A pulse jet cuttings bed destroyer

Abstract

The present invention discloses a pulse jet type cuttings bed breaker, including a fixed rod and a connecting pipe arranged outside the fixed rod, a breaker housing is fixedly connected to one side of the connecting pipe, a driving device is arranged on the fixed rod, a main shaft is arranged on the driving device, and a positioning hole is opened on one side of the connecting pipe. A connecting mechanism is arranged between the fixed rod and the main shaft, and the connecting mechanism is used to drive the connecting pipe and the breaker housing to rotate. A positioning mechanism is arranged on the fixed rod, and the positioning mechanism is used to support the inner side of the connecting pipe to prevent the connecting pipe from rotating. Relating to the field of drilling technology, the present application uses a cylinder to drive the insertion rod to move, and protective balls are arranged to reduce the wear between the components, and in the process of the insertion rod moving into the positioning hole, a reset assembly can be used to quickly insert the insertion rod into the positioning hole, which is convenient to use.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling, in particular to a pulse jet type cuttings bed destroyer. Background Art

[0002] A Chinese patent with publication number CN114320234A discloses a cuttings bed breaker using annular fluid, comprising a fixed rod and a breaker body, the breaker body comprising a connecting pipe, a breaker shell, a rotating pipe and a drill bit, the connecting pipe being arranged on the fixed rod, the breaker shell being fixedly mounted on an end of the connecting pipe away from the fixed rod and having a plurality of groups of third crushing heads on the breaker shell. The invention adds a detection device and a pressure sensing device to the existing cuttings bed breaker, the thickness of the cuttings bed can be detected by the detection device, the length of the third crushing head extending out of the breaker shell can be controlled by the magnetic field generator, the connection between the breaker body and the fixed rod or the driving device can be controlled by the air pump, the purpose of destroying the cuttings bed can be achieved by the third crushing head and the breaker body, the pressure sensing device can block the drilling fluid from entering the wellbore wall on the one hand, and the magnetic field generator and the air pump can be made to work on the other hand. However, the device has defects when in use. Since the driving device is connected to the first connecting disk, the first connecting disk is rotatable. When the connecting tube and the breaker housing need to be rotated, the second pin needs to be inserted into the through hole on the first connecting disk. Since the second pin and the through hole cannot be guaranteed to be on the same horizontal line every time, when the second pin is not inserted into the through hole, the second pin will always be clamped on the surface of the first connecting disk, which not only affects the rotation of the entire device, but also causes wear of the second pin and the first connecting disk. If debris is generated, it will further affect the rotation of the entire device, making it inconvenient to use. Summary of the invention

[0003] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a pulse jet type cuttings bed destroyer.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A pulse jet type cuttings bed breaker comprises a fixing rod and a connecting pipe arranged outside the fixing rod, one side of the connecting pipe is fixedly connected to a breaker housing, the fixing rod is provided with a driving device, the driving device is provided with a main shaft, and one side of the connecting pipe is provided with a positioning hole.

[0005] The connecting mechanism is arranged between the fixing rod and the main shaft, and is used for driving the connecting pipe and the breaker housing to rotate.

[0006] The positioning mechanism is arranged on the fixing rod, and is used for supporting the inner side of the connecting pipe to prevent the connecting pipe from rotating.

[0007] As a further solution of the present invention: a movable groove is provided at one end of the fixing rod, a limiting rod is fixedly connected in the movable groove, and two movable grooves are symmetrically arranged along the front and rear of the driving device.

[0008] As a further solution of the present invention: the connecting mechanism includes a cylinder fixedly connected to a fixed rod, and a circular plate movably connected to the main shaft through a synchronous operation component, two cylinders are symmetrically arranged along the driving device, and the two cylinders are fixedly connected with folding plates, a circular ring is fixedly connected between the two folding plates, a connecting arm is fixedly connected to the circular ring, and the connecting arm is slidably connected to the connecting pipe, an insertion rod for use with the positioning hole is connected to the circular plate through a reset component, the circular plate is movably connected to the connecting arm, and a protective ball is arranged on the insertion rod.

[0009] As a further solution of the present invention: the synchronous operation component includes an L-shaped plate fixedly connected to the main shaft, and a slide groove 1 and a slide groove 2 respectively penetrating through one side of the circular plate, the slide groove 1 is slidingly connected to the main shaft, and the slide groove 2 is slidingly connected to the L-shaped plate.

[0010] As a further solution of the present invention: the reset assembly includes a baffle fixedly connected to one end of the insertion rod, and a first spring sleeved on the insertion rod, and the first spring is fixedly connected to the baffle and the circular plate respectively.

