Leakage-proof well flushing device

Abstract

The utility model discloses a leakproof well flushing device which comprises an upper connector, one end of the upper connector is sequentially connected with a connecting pipe, a middle connector, a central pipe and a lower connector, the inner wall of the middle connector abuts against the outer wall of the connecting pipe, the inner wall of the middle connector abuts against the outer wall of the central pipe, and at least one liquid inlet hole is formed in the pipe wall of the connecting pipe in the circumferential direction. A rubber bowl is arranged on the pipe wall of the connecting pipe in a sleeving mode and wraps all the liquid inlet holes, a leather bowl base is arranged on the pipe wall of the connecting pipe, one end of the leather bowl base abuts against the rubber bowl, the other end of the leather bowl base abuts against the middle connector, a rubber cylinder is arranged on the outer wall of the central pipe in a sleeving mode, and an upper rubber cylinder base is fixedly connected between the rubber cylinder and the middle connector; a lower rubber sleeve seat is fixedly connected between the rubber sleeve and the lower joint; when the leakage-proof well flushing device is used for flushing a well, the rubber sleeve can seal and separate an oil pipe and an oil sleeve, and when the rubber bowl expands, the liquid inlet hole is connected with the oil pipe and an oil sleeve annulus, so that the rubber bowl is sealed in a setting manner, and the oil sleeve annulus is sealed in a double manner when flushing liquid enters the oil pipe, and the purpose of protecting an oil layer is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oilfield well washing equipment technical field relates to a leakproof well washer. BACKGROUND

[0002] At present, in order to keep wellbore clean, each oil production plant needs to remove solid substances or thick oil, wax adhered on rod, pipe and pump of oil well, so as to facilitate subsequent oil production operation, and well washing operation has the following effects: 1, reducing the load of horse head of pumping unit, which is beneficial to power saving; 2, after removing wax on pipe rod, the collected water-containing material can be more accurate, and fatigue damage of pumping rod is reduced, and the maintenance-free period of oil well is prolonged; 3, after removing wax on the device below the pump, the oil inlet passage can be increased, the fullness of the oil pump is improved, the oil production is increased, 4, the wax at the double valve of the oil pump can be removed, the double valve switch is flexible, the occurrence probability of pump leakage and pump jamming is reduced, and the maintenance-free period of oil well is effectively prolonged, therefore, well washing operation is very important for keeping normal production of oil well, prolonging the maintenance-free period of oil well and improving system efficiency.

[0003] The common well washing method is that well washing water is punched into the pipe from the casing to form a circulating well washing channel and clean the oil well, but for some oil wells with oil layer leakage, the well washing water punched into the casing enters the oil layer and does not return from the pipe, so the purpose of well washing cannot be achieved, the well washing water entering the oil layer pollutes the oil layer, reduces the oil production, and even kills the oil layer, so that the oil well does not produce oil, and significant economic loss is caused.

[0004] At present, in the conventional well washing process, no well washing device is used or the conventional well washing device is used, and the well without the well washing device will cause part of the well washing fluid to enter the oil layer and pollute the oil layer, reduce the oil production rate and waste a large amount of well washing fluid during the well washing process; and when the conventional well washing device is used, the skin bowl and the inner wall of the casing are worn during the tool lowering process, so that the well washing operation is not sealed tightly, and part of the well washing fluid inevitably leaks into the oil layer. UTILITY MODEL CONTENTS

[0005] The utility model discloses a leakproof well washer, which solves the problem that well washing fluid easily leaks into the oil layer in the prior art.

[0006] The utility model discloses a leakproof well washer, which solves the problem that well washing fluid easily leaks into the oil layer in the prior art.

[0007] The leak-proof well washing device has the characteristics that

[0008] The first sealing ring is arranged between the middle joint and the upper rubber cylinder seat.

[0009] The second sealing ring is arranged between the lower joint and the lower rubber cylinder seat.

[0010] The single flow valve is threadedly connected to the lower joint.

[0011] The axis of the upper joint, the lower joint, the rubber bowl and the central pipe is same.

