the arc plate is smaller than the length of the locking cavity;

[0021] The elastic plate is connected to the inner side of the arc plate, and the inner side of the elastic plate abuts against the ball.

[0022] Preferably, a first groove and a second groove are arranged at intervals on the inner side of the elastic plate, and a transition section of the elastic plate between the first groove and the second groove is arranged in an arc shape; and the depth of the first groove is less than the depth of the second groove; when the ball is located in the first groove, the elastic plate squeezes the ball so that it abuts against the side surfaces of the first flange and the second flange; when the ball is located in the second groove, the elastic plate contacts and squeezes the ball so that it does not contact the side surfaces of the first flange and the second flange.

[0023] Preferably, a rack is connected to the outer wall of the arc-shaped plate, a gear is rotatably connected inside the retaining ring, and one end of the gear shaft is connected to the output end of the motor, and a groove for installing the rack, gear and motor is provided on the retaining ring.

[0024] Preferably, a plurality of energy consumption detection members are arranged at intervals in the elastic plate, and the energy consumption detection members are connected between the first groove and the arc-shaped plate, and the energy consumption detection members include:

[0025] A first mounting plate, the first mounting plate is connected to the inner wall of the arc-shaped plate;

[0026] A second mounting plate, the second mounting plate is connected to the first groove, and the second mounting plate is arranged in an annular shape;

[0027] Elastic columns, multiple elastic columns are evenly connected between the first mounting plate and the second mounting plate, multiple energy dissipation sheets are evenly connected to the elastic columns, and the energy dissipation sheets are vertically arranged to the elastic columns;

[0028] Elastic support rods, multiple elastic support rods are evenly arranged along the circumferential direction, and two ends of the elastic support rods are respectively connected to the center of the first mounting plate and the second mounting plate.

[0029] Preferably, a conical seat is connected to one side of the second mounting plate close to the ball, the conical seat is fitted in the first groove, and the conical seat corresponds to the first groove and the curvature of the ball.

[0030] Preferably, a plurality of pressure detection rods are evenly connected to the first mounting plate, and the detection end of the pressure detection rod extends toward the conical seat. The pressure detection rod generates a pressure signal after contacting the ball, and the controller controls the action of the hydraulic booster rod according to the detected pressure data.

[0031] Compared with the prior art, the present invention has at least the following beneficial effects:

[0032] The present invention provides a highly sulfur-resistant and erosion-resistant drilling spool, in which a flange nipple is arranged at the through hole of the spool body, and wear-resistant sleeves are installed at the flange nipple and the through hole of the spool body, which can effectively improve the sulfur-resistant and corrosion-resistant capabilities of the spool, and the wear-resistant sleeves are replaceable, which can effectively extend the service life of the spool body; the second flange on the flange nipple is connected to the first flange on the spool body and is stably installed by a clamping ring assembly, which effectively improves the stability of the connection, solves the problem of loosening during installation with simple bolts, and has higher reliability of the drilling spool.

[0033] The high sulfur and erosion resistant drilling spool described in the present invention, other advantages, objectives and features of the present invention will be partially reflected through the following description, and will also be partially understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 A schematic diagram of the cross-sectional structure of a high sulfur-resistant and erosion-resistant drilling spool of the present invention;

[0036] Figure 2 It is a structural schematic diagram of the clamping ring assembly in the present invention;

[0037] Figure 3 is a schematic cross-sectional structure diagram of the clamping ring assembly in the present invention;

[0038] Figure 4 For the present invention Figure 3 The local enlarged structure diagram at A in the middle;

[0039] Figure 5 It is a schematic cross-sectional structure diagram of the energy dissipation detection component installed in the clamping ring assembly of the present invention;

[0040] Figure 6 It is a schematic diagram of the structure of the energy consumption detection component in the present invention.

