Slurry umbrella upgrading device

Abstract

The utility model provides a mud umbrella upgrading device, which belongs to the technical field of mud umbrellas, and comprises a mud umbrella main body, an oil seal sleeve, a cover body and a mud guard ring, the oil seal sleeve is embedded in a central through hole of the mud umbrella main body, the cover body is sleeved above the outer side surface of the oil seal sleeve, an external thread is arranged above the outer side surface of the oil seal sleeve, and the mud guard ring is sleeved above the outer side surface of the oil seal sleeve. An internal thread is formed in the inner side surface of the mud blocking ring and is in threaded connection with the external thread of the oil sealing sleeve; the oil seal sleeve and the mud blocking ring are arranged, the mud blocking ring is sealed through the threads after being upgraded through the threads, mud can be prevented from flowing in without an asbestos pad, and the mud can be effectively blocked for a long time without maintenance in long-period use.

Description

Technical Field

[0001] The utility model relates to the technical field of mud umbrellas, and particularly relates to an upgrading device for a mud umbrella. Background Technique

[0002] The top drive is a top drive drilling system, which is a mechanical device located under the big hook. It provides a clockwise driving torque for the drill string to carry out the drilling process. During the use of the top drive, mud is likely to flow into the gearbox of the top drive. The mud causes significant and irreversible damage to the gears, bearings, and lubricating oil channels in the gearbox. The cleaning process even requires completely disassembling the gearbox and even replacing important gear bearings.

[0003] The reason is that during the long-term operation of the mud umbrella of the top drive, it is extremely easy to have seal aging (only one seal) and mechanical wear. In addition, this position is not easy to maintain, reducing the protection ability of the mud umbrella.

[0004] In the prior art, an asbestos gasket is used for sealing between the mud retaining ring and the oil seal sleeve in the mud umbrella of the top drive. The aging of the asbestos gasket will form a mud penetration channel. Moreover, the mud retaining ring and the oil seal sleeve are fixed with 4 bolts. If the compression is insufficient or a single bolt is loose, a mud penetration channel will be formed, resulting in the problem of mud penetration. In order to improve the protection ability and long-term effectiveness of the mud umbrella, the mechanical structure of the mud umbrella is designed and upgraded. Therefore, an upgrading device for the mud umbrella is designed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an upgrading device for a mud umbrella to solve the problems existing in the above background technique.

[0006] The technical problem to be solved by the utility model is to provide an upgrading device for a mud umbrella to solve the problem that in the prior art, mud is likely to flow into the gearbox of the top drive, and the mud causes significant and irreversible damage to the gears, bearings, and lubricating oil channels in the gearbox. The cleaning process even requires completely disassembling the gearbox and even replacing important gear bearings.

[0007] The utility model provides an upgrading device for a mud umbrella, which includes a mud umbrella main body, an oil seal sleeve, a cover body, and a mud retaining ring. An oil seal sleeve is embedded in the central through hole of the mud umbrella main body. A cover body is sleeved on the upper part of the outer surface of the oil seal sleeve. External threads are provided on the upper part of the outer surface of the oil seal sleeve. Internal threads are provided on the inner surface of the mud retaining ring. The internal threads are connected to the external threads of the oil seal sleeve.

[0008] Preferably, the inner side of the mud retaining ring is in a stepped shape with a larger diameter at the lower part and a smaller diameter at the upper part.

[0009] Preferably, the diameter of the upper part of the inner side of the mud guard ring is equal to the inner diameter of the oil seal sleeve, the diameter of the center of the inner side of the mud guard ring is equal to the outer diameter of the oil seal sleeve, and the diameter of the lower part of the mud guard ring is equal to the outer diameter of the cover body.

[0010] Preferably, when the mud guard ring is threadedly connected to the oil seal sleeve, the top of the oil seal sleeve is closely attached to the mud guard ring, the lower part of the oil seal sleeve is sleeved on the outer side of the cover body, and the bottom of the mud guard ring is closely attached to the upper surface of the mud umbrella main body.

