Cylinder sliding sleeve assembly and cylinder device

Abstract

The invention provides a barrel sliding sleeve assembly and a barrel device, the barrel sliding sleeve assembly comprises a barrel and a plurality of sliding sleeves, when a first ball is thrown into the barrel, the first ball falls downwards in an inner cavity and is located on the first sliding sleeve, the first sliding sleeve is driven to move downwards through hydraulic pressure rising, the first sliding sleeve thrusts and breaks a first shearing screw, and at the moment, the first shearing screw is cut off; the first sliding sleeve and the discharge hole are staggered, so that the discharge hole is communicated with the inner cavity, and the barrel is opened; when the second ball body is thrown into the barrel body, the second ball body falls downwards in the inner cavity and is located on the second sliding sleeve, the second sliding sleeve is driven to move downwards through hydraulic pressure rising, the second sliding sleeve thrusts and breaks the second shearing screw, and at the moment, the second sliding sleeve and the discharging hole are oppositely arranged, so that the second sliding sleeve seals and covers the discharging hole, and closing of the barrel body is achieved; the diameter of the second ball is larger than that of the first ball, so that the first ball and the second ball open or close the barrel, a steel wire opening and closing tool is avoided, and the operation convenience of the barrel sliding sleeve assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of barrel device, and particularly relates to a barrel sliding sleeve assembly and a barrel device. BACKGROUND

[0002] With the development of science and technology, the barrel device is used for conveying oil and carrying out fracturing operation on a designated layer, and the barrel sliding sleeve assembly is a part of the barrel device. In the prior art, the existing barrel sliding sleeve assembly comprises a barrel and a first sliding sleeve, the first sliding sleeve is movably connected to the barrel, and when the first sliding sleeve is misaligned with a discharge hole of the barrel, the barrel is opened. The first sliding sleeve needs to be driven by a wire switching tool to open or close the barrel. However, the wire tool is difficult to be lowered or the wire is broken, so that the operation convenience of the existing barrel sliding sleeve assembly is poor. SUMMARY

[0003] The present application provides a barrel sliding sleeve assembly and a barrel device. The barrel is arranged in the up-down direction, and the barrel is provided with an inner cavity and a discharge hole. The discharge hole is arranged on the circumferential side wall of the barrel and selectively communicates with the inner cavity. A plurality of sliding sleeves are arranged in the length direction of the barrel and movably connected to the barrel. The plurality of sliding sleeves include a first sliding sleeve and a second sliding sleeve. The second sliding sleeve is arranged on the upper side of the first sliding sleeve, and the inner diameter of the second sliding sleeve is larger than that of the first sliding sleeve. The first sliding sleeve is connected to the barrel through a first shear screw. The first sliding sleeve initially covers the discharge hole. The second sliding sleeve is connected to the barrel through a second shear screw, and the second sliding sleeve is in a static state relative to the barrel. When a first ball is put into the barrel, the first ball falls downward in the inner cavity and sits on the first sliding sleeve. The first sliding sleeve is driven to move downward by hydraulic pressure rise, and the first sliding sleeve breaks the first shear screw. At this time, the first sliding sleeve is misaligned with the discharge hole, so that the discharge hole communicates with the inner cavity, and the barrel is opened. When a second ball is put into the barrel, the second ball falls downward in the inner cavity and sits on the second sliding sleeve. The second sliding sleeve is driven to move downward by hydraulic pressure rise, and the second sliding sleeve breaks the second shear screw. At this time, the second sliding sleeve is arranged opposite to the discharge hole, so that the second sliding sleeve covers the discharge hole, and the barrel is closed. The diameter of the second ball is larger than that of the first ball, so as to open or close the barrel by the first ball and the second ball. The use of the wire switching tool is avoided, and the operation convenience of the barrel sliding sleeve assembly is improved.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a barrel sliding sleeve assembly applied to a barrel device; the barrel sliding sleeve assembly comprises: a barrel arranged in the up-down direction, the barrel being provided with an inner cavity and a discharge hole, the discharge hole being arranged on the circumferential side wall of the barrel and selectively communicating with the inner cavity; A plurality of sliding sleeves are arranged along the length direction of the barrel, and are movably connected to the barrel. The plurality of sliding sleeves include a first sliding sleeve and a second sliding sleeve. The second sliding sleeve is arranged above the first sliding sleeve, and has a larger inner diameter than the first sliding sleeve. The first sliding sleeve is connected to the barrel by a first shear screw. The first sliding sleeve initially covers the discharge hole. The second sliding sleeve is connected to the barrel by a second shear screw, and is in a static state relative to the barrel. When the first ball is put into the barrel, the first ball falls downward in the inner cavity and sits on the first sliding sleeve. The first sliding sleeve is driven to move downward by hydraulic rising, breaks the first shear screw, and is misaligned with the discharge hole, so that the discharge hole is connected to the inner cavity, and the barrel is opened. When the second ball is put into the barrel, the second ball falls downward in the inner cavity and sits on the second sliding sleeve. The second sliding sleeve is driven to move downward by hydraulic rising, breaks the second shear screw, and is aligned with the discharge hole, so that the second sliding sleeve covers the discharge hole, and the barrel is closed. The diameter of the second ball is larger than that of the first ball.