[0041] In the figure: 1. four-way body; 2. cavity; 3. first flange; 4. flange short section; 5. second flange; 6. wear-resistant sleeve; 11. snap ring; 12. ear plate; 13. hydraulic booster rod; 15. support frame; 16. ball hole; 17. locking cavity; 18. ball; 19. arc plate; 21. elastic plate; 22. first groove; 23. second groove; 24. rack; 25. gear; 26. groove; 30. energy-consuming detection part; 31. first mounting plate; 32. second mounting plate; 33. elastic column; 34. energy-consuming sheet; 35. elastic support rod; 36. conical seat; 37. pressure detection rod. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0043] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0044] Embodiment 1:

[0045] like Figure 1-4 As shown, the present invention provides a high sulfur and erosion resistance drilling spool, comprising:

[0046] A cross body 1, a cavity 2 is arranged in the cross body 1, through holes are arranged at both ends of the cross body 1 in the vertical direction and in the horizontal direction, the through holes are connected with the cavity 2, and first flanges 3 are arranged at both ends of the cross body 1 in the horizontal direction;

[0047] The flange nipple 4 has a second flange 5 at its end, and a wear-resistant sleeve 6 is detachably connected to the inner wall of the flange nipple 4, and the wear-resistant sleeve 6 extends into the cross body 1.

[0048] The clamping ring assembly is sleeved on the first flange 3 and the second flange 5 .

[0049] The hardness of the wear-resistant sleeve 6 is greater than the hardness of the cross body 1 .

[0050] The working principle and beneficial effects of the above technical solution are:

[0051] The present invention provides a highly sulfur-resistant and erosion-resistant drilling spool. The spool body 1 is provided with two through holes at both ends in the vertical direction and two through holes at both ends in the horizontal direction, and both through holes are connected with the cavity 2 of the spool body 1 to realize the function of the spool. Flange short sections 4 are provided at both ends in the horizontal direction of the spool body 1, and a wear-resistant sleeve 6 is installed from one end of the flange short section 4 close to the spool body 1, and one end of the wear-resistant sleeve 6 is clamped with the inner wall of the flange short section 4, and the other end extends into the spool body 1 and is clamped with the inner wall thereof. After installation, the first flange 3 and the second flange 5 are aligned, and the clamping ring assembly is sleeved on the first flange 3 and the third flange 5 and fastened. The material hardness of the wear-resistant sleeve 6 is greater than that of the spool body 1, and the through holes of the spool body 1 can be strengthened to improve its sulfur resistance and erosion resistance. The flange short section 4 can be provided at any one or more through holes of the spool body 1. After the wear-resistant sleeve 6 has been used for a period of time, erosion and wear occur on the surface of the wear-resistant sleeve 6. The wear-resistant sleeve 6 can be removed from the flange nipple 4 and replaced. The end of the wear-resistant sleeve 6 away from the cross body 1 can extend out of the flange nipple 4 and extend into the pipe connected thereto.

[0052] Through the above structural design, a flange nipple 4 is provided at the through hole of the four-way body 1, and a wear-resistant sleeve 6 is installed at the flange nipple 4 and the through hole of the four-way body 1, which can effectively improve the sulfur resistance and corrosion resistance of the four-way body, and the wear-resistant sleeve 6 is replaceable, which can effectively extend the service life of the four-way body 1; the second flange 5 on the flange nipple 4 is connected to the first flange 3 on the four-way body 1, and is stably installed through a clamping ring assembly, which effectively improves the stability of the connection, solves the problem of loosening when using simple bolts for installation, and has higher reliability of the drilling four-way.

[0053] Embodiment 2:

[0054] like Figure 1-4 As shown, based on the above embodiment 1, the clamping ring assembly includes:

[0055] A clamping ring 11, wherein two clamping rings 11 are symmetrically arranged up and down and surround to form an annular structure, and ear plates 12 are connected to both ends of the clamping ring 11, and both sides of the clamping ring 11 surround the side surfaces of the first flange 3 and the second flange 5;

[0056] The hydraulic boosting rod 13 passes through the ear plates 12 of the two clamping rings 11, and the ends of the hydraulic boosting rod 13 are locked by bolts. The length of the hydraulic boosting rod 13 is adjustable.

