Drilling pump cylinder sleeve taking-out tool

Abstract

The utility model discloses a tool for taking out a cylinder sleeve of a drilling pump, which solves the technical problems that the cylinder sleeve is difficult to separate and is easy to damage when being taken out. The device comprises an enclasping part used for enclasping the cylinder sleeve; the positioning ring is used for tightly sleeving the end part of the cylinder sleeve; one end of the chain part is connected with the holding part, and the other end of the chain part is connected with the positioning ring; and the traction part is arranged on the positioning ring and is used for being connected with a shaft pin of a central pull rod of the slurry pump. The cylinder sleeve can be quickly and stably separated, so that the cylinder sleeve can be safely and smoothly taken out, the risk of damage when the cylinder sleeve is taken out is reduced, the operation is simple and convenient, the cylinder sleeve taking efficiency is high, and the safety is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of mud pumps, and in particular relates to a drilling pump cylinder sleeve removal tool. Background Art

[0002] The oil mechanical mud pump is an important part of the drilling equipment, used to transport mud or water and other flushing fluids into the borehole during the drilling process. The mud pump changes the volume of the cylinder sleeve periodically through the reciprocating motion of the piston in the cylinder sleeve, and finally converts the original mechanical energy such as electrical energy into the pressure energy of the transported liquid to achieve the operation. Due to factors such as high pressure, high temperature and normal wear, the cylinder sleeve needs to be replaced in time after it is damaged and leaked to prevent the equipment failure from expanding.

[0003] The cylinder liner of the currently used P-type mud pump has a raised ring in the middle, which is fixed in the mud pump cylinder liner seat by threads or clamps. Ceramic cylinder liners are mostly used on site. Ceramic cylinder liners have good wear resistance and can be used for a long time. Cylinder liners that are not disassembled for a long time will form adhesion between the cylinder liner body and the cylinder liner seat due to corrosion, pressure expansion, etc., which is extremely difficult to disengage.

[0004] At present, the cylinder liner is disengaged by means of pry bars and wedges, but the manual force is limited and the effect is not obvious. Moreover, the use of wedges to dismantle the cylinder liner can easily cause the cylinder liner to be stuck or the cylinder liner seat to be damaged due to uneven force on the cylinder liner body. In severe cases, the wedges may bounce up and cause personal injury, which needs to be improved. Utility Model Content

[0005] In order to solve all or part of the above problems, the purpose of the utility model is to provide a drilling pump cylinder sleeve removal tool, which can quickly and stably disengage the cylinder sleeve so that the cylinder sleeve can be safely and smoothly removed. The operation is simple and convenient, the cylinder sleeve removal efficiency is high, and the safety is good.

[0006] The utility model provides a drilling pump cylinder sleeve removal tool, comprising:

[0007] The clamping part is used to clamp on the cylinder sleeve;

[0008] A positioning ring, used to be tightly fitted on the end of the cylinder liner;

[0009] A chain portion, one end of which is connected to the holding portion and the other end of which is connected to the positioning ring;

[0010] The traction part is arranged on the positioning ring and is used to be connected with the shaft pin of the central pull rod of the mud pump.

[0011] Optionally, the clamping part includes two semicircular clamping chucks, the opening sides of the two clamping chucks are arranged opposite to each other, one end of the two clamping chucks is hinged by a hinge part, and the other end is provided with a limiting part, and the limiting part is used to fix the two clamping chucks so that the two clamping chucks are clamped on the cylinder liner together.

[0012] Optionally, the limiting portion includes a receiving ear block, a limiting ear block, a limiting screw and a butterfly nut, the receiving ear block is fixed on one of the clamping chucks, and the limiting ear block is fixed on the other clamping chuck, one side of the receiving ear block and the limiting ear block are respectively provided with through openings, the through opening of the receiving ear block is rotatably connected with a rotating shaft pin, the limiting screw is fixedly connected to the rotating shaft pin, and the limiting screw can be inserted into the through opening of the limiting ear block, the butterfly nut is threadedly sleeved on the limiting screw, and the butterfly nut can be tightly pressed against the limiting ear block after being tightened.

[0013] Optionally, two clamping slips are respectively fixedly connected to the inner side walls of the two clamping chucks, and the convex ring on the cylinder sleeve can be clamped between the corresponding two clamping slips.

[0014] Optionally, the clamping slip on the side away from the positioning ring protrudes 15-25 mm more than the corresponding other clamping slip to provide a stronger fulcrum.