[0005] Optionally, the first sliding sleeve is connected with a first ball seat, the first ball is clamped in the first ball seat, and the diameter of the first ball is larger than the inner diameter of the first ball seat. The first shear screw is inserted into the first sliding sleeve and the barrel along the horizontal direction. When the hydraulic rising occurs, the first sliding sleeve breaks the first shear screw, so that the first sliding sleeve can slide downward relative to the barrel.

[0006] Optionally, the circumferential wall of the first sliding sleeve is provided with a first guide groove, and the first guide groove extends along the axis direction of the first sliding sleeve. The barrel is connected with a first anti-rotation screw, the first anti-rotation screw is fixedly connected to the barrel and is inserted into the first guide groove, so that the barrel descends under the guidance of the first anti-rotation screw and does not deviate.

[0007] Optionally, the barrel sliding sleeve assembly further includes a limiting ring, and the limiting ring is screwed to the barrel and limits the first sliding sleeve.

[0008] Optionally, the first sliding sleeve is provided with a first sealing member, and the circumferential wall of the first sealing member contacts the inner side wall of the inner cavity, so that the first sealing member sealingly connects the first sliding sleeve and the barrel.

[0009] Optionally, the second sliding sleeve is connected with a second ball seat, a second ball is engaged in the second ball seat, and a ball diameter of the second ball is greater than an inner diameter of the second ball seat; the second shear screw is inserted into the second sliding sleeve and the barrel along a horizontal direction; When the hydraulic pressure rises, the second sliding sleeve breaks the second shear screw, so that the second sliding sleeve can slide downward relative to the barrel, and the second sliding sleeve covers the discharge hole.

[0010] Optionally, when the first ball is put into the barrel, the first ball passes through the second sliding sleeve and the second ball seat and contacts the first ball seat. The ball diameter of the first ball is less than the inner diameter of the second ball seat.

[0011] Optionally, when the second ball is put into the barrel, the second ball falls downward in the inner cavity, the second ball is engaged in the second ball seat, and when the hydraulic pressure rises, the second ball drives the second sliding sleeve to move downward, the second sliding sleeve breaks the second shear screw, and at this time, the second sliding sleeve covers the discharge hole.

[0012] Optionally, a second guide groove is arranged on a circumferential wall of the second sliding sleeve; the second guide groove extends along an axial direction of the second sliding sleeve. The barrel is connected with a second anti-rotation screw, the second anti-rotation screw is fixedly connected to the barrel and is inserted into the second guide groove, so that the barrel descends under the guidance of the second anti-rotation screw and does not deviate.