[0057] The working principle and beneficial effects of the above technical solution are:

[0058] The clamping ring assembly includes two clamping rings 11 arranged in combination, the clamping rings 11 surround the first flange 3 and the second flange 5, and fix the edges of the first flange 3 and the second flange 5; the ear plates 12 of the two clamping rings 11 are aligned, and the ear plates 12 are provided with through holes, one end of the hydraulic boosting rod 13 is installed on one of the ear plates 12, and the other end passes through the through hole and is tightened on the other ear plate 12 by bolts to lock and fix the two ear plates 12; the hydraulic boosting rod 13 is connected to the controller, and when a loosening trend occurs, the controller starts the hydraulic boosting rod 13 to contract and re-tighten the two clamping rings 11. Through the setting of the clamping ring 11, the flange on the four-way body 1 and the flange short section 4 can be stably connected, and the setting of the hydraulic boosting rod 13 can re-tighten the clamping ring 11 when the connection is loose, so as to maintain the connection stability of the flange short section 4.

[0059] Embodiment 3:

[0060] like Figure 1-4 As shown, based on the above-mentioned embodiment 2, the snap ring 11 includes:

[0061] The support frame 15 is concentrically arranged inside the snap ring 11 and connected to the side of the snap ring 11. Two rows of ball holes 16 are evenly arranged on the support frame 15. The two rows of ball holes 16 correspond to the side surfaces of the first flange 3 and the second flange 5 respectively.

[0062] A locking cavity 17, which is disposed between the inner wall of the clamping ring 11 and the support frame 15;

[0063] The ball 18 is installed in the ball hole 16, and the diameter of the ball 18 is larger than the minimum diameter of the ball hole 16;

[0064] An arc plate 19, the arc plate 19 is slidably connected to the inner wall of the locking cavity 17 and is arranged away from the ball 18, and the length of the arc plate 19 is less than the length of the locking cavity 17;

[0065] The elastic plate 21 is connected to the inner side of the arc plate 19 , and the inner side of the elastic plate 21 abuts against the ball 18 .

[0066] The working principle and beneficial effects of the above technical solution are:

[0067] A support frame 15 is provided on the inner side of the retaining ring 11, and two rows of ball holes 16 are provided on the support frame 15. The ball holes 16 are used to install and limit the balls 18. The balls 18 are installed on the side of the ball holes 16 close to the locking cavity 17. Since the diameter of the balls 18 is larger than the maximum diameter of the ball holes 16, the balls 18 can move on the side of the ball holes 16 close to the locking cavity 17. An arc plate 19 is arranged in the locking cavity 17. The arc plate 19 is used to fix the elastic plate 21. The elastic plate 21 is squeezed on the balls 18 so that the two rows of balls 18 protrude from the support frame 15 and abut against the first flange 3 and the second flange 5 at the same time. Grooves adapted to the balls 18 can also be arranged on the first flange 3 and the second flange 5, thereby achieving stable installation of the first flange 3 and the second flange 5. The arrangement of the elastic plate 21, on the one hand, increases the squeezing force between the balls 18 and the flanges to maintain a stable limit position. On the other hand, the vibration of the connection is transmitted to the elastic plate 21, which plays a vibration reduction role after elastic energy absorption, thereby improving the erosion resistance of the drilling spool.

[0068] Embodiment 4:

[0069] like Figure 1-4 As shown, on the basis of the above-mentioned embodiment 3, a first groove 22 and a second groove 23 are arranged at intervals on the inner side of the elastic plate 21, and a transition section of the elastic plate 21 between the first groove 22 and the second groove 23 is arranged in an arc shape; and the depth of the first groove 22 is less than the depth of the second groove 23; when the ball 18 is located in the first groove 22, the elastic plate 21 squeezes the ball 18 so that it abuts against the side surfaces of the first flange 3 and the second flange 5; when the ball 18 is located in the second groove 23, the elastic plate 21 contacts and squeezes the ball 18 so that it does not contact the side surfaces of the first flange 3 and the second flange 5.

