A spray-proof box

Abstract

The present invention relates to a blowout prevention box, comprising a box body, a first lifting ring, an access assembly, an output assembly and a rubber core; a first lifting ring symmetrically distributed with respect to each other is provided on both the left and right sides of the box body; the access assembly and the output assembly are respectively arranged at the upper and lower ends of the box body, and the rubber core is arranged inside the box body; the present invention opens a first window on both the front and rear sides of the box body, and realizes the rapid removal and replacement of two suction rubbers by means of two detachable rubber seat pressure covers, which is simple to operate, saves time and effort, and saves costs; in addition, the present invention arranges two pulleys to cooperate with the steel wire rope, so as to avoid the blowout prevention box from tilting when the steel wire rope is pulled and greatly reduce the wear degree of the rubber core.

Description

Technical Field

[0001] The invention relates to a spray-proof box. Background Art

[0002] The blowout preventer is a tool used to prevent the drilling fluid in the raised drill pipe column from overflowing and contaminating the drilling platform when the joint threads are removed during drilling. Since the traction wire rope is inserted through the rubber core in the blowout preventer and slides frequently in the rubber core, the rubber core wears out quickly and needs to be replaced frequently. However, the existing blowout preventer must first remove the access component, and then take out the rubber core from the top of the box body and replace it, which is troublesome, time-consuming and labor-intensive. Moreover, the replacement of the rubber core is an overall replacement, which is costly. In addition, the existing blowout preventer is only provided with one pulley to cooperate with the wire rope. When the wire rope is pulled, the blowout preventer will be skewed and the wear of the rubber core will be aggravated, which needs to be further improved. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a blowout preventer box that can simply and quickly remove and replace the rubber core, which saves time and effort, saves costs, and can avoid skewing when pulling the wire rope and greatly reduce the degree of wear.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a blowout prevention box, including a box body, a first hanging ring, an access component, an output component and a rubber core; a first hanging ring symmetrically distributed is provided on the left and right sides of the box body; the access component and the output component are respectively arranged at the upper and lower ends of the box body, and the rubber core is arranged inside the box body, characterized in that the rubber core includes a suction rubber, a rubber seat, a rubber seat pressure cover, a roller pressure cover, a second hanging ring, a pulley and a pulley shaft; a transversely distributed partition is provided inside the box body, and a wire passing hole is provided in the partition; a first window symmetrically distributed is provided on the front and rear sides of the box body, and a second window is provided on the front side of the box body, and the two first windows are It is arranged above the partition, and the second window is arranged below the partition. A detachable rubber seat pressure cover is arranged on the front and rear sides of the box body, and a detachable rubber seat is arranged on the inner side of the two rubber seat pressure covers, and the two rubber seats are respectively inserted into the box body through the two first windows; two symmetrically distributed suction rubbers are arranged between the two rubber seats, and a second hanging ring is arranged on the upper side of the two rubber seat pressure covers, and the roller pressure cover is detachably fixed to the front side of the box body and arranged in front of the second window. The pulley shaft includes two, and the two pulley shafts are both arranged laterally and symmetrically inside the box body and are both arranged below the partition, and a rotatable pulley is sleeved on the two pulley shafts.

[0005] Preferably, a sleeve is formed outwardly on both the upper and lower sides of the box body, and a through hole is opened on both the upper and lower sides of the box body, and the two through holes are respectively arranged concentrically with the two sleeves.

[0006] Preferably, the access component includes an upper cava, a piston, a hydraulic cylinder, a conduit, a lower cava, a lower cava copper sleeve, a spring, a right-angle joint and a traction component; the lower end of the hydraulic cylinder is sleeved and fixed outside a sleeve on the upper side; the conduit is vertically arranged inside the hydraulic cylinder, the upper end of the conduit is inserted and fixed at the center of the upper end of the conduit, the lower end of the conduit is inserted and fixed with two symmetrically arranged upper cava, and two symmetrically distributed lower cava are arranged in one of the sleeves on the upper side, the lower cava copper sleeve is vertically arranged between the two lower cava, the piston is movably sleeved outside the conduit and arranged in the hydraulic cylinder, the right-angle joint is arranged on one side of the upper end of the hydraulic cylinder and is interconnected with the inside of the hydraulic cylinder, the spring is sleeved on the outside of the conduit and the two upper cava and is arranged between the piston and the two lower cava, and the traction component is arranged above the hydraulic cylinder.