[0013] To achieve the above object, the present application provides the following technical scheme: a barrel device comprising the barrel sliding sleeve assembly.

[0014] Compared with the prior art, the present application has the following beneficial effects: The application provides a barrel sliding sleeve assembly and a barrel device. The barrel is arranged in the up-down direction, and is provided with an inner cavity and a discharge hole. The discharge hole is arranged on the circumferential wall of the barrel and selectively communicates with the inner cavity. A plurality of sliding sleeves are arranged at intervals along the length direction of the barrel, and are movably connected to the barrel. The plurality of sliding sleeves include a first sliding sleeve and a second sliding sleeve. The second sliding sleeve is arranged on the upper side of the first sliding sleeve, and the inner diameter of the second sliding sleeve is larger than that of the first sliding sleeve. The first sliding sleeve is connected to the barrel through a first shear screw. The first sliding sleeve initially covers the discharge hole. The second sliding sleeve is connected to the barrel through a second shear screw, and is in a static state relative to the barrel. When a first ball is put into the barrel, the first ball falls downward in the inner cavity and is seated on the first sliding sleeve, and is driven to move downward through hydraulic rising. The first sliding sleeve breaks the first shear screw. At this time, the first sliding sleeve is misaligned with the discharge hole, so that the discharge hole communicates with the inner cavity, and the barrel is opened. When a second ball is put into the barrel, the second ball falls downward in the inner cavity and is seated on the second sliding sleeve, and is driven to move downward through hydraulic rising. The second sliding sleeve breaks the second shear screw. At this time, the second sliding sleeve is arranged opposite to the discharge hole, so that the second sliding sleeve covers the discharge hole, and the barrel is closed. The diameter of the second ball is larger than that of the first ball, so that the first ball and the second ball can open or close the barrel, the use of a steel wire switch tool is avoided, and the operation convenience of the barrel sliding sleeve assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference signs represent the same parts.

[0017] Fig. 1 A schematic view of a barrel sliding sleeve assembly according to one embodiment of the present application is shown.

[0018] Fig. 2 A cross-sectional view of an initial state of a barrel sliding sleeve assembly according to one embodiment of the present application is shown.

[0019] Fig. 3 A cross-sectional view of a barrel sliding sleeve assembly after a first ball enters according to one embodiment of the present application is shown.

[0020] Fig. 4 A cross-sectional view of a barrel sliding sleeve assembly after a second ball enters according to one embodiment of the present application is shown.

[0021] Fig. 5 A cross-sectional view of a first sliding sleeve of a sliding sleeve assembly is shown according to an embodiment of the present application.

[0022] Reference signs 100, sliding sleeve assembly; 10, barrel; 10a, inner cavity; 10b, discharge hole; 11, first anti-rotation screw; 12, second anti-rotation screw; 20, first sliding sleeve; 20a, first guide groove; 21, first ball seat; 22, first shear screw; 23, first ball; 24, first sealing element; 30, second sliding sleeve; 30a, second guide groove; 30b, clamping groove; 31, second shear screw; 32, second ball seat; 33, second ball. DETAILED DESCRIPTION

[0023] 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 of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0024] Please refer to the drawings in the embodiments of the present application Figs. 1-5 The present application provides a barrel sliding sleeve assembly 100, which is applied to a barrel device, and is used for fracturing operation on a designated layer.