[0070] The working principle and beneficial effects of the above technical solution are:

[0071] A first groove 22 and a second groove 23 are provided in the elastic plate 21; when the snap ring 11 is installed with the flange, the ball 18 is located in the second groove 23, and the ball 18 can move in the space between the second groove 23 and the ball hole 16, and the ball 18 does not contact the first flange 3 and the second flange; when the snap ring 11 is locked with the flange, the elastic plate 21 moves to move the first groove 23 to the position of the second groove 23, and the transition section of the elastic plate 21 between the first groove 22 and the second groove 23 is set to an arc shape, which is convenient for the flexible movement of the elastic plate 21 and prevents it from getting stuck; because the depth of the first groove 22 is less than the depth of the second groove 23, the ball 18 cooperates with the first groove 22, and under the extrusion of the elastic plate 21, it is tightly attached to the ball hole 16, and protrudes from the ball hole 16 to abut against the first flange 3 and the second flange 5, so that the snap ring 11 is locked with the flange; after locking, a gap is provided between the support frame 15 and the flange except for the ball 18, which has the effect of isolating vibration and further improves the erosion resistance of the connection.

[0072] Embodiment 5:

[0073] like Figure 1-4 As shown, on the basis of the above-mentioned embodiment 4, the outer wall of the arc plate 19 is connected to a rack 24, a gear 25 is rotatably connected inside the retaining ring 11, and one end of the rotating shaft of the gear 25 is connected to the output end of the motor, and a groove 26 for installing the rack 24, the gear 25 and the motor is provided on the retaining ring 11.

[0074] The working principle and beneficial effects of the above technical solution are:

[0075] When the snap ring 11 needs to be locked with the flange, the motor is started to rotate forward, driving the gear 25 to rotate forward, the gear 25 is meshed with the rack 24 for transmission, driving the arc plate 19 to slide forward along the locking cavity 17, and then driving the elastic plate 21 to move forward, so that the first groove 22 moves to the position of the original second groove 23 and is pressed on the ball 18; when the snap ring 11 needs to be removed from the flange, the motor is started to rotate reversely, driving the gear 25 to rotate reversely, the gear 25 is meshed with the rack 24 for transmission, driving the arc plate 19 to slide reversely along the locking cavity 17, and then driving the elastic plate 21 to move reversely, so that the first groove 22 is reset, the ball 18 returns to the second groove 23, and the flange is unlocked. Through the above structural design, the arc plate 19 and the elastic plate 21 can be driven, the contact state of the ball 18 with the first groove 22 and the second groove 23 can be switched, and the flange can be quickly locked and unlocked.

[0076] Embodiment 6:

[0077] like Figure 5 , 6As shown, on the basis of the above-mentioned embodiment 5, a plurality of energy consumption detection members 30 are arranged at intervals in the elastic plate 21, and the energy consumption detection members are connected between the first groove 22 and the arc plate 19, and the energy consumption detection members include:

[0078] A first mounting plate 31, the first mounting plate 31 is connected to the inner wall of the arc plate 19;

[0079] A second mounting plate 32, the second mounting plate 32 is connected to the first groove 22, and the second mounting plate 32 is arranged in an annular shape;

[0080] Elastic columns 33, multiple elastic columns 33 are evenly connected between the first mounting plate 31 and the second mounting plate 32, multiple energy dissipation sheets 34 are evenly connected to the elastic columns 33, and the energy dissipation sheets 34 are vertically arranged with the elastic columns 33;

[0081] The elastic support rods 35 are evenly arranged along the circumferential direction, and two ends of the elastic support rods 35 are respectively connected to the center of the first mounting plate 31 and the second mounting plate 32 .