[0011] As a further solution of the present invention: a clamping ball is rotatably connected to the inner side of the connecting arm, and the clamping ball is fitted to the circular plate.

[0012] As a further solution of the present invention: the positioning mechanism includes a slide plate slidably connected in a movable groove, the slide plate is slidably connected to a limiting rod, an arc plate is fixedly connected to the slide plate, a second spring is fixedly connected to the arc plate, and the arc plate is connected to the folding plate via a movable component.

[0013] As a further solution of the present invention: the moving assembly includes a first inclined plane block fixedly connected to the arc plate, and a second inclined plane block fixedly connected to the folding plate, and the first inclined plane block and the second inclined plane block are in contact with each other.

[0014] As a further solution of the present invention: a placement groove is opened at the other end of the insertion rod, a third spring is fixedly connected in the placement groove, one end of the third spring is fixedly connected to a connecting plate, one side of the connecting plate is fixedly connected to a protruding rod, the protective ball is located in the placement groove, and the protective ball is fit between the protruding rod.

[0015] As a further solution of the present invention: the placement groove is composed of a groove body 1 and a groove body 2, the groove body 1 is adapted to the protective ball, and the internal diameter of the groove body 2 is smaller than the diameter of the protective ball.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present application, when the cylinder is used to drive the insertion rod to move, the wear between the components can be reduced by setting a protective ball. In addition, when the insertion rod moves into the positioning hole, the reset assembly can be used to quickly insert the insertion rod into the positioning hole, which is convenient to use.

[0017] 2. The present application utilizes the coordinated use of an arc plate and a second spring to achieve support on the connecting tube to increase friction, thereby fixing the connecting tube to prevent the connecting tube from rotating, and utilizes a moving component to achieve synchronous operation between the positioning mechanism and the connecting mechanism, thereby achieving synchronous switching of the rotation and positioning of the connecting tube, which is convenient to use.

[0018] 3. The present application uses a placement groove, a third spring, a connecting plate and a protruding rod in coordination. During the process of the insertion rod moving into the positioning hole, since the protective ball rotates with the main shaft, when part of the protective ball is located in the positioning hole, the protective ball can move toward the placement groove, thereby avoiding impact that may cause damage to the protective ball, thereby protecting the protective ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a partial three-dimensional cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A; Figure 4 A three-dimensional diagram of the fixing rod and the positioning mechanism of the present invention; Figure 5 A first-view stereoscopic diagram of the connecting mechanism and the positioning mechanism of the present invention; Figure 6 is a three-dimensional diagram of a circular plate of the present invention; Figure 7 A second perspective stereogram of the connecting mechanism and the positioning mechanism of the present invention; Figure 8 is a three-dimensional cross-sectional view of the plunger of the present invention; Fig. 9 This is a three-dimensional cross-sectional view of the insertion rod of the present invention after the second ball is removed.

[0020] In the figure: 1, fixing rod; 2, connecting pipe; 3, breaker housing; 4, driving device; 5, main shaft; 6, positioning hole; 7, connecting mechanism; 71, cylinder; 72, synchronous operation component; 721, L-shaped plate; 722, slide groove one; 723, slide groove two; 73, round plate; 74, folding plate; 75, ring; 76, connecting arm; 77, reset component; 771, baffle; 772, first spring; 78, plug rod; 79, protective ball; 8, positioning mechanism; 81, slide plate; 82, arc plate; 83, second spring; 84, moving component; 841, first inclined surface block; 842, second inclined surface block; 9, movable groove; 10, limit rod; 11, clamping ball; 12, placement groove; 121, groove body one; 122, groove body two; 13, third spring; 14, connecting plate; 15, convex rod. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1 See also Figure 1-Figure 7 As shown, the present application provides a pulse jet type cuttings bed breaker, comprising a fixed rod 1 and a connecting pipe 2 arranged outside the fixed rod 1, a breaker housing 3 is fixedly connected to one side of the connecting pipe 2, a driving device 4 is arranged on the fixed rod 1, the driving device 4 is electrically connected to an external power supply and is controlled by an external control program, a main shaft 5 is arranged on the driving device 4, the fixed rod 1, the connecting pipe 2, the breaker housing 3, the driving device 4 and the main shaft 5 are all disclosed in the patent document with publication number CN114320234A, and are all prior arts, and a positioning hole 6 is opened on one side of the connecting pipe 2; A connecting mechanism 7 is provided between the fixing rod 1 and the main shaft 5, and is used to drive the connecting pipe 2 and the breaker housing 3 to rotate; The positioning mechanism 8 is arranged on the fixing rod 1 , and is used to support the inner side of the connecting pipe 2 to prevent the connecting pipe 2 from rotating.