[0025] Please refer to the drawings in the embodiments of the present application Figs. 1-5In the embodiment of the present application, the barrel sleeve assembly 100 comprises a barrel 10 and a plurality of sleeves 20. The barrel 10 is arranged in the up-down direction. The barrel 10 is provided with an inner cavity 10a and a discharge hole 10b. The discharge hole 10b is arranged on the peripheral side wall of the barrel 10 and selectively communicates with the inner cavity 10a. The plurality of sleeves 20 are arranged in the length direction of the barrel 10. The plurality of sleeves 20 are movably connected to the barrel 10. The plurality of sleeves 20 comprise a first sleeve 21 and a second sleeve 22. The second sleeve 22 is arranged on the upper side of the first sleeve 21. The inner diameter of the second sleeve 22 is greater than that of the first sleeve 21. The first sleeve 21 is connected to the barrel 10 through a first shear screw 23. The first sleeve 21 initially covers the discharge hole 10b. The second sleeve 22 is connected to the barrel 10 through a second shear screw 24. The second sleeve 22 is in a static state relative to the barrel 10. When the first ball is put into the barrel 10, the first ball falls downward in the inner cavity 10a and sits on the first sleeve 21. The first sleeve 21 moves downward by hydraulic rising. The first sleeve 21 breaks the first shear screw 23. At this time, the first sleeve 21 is arranged in a staggered manner with the discharge hole 10b, so that the discharge hole 10b communicates with the inner cavity 10a, thereby realizing the opening of the barrel 10. When the second ball is put into the barrel 10, the second ball falls downward in the inner cavity 10a and sits on the second sleeve 22. The second sleeve 22 moves downward by hydraulic rising. The second sleeve 22 breaks the second shear screw 24. At this time, the second sleeve 22 is arranged in a relative manner with the discharge hole 10b, so that the second sleeve 22 covers the discharge hole 10b, thereby realizing the closing of the barrel 10. The diameter of the second ball is greater than that of the first ball, so as to realize the opening or closing of the barrel 10 by the first ball and the second ball. The use of a steel wire switch tool is avoided, and the operation convenience of the barrel sleeve assembly 100 is improved.

[0026] Please refer to the accompanying drawings Figs. 1-5 In the embodiment of the present application, the barrel 10 is arranged in the up-down direction. The barrel 10 is provided with an inner cavity 10a and a discharge hole 10b. The inner cavity 10a serves as the internal space of the barrel 10. The discharge hole 10b is arranged on the peripheral side wall of the barrel 10 and selectively communicates with the inner cavity 10a.

[0027] The plurality of sleeves 20 are arranged in the length direction of the barrel 10. The plurality of sleeves 20 are movably connected to the barrel 10, so as to adjust the position of the plurality of sleeves 20 relative to the barrel 10. The plurality of sleeves 20 comprise a first sleeve 21 and a second sleeve 22. The second sleeve 22 is arranged on the upper side of the first sleeve 21. The inner diameter of the second sleeve 22 is greater than that of the first sleeve 21. The first sleeve 21 is connected to the barrel 10 through a first shear screw 23. The first sleeve 21 initially covers the discharge hole 10b. The second sleeve 22 is connected to the barrel 10 through a second shear screw 24. The second sleeve 22 is in a static state relative to the barrel 10.

[0028] When the first ball is put into the barrel 10, the first ball falls downward in the inner cavity 10a and is seated on the first sliding sleeve 21, the first sliding sleeve 21 is driven to move downward by hydraulic rising, the first sliding sleeve 21 breaks the first shear screw 23, at this time, the first sliding sleeve 21 is misaligned with the discharge hole 10b, so that the discharge hole 10b is communicated with the inner cavity 10a, the opening of the barrel 10 is realized; when the second ball is put into the barrel 10, the second ball falls downward in the inner cavity 10a and is seated on the second sliding sleeve 22, the second sliding sleeve 22 is driven to move downward by hydraulic rising, the second sliding sleeve 22 breaks the second shear screw 24, at this time, the second sliding sleeve 22 is oppositely arranged with the discharge hole 10b, so that the second sliding sleeve 22 covers the discharge hole 10b, the closing of the barrel 10 is realized, the diameter of the second ball is greater than that of the first ball, so as to realize the opening or closing of the barrel 10 by the first ball and the second ball, the use of the steel wire switching tool is avoided, and the operation convenience of the barrel sliding sleeve assembly 100 is improved.

