CN215486553U - Mud pump cylinder sleeve for well drilling and mud pump containing same - Google Patents

Abstract

The utility model provides a mud pump cylinder sleeve for well drilling and a mud pump containing the same, and the mud pump cylinder sleeve comprises an outer cylinder sleeve and an inner cylinder sleeve sleeved in the outer cylinder sleeve, wherein the bottom end of the outer cylinder sleeve is provided with an annular baffle table; the pressing cover is also included, and a through hole is formed in the center of the pressing cover; a stop shoulder is formed on the outer wall of the top of the outer cylinder sleeve in a circular cutting mode, an external thread is arranged on the outer wall of the outer cylinder sleeve above the stop shoulder, and an internal thread matched with the external thread is arranged inside the gland; the bottom end of the gland is positioned at the shoulder; the bottom end of the gland is circumferentially connected with a ring wall, and the outer wall of the outer cylinder sleeve is provided with a notch for inserting the ring wall; a plurality of countersunk head screw holes are formed in the annular wall; the outer wall of the outer cylinder sleeve is also provided with an annular groove; the position of the annular groove is arranged corresponding to the position of the countersunk head screw hole; the countersunk head screw hole is internally in threaded connection with a countersunk head screw, and one end of the countersunk head screw is inserted into the annular groove. The inner cylinder sleeve and the outer cylinder sleeve cannot be separated, and the device has the advantages of low failure rate, low wear rate and simple and convenient installation and maintenance.

Description

Mud pump cylinder sleeve for well drilling and mud pump containing same

Technical Field

The utility model belongs to the technical field of petroleum drilling engineering, and particularly relates to a mud pump cylinder sleeve for drilling and a mud pump containing the same.

Background

Among the parts of the slurry pump, the cylinder sleeve is one of the parts which are worn quickly and replaced frequently, and the main worn part is the cylinder sleeve in the cylinder sleeve. The traditional bimetal cylinder sleeve is characterized in that an inner cylinder sleeve of the cylinder sleeve is hot-installed in an outer cylinder sleeve of the cylinder sleeve, and belongs to interference fit, because the inner layer metal and the outer layer metal have different thermal expansion coefficients, and the inner cylinder sleeve metal has high hardness and large brittleness, the inner lining is easy to break due to over-tight fit in the assembling process; the assembly is too loose, the two layers are easy to separate and cannot bear high pressure; after the inner and outer cylinder sleeves with moderate interference magnitude are used for a long time in a high-temperature and high-pressure environment, the fact that the sleeves are not detached is difficult to guarantee. Secondly, the outer cylinder liner of cylinder liner is not fragile in the use generally, and in case the inner cylinder liner takes place wearing and tearing of certain degree or puncture just needs to be changed, and current inner cylinder liner and outer cylinder liner assembly methods cause the inner cylinder liner to be difficult to take out, if adopt the method of pounding heavily, probably injure the outer cylinder liner of cylinder liner, so this just leads to the inner cylinder liner in case wearing and tearing just need change inner cylinder liner and outer cylinder liner are whole, and maintenance cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the mud pump cylinder sleeve for drilling and the mud pump containing the same are provided.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a mud pump cylinder sleeve for well drilling, which comprises an outer cylinder sleeve and an inner cylinder sleeve sleeved in the outer cylinder sleeve, wherein the bottom end of the outer cylinder sleeve is provided with an annular baffle table; the pressing cover is also included, and a through hole is formed in the center of the pressing cover; a blocking shoulder is formed on the outer wall of the top of the outer cylinder sleeve in a circular cutting mode, an external thread is arranged on the outer wall of the outer cylinder sleeve above the blocking shoulder, and an internal thread matched with the external thread is arranged inside the gland; the bottom end of the gland is positioned at the blocking shoulder; the bottom end of the gland is circumferentially connected with a ring wall, and the outer wall of the outer cylinder sleeve is provided with a notch for inserting the ring wall; a plurality of countersunk head screw holes are formed in the annular wall; the outer wall of the outer cylinder sleeve is also provided with an annular groove; the position of the annular groove corresponds to the position of the countersunk head screw hole; the countersunk head screw hole is internally and threadedly connected with a countersunk head screw, and one end of the countersunk head screw is inserted into the annular groove.

The annular wall and the gland are integrally molded, and the annular wall is flush with the outer wall of the gland; the wall thickness of the annular wall is less than the wall thickness of the gland.

The inner diameter of the baffle table is larger than the inner diameter of the inner cylinder sleeve and smaller than the outer diameter of the inner cylinder sleeve.

The inner wall of the outer cylinder sleeve extends downwards from the top to be provided with a guide groove; the outer wall of the inner cylinder sleeve is connected with a guide rail matched with the guide groove; when assembled, the guide rails are inserted into the guide grooves and slide along the guide grooves.

The guide way is provided with 2, and the symmetry sets up.

The outer cylinder sleeve is made of carbon steel, and the inner cylinder sleeve is made of high-chromium iron or ceramic.

The aperture of the through hole is equal to the inner diameter of the inner cylinder sleeve.