[0082] The working principle and beneficial effects of the above technical solution are:

[0083] The energy dissipation detection part 30 is supported and arranged between the first groove 22 and the arc plate 19, wherein the first mounting plate 31 is connected to the arc plate 19, the second mounting plate 32 is connected to the first groove 22, and the elastic column 33 is supported between the first mounting plate 31 and the second mounting plate 32 to provide support between the first mounting plate 31 and the second mounting plate 32, and the stiffness of the elastic column 33 is greater than the stiffness of the elastic plate 21, thereby improving the longitudinal stiffness of the energy dissipation detection part 30; the elastic support rod 35 is arranged obliquely and connects the first mounting plate 31 and the second mounting plate 32 to improve the lateral stiffness of the energy dissipation detection part 30; a plurality of energy dissipation sheets 34 are evenly arranged to provide a dissipation path for the transmitted vibration. Through the above structural design, while ensuring the elasticity of the elastic plate 21, the local stiffness at the first groove 22 is improved; when the ball 18 is located in the first groove 22, it can be crimped on the flange more stably, and when the four-way body 1 is eroded and vibrated, the energy dissipation detection part 30 is not easy to deform, and the connection stability is better.

[0084] Embodiment 7:

[0085] like Figure 5 , 6 As shown, based on the above-mentioned embodiment 6, a conical seat 36 is connected to the side of the second mounting plate 32 close to the ball 18, and the conical seat 36 is closely connected to the first groove 22, and the conical seat 36 corresponds to the arc of the first groove 22 and the ball 18.

[0086] The working principle and beneficial effects of the above technical solution are:

[0087] A conical seat 36 is provided on the second mounting plate 32 . The conical seat 36 is connected to the first groove 22 and adapted to the curvature thereof. The conical seat 36 can move with the elastic plate 21 when it moves, so that the ball 18 can enter the conical seat 36 easily.

[0088] Embodiment 8:

[0089] like Figure 5 , 6 As shown, based on the above-mentioned embodiment 7, a plurality of pressure detection rods 37 are evenly connected to the first mounting plate 31, and the detection end of the pressure detection rod 37 extends toward the conical seat 36. The pressure detection rod 37 generates a pressure signal after contacting the ball 18, and the controller controls the action of the hydraulic booster rod 13 according to the detected pressure data.

[0090] The working principle and beneficial effects of the above technical solution are:

[0091] A pressure detection rod 37 is provided on the first mounting plate 31. When the four-way body 1 and the flange short section 4 are eroded and vibrated, the ball 18 and the flange will shake and deviate. When the ball 18 is stably installed, the detection end of the pressure detection rod 37 does not contact the ball 18; when the ball 18 and the flange are installed offset, part of the ball 18 contacts the end of the pressure detection rod 37 after being compressed. When the pressure value detected by the pressure detection rod 37 exceeds the preset range, it indicates that the ball 18 is biased in this direction, and there is a risk of separation on the opposite side, that is, the connection between the clamp ring 11 and the flange has a tendency to become unstable; at this time, the controller starts the hydraulic boosting rod 13 to shrink it, tightens the two clamp rings 11 again, reduces or eliminates the instability of the connection, and provides a basis for the boosting node of the hydraulic boosting rod 13.

[0092] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0093] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A high sulfur and erosion resistance drilling spool, characterized in that: include: A four-way body (1), a cavity (2) is arranged in the four-way body (1), through holes are arranged at both ends of the four-way body (1) in the vertical direction and in the horizontal direction, the through holes are connected to the cavity (2), and first flanges (3) are arranged at both ends of the four-way body (1) in the horizontal direction; A flange nipple (4), wherein a second flange (5) is disposed at the end of the flange nipple (4), a wear-resistant sleeve (6) is detachably connected to the inner wall of the flange nipple (4), and the wear-resistant sleeve (6) extends into the cross body (1), The clamping ring assembly is sleeved on the first flange (3) and the second flange (5).

2. The high sulfur and erosion resistance drilling spool according to claim 1, characterized in that: The hardness of the wear-resistant sleeve (6) is greater than the hardness of the cross body (1).

3. The high sulfur and erosion resistance drilling spool according to claim 1, characterized in that: The snap ring assembly includes: A clamping ring (11), wherein the two clamping rings (11) are symmetrically arranged up and down and surround each other to form an annular structure, and ear plates (12) are connected to both ends of the clamping ring (11), and both sides of the clamping ring (11) surround the side surfaces of the first flange (3) and the second flange (5); A hydraulic boosting rod (13) passes through the ear plates (12) of the two clamping rings (11), and the ends of the hydraulic boosting rod (13) are locked by bolts. The length of the hydraulic boosting rod (13) is adjustable.