[0029] Please refer to the accompanying drawings Figs. 1-3 and 5, in the embodiment of the present application, the first sliding sleeve 21 is connected with the first ball seat 211, the first ball is clamped in the first ball seat 211, the ball diameter of the first ball is greater than the inner diameter of the first ball seat 211; the first shear screw 23 is inserted in the first sliding sleeve 21 and the barrel 10 along the horizontal direction; so as to limit the horizontal position between the first sliding sleeve 21 and the barrel 10 by the first shear screw 23, and prevent the first sliding sleeve 21 from accidentally deviating relative to the barrel 10.

[0030] When the hydraulic rising, the first sliding sleeve 21 breaks the first shear screw 23, so that the first sliding sleeve 21 can slide downward relative to the barrel 10, to realize that the barrel 10 is in the open state, avoiding the use of the steel wire switching tool to open, so as to facilitate the fracturing operation of the specified layer.

[0031] Please refer to the accompanying drawings Figs. 1-3 and 5, in the embodiment of the present application, the circumferential wall of the first sliding sleeve 21 is provided with the first guide groove 21a; the first guide groove 21a extends along the axial direction of the first sliding sleeve 21; the barrel 10 is connected with the first anti-rotation screw 11, the first anti-rotation screw 11 is fixedly connected to the barrel 10 and is inserted into the first guide groove 21a, so that the barrel 10 is guided to descend by the first anti-rotation screw 11 and does not deviate, the first anti-rotation screw 11 plays a role of guiding and positioning, so as to make the first sliding sleeve 21 move only along the up-down direction relative to the barrel 10, and ensure the accurate position and movement track of the first sliding sleeve 21 relative to the barrel 10.

[0032] The first guide slot 21a has a plurality of first guide slots 21a arranged annularly and spaced apart along the first sliding sleeve 21; the first anti-rotation screw 11 has a plurality of first anti-rotation screws 11 respectively inserted into the corresponding first guide slot 21a, and the plurality of first anti-rotation screws 11 are arranged to limit a plurality of different positions of the first sliding sleeve 21, thereby avoiding the influence of the failure of the first anti-rotation screw 11 on the guidance and positioning between the cylinder body 10 and the first sliding sleeve 21.

[0033] Please refer to the accompanying drawings Figs. 1-3 In the embodiment of the present application, the cylinder body sliding sleeve assembly 100 further comprises a limiting ring 30, which is located at the lower end of the cylinder body 10, and is screwed onto the cylinder body 10 and limits the first sliding sleeve 21, so that the first sliding sleeve 21 is fitted to the limiting ring 30 under the action of hydraulic expansion, thereby facilitating the limiting ring 30 to prevent the first sliding sleeve 21 from continuing to move downward.

[0034] The cylinder body 10 and the first sliding sleeve 21 are provided with a snap ring 40, which respectively contacts the cylinder body 10 and the first sliding sleeve 21, and when the first sliding sleeve 21 is fitted to the limiting ring 30 under the action of hydraulic expansion, the snap ring 40 prevents the first sliding sleeve 21 from moving upward, thereby ensuring the opening state of the first sliding sleeve 21 relative to the cylinder body 10.

[0035] Please refer to the accompanying drawings Figs. 1-3 In the embodiment of the present application, the first sliding sleeve 21 is provided with a first sealing member 212, and the peripheral side wall of the first sealing member 212 contacts the inner side wall of the inner cavity 10a, so that the first sealing member 212 sealingly connects the first sliding sleeve 21 and the cylinder body 10, thereby ensuring the sealing effect between the first sliding sleeve 21 and the cylinder body 10, and preventing the oil from flowing along the connecting portion between the first sliding sleeve 21 and the cylinder body 10 to the lower end of the inner cavity 10a.

[0036] Please refer to the accompanying drawings Figs. 1-4 In the embodiment of the present application, the second sliding sleeve 22 is connected with a second ball seat 221, a second ball body is clamped in the second ball seat 221, and the ball diameter of the second ball body is greater than the inner diameter of the second ball seat 221; the second shear screw 24 is inserted into the second sliding sleeve 22 and the cylinder body 10 in the horizontal direction; so as to limit the horizontal position between the second sliding sleeve 22 and the cylinder body 10, and prevent the second sliding sleeve 22 from accidentally deviating relative to the cylinder body 10.

