Sealing structure for mud pump of drilling machine

Abstract

The utility model belongs to the technical field of drilling machine mud pump equipment, and particularly relates to a drilling machine mud pump sealing structure which comprises a mud pump shell, an end sealing cover is installed at the opening end of the mud pump shell, a through pipe is connected to the center of the end sealing cover in a penetrating mode, and a limiting assembly is connected between the mud pump shell and the end sealing cover. A sealing part is connected between the slurry pump shell and the end sealing cover; the sealing component comprises a sealing insertion ring fixedly connected to the end opening face of the end sealing cover and a sealing insertion groove formed in the end opening face of the slurry pump shell, the sealing insertion ring is fixedly connected to the end opening face of the end sealing cover, the sealing insertion groove is fixedly connected to the end opening face of the slurry pump shell, and the limiting component comprises an L-shaped insertion plate fixedly installed on the periphery of the end sealing cover, and a welding block is fixedly welded to the periphery of the slurry pump shell. The design size of the sealing insertion ring is matched with the forming size of the sealing insertion groove. By means of the precise matching relation, in the working process of the slurry pump, slurry cannot leak out of a gap between the end sealing cover and the slurry pump shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling rig mud pump equipment technical field especially relates to a drilling rig mud pump sealing structure. BACKGROUND

[0002] In the process of oil exploration and exploitation, drilling rig mud pump as one of the key equipment, bears the important role of conveying mud to cool the drill bit, carry the cuttings and maintain the stability of the wellbore. However, in the working process of mud pump, the leakage of mud has been a difficult problem to be solved. The traditional mud pump sealing structure often has problems such as insufficient sealing performance, easy to wear, complex installation, which not only affects the working efficiency of mud pump, but also may cause equipment damage and production safety accidents.

[0003] The traditional mud pump sealing structure usually adopts simple rubber ring or metal sealing ring for sealing, these sealing elements are easy to age and deform under long-term high pressure and high temperature mud flushing, thus leading to the decline of sealing performance. The leakage of mud not only causes waste of resources, but also may cause pollution to the surrounding environment, and increases the maintenance cost of equipment.

[0004] The traditional mud pump sealing structure often needs complex positioning and fastening steps in the installation process, which not only increases the installation difficulty, but also easily introduces error in the installation process, affecting the sealing effect. In addition, some sealing structures are also difficult to disassemble and replace, which brings inconvenience to the maintenance and maintenance of the equipment, therefore, we provide a drilling rig mud pump sealing structure. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a drilling rig mud pump sealing structure to more exactly solve the problems proposed in the background art.

[0006] The utility model realizes the following technical schemes:

[0007] The utility model provides a drilling rig mud pump sealing structure, including mud pump shell, the opening end of mud pump shell is installed with end cover, the center of end cover is connected with through pipe, the mud pump shell and end cover are connected with limiting component between;

[0008] The mud pump shell and end cover are connected with sealing component between;

[0009] The limiting component includes L type plug -in board fixedly installed at the periphery of end cover, the periphery of mud pump shell is fixedly welded with welding block, the end surface of L type plug -in board is equipped with sliding groove, the inner wall of sliding groove is connected with sliding block, the surface of sliding block is fixedly connected with arc limiting block, and the limiting is formed after L type plug -in board passes through welding block.

[0010] The reciprocating mechanism is connected between the sliding groove and the sliding block.

[0011] Further, the reciprocating mechanism comprises a strip-shaped groove formed in the inner wall of the sliding groove, a partition block fixedly installed at the inner wall of the strip-shaped groove, a fixed rod fixedly connected between the end wall of the strip-shaped groove and the end surface of the partition block, a spring sleeved on the periphery of the fixed rod, and a moving sleeve block slidably sleeved on the periphery of the fixed rod.

[0012] Further, the sealing component comprises a sealing insert ring fixedly connected to the port surface of the end cover and a sealing insert groove formed in the port surface of the mud pump shell.

[0013] Further, the moving sleeve block is slidably connected at the inner wall of the strip-shaped groove, and the opposite surfaces of the two moving sleeve blocks are fixedly connected to the two side surfaces of the sliding block.

[0014] Further, one end of the spring is fixedly connected to one end surface of the partition block, and the other end of the spring is fixedly connected to one end surface of the moving sleeve block.

[0015] Further, the sealing insert ring is inserted at the inner wall of the sealing insert groove, and the design size of the sealing insert ring is adapted to the formation size of the sealing insert groove.

[0016] The utility model discloses the beneficial effects of:

[0017] The utility model discloses a sealing component, including fixedly connected in the sealing insert ring of end cover port surface and the sealing insert groove of mud pump shell port surface that forms, and the design size of sealing insert ring is adapted to the formation size of sealing insert groove, this accurate cooperation makes mud pump in the working process, and mud cannot leak from the gap between end cover and mud pump shell, in addition, the close insertion of sealing insert ring and sealing insert groove also effectively prevents the outside impurity from entering the mud pump inside, further guarantees the normal operation of mud pump.

