Quick replacement device for air chamber capsule of slurry pump

Abstract

The utility model relates to the technical field of oil and gas well equipment, in particular to a quick replacement device for an air bag capsule of a mud pump, which aims to solve the problems of high labor intensity, long consumed time and safety risk of manual iron wire binding. The device comprises a clamping mechanism and a lead screw assembly. The clamping mechanism is arranged around the lead screw assembly; the lead screw assembly can drive the clamping mechanism to move up and down. The clamping mechanism can clamp the upper opening of the air bag capsule and move upwards to stretch the air bag capsule under the control of the lead screw assembly, and therefore the air bag capsule can be replaced conveniently. The risk of hurting people possibly caused in the process of binding by using iron wires is avoided, and particularly, the problems that the capsule is hard to harden and difficult to fold in cold weather are effectively relieved.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas well equipment technology, and in particular to a quick replacement device for the air capsule of a mud pump. Background Technology

[0002] Mud pumps are crucial drilling equipment in the oil industry, serving as the heart of the drilling rig. During operation, the reciprocating motion of the mud pump piston causes flow rate variations, leading to pressure fluctuations in the discharge pipeline. These fluctuations occur within the pump, surface pipelines, and drill string. Due to the poor compressibility of drilling fluids and the considerable rigidity of pipelines, regulating flow rate changes through the system is difficult. The regular pressure fluctuations with flow rate changes can indeed pose a threat to the system. Installing an air chamber on the pump is precisely to compensate for these fluctuations and eliminate them. Because the air chamber bladder is constantly subjected to alternating stress, and because oil-based mud is frequently used in drilling, causing severe corrosion to rubber components, the air chamber bladder is prone to damage and leaks, requiring frequent replacement. During installation, the bladder is typically folded and bound with wire to reduce its outer diameter. After insertion into the assembly, the wire must be removed, a process that poses a risk of injury. This is especially problematic during winter installation, as the bladder hardens due to the cold, making it even more difficult to fold and compress. The entire operation is labor-intensive, time-consuming, and has low overall efficiency, generally requiring 3-5 people to complete. Utility Model Content

[0003] This invention provides a quick replacement device for the air capsule of a mud pump to alleviate the problems of high labor intensity, long time consumption, and safety risks associated with manual wire binding.

[0004] To alleviate the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] This utility model provides a quick replacement device for the air bag capsule of a mud pump, including a clamping mechanism and a lead screw assembly;

[0006] The clamping mechanism is positioned around the lead screw assembly;

[0007] The lead screw assembly can drive the clamping mechanism to move up and down;

[0008] The clamping mechanism can clamp the upper opening of the air capsule and, under the control of the lead screw assembly, move upward to stretch the air capsule.

[0009] Furthermore,

[0010] The clamping mechanism includes a fixed clamp and a movable clamp;

[0011] The first clamping block of the fixed caliper and the second clamping block of the movable caliper are configured to correspond to each other.

[0012] The first clamping block is directly against the inner wall of the air-filled capsule;

[0013] The second clamping block is positioned directly against the outer wall of the air-filled capsule.

[0014] Furthermore,

[0015] The active caliper includes a first link and a second link;

[0016] One end of the first connecting rod is rotatably connected to the central sleeve of the lead screw assembly and fixedly connected by bolts, and the other end is rotatably connected to the second connecting rod and fixedly connected by bolts;

[0017] The end of the second link furthest from the first link is fixedly connected to the second clamping block.

[0018] Furthermore,

[0019] The movable caliper is located on the upper part of the center sleeve;

[0020] The retaining caliper is located at the lower part of the center sleeve.

[0021] Furthermore,

[0022] Multiple movable calipers are arranged in a ring array along the axis of the central sleeve;

[0023] Multiple fixed clamps are arranged in a ring array along the axis of the central sleeve.

[0024] Furthermore,

[0025] The lead screw assembly includes a lead screw assembly, a nut assembly, and a support assembly;

[0026] The nut assembly is located on the upper part of the central sleeve;

[0027] The lead screw assembly is inserted into the center sleeve and threadedly connected to the nut assembly;

[0028] The support assembly is located at the lower part of the lead screw assembly and is rotatably connected to the lead screw assembly;

[0029] The support assembly is inserted into the positioning seat inside the air bag capsule.

[0030] Furthermore,

[0031] A rotary handwheel is provided on the upper part of the lead screw assembly.