[0007] Preferably, the upper end of the spring abuts against the lower end of the piston, and the lower end of the spring abuts against the upper ends of the two lower slips.

[0008] Preferably, the traction assembly includes a guide wheel box, a pin shaft, an upper pulley and a roller; the guide wheel box is fixed to the upper end of the hydraulic cylinder, and the guide wheel box is provided with two pin shafts which are transversely and symmetrically distributed left and right, and an upper pulley and a roller are respectively mounted on the two pin shafts, and the roller is arranged on the left side of the upper pulley.

[0009] Preferably, the output assembly includes a ferrule, a universal nut, a universal seat, a shear pin and a lower joint; the ferrule is sleeved and fixed on the outside of a sleeve on the lower side, the universal nut is sleeved outside the ferrule, the upper end of the universal seat is inserted and threaded inside the lower end of the universal nut and abuts against the lower end of the ferrule, and the upper end of the lower joint is sleeved on the outer side of the lower end of the universal seat and fixed by multiple shear pins.

[0010] Preferably, a step ring is formed on the outer side of the middle portion of the ferrule, and the upper side of the step ring is fitted on the upper inner wall of the universal nut.

[0011] Preferably, the upper end of the lower joint is formed with a plurality of plugs distributed at equal angles along the circumferential direction. Correspondingly, the outer side of the lower end of the universal seat is provided with a plurality of slots distributed at equal angles along the circumferential direction. The number and positions of the slots are matched with the number and positions of the plugs, and the plurality of plugs are respectively inserted into the plurality of slots.

[0012] Preferably, the number of the shear pins is the same as the number of the inserts, and the plurality of shear pins respectively pass through the plurality of inserts transversely and are respectively inserted into and screwed into the plurality of universal seats.

[0013] Preferably, a vertically distributed and mutually matching arc groove is opened on the inner side of the two rubber seats, the two suction rubbers are respectively arranged in the two arc grooves, and a vertically distributed and mutually matching arc hole is opened on the inner side of the two suction rubbers.

[0014] Compared with the prior art, the advantages of the present invention are: a first window is opened on the front and rear sides of the box body, and two detachable rubber seat covers are used to realize the rapid removal and replacement of the two suction rubbers, without removing the access components, simple operation, saving time and effort; and the two rubber seats and the two rubber seat covers can continue to be used, so the cost is saved; in addition, the present invention is provided with two pulleys to cooperate with the wire rope, so as to avoid the anti-spray box from tilting when the wire rope is pulled and greatly reduce the wear of the rubber core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the right front side structural diagram of the present invention. DETAILED DESCRIPTION