The utility model also provides a slurry pump which comprises the slurry pump cylinder sleeve for well drilling.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the inner cylinder sleeve and the outer cylinder sleeve cannot be separated by arranging the baffle table and the gland, so that the safety coefficient of the cylinder sleeve is increased, the hidden danger in use is eliminated, and the service life is prolonged; the gland and the outer cylinder sleeve adopt a threaded connection mode, the assembly is simple, the operation is convenient, the bottom of the gland is connected with the annular wall, the annular wall is provided with the countersunk head screw hole, the annular groove matched with the countersunk head screw hole is formed in the outer cylinder sleeve, and thus when the countersunk head screw is screwed down on the countersunk head screw hole, one end of the countersunk head screw can be inserted into the annular groove, the positioning effect on the gland can be further achieved, and the looseness of threads of the gland is effectively prevented.

2. After the inner cylinder sleeve is worn, the inner cylinder sleeve can be conveniently detached and replaced due to the convenient detachment of the pressing cover, the outer cylinder sleeve can be continuously used, the maintainability is obviously improved, the problem that the inner cylinder sleeve and the outer cylinder sleeve are required to be completely replaced once the inner cylinder sleeve is worn and the maintenance cost is high is effectively solved.

3. The guide groove is formed in the inner wall of the outer cylinder sleeve, the guide rail is arranged on the outer wall of the inner cylinder sleeve, and the guide rail can slide along the guide groove, so that the guide rail can play a role in guiding during assembly; on the other hand, the rotary displacement between the inner cylinder sleeve and the outer cylinder sleeve can be prevented, so that the rotary cylinder has the advantages of low failure rate, low wear rate and simple and convenient installation and maintenance.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of the assembly structure of the present invention.

Fig. 2 is an enlarged schematic view of the structure of the B region.

Fig. 3 is a perspective view of the gland.

FIG. 4 is a schematic diagram of the outer liner configuration.

Fig. 5 is a partial enlarged view of the annular groove structure of fig. 4.

FIG. 6 is a schematic diagram of the inner liner configuration.

Fig. 7 is a sectional view taken along the direction a-a.

Description of reference numerals:

1, an outer cylinder sleeve; 2, an inner cylinder sleeve; 3, pressing a cover; 4, a circular wall; 5 countersunk head screw holes; 6, countersunk head screws; 7, an annular groove; 8, a guide rail; 9 a guide groove; 10, blocking shoulders; 11 notches; 12 annular grooves; and 13, blocking the table.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Example one

As shown in fig. 1-7, the mud pump cylinder sleeve for drilling provided by the embodiment includes an outer cylinder sleeve 1 and an inner cylinder sleeve 2 sleeved in the outer cylinder sleeve 1, wherein an annular blocking platform 13 is arranged at the bottom end of the outer cylinder sleeve 1, and the blocking platform 13 is used for limiting the bottom end of the inner cylinder sleeve 2 to play roles of stopping and preventing falling; the whole device also comprises a gland 3, wherein a through hole is formed in the center of the gland 3, and the aperture of the through hole can be equal to the inner diameter of the inner cylinder sleeve 2; the gland 3 is detachable, and the specific structure thereof is as follows: a stop shoulder 10 is formed on the outer wall of the top of the outer cylinder sleeve 1 in a circular cutting mode, and external threads are arranged on the outer wall of the outer cylinder sleeve 1 above the stop shoulder 10 to form a thread section; an internal thread matched with the external thread is arranged in the gland 3; when the gland 3 is screwed down, the bottom end of the gland 3 is positioned at the stop shoulder 10, and the top of the gland 3 is used for limiting the top end of the inner cylinder sleeve 2. By arranging the baffle table 13 and the gland 3, the inner cylinder sleeve 2 and the outer cylinder sleeve 1 cannot be separated, the safety coefficient of the cylinder sleeve is increased, the hidden danger in use is eliminated, and the service life is prolonged; the gland 3 and the outer cylinder sleeve 1 are in threaded connection, so that the assembly is simple and the operation is convenient.

Because gland 3 and outer cylinder liner 1 adopt threaded connection's mode, when using, probably there is the screw thread not hard up, the not tight problem of gland 3 pressure, in order to avoid this problem, this designer has made further improvement, and concrete institutional advancement is: the bottom end of the gland 3 is connected with the annular wall 4 along the circumferential direction, a notch 11 for inserting the annular wall 4 is formed in the outer wall of the outer cylinder sleeve 1, the notch 11 corresponds to and is matched with the annular wall 4, and the notch 11 can be used for inserting the annular wall 4; a plurality of countersunk head screw holes 5 are formed in the annular wall 4; the outer wall of the outer cylinder sleeve 1 is also provided with an annular groove 12; the position of the annular groove 12 corresponds to the position of the countersunk head screw hole 5; threaded connection has countersunk screw 6 in countersunk head screw hole 5, after gland 3 screws up, screw in countersunk screw hole 5 countersunk screw 6, and make countersunk screw 6's one end insert in annular groove 12, can play certain effect that prevents that gland 3 is not hard up like this, and adopt the setting mode of annular groove 12, need be better than the setting mode of single hole a lot, if single hole, then after gland 3 screws up, this hole can not align with countersunk screw hole 5 certainly, the unable male problem of countersunk screw 6 may appear, but this drawback of solution that annular groove 12 just can be fine, so say, adopt the setting mode of annular groove 12, the convenience of operation has been improved.