[0023] A movable groove 9 is formed at one end of the fixing rod 1 , a limiting rod 10 is fixedly connected in the movable groove 9 , and two movable grooves 9 are symmetrically arranged along the front and rear sides of the driving device 4 .

[0024] The connecting mechanism 7 includes a cylinder 71 fixedly connected to the fixed rod 1, the cylinder 71 is electrically connected to an external power supply and controlled by an external control program, and a circular plate 73 movably connected to the main shaft 5 through a synchronous operation component 72. The cylinder 71 is symmetrically arranged along the driving device 4. A folding plate 74 is fixedly connected to the two cylinders 71, and a circular ring 75 is fixedly connected between the two folding plates 74. A connecting arm 76 is fixedly connected to the circular ring 75. The connecting arm 76 is slidably connected to the connecting pipe 2. The circular plate 73 is connected to a plug rod 78 used in conjunction with the positioning hole 6 through a reset component 77. The circular plate 73 is movably connected to the connecting arm 76, and a protective ball 79 is arranged on the plug rod 78. The cylinder 71 is turned on, and the cylinder 71 drives the folding plate 74 to move, and then drives the ring 75 to move, and then drives the connecting arm 76 to slide on the connecting pipe 2, and then drives the circular plate 73 to slide on the main shaft 5 and the L-shaped plate 721 through the clamping ball 11, thereby driving the insertion rod 78 to approach the connecting pipe 2. When the insertion rod 78 and the positioning hole 6 are not on the same horizontal line, as the cylinder 71 works, the insertion rod 78 drives the protective ball 79 to fit on the connecting pipe 2. At the same time, the protective ball 79 moves into the placement groove 12, and the protective ball 79 contacts the convex rod 15. When a thrust is applied, the third spring 13 is in a compressed state, and the insertion rod 78 slides on the circular plate 73, so that the first spring 772 is in a compressed state. Under the action of the synchronous operation component 72, the circular plate 73 rotates synchronously with the main shaft 5, thereby driving the insertion rod 78 to rotate. When the insertion rod 78 and the positioning hole 6 are on the same horizontal line, at this time, the first spring 772 and the third spring 13 will both recover, thereby resetting the protective ball 79 and the insertion rod 78. During the resetting process of the insertion rod 78, the insertion rod 78 is inserted into the positioning hole 6.

[0025] The synchronous operation assembly 72 includes an L-shaped plate 721 fixedly connected to the main shaft 5, and a first slide groove 722 and a second slide groove 723 respectively penetrating through one side of the circular plate 73, wherein the first slide groove 722 is slidably connected to the main shaft 5, and the second slide groove 723 is slidably connected to the L-shaped plate 721. The synchronous operation assembly 72 is provided to not only facilitate the circular plate 73 to rotate synchronously with the main shaft 5, but also enable the circular plate 73 to slide on the main shaft 5.

[0026] The reset assembly 77 includes a baffle 771 fixedly connected to one end of the insertion rod 78, and a first spring 772 sleeved on the insertion rod 78, wherein the first spring 772 is fixedly connected to the baffle 771 and the circular plate 73 respectively.

[0027] The inner side of the connecting arm 76 is rotatably connected with a clamping ball 11 , and the clamping ball 11 is in contact with the circular plate 73 .

[0028] Embodiment 2 Based on Example 1, see Figure 2 , Figure 4 , Figure 5 and Figure 7 shown.

[0029] The positioning mechanism 8 includes a slide plate 81 slidably connected in the movable groove 9, the slide plate 81 is slidably connected to the limit rod 10, an arc plate 82 is fixedly connected to the slide plate 81, a second spring 83 is fixedly connected to the arc plate 82, the second spring 83 is connected between the two arc plates 82, the second spring 83 is in a stretched state, and the arc plate 82 is connected to the folding plate 74 via a moving component 84. When the cylinder 71 drives the folding plate 74 to move, the second inclined surface block 842 will move synchronously with the folding plate 74, and then the second inclined surface block 842 will move out from between the two first inclined surface blocks 841. During this process, the second spring 83 in the stretched state will pull the two arc plates 82 closer to each other, so that the arc plates 82 are gradually separated from the connecting pipe 2, so that the arc plates 82 no longer support and position the connecting pipe 2, and the connecting pipe 2 loses the friction effect of the arc plates 82. Therefore, under the action of the connecting mechanism 7 and the coordinated use of the positioning hole 6 and the insertion rod 78, the connecting pipe 2 and the breaker housing 3 rotate along with the main shaft 5.