[0011] Preferably, annular grooves are formed in the center and above the inner surface of the cover body, and sealing rings are embedded in the annular grooves.

[0012] Preferably, the inner surface of the sealing ring is in interference fit with the inner surface of the oil seal sleeve.

[0013] Preferably, a plurality of threaded holes are formed in the lower part of the side surface of the mud guard ring, and a plurality of locking bolts are threadedly connected in the threaded holes, and the locking bolts are threadedly connected to the side surface of the cover body.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] 1. By arranging the oil seal sleeve and the mud guard ring, after the thread of the mud guard ring is upgraded, thread sealing is adopted, and asbestos gaskets are not required to prevent mud from flowing in, and mud can be effectively blocked for a long time without maintenance during long-term use.

[0016] 2. By arranging two sealing rings, the sealing effect of the cover body on the oil seal sleeve is enhanced, preventing slight mud from penetrating the sealing rings, accelerating the wear of the sealing rings, and preventing a mud penetration channel from being formed between the sealing rings and the oil seal sleeve, thus ensuring the sealing performance.

[0017] 3. By forming a plurality of threaded holes in the lower part of the side surface of the mud guard ring and threadedly connecting a plurality of locking bolts in the threaded holes, and the locking bolts are threadedly connected to the side surface of the cover body, the stability of the mud guard ring after installation is increased. Description of the Drawings

[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0019] Figure 1 It is a schematic cross-sectional structure diagram of a mud umbrella in the prior art of the present utility model.

[0020] Figure 2 For the present utility model Figure 1Schematic diagram of the enlarged structure at location A.

[0021] Figure 3 Schematic diagram of the sectional structure of the mud umbrella of the present utility model.

[0022] Figure 4 For the present utility model Figure 3 Schematic diagram of the enlarged structure at location B.

[0023] Figure 5 For the present utility model Figure 3 Schematic diagram of the enlarged structure at location C.

[0024] [Reference numerals]

[0025] 1. Mud umbrella main body; 2. Oil seal sleeve; 201. External thread; 3. Cover body; 4. Mud guard ring; 401. Internal thread; 5. Sealing ring; 6. Asbestos gasket; 7. Bolt. Detailed implementation manners

[0026] Embodiment:

[0027] As Figures 1 - 5 shown, the embodiment of the present utility model provides a mud umbrella upgrading device, including a mud umbrella main body 1, an oil seal sleeve 2, a cover body 3 and a mud guard ring 4. An oil seal sleeve 2 is embedded in the central through hole of the mud umbrella main body 1. A cover body 3 is sleeved above the outer surface of the oil seal sleeve 2. An external thread 201 is provided above the outer surface of the oil seal sleeve 2. An internal thread 401 is provided on the inner surface of the mud guard ring 4. The internal thread 401 is connected to the external thread 201 of the oil seal sleeve 2.

[0028] By providing the oil seal sleeve 2 and the mud guard ring 4, after the mud guard ring 4 is upgraded by threads and thread sealing is adopted, it can prevent mud from flowing in without an asbestos gasket, and can effectively block mud for a long time without maintenance during long-term use.

[0029] In this embodiment, the inner side of the mud guard ring 4 is in a stepped shape with a larger diameter at the bottom and a smaller diameter at the top, which is convenient for the mud guard ring 4 to be sleeved on the oil seal sleeve 2 and the cover body 3.

[0030] In this embodiment, the diameter of the upper part of the inner side of the mud guard ring 4 is equal to the inner diameter of the oil seal sleeve 2, the central diameter of the inner side of the mud guard ring 4 is equal to the outer diameter of the oil seal sleeve 2, and the diameter of the lower part of the mud guard ring 4 is equal to the outer diameter of the cover body 3.

[0031] In this embodiment, when the mud guard ring 4 is threadedly connected to the oil seal sleeve 2, the top of the oil seal sleeve 2 is closely attached to the mud guard ring 4, the lower part of the oil seal sleeve 2 is sleeved on the outside of the cover body 3, and the bottom of the mud guard ring 4 is closely attached to the upper surface of the mud umbrella main body 1, ensuring the tightness of the contact between the mud guard ring 4 and the oil seal sleeve 2 and the cover body 3 and ensuring the sealing effect.

