Anti-lag spray hole bearing sealing type security cover

Abstract

The utility model belongs to the technical field of valve bodies, and particularly relates to an anti-lagging spray hole bearing sealing type security cover which comprises a flow dividing pipe, a sleeve and a rear pipe are arranged at the two ends of the flow dividing pipe respectively, a baffle is arranged on the inner wall of the connecting position of the rear pipe and the flow dividing pipe, and a detachably-connected rear cover is arranged at the end, away from the flow dividing pipe, of the rear pipe. The rear cover and the baffle are respectively provided with a drill rod penetrating hole, two end face bearings are arranged between the baffle and the rear cover, a sealing ring is clamped between the two end face bearings, and the side face of the flow dividing pipe is connected with a flow dividing branch pipe. The drill rod can be well sealed in the rotating and swinging processes, back spraying of rock debris, gas and slurry mixtures during drilling operation is avoided, meanwhile, after the drill rod is withdrawn after operation is completed, the end face bearing and the sealing ring can be taken out by disassembling the rear cover, meanwhile, the hysteretic spraying prevention device is rapidly connected, and the convenience of hole sealing pipe lowering operation is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill rod protective covers, in particular to an anti-hysteresis spray hole bearing sealed safety cover. Background Art

[0002] During drilling operations such as oil, natural gas, geological exploration, and gas extraction drilling, the rock chips, gas, or mud mixture generated in the borehole will splash out from the hole mouth during the high-speed rotation and up and down movement of the drill pipe, posing a threat to the life safety of on-site operators.

[0003] In order to reduce the occurrence of such safety accidents, drill pipe hole protection covers came into being. Their main purpose is to form a safety barrier at the drill pipe hole to protect operators from possible injuries. Because the drill pipe not only needs to rotate during operation, but also swings up and down, existing protection covers are prone to gaps during drill pipe operation, causing mud mixture to overflow or spray at the rear end of the protection cover. At the same time, in the coal mining drilling process, it is generally necessary to lower the sealing pipe after the drilling is completed. The existing protection cover is not suitable for anti-blowout protection during the sealing pipe operation. Therefore, in order to improve the safety of drill pipe operation and sealing pipe operation, a new type of anti-lag spray hole bearing sealed safety cover is needed. Utility Model Content

[0004] In response to the above problems, the utility model proposes an anti-lag spray hole bearing sealed safety cover, which effectively solves the problem in the existing technology that the protective cover has poor sealing performance during drill pipe operation and is inconvenient to perform anti-blowout protection when lowering the sealing hole pipe.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an anti-hysteresis spray hole bearing sealed security cover, including a diversion pipe, a sleeve and a rear pipe are respectively provided at both ends of the diversion pipe, a baffle is provided on the inner wall of the connection between the rear pipe and the diversion pipe, and a detachable rear cover is provided at the end of the rear pipe away from the diversion pipe, and drill rod penetration holes are provided on the rear cover and the baffle, two end face bearings are provided between the baffle and the back cover, a sealing ring is clamped between the two end face bearings, and a diversion branch pipe is connected to the side of the diversion pipe.

[0006] Furthermore, the end face bearing includes a bottom cover, a ball groove is provided on the bottom cover, a top cover slide groove is opened on the outside of the ball groove, balls are provided in the ball groove, a top cover is buckled on the balls, and the edge of the top cover is slidably connected to the top cover slide groove.

[0007] Furthermore, the bottom covers of the two end face bearings are respectively fitted with the baffle and the rear cover, and the top covers of the two end face bearings are respectively fitted with the sealing ring.

[0008] Further, the shunt branch pipe is inclined downward from the lower part of the shunt pipe to the lower part of the rear pipe.

[0009] Further, the inner diameter of the sealing ring is smaller than the inner diameter of the end face bearing and the drilling rod through hole.

[0010] Preferably, the anti-lag jet hole bearing sealing type security cover further comprises an anti-lag device, the anti-lag device comprises an anti-lag joint, one end of the anti-lag joint is sleeved with a fixed anti-lag bag, the tail of the anti-lag bag is provided with an insertion hole, the insertion hole is provided with a mouth device, and the other end of the anti-lag joint is detachably connected with the rear pipe.

[0011] Further, one end of the anti-lag joint sleeved with the anti-lag bag is provided with an elbow, and the anti-lag joint is connected with a guide pipe, which extends from the rear pipe into the shunt pipe.

[0012] Further, the two side walls of the shunt pipe are provided with lock pin insertion rings, and the lock pin insertion rings are detachably connected with supports.