[0012] The first protrusion is arranged on one side of the upper rubber cylinder seat and is fixed between the rubber cylinder and the middle joint.

[0013] The second protrusion is arranged on one side of the lower rubber cylinder seat and is fixed between the rubber cylinder and the lower joint.

[0014] The first sealing strip is arranged between the central pipe and the upper rubber cylinder seat.

[0015] The second sealing strip is arranged between the central pipe and the lower rubber cylinder seat.

[0016] The leak-proof well washing device has the characteristics that

[0017] Compared with the prior art, the leak-proof well washing device can expand the rubber cylinder under the action of the internal pressure to seal the oil sleeve annulus, so that the well washing fluid cannot enter the oil layer and form an annular space, thereby playing the role of sealing the oil pipe and the oil sleeve; when the rubber bowl expands, the liquid inlet hole can be connected with the oil pipe and the oil sleeve annulus, so that the well washing fluid enters the oil pipe from the oil sleeve annulus, and the rubber bowl expands and seals when the well washing fluid enters from the oil sleeve annulus; when the well washing fluid enters the inside of the oil pipe, the differential pressure of the oil sleeve is generated, the rubber cylinder expands again, the double sealing of the oil sleeve annulus is realized, the sealing effect is ensured, the downward flow of the well washing fluid is prevented, and the purpose of protecting the oil layer is achieved; the single flow valve can ensure that the well washing fluid does not leak and can only be discharged from the upper joint, thereby playing the role of protecting the oil layer during well washing; and the single flow valve is always in an open state under the action of the suction force when the oil well is normally produced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The leak-proof well washing device has the characteristics that

[0019] In the drawing, 1. upper joint, 2. connecting pipe, 3. liquid inlet hole, 4. rubber bowl seat, 5. middle joint, 6. first sealing ring, 7. upper rubber cylinder seat, 8. rubber cylinder, 9. central pipe, 10. lower rubber cylinder seat, 11. second sealing ring, 12. lower joint, 13. rubber bowl, 14. single flow valve, 15. first sealing strip, 16. second sealing strip, 17. first protrusion, 18. second protrusion. DETAILED DESCRIPTION

[0020] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0021] Leakage-proof well washing device, refer to Figure 1 , including upper joint 1, the one end of upper joint 1 is connected with connecting pipe 2, middle joint 5, central pipe 9, lower joint 12 in proper order, a plurality of liquid inlet holes 3 are formed on the wall of connecting pipe 2 along the circumference, rubber bowl 13 is arranged on the wall of connecting pipe 2 and all liquid inlet holes 3 are wrapped by rubber bowl 13, rubber bowl seat 4 is arranged on the wall of connecting pipe 2 and one end of rubber bowl seat 4 is abutted with rubber bowl 13, the other end of rubber bowl seat 4 is abutted with middle joint 5, rubber cylinder 8 is arranged on the outer wall of central pipe 9, upper rubber cylinder seat 7 is fixed between rubber cylinder 8 and middle joint 5, lower rubber cylinder seat 10 is fixed between rubber cylinder 8 and lower joint 12.

[0022] First sealing ring 6 is arranged between middle joint 5 and upper rubber cylinder seat 7, and first sealing ring 6 is used to ensure that middle joint 5 is tightly connected with upper rubber cylinder seat 7, second sealing ring 11 is arranged between lower joint 12 and lower rubber cylinder seat 10, and second sealing ring 11 is used to ensure that lower joint 12 is tightly connected with lower rubber cylinder seat 10, single-flow valve 14 is threadedly connected with lower joint 12, and single-flow valve 14 can ensure that well washing fluid does not leak and can only be discharged from upper joint 1.

[0023] The axes of upper joint 1, lower joint 12, rubber bowl 13 and central pipe 9 are the same, first protrusion 17 is arranged on one side of upper rubber cylinder seat 7, and first protrusion 17 is fixed between rubber cylinder 8 and middle joint 5, second protrusion 18 is arranged on one side of lower rubber cylinder seat 10, and second protrusion 18 is fixed between rubber cylinder 8 and lower joint 12.