[0032] The beneficial effects of the quick replacement device for the air capsule of the mud pump in this invention are analyzed as follows:

[0033] When using this device, after clamping the air capsule with the clamping mechanism, the screw assembly is used to control the clamping mechanism to move upward and stretch the air capsule, thereby reducing the outer diameter of the air capsule and making it easier to replace the air capsule. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the structure of the quick replacement device for the air capsule of the mud pump provided in this embodiment of the utility model;

[0036] Figure 2 This is a cross-sectional diagram of the fixed caliper;

[0037] Figure 3 This is a top view of the movable caliper.

[0038] icon:

[0039] 110-Fixed caliper; 111-First clamping block; 120-Moving caliper; 121-Second clamping block; 122-First connecting rod; 123-Second connecting rod;

[0040] 200 - Lead screw assembly; 210 - Center sleeve; 220 - Lead screw assembly; 230 - Nut assembly; 240 - Support assembly. Detailed Implementation

[0041] When installing air chamber capsules, the capsule is typically folded and bound with wire to reduce its outer diameter. After insertion into the assembly, the wire must be removed, a process that poses a risk of injury. This is especially problematic in winter when the capsule hardens due to the cold, making it even more difficult to fold and compress. The entire process is labor-intensive, time-consuming, and inefficient, generally requiring 3-5 people to complete.

[0042] In view of this, such as Figures 1 to 3 As shown, this solution provides a quick replacement device for the air capsule of a mud pump to alleviate the above-mentioned problems.

[0043] This device includes a clamping mechanism and a lead screw assembly 200;

[0044] The clamping mechanism is positioned around the lead screw assembly 200;

[0045] The lead screw assembly 200 can drive the clamping mechanism to move up and down;

[0046] The clamping mechanism can clamp the upper opening of the air bag capsule and, under the control of the lead screw assembly 200, move upward to stretch the air bag capsule.

[0047] In this solution, the upper end of the air capsule is locked by a clamping mechanism, and the clamping mechanism is moved up and down by a screw assembly 200 to achieve the compression and folding of the air capsule. This replaces the traditional manual folding with wire binding, greatly reducing the labor intensity and safety risks for workers.

[0048] In this design, the clamping mechanism includes a fixed clamp 110 and a movable clamp 120;

[0049] The first clamping block 111 of the fixed caliper 110 and the second clamping block 121 of the movable caliper 120 are arranged correspondingly to each other;

[0050] The first clamping block 111 is directly opposite the inner wall of the air capsule;

[0051] The second clamping block 121 is directly opposite the outer wall of the air capsule;

[0052] The movable caliper 120 includes a first link 122 and a second link 123;

[0053] One end of the first connecting rod 122 is rotatably connected to the central sleeve 210 of the lead screw assembly 200 and fixedly connected by bolts, and the other end is rotatably connected to the second connecting rod 123 and fixedly connected by bolts;

[0054] The end of the second link 123 away from the first link 122 is fixedly connected to the second clamping block 121;

[0055] The movable caliper 120 is located on the upper part of the central sleeve 210;

[0056] The fixed caliper 110 is located at the lower part of the central sleeve 210.

[0057] Specifically, in the movable caliper 120, the central sleeve 210, the first connecting rod 122, and the second connecting rod 123 are rotatably connected. Before use, the bolts at the corresponding positions need to be loosened, the first clamping block 111 is aligned with the inner wall of the air capsule, and the second clamping block 121 is aligned with the outer wall of the air capsule by rotating the first connecting rod 122 and the second connecting rod 123. Then, the bolts at the corresponding positions are tightened so that the first clamping block 111 and the second clamping block 121 cooperate with each other to clamp the air capsule.

[0058] Since the air capsule is cylindrical, in order to improve the gripping effect of the movable caliper 120 and the fixed caliper 110, multiple movable calipers 120 are arranged in a ring array along the axis of the central sleeve 210.

[0059] Multiple fixed clamps 110 are arranged in a ring array along the axis of the central sleeve 210.

[0060] In this solution, the lead screw assembly 200 includes a lead screw assembly 220, a nut assembly 230, and a support assembly 240;

[0061] Nut assembly 230 is located on the upper part of center sleeve 210;

[0062] The lead screw assembly 220 is inserted into the center sleeve 210 and threadedly connected to the nut assembly 230;

[0063] The support assembly 240 is located at the lower part of the lead screw assembly 220 and is rotatably connected to the lead screw assembly 220;

[0064] The support assembly 240 is inserted into the positioning seat inside the air bag capsule.