[0015] Optionally, the chain portion includes multiple pairs of latch ear blocks, one of each pair of latch ear blocks is fixed on the positioning ring and the other is fixed on the clamping portion, a stainless steel ring chain is arranged between each pair of latch ear blocks, a limit pin is arranged on each latch ear block, and the limit pin passes through the stainless steel ring at the end of the corresponding ring chain.

[0016] Optionally, a plurality of pairs of the latch lug blocks are arranged at equal intervals along the circumference of the positioning ring, so that a plurality of the circular ring chains are evenly spaced around the four-axis positions of the cylinder sleeve.

[0017] Optionally, the limiting latch is detachably connected to the corresponding latch ear block.

[0018] Optionally, the traction part includes a traction head and a plurality of traction ribs, one end of the plurality of traction ribs are respectively fixedly connected to the positioning ring, and the other ends are close to each other and respectively fixedly connected to the traction head. A traction hole is provided on the traction head for the axle pin of the mud pump center pull rod to pass through.

[0019] Optionally, a plurality of the traction ribs are arranged at equal intervals along the circumference of the positioning ring, and a vertical projection of the traction head is located at the center of the positioning ring.

[0020] It can be seen from the above technical solution that the drilling pump cylinder sleeve removal tool provided by the utility model has the following advantages:

[0021] The device can enable the cylinder liner to be disengaged quickly and stably so as to remove the cylinder liner safely and smoothly, thereby reducing the risk of damage to the cylinder liner when it is removed. The device is simple and convenient to operate, has high efficiency in removing the cylinder liner, and is safe.

[0022] Other features and advantages of the present invention will be described in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0024] Figure 1 This is a schematic diagram of the overall structure of the removal tool in the embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the removal tool in the embodiment of the utility model;

[0026] Figure 3 A top view of a removal tool in an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the use status of the removal tool in the embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1. Clamping part; 11. Clamping chuck; 12. Articulated part; 13. Limiting part; 131. Receiving ear block; 132. Limiting ear block; 133. Limiting screw; 134. Butterfly nut; 135. Rotating shaft pin; 14. Clamping slip; 2. Positioning ring; 3. Chain part; 31. Pin ear block; 32. Ring chain; 33. Limiting pin; 4. Traction part; 41. Traction head; 42. Traction rib plate; 43. Traction hole. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other arbitrarily without conflict.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4The utility model is shown in an embodiment of the utility model, in which a drilling pump cylinder sleeve removal tool is disclosed, including a clamping part 1, a positioning ring 2, a chain part 3 and a traction part 4. The clamping part 1 is used to clamp on the cylinder sleeve, and the inner diameter of the positioning ring 2 matches the outer diameter of the end of the cylinder sleeve, so that the positioning ring 2 can be tightly sleeved on the end of the cylinder sleeve. One end of the chain part 3 is connected to the clamping part 1, and the other end is connected to the positioning ring 2. The traction part 4 is arranged on the positioning ring 2, and the traction part 4 is used to connect with the shaft pin of the center pull rod of the mud pump.

[0032] like Figure 4 As shown, when the cylinder liner needs to be taken out, the end of the cylinder liner is inserted into the positioning ring 2, and then the cylinder liner is clamped by the clamping part 1. Subsequently, the shaft pin of the central pull rod of the mud pump is connected to the traction part 4, and the positioning ring 2 is pulled by the central pull rod of the mud pump to drive the chain part 3 and the clamping part 1 to move, and at this time, the clamping part 1 can take out the cylinder liner.

[0033] The drilling pump cylinder sleeve removal tool in this embodiment can make the cylinder sleeve disengage quickly and stably, so as to remove the cylinder sleeve safely and smoothly, and can also reduce the risk of damage when removing the cylinder sleeve. At the same time, the tool is simple and convenient to operate, has high efficiency in removing the cylinder sleeve, and is safe.

[0034] In one embodiment, Figure 1 , Figure 2 , Figure 3 As shown, the clamping part 1 includes two semicircular clamping chucks 11, and the opening sides of the two clamping chucks 11 are arranged opposite to each other. At the same time, one end of the two clamping chucks 11 is hinged by a hinge part 12, and the other end is provided with a limiting part 13, and the limiting part 13 is used to fix the two clamping chucks 11 so that the two clamping chucks 11 are clamped on the cylinder sleeve together.