4. The high sulfur and erosion resistance drilling spool according to claim 3, characterized in that: The clamping ring (11) comprises: A support frame (15), the support frame (15) is concentrically arranged on the inner side of the snap ring (11) and connected to the side of the snap ring (11), and two rows of ball holes (16) are evenly arranged on the support frame (15), and the two rows of ball holes (16) correspond to the side of the first flange (3) and the side of the second flange (5) respectively; A locking cavity (17), the locking cavity (17) being arranged between the inner wall of the clamping ring (11) and the supporting frame (15); The ball (18) is installed in the ball hole (16), and the diameter of the ball (18) is greater than the minimum diameter of the ball hole (16).

5. The high sulfur and erosion resistance drilling spool according to claim 4, characterized in that: The clamping ring (11) also includes: An arc plate (19), the arc plate (19) is slidably connected to the inner wall of the locking cavity (17) and is arranged away from the ball (18), and the length of the arc plate (19) is less than the length of the locking cavity (17); The elastic plate (21) is connected to the inner side of the arc plate (19), and the inner side of the elastic plate (21) abuts against the ball (18).

6. The high sulfur and erosion resistance drilling spool according to claim 5, characterized in that: A first groove (22) and a second groove (23) are arranged at intervals inside the elastic plate (21); a transition section of the elastic plate (21) between the first groove (22) and the second groove (23) is arranged in an arc shape; and the depth of the first groove (22) is smaller than the depth of the second groove (23); when the ball (18) is located in the first groove (22), the elastic plate (21) squeezes the ball (18) so that it abuts against the side surfaces of the first flange (3) and the second flange (5); when the ball (18) is located in the second groove (23), the elastic plate (21) contacts and squeezes the ball (18) so that it does not contact the side surfaces of the first flange (3) and the second flange (5).

7. The high sulfur and erosion resistance drilling spool according to claim 5, characterized in that: The outer wall of the arc-shaped plate (19) is connected with a rack (24), a gear (25) is rotatably connected inside the snap ring (11), and one end of the rotating shaft of the gear (25) is connected to the output end of the motor. The snap ring (11) is provided with a groove (26) for mounting the rack (24), the gear (25) and the motor.

8. The high sulfur and erosion resistance drilling spool according to claim 6, characterized in that: A plurality of energy consumption detection members (30) are arranged at intervals in the elastic plate (21), and the energy consumption detection members are connected between the first groove (22) and the arc-shaped plate (19), and the energy consumption detection members include: A first mounting plate (31), the first mounting plate (31) being connected to the inner wall of the arc-shaped plate (19); A second mounting plate (32), the second mounting plate (32) is connected to the first groove (22), and the second mounting plate (32) is arranged in an annular shape; Elastic columns (33), a plurality of elastic columns (33) are evenly connected between the first mounting plate (31) and the second mounting plate (32), a plurality of energy dissipation sheets (34) are evenly connected to the elastic columns (33), and the energy dissipation sheets (34) are vertically arranged to the elastic columns (33); Elastic support rods (35), wherein a plurality of elastic support rods (35) are evenly arranged along the circumferential direction, and two ends of the elastic support rods (35) are respectively connected to the center of the first mounting plate (31) and the second mounting plate (32).

9. The high sulfur and erosion resistance drilling spool according to claim 8, characterized in that: A conical seat (36) is connected to one side of the second mounting plate (32) close to the ball (18). The conical seat (36) is fitted in the first groove (22), and the arc of the conical seat (36) corresponds to that of the first groove (22) and the ball (18).

10. The high sulfur and erosion resistance drilling spool according to claim 9, characterized in that: A plurality of pressure detection rods (37) are evenly connected to the first mounting plate (31), and detection ends of the pressure detection rods (37) extend toward the conical seat (36). When the pressure detection rods (37) come into contact with the ball (18), a pressure signal is generated, and a controller controls the action of the hydraulic boosting rod (13) according to the detected pressure data.

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