[0037] When the hydraulic pressure rises, the second sliding sleeve 22 breaks the second shear screw 24, so that the second sliding sleeve 22 can slide downward relative to the cylinder body 10, and the second sliding sleeve 22 covers the discharge hole 10b, so as to realize the closed state of the cylinder body 10, thereby avoiding the use of a steel wire switch tool to close.

[0038] Please refer to the accompanying drawings Figs. 1-4In the embodiment of the present application, when the first ball is put into the barrel 10, the first ball penetrates the second sliding sleeve 22 and the second ball seat 221 and contacts the first ball seat 211; so as to facilitate the first ball to be clamped in the first ball seat 211, thereby facilitating the first ball to block the first ball seat 211, and further facilitating the first sliding sleeve 21 to move relative to the barrel 10 when the hydraulic pressure rises. The ball diameter of the first ball is smaller than the inner diameter of the second ball seat 221, so as to realize that the first ball penetrates the second sliding sleeve 22 and the second ball seat 221 to the first ball seat 211, while preventing the second ball from being in the first ball seat 211.

[0039] Please refer to the accompanying drawings Figs. 1-4 In the embodiment of the present application, when the second ball is put into the barrel 10, the second ball falls downward in the inner cavity 10a, the second ball is clamped in the second ball seat 221, and when the hydraulic pressure rises, the second sliding sleeve 22 is driven to move downward, the second sliding sleeve 22 breaks the second shear screw 24, at this time, the second sliding sleeve 22 covers the discharge hole 10b, so as to realize that the barrel 10 is in a closed state, avoiding the use of a steel wire switch tool to close, and improving the operation convenience of the barrel sliding sleeve assembly 100.

[0040] Please refer to the accompanying drawings Figs. 1-4 In the embodiment of the present application, the circumferential wall of the second sliding sleeve 22 is provided with a second guide groove 22a; the second guide groove 22a extends along the axial direction of the second sliding sleeve 22; the barrel 10 is connected with a second anti-rotation screw 12, the second anti-rotation screw 12 is fixedly connected to the barrel 10 and is inserted into the second guide groove 22a, so that the barrel 10 is guided to descend by the second anti-rotation screw 12 and is not deflected, the second anti-rotation screw 12 plays a role of guiding and positioning, so as to facilitate the second sliding sleeve 22 to move relative to the barrel 10 only in the up-down direction, and ensure the accurate position and movement track of the second sliding sleeve 22 relative to the barrel 10.

[0041] A limiting elastic ring 50 is arranged between the barrel 10 and the second sliding sleeve 22, the limiting elastic ring 50 contacts the barrel 10 and the second sliding sleeve 22 respectively, when the second sliding sleeve 22 is attached to the first sliding sleeve 21 under the driving of the hydraulic pressure rising, the limiting elastic ring 50 prevents the second sliding sleeve 22 from moving upward, and ensures the closed state of the second sliding sleeve 22 relative to the barrel 10.

[0042] The barrel 10 comprises an anti-rotation upper barrel 13 and an anti-rotation lower barrel 14, the anti-rotation upper barrel 13 is arranged on the upper side of the anti-rotation lower barrel 14, the anti-rotation upper barrel 13 is screwed to the anti-rotation lower barrel 14, the first sliding sleeve 21 is arranged relative to the anti-rotation lower barrel 14, and the second sliding sleeve 22 is arranged relative to the anti-rotation upper barrel 13.

[0043] Action flow: put in the first ball, the first ball is engaged in the first ball seat 211, the push force generated by hydraulic pressure is used to cut the first shear screw 23, so that the first sliding sleeve 21 moves to the limit ring 30, and is limited by the snap ring 40 to prevent upward movement, to achieve the first opening of the cylinder 10, and the specified layer is fractured.