[0035] In this embodiment, the two clamping chucks 11 are hinged by a hinge structure, so that the clamping part 1 can have a larger opening in a limited space, so that the removal tool can be installed on the cylinder sleeve more safely and quickly. Of course, in other embodiments, other forms of hinge structures can be used, which are not listed here.

[0036] In one embodiment, Figure 1 , Figure 2 As shown, the inner side walls of the two clamping chucks 11 are respectively fixedly connected with two clamping slips 14, and the convex ring on the cylinder liner can be inserted between the corresponding two clamping slips 14 to improve the connection stability between the clamping chuck 11 and the cylinder liner, and at the same time increase the pulling force on the cylinder liner.

[0037] In one embodiment, Figure 1 , Figure 2As shown, the holding slip 14 on the side away from the positioning ring 2 protrudes 15-25 mm more than the corresponding other holding slip 14. In this embodiment, the holding slip 14 protrudes 20 mm to provide a stronger fulcrum to avoid damaging the cylinder liner.

[0038] In one embodiment, Figure 2 , Figure 3 As shown, the limiting portion 13 includes a receiving ear block 131, a limiting ear block 132, a limiting screw 133 and a butterfly nut 134. The receiving ear block 131 is fixed on one of the clamping chucks 11, and the limiting ear block 132 is fixed on the other clamping chuck 11, and one side of the receiving ear block 131 and the limiting ear block 132 are respectively provided with a through opening.

[0039] A rotating shaft pin 135 is rotatably connected to the through opening of the receiving ear block 131, and the limiting screw 133 is fixedly connected to the rotating shaft pin 135, and the limiting screw 133 can be inserted into the through opening of the limiting ear block 132, and the butterfly nut 134 is threadedly sleeved on the limiting screw 133, and the butterfly nut 134 can be tightened against the limiting ear block 132 after being tightened, thereby realizing a quick connection between the two clamping clavas 14.

[0040] In one embodiment, Figure 1 , Figure 2 As shown, the chain part 3 includes a plurality of pairs of latch lugs 31, one of each pair of latch lugs 31 is fixed on the positioning ring 2, and the other is fixed on the clamping part 1. At the same time, a stainless steel ring chain 32 is arranged between each pair of latch lugs 31, and a limit latch 33 is arranged on each latch lug 31, and the limit latch 33 passes through the stainless steel ring at the end of the corresponding ring chain 32, so that the positioning ring 2 and the clamping part 1 are connected as a whole.

[0041] In one embodiment, Figure 1 , Figure 2 As shown, multiple pairs of latch lugs 31 are arranged at equal intervals along the circumference of the positioning ring 2, so that multiple ring chains 32 are evenly spaced around the four-axis positions of the cylinder sleeve, so as to limit the cylinder sleeve to only bear the tensile force in the horizontal direction, thereby avoiding the problem of the cylinder sleeve being stuck due to unstable force on the cylinder sleeve. In this embodiment, four ring chains 32 are provided. Of course, in other embodiments, five, six or other numbers of ring chains 32 can also be provided.

[0042] In one embodiment, Figure 1 , Figure 2 As shown, the limit pin 33 is detachably connected to the corresponding pin lug block 31 so that the ring chain 32 can be replaced. In this embodiment, the limit pin 33 is threadedly connected to the pin lug block 31. In other embodiments, other detachable connection methods such as snap connection can also be adopted.

[0043] In one embodiment, Figure 1 , Figure 2 As shown, the traction part 4 includes a traction head 41 and a plurality of traction ribs 42, one end of each of the traction ribs 42 is fixedly connected to the positioning ring 2, and the other end is close to each other and fixedly connected to the traction head 41. At the same time, a traction hole 43 is provided on the traction head 41 for the shaft pin of the central pull rod of the mud pump to pass through.

[0044] In one embodiment, Figure 1 , Figure 2 As shown, a plurality of traction ribs 42 are arranged at equal intervals along the circumference of the positioning ring 2, and the vertical projection of the traction head 41 is located at the center of the positioning ring 2 to ensure that the cylinder liner withstands the horizontal pulling force so that the cylinder liner can be removed smoothly.