[0032] In this embodiment, annular grooves are provided in the center and above the inner surface of the cover 3, and sealing rings 5 are embedded in the annular grooves. By providing two sealing rings 5 in the cover 3, double sealing is achieved, and the sealing effect is better.

[0033] In this embodiment, the inner surface of the sealing ring 5 is in interference fit with the inner surface of the oil seal sleeve 2 to ensure close contact between the sealing ring 5 and the oil seal sleeve 2 and ensure the sealing performance.

[0034] By providing two sealing rings 5, the sealing effect of the cover 3 on the oil seal sleeve 2 is enhanced, preventing slight mud from penetrating the sealing ring 5, accelerating the wear of the sealing ring 5, and preventing the formation of a mud penetration channel between the sealing ring 5 and the oil seal sleeve 2, thus ensuring the sealing performance.

[0035] In this embodiment, a plurality of threaded holes are provided in the lower side of the side surface of the mud guard ring 4, and a plurality of locking bolts are threadedly connected in the threaded holes. The locking bolts are threadedly connected to the side surface of the cover 3, increasing the stability of the mud guard ring 4 after installation.

[0036] Refer to Figure 1 and Figure 2 As shown, in the prior art, an asbestos gasket 6 is used for sealing between the mud guard ring 4 and the oil seal sleeve 2 on the mud umbrella body 1. Aging of the asbestos gasket 6 will form a mud penetration channel. In the original structure, the mud guard ring and the oil seal sleeve are fixed with 4 bolts. If the pressing is insufficient or a single bolt 7 becomes loose, a mud penetration channel will be formed.

[0037] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent.

Claims

1. Mud umbrella upgrade device, characterized by: The mud umbrella comprises a mud umbrella body (1), an oil seal sleeve (2), a cover body (3) and a mud retaining ring (4); the oil seal sleeve (2) is embedded in the central through hole of the mud umbrella body (1); the cover body (3) is sleeved on the outer surface of the oil seal sleeve (2); an outer thread (201) is provided on the outer surface of the oil seal sleeve (2); an inner thread (401) is provided on the inner surface of the mud retaining ring (4); and the inner thread (401) is connected to the outer thread (201) of the oil seal sleeve (2).

2. The mud umbrella upgrading device according to claim 1, characterized in that: The inner side of the mud guard ring (4) is in a stepped shape with a larger diameter at the bottom and a smaller diameter at the top.

3. The mud umbrella upgrading device according to claim 2, characterized in that: The inner upper diameter of the mud guard ring (4) is equal to the inner diameter of the oil seal sleeve (2), the inner central diameter of the mud guard ring (4) is equal to the outer diameter of the oil seal sleeve (2), and the lower diameter of the mud guard ring (4) is equal to the outer diameter of the cover body (3).

4. The mud umbrella upgrading device according to claim 3 is characterized in that: When the mud guard ring (4) is threadedly connected to the oil seal sleeve (2), the top of the oil seal sleeve (2) is tightly attached to the mud guard ring (4), the bottom of the oil seal sleeve (2) is sleeved on the outside of the cover body (3), and the bottom of the mud guard ring (4) is tightly attached to the upper surface of the mud umbrella body (1).

5. The mud umbrella upgrading device according to claim 4, characterized in that: An annular groove is provided at the center and the top of the inner surface of the cover body (3), and a sealing ring (5) is embedded in the annular groove.

6. The mud umbrella upgrading device according to claim 5, characterized in that: The inner surface of the sealing ring (5) is interference fit with the inner surface of the oil seal sleeve (2).

7. The mud umbrella upgrading device according to claim 6, characterized in that: A plurality of threaded holes are provided below the side surface of the mud guard ring (4), and a plurality of locking bolts are threadedly connected in the threaded holes, and the locking bolts are threadedly connected to the side surface of the cover body (3).

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