[0016] like Figure 1As shown, a blowout prevention box comprises a box body 3, a first hanging ring 27, an access assembly, an output assembly and a rubber core; a first hanging ring 27 symmetrically distributed is provided on both sides of the box body 3; the access assembly and the output assembly are respectively arranged at the upper and lower ends of the box body 3, and the rubber core is arranged inside the box body 3, and the rubber core comprises a suction rubber 10, a rubber seat 11, a rubber seat pressure cover 12, a roller pressure cover 8, a second hanging ring 30, a pulley 6 and a pulley shaft 7; a transversely distributed partition 302 is provided inside the box body 3, and a wire hole 304 is provided in the partition 302; a first window 301 symmetrically distributed is provided on both sides of the front and rear of the box body 3, a second window 303 is provided on the front side of the box body 3, and the two first windows 301 are both provided on the partition 3 02, the second window 303 is arranged below the partition 302, a detachable rubber seat pressure cover 12 is provided on the front and rear sides of the box body 3, a detachable rubber seat 11 is provided on the inner side of the two rubber seat pressure covers 12, and the two rubber seats 11 are respectively inserted into the box body 3 through the two first windows 301; two symmetrically distributed suction rubbers 10 are provided between the two rubber seats 11, and a second hanging ring 30 is provided on the upper side of the two rubber seat pressure covers 12, and the roller pressure cover 8 is detachably fixed to the front side of the box body 3 and arranged in front of the second window 303, and the pulley shaft 7 includes two, and the two pulley shafts 7 are both arranged in the box body 3 laterally and symmetrically and both are arranged below the partition 302, and the two pulley shafts 7 are sleeved with A rotatable pulley 6; the access assembly includes an upper slip 15, a piston 14, a hydraulic cylinder 13, a conduit 16, a lower slip 9, a lower slip copper sleeve 17, a spring 18, a right-angle joint 19 and a traction assembly; a sleeve 306 is formed outward on the upper and lower sides of the box body 3, and a through hole 305 is opened on the upper and lower sides of the box body 3. The two through holes 305 are respectively arranged concentrically with the two sleeves 306, and the lower end of the hydraulic cylinder 13 is sleeved and fixed outside a sleeve 306 on the upper side; the conduit 16 is vertically arranged inside the hydraulic cylinder 13, the upper end of the conduit 16 is inserted and fixed at the center of the upper end of the conduit 16, and the lower end of the conduit 16 is inserted and fixed with two symmetrically arranged upper slips 15, and two sleeves 306 are arranged in the upper sleeve 306 Symmetrically distributed lower slips 9, a lower slip copper sleeve 17 is vertically arranged between the two lower slips 9, the inner end of the lower slip copper sleeve 17 inlet channel 11 is communicated with the left inner wall of the cavity 14, the piston 14 is movably sleeved outside the guide tube 16 and arranged in the hydraulic cylinder 13, the right-angle joint 19 is arranged on one side of the upper end of the hydraulic cylinder 13 and is communicated with the inside of the hydraulic cylinder 13, the spring 18 is sleeved on the outer side of the guide tube 16 and the two upper slips 15 and is arranged between the piston 14 and the two lower slips 9, the upper end of the spring 18 abuts against the lower end of the piston 14, and the lower end of the spring 18 abuts against the upper ends of the two lower slips 9, the traction assembly is arranged above the hydraulic cylinder 13, and the traction assembly includes a guide wheel box 20, a pin shaft 21, an upper pulley 23 and a roller 24;The guide wheel box 20 is fixed to the upper end of the hydraulic cylinder 13, and two pins 21 are arranged in the guide wheel box 20 which are horizontally and symmetrically distributed. An upper pulley 23 and a roller 24 are respectively sleeved on the two pins 21, and the roller 24 is arranged on the left side of the upper pulley 23; the output assembly includes a ferrule 5, a universal nut 4, a universal seat 2, a shear pin 25 and a lower joint 1; the ferrule 5 is sleeved and fixed to the outside of a sleeve 306 on the lower side, the universal nut 4 is sleeved on the outside of the ferrule 5, the upper end of the universal seat 2 is inserted and screwed into the lower end of the universal nut 4 and abuts against the lower end of the ferrule 5, and the upper end of the lower joint 1 is sleeved on the outer side of the lower end of the universal seat 2 and fixed by a plurality of shear pins 25; a step ring 51 is formed on the outer side of the middle part of the ferrule 5, and the upper side of the step ring 51 is fitted on the upper inner wall of the universal nut 4; the lower joint 1 The upper end of the universal seat 2 is formed with a plurality of inserts 101 distributed at equal angles along the circumferential direction. Correspondingly, the outer side of the lower end of the universal seat 2 is provided with a plurality of slots 201 distributed at equal angles along the circumferential direction. The number and position of the slots 201 are matched with the number and position of the inserts 101. The plurality of inserts 101 are respectively inserted into the plurality of slots 201. The number of shear pins 25 is the same as the number of inserts 101. The plurality of shear pins 25 respectively pass through the plurality of inserts 101 horizontally and are respectively inserted and screwed into the plurality of universal seats 2. The inner sides of the two rubber seats 11 are provided with a vertically distributed and mutually matched arc groove 111. The two suction rubbers 10 are respectively provided in the two arc grooves 111. The inner sides of the two suction rubbers 10 are provided with a vertically distributed and mutually matched arc hole 1001. ;