[0045] As can be seen from the above, the removal tool can fit the outer dimensions of the cylinder liner, and is fixed to the convex ring limiting position of the cylinder liner body by two clamping chucks 11, and the positioning ring 2 is sleeved on the end of the cylinder liner to keep the tension in the horizontal direction to prevent the cylinder liner from being stuck due to deflection. At the same time, the traction part 4 is connected to the axle pin of the center pull rod of the mud pump, and the power is obtained by manually rotating the mud pump, so that the center pull rod moves and the tension is transmitted to the position of the clamping chuck 11 by the circular chain 32, and finally the cylinder liner is safely removed. Not only that, the large gear ratio at the power end of the mud pump can greatly reduce the labor intensity of personnel, and the speed of the cylinder liner extraction process is controllable, and safety is guaranteed. At the same time, the removal tool uses the original mud accessories to connect the operation, which is simple and convenient, and the cylinder liner removal efficiency is high and the safety is good.

[0046] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present invention should have the common meanings understood by technicians in the field to which the present invention belongs.

[0047] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A drilling pump cylinder liner removal tool, characterized in that: include: A clamping portion (1), used for clamping on the cylinder sleeve; A positioning ring (2) is used to be tightly fitted on the end of the cylinder sleeve; A chain part (3), one end of which is connected to the holding part (1) and the other end of which is connected to the positioning ring (2); The traction part (4) is arranged on the positioning ring (2) and is used to be connected with the shaft pin of the central pull rod of the mud pump.

2. The drilling pump cylinder liner removal tool according to claim 1, characterized in that: The clamping portion (1) comprises two semicircular clamping chucks (11), the openings of the two clamping chucks (11) are arranged opposite to each other, one end of the two clamping chucks (11) is hinged by a hinge portion (12), and the other end is provided with a limiting portion (13), and the limiting portion (13) is used to fix the two clamping chucks (11) so that the two clamping chucks (11) are clamped on the cylinder sleeve together.

3. The drilling pump cylinder liner removal tool according to claim 2, characterized in that: The limiting portion (13) comprises a receiving ear block (131), a limiting ear block (132), a limiting screw (133) and a butterfly nut (134); the receiving ear block (131) is fixed to one of the clamping chucks (11), and the limiting ear block (132) is fixed to the other clamping chuck (11); one side of the receiving ear block (131) and the limiting ear block (132) are respectively provided with a through opening; A rotating shaft pin (135) is rotatably connected to the through opening of the block (131), the limiting screw (133) is fixedly connected to the rotating shaft pin (135), and the limiting screw (133) can be inserted into the through opening of the limiting ear block (132), the butterfly nut (134) is threadedly sleeved on the limiting screw (133), and the butterfly nut (134) can be tightly pressed against the limiting ear block (132) after being tightened.

4. The drilling pump cylinder liner removal tool according to claim 2, characterized in that: The inner side walls of the two clamping chucks (11) are respectively fixedly connected with two clamping slips (14), and the convex ring on the cylinder sleeve can be clamped between the corresponding two clamping slips (14).

5. The drilling pump cylinder liner removal tool according to claim 4, characterized in that: The holding slip (14) on the side away from the positioning ring (2) protrudes 15-25 mm more than the corresponding other holding slip (14) to provide a stronger point of force.

6. The drilling pump cylinder liner removal tool according to claim 1, characterized in that: The chain portion (3) comprises a plurality of pairs of latch lugs (31), one of each pair of latch lugs (31) being fixed on the positioning ring (2) and the other being fixed on the clamping portion (1), a stainless steel ring chain (32) being arranged between each pair of latch lugs (31), and a limit latch (33) being arranged on each of the latch lugs (31), and the limit latch (33) passing through a stainless steel ring at the end of the corresponding ring chain (32).

7. The drilling pump cylinder liner removal tool according to claim 6, characterized in that: A plurality of pairs of the latch lug blocks (31) are arranged at equal intervals along the circumference of the positioning ring (2), so that a plurality of the circular ring chains (32) are arranged at equal intervals around the four-axis positions of the cylinder sleeve.

8. The drilling pump cylinder liner removal tool according to claim 6, characterized in that: The limiting latch (33) is detachably connected to the corresponding latch ear block (31).

9. The drilling pump cylinder liner removal tool according to claim 1, characterized in that: The traction part (4) comprises a traction head (41) and a plurality of traction ribs (42), one end of each of the traction ribs (42) is fixedly connected to the positioning ring (2), and the other ends are close to each other and fixedly connected to the traction head (41), and a traction hole (43) is provided on the traction head (41) for the shaft pin of the mud pump center pull rod to pass through.

10. The drilling pump cylinder liner removal tool according to claim 9, characterized in that: The plurality of traction ribs (42) are arranged at equal intervals along the circumference of the positioning ring (2), and the vertical projection of the traction head (41) is located at the center of the positioning ring (2).

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