[0030] The moving assembly 84 includes a first inclined plane block 841 fixedly connected to the arc plate 82 and a second inclined plane block 842 fixedly connected to the folding plate 74 . The first inclined plane block 841 and the second inclined plane block 842 are in contact with each other.

[0031] Embodiment 3 Based on Example 1, see Figure 8 and Fig. 9 shown.

[0032] The other end of the insert rod 78 is provided with a placement groove 12, in which a third spring 13 is fixedly connected, one end of the third spring 13 is fixedly connected to a connecting plate 14, one side of the connecting plate 14 is fixedly connected to a convex rod 15, and the protective ball 79 is located in the placement groove 12, and the protective ball 79 fits with the convex rod 15. In the process of the insert rod 78 moving into the positioning hole 6, since the protective ball 79 rotates with the main shaft 5, the initial position of the insert rod 78 is: when part of the protective ball 79 is just located in the positioning hole 6 (that is, when the protective ball 79 and the positioning hole 6 are misaligned at a certain angle), when the insert rod 78 rotates, under the action of the placement groove 12, the third spring 13, the connecting plate 14 and the convex rod 15, the protective ball 79 can move into the placement groove 12, which can avoid being hit and causing damage to the protective ball 79, and has the function of protecting the protective ball 79.

[0033] The placement groove 12 is composed of a groove body 121 and a groove body 122 . The groove body 121 is adapted to the protective ball 79 , and the inner diameter of the groove body 122 is smaller than the diameter of the protective ball 79 .

[0034] Embodiment 4 In combination with Embodiment 1, Embodiment 2 and Embodiment 3, see Figure 1-Figure 9 shown.

[0035] When the cylinder 71 is used to drive the insertion rod 78 to move, the protective ball 79 can be provided to reduce the wear between the components. In the process of the insertion rod 78 moving into the positioning hole 6, the reset component 77 can be used to quickly insert the insertion rod 78 into the positioning hole 6, which is convenient to use.

[0036] The working principle of the present invention is as follows: when the connecting pipe 2 and the breaker housing 3 need to be rotated during the drilling process, the rotation speed of the main shaft 5 driven by the driving device 4 is reduced, and then the cylinder 71 is turned on, and then the cylinder 71 drives the folding plate 74 to move, and then drives the ring 75 to move, and then drives the connecting arm 76 to slide on the connecting pipe 2, and then drives the circular plate 73 to slide on the main shaft 5 and the L-shaped plate 721 through the clamping ball 11, thereby driving the insertion rod 78 to approach the connecting pipe 2. When the insertion rod 78 and the positioning hole 6 are not on the same horizontal line, as the cylinder 71 works, the insertion rod 78 drives the protective ball 79 to fit on the connecting pipe 2, and at the same time, The protective ball 79 moves toward the inside of the placement groove 12, and the protective ball 79 applies a thrust to the protruding rod 15. The third spring 13 is under force and is in a compressed state, and the insertion rod 78 slides on the circular plate 73, so that the first spring 772 is under force and is in a compressed state. Under the action of the synchronous operation component 72, the circular plate 73 rotates synchronously with the main shaft 5, thereby driving the insertion rod 78 to rotate. When the insertion rod 78 and the positioning hole 6 are on the same horizontal line, at this time, the first spring 772 and the third spring 13 will both recover, thereby resetting the protective ball 79 and the insertion rod 78. During the resetting process of the insertion rod 78, the insertion rod 78 is inserted into the positioning hole 6. At the same time, when the cylinder 71 drives the folding plate 74 to move, the second inclined surface block 842 will move synchronously with the folding plate 74, and then the second inclined surface block 842 will move out from between the two first inclined surface blocks 841. During this process, the second spring 83 in the stretched state will pull the two arc plates 82 closer to each other, so that the arc plate 82 gradually separates from the connecting pipe 2, so that the arc plate 82 no longer supports and positions the connecting pipe 2, and the connecting pipe 2 loses the friction effect of the arc plate 82. Therefore, under the action of the connecting mechanism 7 and the coordinated use of the positioning hole 6 and the insertion rod 78, the connecting pipe 2 and the breaker housing 3 rotate along with the main shaft 5. In addition, during the movement of the insertion rod 78 into the positioning hole 6, since the protective ball 79 rotates with the main shaft 5, the initial position of the insertion rod 78 is: when part of the protective ball 79 is just located in the positioning hole 6 (that is, when the protective ball 79 and the positioning hole 6 are misaligned at a certain angle), when the insertion rod 78 rotates, under the action of the placement groove 12, the third spring 13, the connecting plate 14 and the protruding rod 15, the protective ball 79 can move into the placement groove 12, thereby avoiding being hit and causing damage to the protective ball 79, thereby protecting the protective ball 79.