[0024] First sealing strip 15 is arranged between central pipe 9 and upper rubber cylinder seat 7, and second sealing strip 16 is arranged between central pipe 9 and lower rubber cylinder seat 10.

[0025] The working principle of the utility model is as follows:

[0026] The leakage-proof well washing device is lowered into the well, and in the lowering process, liquid inlet holes 3 are wrapped by rubber bowl 13, and the oil pipe is located at the position of liquid inlet holes 3 in the leakage-proof well washing device, and rubber bowl 13 separates the oil pipe and the oil jacket annulus;

[0027] When well washing operation is needed, the oil jacket annulus is aligned with rubber bowl 13 and well washing fluid is introduced, and the well washing fluid will expand rubber bowl 13, and at this time, rubber cylinder 8 will seal the oil jacket annulus, so that the well washing fluid cannot enter the lower oil layer;

[0028] When rubber bowl 13 expands, an inner hole gradually increases, so that liquid inlet holes 3 are exposed, and the well washing fluid in the oil jacket annulus enters the oil pipe from liquid inlet holes 3, so that the internal pressure of the leakage-proof well washing device increases, an internal and external pressure difference is formed, rubber cylinder 8 expands, and the oil jacket annulus is further sealed;

[0029] At the same time, the single flow valve 14 can ensure that the washing fluid cannot leak and can only be discharged from the upper joint 1, thereby achieving the purpose of protecting the oil layer during well washing. When the oil well is in normal production, the single flow valve 14 is always in an open state under the action of suction force.

[0030] Embodiment 1:

[0031] The leak-proof well washer comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1. Two liquid inlet holes 3 are formed in the circumferential direction on the wall of the connecting pipe 2. A rubber bowl 13 is sleeved on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3. A rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13. The other end of the rubber bowl seat 4 abuts against the middle joint 5. A rubber cylinder 8 is sleeved on the outer wall of the central pipe 9. An upper rubber cylinder seat 7 is fixed between the rubber cylinder 8 and the middle joint 5. A lower rubber cylinder seat 10 is fixed between the rubber cylinder 8 and the lower joint 12.

[0032] A first sealing ring 6 is arranged between the middle joint 5 and the upper rubber cylinder seat 7. A second sealing ring 11 is arranged between the lower joint 12 and the lower rubber cylinder seat 10. The lower joint 12 is threadedly connected with a single flow valve 14. A first protrusion 17 is arranged on one side of the upper rubber cylinder seat 7 and is fixed between the rubber cylinder 8 and the middle joint 5.

[0033] Embodiment 2:

[0034] The leak-proof well washer comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1. Three liquid inlet holes 3 are formed in the circumferential direction on the wall of the connecting pipe 2. A rubber bowl 13 is sleeved on the wall of the connecting pipe 2 and wraps the three liquid inlet holes 3. A rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13. The other end of the rubber bowl seat 4 abuts against the middle joint 5. A rubber cylinder 8 is sleeved on the outer wall of the central pipe 9. An upper rubber cylinder seat 7 is fixed between the rubber cylinder 8 and the middle joint 5. A lower rubber cylinder seat 10 is fixed between the rubber cylinder 8 and the lower joint 12.

[0035] The lower joint 12 is threadedly connected with a single flow valve 14. The axes of the upper joint 1, the lower joint 12, the rubber bowl 13 and the central pipe 9 are the same. A second protrusion 18 is arranged on one side of the lower rubber cylinder seat 10 and is fixed between the rubber cylinder 8 and the lower joint 12.

[0036] Embodiment 3:

[0037] The anti-leakage well washing device comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1, four liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the four liquid inlet holes 3, a rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13, the other end of the rubber bowl seat 4 abuts against the middle joint 5, a rubber cylinder 8 is arranged on the outer wall of the central pipe 9, an upper rubber cylinder seat 7 is fixedly connected between the rubber cylinder 8 and the middle joint 5, and a lower rubber cylinder seat 10 is fixedly connected between the rubber cylinder 8 and the lower joint 12.