[0044] When the fracturing is completed and the cylinder 10 needs to be closed, the second ball is put in, the second ball is engaged in the second ball seat 221, the push force generated by hydraulic pressure is used to cut the second shear screw 24, so that the second sliding sleeve 22 moves to the first sliding sleeve 21; to achieve the first closing of the cylinder 10, the second sliding sleeve 22 is limited by the limiting elastic ring 50 to prevent upward movement to maintain the closed state. When the cylinder 10 needs to be opened subsequently, the appropriate hydraulic switch tool is lowered through the coiled tubing operation to hang the inner hole of the second sliding sleeve 22 to open and close.

[0045] In the second application embodiment, a cylinder device includes a cylinder sliding sleeve assembly 100, the cylinder sliding sleeve assembly 100 is part of the cylinder device, and the cylinder device is used for conveying medium such as engineering machinery hydraulic cylinder 10, seabed natural gas, oil, irrigation, steel plant, chemical plant and the like.

[0046] Compared with the prior art, the beneficial effects of the present application are: The present application provides a barrel sliding sleeve assembly 100 and a barrel device, the barrel 10 is arranged in the up-down direction, the barrel 10 is provided with an inner cavity 10a and a discharge hole 10b, the discharge hole 10b is arranged on the circumferential wall of the barrel 10 and selectively communicates with the inner cavity 10a; a plurality of sliding sleeves 20 are arranged along the length direction of the barrel 10, the plurality of sliding sleeves 20 are movably connected to the barrel 10, the plurality of sliding sleeves 20 include a first sliding sleeve 21 and a second sliding sleeve 22, the second sliding sleeve 22 is arranged on the upper side of the first sliding sleeve 21, the inner diameter of the second sliding sleeve 22 is greater than that of the first sliding sleeve 21, the first sliding sleeve 21 is connected to the barrel 10 through a first shear screw 23; the first sliding sleeve 21 initially covers the discharge hole 10b; the second sliding sleeve 22 is connected to the barrel 10 through a second shear screw 24, and the second sliding sleeve 22 is in a static state relative to the barrel 10; when a first ball is put into the barrel 10, the first ball falls downward in the inner cavity 10a and sits on the first sliding sleeve 21, and the first sliding sleeve 21 is driven to move downward through hydraulic rising, the first sliding sleeve 21 breaks the first shear screw 23, at this time, the first sliding sleeve 21 is arranged in a staggered manner with the discharge hole 10b, so that the discharge hole 10b communicates with the inner cavity 10a, and the opening of the barrel 10 is realized; when a second ball is put into the barrel 10, the second ball falls downward in the inner cavity 10a and sits on the second sliding sleeve 22, and the second sliding sleeve 22 is driven to move downward through hydraulic rising, the second sliding sleeve 22 breaks the second shear screw 24, at this time, the second sliding sleeve 22 is arranged in a relative manner with the discharge hole 10b, so that the second sliding sleeve 22 covers the discharge hole 10b, and the closing of the barrel 10 is realized, the diameter of the second ball is greater than that of the first ball, so as to realize the opening or closing of the barrel 10 by the first ball and the second ball, the use of a steel wire switch tool is avoided, and the operation convenience of the barrel sliding sleeve assembly 100 is improved.

[0047] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directionality indications also change accordingly.

[0048] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element through a middle element.