[0013] Preferably, the support comprises an adjustable support, and the adjustable support comprises two adjustable support rods, each of the adjustable support rods comprises a bolt sleeve one, the outer wall of the bolt sleeve one is connected with an adjusting screw rod, the lower end of the adjusting screw rod is provided with a fixed sleeve one, and the side wall of the fixed sleeve one is provided with a locking screw one.

[0014] Preferably, the support comprises a fixed support, and the fixed support comprises a support plate one and a support plate two, the upper parts of the support plate one and the support plate two are fixedly connected with bolt sleeves two, the lower parts of the support plate one and the support plate two are fixedly connected with fixed sleeves two, the side wall of the fixed sleeve two is provided with a locking screw two, and the support plate one and the support plate two are fixedly connected with a structure reinforcing plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The sealing ring cooperates with the end face bearing, so that the sealing ring rotates with the drilling rod in the rotating process, good sealing can be formed in the rotating and swinging process of the drilling rod, the rear spray of the mixture of rock debris, gas and mud during drilling operation is avoided, the end face bearing and the sealing ring can be taken out by detaching the rear cover after the drilling rod operation is completed and withdrawn, and the anti-lag spray device is quickly connected, so that the convenience of the lower sealing hole pipe operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model;

[0018] Figure 2 It is a sectional view of the utility model;

[0019] Figure 3 As Figure 2 Enlarged view of the structure of middle A part;

[0020] Figure 4 As end face bearing sectional view;

[0021] Figure 5 As rear pipe installation anti-back spray device sectional view;

[0022] Figure 6 As adjustable support perspective view;

[0023] Figure 7 As fixed support perspective view.

[0024] In the figure: 1, flow distribution pipe; 2, sleeve; 3, rear pipe; 4, baffle; 5, rear cover; 6, end face bearing; 61, bottom cover; 62, ball groove; 63, top cover sliding groove; 64, ball; 65, top cover; 7, sealing ring; 8, flow distribution branch pipe; 9, anti-back spray device; 91, anti-spray joint; 911, elbow; 92, anti-spray bag; 93, mouth binding device; 10, lock pin insert ring; 11, adjustable support; 111, bolt sleeve one; 112, adjusting screw; 113, fixed sleeve one; 114, locking screw one; 12, fixed support; 121, support plate one; 122, support plate two; 123, bolt sleeve two; 124, fixed sleeve two; 125, locking screw two; 126, structure reinforcing plate; 13, handle; 14, drill rod; 15, drill rod holder; 16, telescopic push rod; 17, hole sealing pipe; 18, hook; 19, buckle; 20, guide pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] As Figures 1-4As shown, a kind of anti-lag jet hole bearing seal type security cover, including shunt pipe 1, the upper portion of the shunt pipe 1 is integrally connected with handle 13, the both ends of the shunt pipe 1 are integrally connected with sleeve 2 and rear pipe 3, the inner wall of the connecting place of rear pipe 3 and shunt pipe 1 is integrally connected with baffle 4, the end of rear pipe 3 away from shunt pipe 1 is provided with rear cover 5, rear cover 5 is welded with hook 18, the outer wall of rear pipe 3 is installed with buckle 19 by screw, buckle 19 hooks hook 18 to make rear cover 5 and rear pipe 3 detachably connected, rear cover 5 and baffle 4 are all provided with drill rod through hole, two end face bearings 6 are arranged between baffle 4 and rear cover 5, end face bearing 6 includes bottom cover 61, bottom cover 61 is provided with ball groove 62, the outer side of ball groove 62 is provided with top cover sliding slot 63, ball groove 62 is provided with ball 64, ball 64 is buckled with top cover 65, the edge of top cover 65 is slidably connected with top cover sliding slot 63, baffle 4 and rear cover 5 are provided with bearing clamping groove matched with the outer diameter of end face bearing 6, end face bearing 6 is located in bearing clamping groove, at this time, the bottom cover 61 of the two end face bearings 6 is respectively attached to baffle 4 and rear cover 5, sealing ring 7 is arranged between the two end face bearings 6, to ensure the sealing effect, the number of sealing ring 7 clamped between end face bearing 6 can be multiple, the inner diameter hole of sealing ring 7 is matched with the outer diameter shape of drill rod 14, such as three-rib drill rod 14, the inner diameter hole of sealing ring 7 is triangular, the inner diameter hole of sealing ring 7 is smaller than the outer diameter of drill rod 14, at this time, the inner ring of sealing ring 7 is closely attached to drill rod 14, the top covers 65 of the two end face bearings 6 are oppositely arranged at this time, the end cover is attached to the two sides of sealing ring 7, the side of shunt pipe 1 is integrally connected with shunt branch pipe 8, shunt branch pipe 8 is connected with the inside of shunt pipe 1 to realize the drainage discharge function of the sundries generated by drilling, shunt branch pipe 8 is inclinedly arranged from the lower portion of shunt pipe 1 to the lower portion of rear pipe 3, to facilitate the discharge of sundries generated by drilling.