[0038] A first sealing ring 6 is arranged between the middle joint 5 and the upper rubber cylinder seat 7, a second sealing ring 11 is arranged between the lower joint 12 and the lower rubber cylinder seat 10, and a first sealing strip 15 is arranged between the central pipe 9 and the upper rubber cylinder seat 7.

[0039] Embodiment 4

[0040] The anti-leakage well washing device comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1, five liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the five liquid inlet holes 3, a rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13, the other end of the rubber bowl seat 4 abuts against the middle joint 5, a rubber cylinder 8 is arranged on the outer wall of the central pipe 9, an upper rubber cylinder seat 7 is fixedly connected between the rubber cylinder 8 and the middle joint 5, and a lower rubber cylinder seat 10 is fixedly connected between the rubber cylinder 8 and the lower joint 12.

[0041] A first sealing ring 6 is arranged between the middle joint 5 and the upper rubber cylinder seat 7, the axes of the upper joint 1, the lower joint 12, the rubber bowl 13 and the central pipe 9 are the same, and a second sealing strip 16 is arranged between the central pipe 9 and the lower rubber cylinder seat 10.

[0042] Embodiment 5

[0043] The anti-leakage well washing device comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1, two liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3, a rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13, the other end of the rubber bowl seat 4 abuts against the middle joint 5, a rubber cylinder 8 is arranged on the outer wall of the central pipe 9, an upper rubber cylinder seat 7 is fixedly connected between the rubber cylinder 8 and the middle joint 5, and a lower rubber cylinder seat 10 is fixedly connected between the rubber cylinder 8 and the lower joint 12.

[0044] A first sealing ring 6 is arranged between the middle joint 5 and the upper rubber sleeve base 7, a second sealing ring 11 is arranged between the lower joint 12 and the lower rubber sleeve base 10, the axes of the upper joint 1, the lower joint 12, the rubber bowl 13 and the central pipe 9 are the same, a first protrusion 17 is arranged on one side of the upper rubber sleeve base 7, the first protrusion 17 is fixed between the rubber sleeve 8 and the middle joint 5, a second protrusion 18 is arranged on one side of the lower rubber sleeve base 10, the second protrusion 18 is fixed between the rubber sleeve 8 and the lower joint 12, and a first sealing strip 15 is arranged between the central pipe 9 and the upper rubber sleeve base 7.

[0045] Example 6

[0046] The anti-leakage well washer comprises an upper joint 1, the upper joint 1 is sequentially connected with a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12, two liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3, a bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13, the other end of the bowl seat 4 abuts against the middle joint 5, a rubber sleeve 8 is arranged on the outer wall of the central pipe 9, an upper rubber sleeve base 7 is fixed between the rubber sleeve 8 and the middle joint 5, and a lower rubber sleeve base 10 is fixed between the rubber sleeve 8 and the lower joint 12.

[0047] A first sealing ring 6 is arranged between the middle joint 5 and the upper rubber sleeve base 7, a second sealing ring 11 is arranged between the lower joint 12 and the lower rubber sleeve base 10, the axes of the upper joint 1, the lower joint 12, the rubber bowl 13 and the central pipe 9 are the same, a first protrusion 17 is arranged on one side of the upper rubber sleeve base 7, the first protrusion 17 is fixed between the rubber sleeve 8 and the middle joint 5, a second protrusion 18 is arranged on one side of the lower rubber sleeve base 10, the second protrusion 18 is fixed between the rubber sleeve 8 and the lower joint 12, and a first sealing strip 15 is arranged between the central pipe 9 and the upper rubber sleeve base 7.

[0048] Example 7

[0049] The anti-leakage well washer comprises an upper joint 1, the upper joint 1 is sequentially connected with a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12, two liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3, a bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against one end of the rubber bowl 13, the other end of the bowl seat 4 abuts against the middle joint 5, a rubber sleeve 8 is arranged on the outer wall of the central pipe 9, an upper rubber sleeve base 7 is fixed between the rubber sleeve 8 and the middle joint 5, and a lower rubber sleeve base 10 is fixed between the rubber sleeve 8 and the lower joint 12.