[0017] When in use, fix one end of the wire rope, and pass the other end of the wire rope downward through the right side of the roller 24, and then vertically downward through the guide tube 16, between the two upper slips 15, the lower slip copper sleeve 17, a through hole 305 on the upper side, between the two arc holes 1001 and the wire hole 304, and then pass through the two pulleys 6 from bottom to top, and then pass through the wire hole 304, between the two arc holes 1001, a through hole 305 on the upper side, the lower slip copper sleeve 17, between the two upper slips 15 and the guide tube 16, and finally pass through the left side of the upper pulley 23 and lead out to the right; a drill rod column is provided in the output assembly; when the drill rod column completes drilling, compressed air is introduced into the hydraulic cylinder 13 through the right-angle joint 19, thereby pressing the hydraulic cylinder 13 to move the hydraulic cylinder 13. The piston 14 moves vertically downward along the conduit 16, thereby passing the air in the box body 3 into the drilled well hole through a sleeve 306, a ferrule 5, a universal seat 2 and a lower joint 1 on the lower side, thereby preventing the liquid in the well hole from entering the output assembly and the box body 3 upward (the above principle is the prior art); then, the other end of the wire rope is pulled, and the wire rope will pull the two pulleys 6 upward with the help of the upper pulley 23, and then pull the box body 3 upward with the help of the two pulley shafts 7, thereby driving the access assembly, the output assembly and the rubber core to move upward together to leave the well hole; if the rubber core is worn, just remove the two rubber seat pressure covers 12, and the two suction rubbers 10 can be easily and quickly replaced; the two first lifting rings 27 and the two second lifting rings 30 facilitate the overall lifting and moving.