[0027] In the embodiment, the inner diameter of the sealing ring 7 is smaller than the inner diameter of the end face bearing 6 and the drill rod through hole.

[0028] As shown, Figure 5 In the embodiment, the anti-lag jet hole bearing seal type security cover further includes anti-back spray device 9, the anti-back spray device 9 includes anti-spray connector 91, one end of the anti-spray connector 91 is provided with a protruding edge, the anti-spray connector 91 provided with the protruding edge is sleeved with anti-spray bag 92 and is fixed by clamp, the tail of anti-spray bag 92 is provided with insertion hole, the insertion hole is used for inserting sealing tube 17, the insertion hole is provided with mouth binding device 93, the mouth binding device 93 can be clamp, binding belt and other devices capable of tightly binding the tail end of anti-spray bag 92, the other end of anti-spray connector 91 is detachably connected with rear pipe 3, the detachable connection mode can adopt the buckle 19 and hook 18 cooperation structure used by rear cover 5 and rear pipe 3.

[0029] In the embodiment, one end of the blowout preventer joint 91 sleeved with the blowout preventer bag 92 is provided with an integrally formed elbow 911. The blowout preventer joint 91 is integrally connected with a guide pipe 20 through the elbow 911. The inner diameter of the guide pipe 20 is the same as that of the elbow 911. The guide pipe 20 extends from the rear pipe 3 to the shunt pipe 1. The elbow 911 enables the hole sealing pipe 17 to be inserted from the side when the hole sealing pipe 17 is lowered. The elbow 911 and the guide pipe 20 guide the hole sealing pipe 17 in the inner diameter of the hole sealing pipe 17, which facilitates the insertion of the hole sealing pipe 17 into the drilled hole. The length of the guide pipe 20 does not exceed the position where the shunt branch pipe 8 is connected to the shunt pipe 1, so as to avoid affecting the discharge of the mud and the drill cuttings.

[0030] As shown in Figure 1 In the embodiment, the two side walls of the shunt pipe 1 are integrally formed with a lock pin insertion ring 10. The lock pin insertion ring 10 is detachably connected with a support through a lock pin.

[0031] As shown in Figure 6 In some embodiments, the support includes an adjustable support 11. The adjustable support 11 includes two adjustable support rods. The adjustable support rods each include a bolt sleeve 1 11. After the bolt sleeve 2 is flush with the lock pin insertion ring 10, the adjustable support 11 is connected with the shunt pipe 1 through a lock pin. The outer wall of the bolt sleeve 1 11 is welded with an adjusting screw 112. The lower end of the adjusting screw 112 is provided with a fixed sleeve 1 13. The side wall of the fixed sleeve 1 13 is provided with a locking screw 1 14. In use, the length of the adjusting screw 112 is adjusted. Then, the two fixed sleeves 1 13 are sleeved on the telescopic advancing rod 16 at the lower part of the drill pipe gripper 15, and the telescopic advancing rod 16 is fixed through the locking screw 1 14.

[0032] As shown in Figure 7 In other embodiments, the support includes a fixed support 12. The fixed support 12 includes a support plate 1 21 and a support plate 2 122. The upper parts of the support plate 1 21 and the support plate 2 122 are fixedly connected with bolt sleeves 2 123 through welding. The lower parts of the support plate 1 21 and the support plate 2 122 are fixedly connected with fixed sleeves 2 124 through welding. The side wall of the fixed sleeve 2 124 is provided with a locking screw 2 125. The support plate 1 21 and the support plate 2 122 are integrally connected with a structure reinforcing plate 126. The spacing between the bolt sleeves 2 123 is equal to the spacing of the lock pin insertion rings 10 provided on the two side walls of the shunt pipe 1. The spacing between the fixed sleeves 2 124 is equal to the spacing of the telescopic advancing rods 16 at the lower part of the drill pipe gripper 15. Since the support plate 1 21 and the support plate 2 122 are fixed structures, the structure is more firm and stable.