[0018] The utility model discloses a limiting assembly and reciprocating mechanism, realize the quick stable connection of end cover and mud pump shell, limiting assembly includes the L type of fixedly installed in the periphery of end cover and fixedly welded in the periphery of mud pump shell Welded block, when end cover and mud pump shell install, L type insert board will pass through welded block, and reciprocating mechanism is through the cooperation of spring and moving sleeve block, makes the sliding block when sliding in strip-shaped groove can drive arc -shaped limiting piece and pop out, and with the inner wall of mud pump shell forms the limit. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the three -dimensional schematic view of one embodiment of the utility model;

[0020] Figure 2 For an embodiment of the utility model a first view of structure split of end seal cover and slurry pump shell,

[0021] Figure 3 For an embodiment of the utility model a second view of structure split of end seal cover and slurry pump shell,

[0022] Figure 4 For an embodiment of the utility model Figure 3 The structure enlarged view of A place in.

[0023] Figure: 1, slurry pump shell;2, end seal cover;3, through pipe;4, L type plug-in board;5, welding block;6, sliding groove;7, sliding block;8, arc limit block;9, strip recess;10, spacer;11, fixed rod;12, spring;13, moving sleeve block;14, sealing insert ring;15, sealing insert slot. Specific implementation

[0024] In order to more clearly and completely illustrate the technical scheme of the utility model, the utility model is further described below in conjunction with the drawings.

[0025] Embodiment

[0026] As Figures 1-4 Indicated, the utility model discloses a drilling rig slurry pump sealing structure, mainly by slurry pump shell 1, end seal cover 2, through pipe 3, limit component and sealing part composition. Slurry pump shell 1 is the main body structure of pump, and its open end is used to install end seal cover 2. The center of end seal cover 2 is connected with through pipe 3, and is used for the flow of slurry;L type plug-in board 4 is fixedly installed on the periphery of end seal cover 2, and welding block 5 is fixedly welded on the periphery of slurry pump shell 1. When end seal cover 2 is installed with slurry pump shell 1, L type plug-in board 4 will pass through welding block 5. Sliding groove 6 is formed in the end surface of L type plug-in board 4, and sliding block 7 is slidably connected in sliding groove 6. The surface of sliding block 7 is fixedly connected with arc limit block 8. When L type plug-in board 4 completely passes through welding block 5, arc limit block 8 will be ejected under the action of spring 12, subsequent description, and forms limit with the inner wall of slurry pump shell 1, thereby ensuring the stable connection between end seal cover 2 and slurry pump shell 1. Sealing insert ring 14 is fixedly connected on the port surface of end seal cover 2, and sealing insert slot 15 that is matched with sealing insert ring 14 is formed on the port surface of slurry pump shell 1. When end seal cover 2 is installed in place with slurry pump shell 1, sealing insert ring 14 will be closely inserted in sealing insert slot 15, thereby realizing good sealing effect. Through the design of the above structure, the drilling rig slurry pump sealing structure can realize the stable connection and good sealing between end seal cover 2 and slurry pump shell 1, effectively prevent slurry leakage, improve the working efficiency and reliability of slurry pump.

[0027] Further, the reciprocating mechanism is a key part of the limiting assembly of the application, which is used to realize the automatic limiting between the L-shaped plug-in plate 4 and the mud pump shell 1. The reciprocating mechanism mainly consists of a strip-shaped groove 9, a partition block 10, a fixed rod 11, a spring 12 and a moving sleeve block 13; the strip-shaped groove 9 is arranged on the inner side wall of the sliding groove 6, and the partition block 10 is fixedly installed inside the strip-shaped groove 9. The fixed rod 11 is fixedly connected between the end wall of the strip-shaped groove 9 and the end surface of the partition block 10. The spring 12 is peripherally sleeved on the fixed rod 11, and one end of the spring 12 is fixedly connected to one end surface of the partition block 10. The moving sleeve block 13 is slidingly sleeved on the periphery of the fixed rod 11, and one end surface of the moving sleeve block 13 is fixedly connected to the other end of the spring 12. At the same time, the opposite surfaces of the two moving sleeve blocks 13 are fixedly connected to the two side surfaces of the sliding block 7; when the L-shaped plug-in plate 4 passes through the welded block 5, the sliding block 7 will slide in the strip-shaped groove 9 and compress the spring 12. When the L-shaped plug-in plate 4 completely passes through the welded block 5, the spring 12 will restore to its original state, push the moving sleeve block 13 and the sliding block 7 to move outward, so that the arc-shaped limiting block 8 is popped out and forms a limiting with the inner wall of the mud pump shell 1. The design of the reciprocating mechanism makes the installation between the end cover 2 and the mud pump shell 1 more convenient and fast, and the limiting effect is more reliable.

[0028] Further, the sealing component mainly consists of a sealing plug ring 14 and a sealing plug groove 15. The sealing plug ring 14 is fixedly connected to the port surface of the end cover 2, and the sealing plug groove 15 is arranged on the port surface of the mud pump shell 1. The design size of the sealing plug ring 14 and the opening size of the sealing plug groove 15 are mutually matched, which ensures that the sealing plug ring 14 can be tightly plugged into the sealing plug groove 15 when the end cover 2 and the mud pump shell 1 are installed in place, achieving good sealing effect.