[0018] The blowout preventer is a tool used to prevent the drilling fluid in the raised drill pipe from overflowing and contaminating the drilling platform when the joint threads are removed during drilling. Since the traction wire rope passes through the rubber core in the blowout preventer and slides frequently in the rubber core, the rubber core wears out quickly and needs to be replaced frequently. However, the existing blowout preventer must first remove the access component, and then take out the rubber core from the top of the box body 3 and replace it, which is troublesome, time-consuming and labor-intensive. Moreover, the replacement of the rubber core is a complete replacement, which is costly. In addition, the existing blowout preventer is only provided with one pulley to cooperate with the wire rope, and the wire rope is pulled during drilling. The first window 301 is provided on both the front and rear sides of the box body 3, and two detachable rubber seat covers 12 are used to quickly remove and replace the two suction rubbers 10, without removing the access components, which is simple to operate and saves time and effort. Moreover, the two rubber seats 11 and the two rubber seat covers 12 can continue to be used, so the cost is saved. In addition, the two pulleys 6 are provided to cooperate with the steel wire rope, so as to avoid the spray prevention box from tilting and greatly reduce the wear of the rubber core when the steel wire rope is pulled.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blowout prevention box, comprising a box body, a first hanging ring, an access assembly, an output assembly and a rubber core; a first hanging ring symmetrically distributed on both sides of the box body is provided; the access assembly and the output assembly are respectively arranged at the upper and lower ends of the box body, and the rubber core is arranged inside the box body, characterized in that: The rubber core comprises a suction rubber, a rubber seat, a rubber seat pressure cover, a roller pressure cover, a second lifting ring, a pulley and a pulley shaft; a transversely distributed partition is provided inside the box body, and a through-line hole is provided in the partition; a first window symmetrically distributed to each other is provided on the front and rear sides of the box body, a second window is provided on the front side of the box body, two first windows are provided above the partition, and the second window is provided below the partition; a detachable rubber seat pressure cover is provided on the front and rear sides of the box body, and a detachable rubber seat is provided on the inner side of the two rubber seat pressure covers, and the two rubber seats are respectively inserted into the box body through the two first windows; two symmetrically distributed suction rubbers are provided between the two rubber seats, and a second lifting ring is provided on the upper side of the two rubber seat pressure covers, and the roller pressure cover is detachably fixed to the front side of the box body and is provided in front of the second window, and the pulley shaft comprises two, and the two pulley shafts are both transversely and symmetrically arranged inside the box body and are both arranged below the partition, and a rotatable pulley is sleeved on the two pulley shafts; A sleeve is formed outwardly on both the upper and lower sides of the box body, and a through hole is opened on both the upper and lower sides of the box body, and the two through holes are respectively arranged concentrically with the two sleeves; The access assembly includes an upper slip, a piston, a hydraulic cylinder, a conduit, a lower slip, a lower slip copper sleeve, a spring, a right-angle joint and a traction assembly; the lower end of the hydraulic cylinder is sleeved and fixed outside a sleeve on the upper side; the conduit is vertically arranged inside the hydraulic cylinder, the upper end of the conduit is inserted and fixed at the center of the upper end of the conduit, the lower end of the conduit is inserted and fixed with two symmetrically arranged upper slips, one of the sleeves on the upper side is provided with two symmetrically distributed lower slips, the lower slip copper sleeve is vertically arranged between the two lower slips, the piston is movably sleeved outside the conduit and arranged in the hydraulic cylinder, the right-angle joint is arranged on one side of the upper end of the hydraulic cylinder and is interconnected with the inside of the hydraulic cylinder, the spring is sleeved on the outside of the conduit and the two upper slips and is arranged between the piston and the two lower slips, and the traction assembly is arranged above the hydraulic cylinder; A vertically distributed and mutually matched arc groove is opened on the inner side of the two rubber seats, and the two suction rubbers are respectively arranged in the two arc grooves. A vertically distributed and mutually matched arc hole is opened on the inner side of the two suction rubbers.

2. A blowout prevention box according to claim 1, characterized in that: The upper end of the spring abuts against the lower end of the piston, and the lower end of the spring abuts against the upper ends of the two lower slips.

3. A blowout prevention box according to claim 2, characterized in that: The traction assembly includes a guide wheel box, a pin shaft, an upper pulley and a roller; the guide wheel box is fixed to the upper end of the hydraulic cylinder, and two pin shafts are arranged in the guide wheel box which are horizontally and symmetrically distributed left and right. An upper pulley and a roller are respectively mounted on the two pin shafts, and the roller is arranged on the left side of the upper pulley.

4. A blowout prevention box according to claim 1, characterized in that: The output assembly includes a ferrule, a universal nut, a universal seat, a shear pin and a lower joint; the ferrule is sleeved and fixed on the outside of a sleeve on the lower side, the universal nut is sleeved on the outside of the ferrule, the upper end of the universal seat is inserted and screwed into the lower end of the universal nut and abuts against the lower end of the ferrule, and the upper end of the lower joint is sleeved on the outer side of the lower end of the universal seat and fixed by multiple shear pins.

5. A blowout prevention box according to claim 4, characterized in that: A step ring is formed on the outer side of the middle part of the ferrule, and the upper side of the step ring is fitted on the upper inner wall of the universal nut.

6. A blowout prevention box according to claim 4, characterized in that: The upper end of the lower joint is formed with a plurality of plugs distributed at equal angles along the circumferential direction. Correspondingly, the outer side of the lower end of the universal seat is provided with a plurality of slots distributed at equal angles along the circumferential direction. The number and positions of the slots are matched with the number and positions of the plugs, and the plurality of plugs are respectively inserted into the plurality of slots.

7. The blowout prevention box according to claim 4, characterized in that: The number of the shear pins is the same as the number of the inserts, and the plurality of shear pins respectively pass through the plurality of inserts transversely and are respectively inserted and screwed into the plurality of universal seats.

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