The outer cylinder sleeve 1 is made of carbon steel, and the inner cylinder sleeve 2 is made of high-chromium iron or ceramic.

The annular wall 4 and the gland 3 can be integrally formed and manufactured or can be independently welded, and the annular wall 4 is flush with the outer wall of the gland 3, looks natural and is relatively beautiful; the wall thickness of the annular wall 4 may be smaller than the wall thickness of the gland 3.

The internal diameter that keeps off platform 13 is greater than the internal diameter of interior cylinder liner 2 and is less than the external diameter of interior cylinder liner 2, like this, can conveniently carry out the top jar dismantlement to interior cylinder liner 2.

According to the above description, after the inner cylinder sleeve 2 is worn, the inner cylinder sleeve 2 can be conveniently detached and replaced due to the fact that the pressing cover 3 is convenient to detach, the outer cylinder sleeve 1 can be continuously used, maintainability is remarkably improved, the problem that once the inner cylinder sleeve 2 is worn, the inner cylinder sleeve 2 and the outer cylinder sleeve 1 need to be completely replaced, and maintenance cost is high is effectively solved.

Example two

With continued reference to fig. 1-7, on the basis of the first embodiment, in the cylinder liner for the mud pump for drilling according to the present embodiment, the inner wall of the outer cylinder liner 1 extends downward from the top to form a guide groove 9; the outer wall of the inner cylinder sleeve 2 is connected with a guide rail 8 matched with the guide groove 9; when assembling, the guide rail 8 is inserted into the guide groove 9 and slides along the guide groove 9; the guide slot 9 is provided with 2, and the symmetry sets up. The guide groove 9 is formed in the inner wall of the outer cylinder sleeve 1, the guide rail 8 is arranged on the outer wall of the inner cylinder sleeve 2, and the guide rail 8 can slide along the guide groove 9, so that the guide function can be achieved during assembly; on the other hand, the relative rotation displacement between the inner cylinder sleeve 2 and the outer cylinder sleeve 1 can be prevented, so that the cylinder sleeve has the advantages of low failure rate, low wear rate and simple and convenient installation and maintenance.

EXAMPLE III

The embodiment also provides a mud pump which comprises the mud pump cylinder sleeve for drilling in the embodiment I or the embodiment II.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A mud pump cylinder sleeve for well drilling comprises an outer cylinder sleeve and an inner cylinder sleeve sleeved in the outer cylinder sleeve, and is characterized in that an annular baffle table is arranged at the bottom end of the outer cylinder sleeve; the pressing cover is also included, and a through hole is formed in the center of the pressing cover; a blocking shoulder is formed on the outer wall of the top of the outer cylinder sleeve in a circular cutting mode, an external thread is arranged on the outer wall of the outer cylinder sleeve above the blocking shoulder, and an internal thread matched with the external thread is arranged inside the gland; the bottom end of the gland is positioned at the blocking shoulder; the bottom end of the gland is circumferentially connected with a ring wall, and the outer wall of the outer cylinder sleeve is provided with a notch for inserting the ring wall; a plurality of countersunk head screw holes are formed in the annular wall; the outer wall of the outer cylinder sleeve is also provided with an annular groove; the position of the annular groove corresponds to the position of the countersunk head screw hole; the countersunk head screw hole is internally and threadedly connected with a countersunk head screw, and one end of the countersunk head screw is inserted into the annular groove.

2. The cylinder liner of claim 1, wherein the annular wall and the gland are integrally formed, and the annular wall is flush with the outer wall of the gland; the wall thickness of the annular wall is less than the wall thickness of the gland.

3. The liner for a mud pump for drilling a well as recited in claim 1, wherein the inner diameter of said land is greater than the inner diameter of said inner liner and less than the outer diameter of the inner liner.

4. The cylinder sleeve of the mud pump for drilling as claimed in claim 1, wherein the inner wall of the outer cylinder sleeve extends downwards from the top to form a guide groove; the outer wall of the inner cylinder sleeve is connected with a guide rail matched with the guide groove; when assembled, the guide rails are inserted into the guide grooves and slide along the guide grooves.

5. The cylinder liner of claim 4, wherein the guide grooves are symmetrically arranged with 2 guide grooves.

6. The cylinder liner of claim 1, wherein the outer liner material is carbon steel and the inner liner material is high chromium iron or ceramic.

7. A mud pump cylinder liner for drilling a well according to claim 1, wherein the bore diameter of said bore is equal to the internal diameter of said inner cylinder liner.

8. A mud pump comprising a liner for a mud pump for drilling according to any one of claims 1 to 7.

Images