[0029] Further, the moving sleeve block 13 is slidingly connected to the inner wall of the strip-shaped groove 9, and the opposite surfaces of the two moving sleeve blocks 13 are fixedly connected to the two side surfaces of the sliding block 7. This connection mode enables the sliding block 7 to drive the two moving sleeve blocks 13 to slide on the fixed rod 11 when the sliding block 7 slides in the strip-shaped groove 9, thereby compressing or stretching the spring 12.

[0030] Further, one end of the spring 12 is fixedly connected to one end surface of the partition block 10, and the other end is fixedly connected to one end surface of the moving sleeve block 13. This connection mode enables the spring 12 to generate elastic force when the sliding block 7 slides, pushing the moving sleeve block 13 and the sliding block 7 to move outward, thereby realizing the automatic popping out and limiting of the arc-shaped limiting block 8.

[0031] Further, the sealing plug ring 14 is plugged into the inner wall of the sealing plug groove 15, and the design size of the sealing plug ring 14 and the opening size of the sealing plug groove 15 are mutually matched. This matching relationship ensures that the sealing plug ring 14 can be tightly plugged into the sealing plug groove 15, achieving good sealing effect.

[0032] Finally, it should be noted that the foregoing merely describes examples of the basic concept, and that alterations and modifications to such examples can readily occur to those skilled in the art. Such alterations and modifications incorporating the spirit and principles of the disclosure can be viewed as being within the scope of the disclosure. Furthermore, unless specifically stated otherwise, discussions regarding processes, sequences, compositions of matter, groupings, and other methods are not limited to the specific narratives, examples, and / or examples described herein, but include any procedural method that can be implemented independently of other processes described herein. Those skilled in the art will readily recognize many modifications and variations of this disclosure, which are intended to be within the scope of this disclosure. Accordingly, the application is to be viewed as being limited only by the scope of the claims and equivalents thereof.

[0033] Finally, it should be noted that the foregoing merely describes examples of the basic concept, and that alterations and modifications to such examples can readily occur to those skilled in the art. Such alterations and modifications incorporating the spirit and principles of the disclosure can be viewed as being within the scope of the disclosure. Furthermore, unless specifically stated otherwise, discussions regarding processes, sequences, compositions of matter, groupings, and other methods are not limited to the specific narratives, examples, and / or examples described herein, but include any procedural method that can be implemented independently of other processes described herein. Those skilled in the art will readily recognize many modifications and variations of this disclosure, which are intended to be within the scope of this disclosure. Accordingly, the application is to be viewed as being limited only by the scope of the claims and equivalents thereof.

Claims

1. A drilling rig mud pump seal arrangement comprising a mud pump housing (1) characterised by, The opening end of the mud pump shell (1) is provided with an end cover (2), a through pipe (3) is connected at the center of the end cover (2), and a limiting assembly is connected between the mud pump shell (1) and the end cover (2); A sealing component is connected between the mud pump shell (1) and the end cover (2); The limiting assembly comprises an L-shaped insertion plate (4) fixedly installed at the periphery of the end cover (2), a welding block (5) fixedly welded at the periphery of the mud pump shell (1), a sliding groove (6) formed in the end surface of the L-shaped insertion plate (4), a sliding block (7) slidably connected to the inner wall of the sliding groove (6), and an arc-shaped limiting block (8) fixedly connected to the surface of the sliding block (7) for limiting the L-shaped insertion plate (4) after passing through the welding block (5). A reciprocating mechanism is connected between the sliding groove (6) and the sliding block (7).

2. A drilling rig mud pump seal structure as defined in claim 1, wherein, The reciprocating mechanism comprises a strip-shaped groove (9) formed in the inner wall of the sliding groove (6), a partition block (10) fixedly installed at the inner wall of the strip-shaped groove (9), a fixed rod (11) fixedly connected between the end wall of the strip-shaped groove (9) and the end surface of the partition block (10), a spring (12) sleeved on the periphery of the fixed rod (11), and a moving sleeve block (13) slidably sleeved on the periphery of the fixed rod (11).

3. A drilling rig mud pump seal structure as defined in claim 1, wherein, The sealing component comprises a sealing insertion ring (14) fixedly connected to the port surface of the end cover (2) and a sealing insertion groove (15) formed in the port surface of the mud pump shell (1).

4. A drilling rig mud pump seal structure as defined in claim 2, wherein, The moving sleeve block (13) is slidably connected to the inner wall of the strip-shaped groove (9), and the opposite surfaces of the two moving sleeve blocks (13) are fixedly connected to the two side surfaces of the sliding block (7).

5. A drilling rig mud pump seal structure as defined in claim 2 wherein, One end of the spring (12) is fixedly connected to one end surface of the partition block (10), and the other end of the spring (12) is fixedly connected to one end surface of the moving sleeve block (13).

6. A drilling rig mud pump seal assembly as defined in claim 3 wherein, The sealing insertion ring (14) is inserted into the inner wall of the sealing insertion groove (15), and the design size of the sealing insertion ring (14) is adapted to the formation size of the sealing insertion groove (15).

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