[0033] When the present invention is working, the adjustable bracket 11 or the fixed bracket 12 is selected and the present invention is installed on the telescopic propulsion rod 16. At this time, the drill rod 14 of the drilling rig passes through the sealing ring 7, the baffle 4, and the shunt pipe 1 in sequence from the drill rod penetration hole of the rear cover 5 until it passes through the casing 2. The casing 2 is inserted into the drill hole. When the drill bit is drilling, the drill rod 14 drives the sealing ring 7 to rotate, so that a good seal can be formed during the rotation of the drill rod 14. The debris discharged from the drill hole is isolated by the baffle 4 and the sealing ring 7 and all passes through the shunt branch pipe. 8 flows out downward, and the branch pipe 8 can be connected to the collection cylinder through a pipeline to collect the drill cuttings. At the same time, when the sealing pipe 17 needs to be installed after the drilling is completed, after the drill bit of the drilling rig is withdrawn, the rear cover 5 is separated from the rear pipe 3 by disassembling the connected buckle 19 and hook 18, and the end bearing 6 and the sealing ring 7 are taken out. The blowout preventer joint 91 is fixed to the rear pipe 3 through the buckle 19 and the hook 18, and the sealing pipe 17 is inserted through the insertion hole at the tail end of the blowout preventer bag 92, and the tail end of the blowout preventer bag 92 is fastened to the sealing pipe 17 through the binding device 93 to complete the sealing work.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-hysteresis spray hole bearing sealed safety cover, characterized by: It includes a shunt pipe, and both ends of the shunt pipe are respectively provided with a sleeve and a rear pipe, a baffle is provided on the inner wall of the connection between the rear pipe and the shunt pipe, and a detachable rear cover is provided at the end of the rear pipe away from the shunt pipe, and drill rod penetration holes are provided on the rear cover and the baffle, two end face bearings are provided between the baffle and the rear cover, and a sealing ring is clamped between the two end face bearings, and a shunt branch pipe is connected to the side of the shunt pipe.

2. The anti-hysteresis spray hole bearing sealed safety cover according to claim 1, characterized in that: The end face bearing includes a bottom cover, a ball groove is provided on the bottom cover, a top cover slide groove is opened on the outside of the ball groove, balls are provided in the ball groove, a top cover is buckled on the balls, and the edge of the top cover is slidably connected to the top cover slide groove.

3. The anti-hysteresis spray hole bearing sealed safety cover according to claim 2, characterized in that: The bottom covers of the two end face bearings are respectively fitted with the baffle and the rear cover, and the top covers of the two end face bearings are respectively fitted with the sealing ring.

4. The anti-hysteresis spray hole bearing sealed safety cover according to claim 1, characterized in that: The branch pipe is inclined from the lower part of the branch pipe to the lower part of the rear pipe.

5. The anti-hysteresis spray hole bearing sealed safety cover according to claim 1, characterized in that: The inner diameter of the sealing ring is smaller than the inner diameter of the end bearing and the drill rod penetration hole.

6. The anti-hysteresis spray hole bearing sealed safety cover according to claim 1, characterized in that: The anti-delayed spray hole bearing sealed safety cover also includes an anti-afterspray device, which includes an anti-afterspray joint. A anti-spray bag is fixed on one end of the anti-spray joint. An insertion hole is opened at the tail of the anti-spray bag. A restraining device is provided at the insertion hole. The other end of the anti-spray joint is detachably connected to the rear pipe.

7. The anti-hysteresis spray hole bearing sealed safety cover according to claim 6, characterized in that: The blowout prevention joint sleeve is provided with an elbow at one end of the blowout prevention bag, and the blowout prevention joint is connected to a guide pipe, which extends from the rear pipe to the diversion pipe.

8. The anti-hysteresis spray hole bearing sealed safety cover according to claim 1, characterized in that: Locking pin inserting rings are provided on both side walls of the shunt pipe, and the locking pin inserting rings are detachably connected to the brackets.

9. The anti-hysteresis spray hole bearing sealed safety cover according to claim 8, characterized in that: The bracket includes an adjustable bracket, and the adjustable bracket includes two adjustable support rods. The adjustable support rods each include a bolt sleeve. The outer wall of the bolt sleeve is connected to an adjusting screw. The lower end of the adjusting screw is provided with a fixed sleeve. The side wall of the fixed sleeve is provided with a locking screw.

10. The anti-hysteresis spray hole bearing sealed safety cover according to claim 8, characterized in that: The bracket includes a fixed bracket, and the fixed bracket includes support plate 1 and support plate 2. The upper parts of support plate 1 and support plate 2 are fixedly connected with bolt sleeve 2, and the lower parts of support plate 1 and support plate 2 are fixedly connected with fixed sleeve 2. The side wall of fixed sleeve 2 is provided with locking screw 2, and a structural reinforcement plate is fixedly connected between support plate 1 and support plate 2.

Images