[0065] When using this device, the support assembly 240 is inserted into the air capsule and connected to the positioning seat inside the air capsule. After the clamping mechanism clamps the air capsule, the screw assembly 220 is rotated to make the clamping mechanism move upward with the central sleeve 210, stretching the air capsule and reducing the inner diameter of the air capsule for easy replacement.

[0066] In this design, a rotary handwheel is provided on the upper part of the lead screw assembly 220 to facilitate worker operation.

[0067] This solution has at least the following beneficial effects:

[0068] Compared to existing methods that manually bind air capsules with wire to reduce their outer diameter, this new method effectively solves the problems of high labor intensity, high safety risks, and cumbersome operation associated with traditional air capsule installation. Firstly, the combination of a clamping mechanism and a lead screw assembly allows the upper end of the air capsule to be fixed and gradually stretched, replacing the traditional manual binding and folding method. This avoids the potential injury risks associated with wire binding, and is particularly effective in alleviating the problems of capsule hardening and folding difficulties in cold weather. Secondly, the design of this device significantly reduces the labor intensity of workers, improves operational safety and efficiency, and reduces reliance on manpower, allowing a single person to complete most of the operations. Through the control of the lead screw assembly, the clamping mechanism can be precisely adjusted to ensure that the capsule is folded and stretched as expected, thereby accelerating the entire replacement process, shortening operation time, and improving production efficiency. Simultaneously, the device's reasonable structural design and ease of operation allow workers to quickly master the operating skills, further improving the timeliness and reliability of the operation. Therefore, this solution not only improves the efficiency of air capsule replacement but also effectively ensures operational safety and optimizes the entire workflow.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mud pump air bag capsule quick replacement device, characterized in that: it comprises a clamping mechanism and a screw rod assembly (200); the clamping mechanism is arranged around the screw rod assembly (200); the screw rod assembly (200) can drive the clamping mechanism to move up and down; the clamping mechanism can clamp the upper opening of the air bag capsule and move upward to stretch the air bag capsule under the control of the screw rod assembly (200).

2. The mud pump air bag capsule quick replacement device according to claim 1, characterized in that: the clamping mechanism comprises a fixed caliper (110) and a movable caliper (120); the first clamping block (111) of the fixed caliper (110) and the second clamping block (121) of the movable caliper (120) are arranged correspondingly; the first clamping block (111) is opposite to the inner wall of the air bag capsule; and the second clamping block (121) is opposite to the outer wall of the air bag capsule.

3. The mud pump air bag capsule quick replacement device according to claim 2, characterized in that: the movable caliper (120) comprises a first connecting rod (122) and a second connecting rod (123); one end of the first connecting rod (122) is rotatably connected with the center sleeve (210) of the screw rod assembly (200) and fixedly connected by a bolt, and the other end is rotatably connected with the second connecting rod (123) and fixedly connected by a bolt; and the end of the second connecting rod (123) away from the first connecting rod (122) is fixedly connected with the second clamping block (121).

4. The mud pump air bag capsule quick replacement device according to claim 3, characterized in that: the movable caliper (120) is arranged at the upper part of the center sleeve (210); and the fixed caliper (110) is arranged at the lower part of the center sleeve (210).

5. The mud pump air bag capsule quick replacement device according to claim 4, characterized in that: a plurality of movable calipers (120) are arranged in an annular array along the axis of the center sleeve (210); and a plurality of fixed calipers (110) are arranged in an annular array along the axis of the center sleeve (210).

6. The mud pump air bag capsule quick replacement device according to claim 5, characterized in that: the screw rod assembly (200) comprises a screw rod assembly (220), a nut assembly (230) and a support seat assembly (240); the nut assembly (230) is arranged at the upper part of the center sleeve (210); the screw rod assembly (220) is inserted into the center sleeve (210) and threadedly connected with the nut assembly (230); the support seat assembly (240) is arranged at the lower part of the screw rod assembly (220) and rotatably connected with the screw rod assembly (220); and the support seat assembly (240) is inserted into the positioning seat in the air bag capsule.

7. The mud pump air bag capsule quick replacement device according to claim 6, characterized in that: a rotating hand wheel is arranged at the upper part of the screw rod assembly (220). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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