[0050] A second sealing ring 11 is arranged between the lower joint 12 and the lower rubber sleeve base 10, the axes of the upper joint 1, the lower joint 12, the rubber bowl 13 and the central pipe 9 are the same, a second protrusion 18 is arranged on one side of the lower rubber sleeve base 10, the second protrusion 18 is fixed between the rubber sleeve 8 and the lower joint 12, and a second sealing strip 16 is arranged between the central pipe 9 and the lower rubber sleeve base 10.

[0051] Embodiment 8:

[0052] The leak-proof well washer comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1, two liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3, a rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against the rubber bowl 13 at one end, and abuts against the middle joint 5 at the other end, a rubber cylinder 8 is arranged on the outer wall of the central pipe 9, an upper rubber cylinder seat 7 is fixed between the rubber cylinder 8 and the middle joint 5, and a lower rubber cylinder seat 10 is fixed between the rubber cylinder 8 and the lower joint 12.

[0053] A first sealing ring 6 is arranged between the middle joint 5 and the upper rubber cylinder seat 7, a single-way valve 14 is threadedly connected to the lower joint 12, a first protrusion 17 is arranged on one side of the upper rubber cylinder seat 7, the first protrusion 17 is fixed between the rubber cylinder 8 and the middle joint 5, and a first sealing strip 15 is arranged between the central pipe 9 and the upper rubber cylinder seat 7.

[0054] Embodiment 9:

[0055] The leak-proof well washer comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1, two liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3, a rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against the rubber bowl 13 at one end, and abuts against the middle joint 5 at the other end, a rubber cylinder 8 is arranged on the outer wall of the central pipe 9, an upper rubber cylinder seat 7 is fixed between the rubber cylinder 8 and the middle joint 5, and a lower rubber cylinder seat 10 is fixed between the rubber cylinder 8 and the lower joint 12.

[0056] A second sealing ring 11 is arranged between the lower joint 12 and the lower rubber cylinder seat 10, and a second sealing strip 16 is arranged between the central pipe 9 and the lower rubber cylinder seat 10.

[0057] Embodiment 10:

[0058] The leak-proof well washer comprises an upper joint 1, a connecting pipe 2, a middle joint 5, a central pipe 9 and a lower joint 12 connected in sequence at one end of the upper joint 1, two liquid inlet holes 3 are arranged on the wall of the connecting pipe 2 in the circumferential direction, a rubber bowl 13 is arranged on the wall of the connecting pipe 2 and wraps the two liquid inlet holes 3, a rubber bowl seat 4 is arranged on the wall of the connecting pipe 2 and abuts against the rubber bowl 13 at one end, and abuts against the middle joint 5 at the other end, a rubber cylinder 8 is arranged on the outer wall of the central pipe 9, an upper rubber cylinder seat 7 is fixed between the rubber cylinder 8 and the middle joint 5, and a lower rubber cylinder seat 10 is fixed between the rubber cylinder 8 and the lower joint 12.

[0059] The lower joint 12 is screwed with a one-way valve 14, and the central tube 9 is provided with a first sealing strip 15 between the upper rubber cylinder seat 7.

Claims

1. Leakproof well washer, characterized in that The utility model provides a water inlet pipe, including upper joint (1), one end of upper joint (1) is connected with connecting pipe (2), middle joint (5), center pipe (9), lower joint (12) in proper order, a plurality of liquid inlet holes (3) are set up on the wall of connecting pipe (2) along the circumference direction, rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is sleeved on the wall of connecting pipe (2) and the rubber bowl (13) is wrapped all liquid inlet holes (3), and rubber bowl (13) is 2. The leakproof washdown tool of claim 1, wherein, ​ 3. The leakproof washdown tool of claim 1, wherein, ​ 4. The leakproof washdown tool of claim 1, wherein, ​ 5. The leakproof washdown tool of any of claims 1-4, wherein, ​ 6. The leakproof washdown tool of any of claims 1-4, wherein, ​ 7. The leakproof washdown tool of any of claims 1-4, wherein, ​ 8. The leak-free washdown tool of any of claims 1-4, wherein, ​ 9. The leakproof washdown tool of any of claims 1-4, wherein, ​

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