[0037] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A pulse jet type cuttings bed breaker, comprising a fixed rod (1) and a connecting pipe (2) arranged outside the fixed rod (1), one side of the connecting pipe (2) being fixedly connected to a breaker housing (3), the fixed rod (1) being provided with a driving device (4), the driving device (4) being provided with a main shaft (5), characterized in that: A positioning hole (6) is provided on one side of the connecting pipe (2); A connecting mechanism (7) is arranged between the fixing rod (1) and the main shaft (5), and the connecting mechanism (7) is used to drive the connecting pipe (2) and the breaker housing (3) to rotate; A positioning mechanism (8) is arranged on the fixing rod (1), and the positioning mechanism (8) is used to support the inner side of the connecting pipe (2) to prevent the connecting pipe (2) from rotating.

2. A pulse jet cuttings bed breaker according to claim 1, characterized in that: A movable groove (9) is formed at one end of the fixed rod (1), a limit rod (10) is fixedly connected in the movable groove (9), and two movable grooves (9) are symmetrically arranged front and back along the driving device (4).

3. A pulse jet cuttings bed breaker according to claim 2, characterized in that: The connecting mechanism (7) comprises a cylinder (71) fixedly connected to a fixed rod (1), and a circular plate (73) movably connected to a main shaft (5) via a synchronous operation component (72). Two cylinders (71) are symmetrically arranged along the driving device (4) in an upper and lower direction. A folding plate (74) is fixedly connected to each of the two cylinders (71). A circular ring (75) is fixedly connected between the two folding plates (74). A connecting arm (76) is fixedly connected to the circular ring (75). The connecting arm (76) is slidably connected to the connecting pipe (2). An insert rod (78) for use with the positioning hole (6) is connected to the circular plate (73) via a reset component (77). The circular plate (73) is movably connected to the connecting arm (76). A protective ball (79) is arranged on the insert rod (78).

4. A pulse jet cuttings bed breaker according to claim 3, characterized in that: The synchronous operation component (72) comprises an L-shaped plate (721) fixedly connected to the main shaft (5), and a first slide groove (722) and a second slide groove (723) respectively penetrating through one side of the circular plate (73); the first slide groove (722) is slidably connected to the main shaft (5), and the second slide groove (723) is slidably connected to the L-shaped plate (721).

5. A pulse jet cuttings bed breaker according to claim 3, characterized in that: The reset assembly (77) comprises a baffle (771) fixedly connected to one end of the insertion rod (78), and a first spring (772) sleeved on the insertion rod (78), wherein the first spring (772) is fixedly connected to the baffle (771) and the circular plate (73), respectively.

6. A pulse jet cuttings bed breaker according to claim 3, characterized in that: A clamping ball (11) is rotatably connected to the inner side of the connecting arm (76), and the clamping ball (11) is in close contact with the circular plate (73).

7. A pulse jet cuttings bed breaker according to claim 3, characterized in that: The positioning mechanism (8) comprises a slide plate (81) slidably connected in the movable groove (9), the slide plate (81) is slidably connected to the limiting rod (10), an arc plate (82) is fixedly connected to the slide plate (81), a second spring (83) is fixedly connected to the arc plate (82), and the arc plate (82) is connected to the folding plate (74) via a moving component (84).

8. A pulse jet cuttings bed breaker according to claim 7, characterized in that: The moving assembly (84) comprises a first inclined surface block (841) fixedly connected to the arc-shaped plate (82), and a second inclined surface block (842) fixedly connected to the folding plate (74), wherein the first inclined surface block (841) and the second inclined surface block (842) are in contact with each other.

9. A pulse jet cuttings bed breaker according to claim 3, characterized in that: The other end of the insertion rod (78) is provided with a placement groove (12), a third spring (13) is fixedly connected in the placement groove (12), one end of the third spring (13) is fixedly connected to a connecting plate (14), one side of the connecting plate (14) is fixedly connected to a protruding rod (15), the protective ball (79) is located in the placement groove (12), and the protective ball (79) and the protruding rod (15) are in close contact with each other.

10. A pulse jet cuttings bed breaker according to claim 9, characterized in that: The placement groove (12) is composed of a groove body 1 (121) and a groove body 2 (122); the groove body 1 (121) is adapted to the protective ball (79); and the internal diameter of the groove body 2 (122) is smaller than the diameter of the protective ball (79).

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