[0049] In addition, the descriptions involving "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0050] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made on the basis of the inventive concept of the present application, and the contents of the specification and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A barrel sliding sleeve assembly, characterized in that, The application is applied to a barrel device; the barrel sleeve assembly comprises: a barrel arranged in the up-down direction, the barrel is provided with an inner cavity and a discharge hole, the discharge hole is arranged on the circumferential wall of the barrel and selectively communicates with the inner cavity; a plurality of sleeves arranged in the length direction of the barrel, the plurality of sleeves are movably connected to the barrel, the plurality of sleeves comprise a first sleeve and a second sleeve, the second sleeve is arranged on the upper side of the first sleeve, the inner diameter of the second sleeve is larger than that of the first sleeve, the first sleeve is connected to the barrel through a first shear screw; the first sleeve initially covers the discharge hole; the second sleeve is connected to the barrel through a second shear screw, and the second sleeve is in a static state relative to the barrel; when a first ball is put into the barrel, the first ball falls downward in the inner cavity and is seated on the first sleeve, and the first sleeve is driven to move downward by hydraulic rising, the first sleeve breaks the first shear screw, at this time, the first sleeve is misaligned with the discharge hole, so that the discharge hole communicates with the inner cavity, and the barrel is opened; when a second ball is put into the barrel, the second ball falls downward in the inner cavity and is seated on the second sleeve, and the second sleeve is driven to move downward by hydraulic rising, the second sleeve breaks the second shear screw, at this time, the second sleeve is arranged opposite to the discharge hole, so that the second sleeve covers the discharge hole, the barrel is closed, and the diameter of the second ball is larger than that of the first ball.

2. The barrel slide assembly of claim 1, wherein, the first sleeve is connected with a first ball seat, the first ball is engaged in the first ball seat, and the diameter of the first ball is larger than the inner diameter of the first ball seat; the first shear screw is inserted into the first sleeve and the barrel in the horizontal direction; when the hydraulic rising, the first sleeve breaks the first shear screw, so that the first sleeve can slide downward relative to the barrel.

3. The barrel slide assembly of claim 1, wherein, the circumferential wall of the first sleeve is provided with a first guide groove; the first guide groove extends along the axis direction of the first sleeve; the barrel is connected with a first anti-rotation screw, the first anti-rotation screw is fixedly connected to the barrel and is inserted into the first guide groove, so that the barrel descends under the guidance of the first anti-rotation screw and does not deviate.

4. The barrel slide assembly of claim 3, wherein, the barrel sleeve assembly further comprises a limiting ring, the limiting ring is screwed to the barrel and limits the first sleeve.

5. The barrel slide assembly of claim 1, wherein, the first sleeve is provided with a first sealing element, the circumferential wall of the first sealing element contacts the inner side wall of the inner cavity, so that the first sealing element sealingly connects the first sleeve and the barrel.

6. The barrel slide assembly of claim 1, wherein, the second sleeve is connected with a second ball seat, the second ball is engaged in the second ball seat, and the diameter of the second ball is larger than the inner diameter of the second ball seat; the second shear screw is inserted into the second sleeve and the barrel in the horizontal direction; when the hydraulic rising, the second sleeve breaks the second shear screw, so that the second sleeve can slide downward relative to the barrel, and the second sleeve covers the discharge hole.

7. The barrel slide assembly of claim 6, wherein, when the first ball is put into the barrel, the first ball passes through the second sleeve and the second ball seat and contacts the first ball seat; The first ball has a diameter smaller than the inner diameter of the second ball seat.

8. The barrel slide assembly of claim 6, wherein, When the second ball is put into the barrel, the second ball falls down in the inner cavity, the second ball is engaged with the second ball seat, and the hydraulic pressure rises to drive the second sliding sleeve to move downward, the second sliding sleeve breaks the second shear screw, and the second sliding sleeve covers the discharge hole.

9. The barrel slide assembly of claim 6, wherein, The circumferential wall of the second sliding sleeve is provided with a second guide groove, and the second guide groove extends along the axial direction of the second sliding sleeve. The barrel is connected with a second anti-rotation screw, the second anti-rotation screw is fixedly connected to the barrel and is inserted into the second guide groove, so that the barrel descends under the guidance of the second anti-rotation screw and does not deviate.

10. A barrel apparatus, characterized by, The barrel sliding sleeve assembly comprises the barrel sliding sleeve assembly as claimed in any one of claims 1 to 9.

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