CN217130320U

CN217130320U - Sealing structure of core holder plug

Info

Publication number: CN217130320U
Application number: CN202221100219.5U
Authority: CN
Inventors: 王铭伟
Original assignee: Sichuan Xianran Petroleum Technology Co ltd
Current assignee: Sichuan Xianran Petroleum Technology Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-05
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses a seal structure of rock core holder end cap relates to rock core holder technical field. The utility model discloses a: a barrel; the two blocking cylinders are respectively sleeved at two ends of the cylinder body in a threaded manner, and first sealing rings are respectively arranged between the two blocking cylinders and the two ends of the cylinder body; two positioning cylinders. The utility model discloses establish the bottom at the barrel with one of them stifled a thread cover, insert the activity of a rubber section of thick bamboo and establish to the barrel and make the one end of a rubber section of thick bamboo insert and establish on a location section of thick bamboo, place the rock core in a rubber section of thick bamboo, another stifled section of thick bamboo is established to the screw thread cover again, and make another location section of thick bamboo on stifled a section of thick bamboo peg graft with a rubber section of thick bamboo, the end cap is contradicted to the rock core again in the wrench movement, carry out the centre gripping to the rock core under the cooperation of end cap and lower end cap, through two first sealing washers and two second sealing washers, in order to ensure the holistic leakproofness of holder, detect the back to the rock core simultaneously, not hard up two stifled sections of thick bamboo, can be quick dismantle the separation with the holistic part of holder, so that wash.

Description

Sealing structure of core holder plug

Technical Field

The utility model relates to a rock core holder technical field, concretely relates to seal structure of rock core holder end cap.

Background

The core holder is an appliance used for holding, protecting and sealing a cylindrical surface or an end surface (generally an end surface with a reserved fluid inlet and outlet) when the seepage characteristic of a rock sample is measured in a laboratory or a displacement test is carried out, is an indispensable important auxiliary component in the development of experimental instruments and devices, is used for holding a core sample by plugs at two ends and is used for testing the gas or liquid permeability of the core, and particularly has extremely strict requirements on the sealing property of a sealing structure due to the rigor requirements on the environment or experimental analysis conditions in a high-temperature high-pressure long core holder; if the leakproofness of rock core holder is not good or sealed effect is not good when the experiment, will directly influence the effect and the result of whole experiment, current rock core holder seal structure is complicated, and it is comparatively inconvenient to install or unload, and the rock receives the influence of high temperature high pressure liquid infiltration, and the rubble sand grain of rock self can remain in the holder, and is comparatively inconvenient when clearing up remaining rubble sand grain.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: for solving the problem in the above-mentioned background, the utility model provides a seal structure of rock core holder end cap.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

a seal structure for a core holder plug, comprising: a barrel; the two blocking cylinders are respectively sleeved at two ends of the cylinder body in a threaded manner, and first sealing rings are respectively arranged between the two blocking cylinders and the two ends of the cylinder body; the two positioning cylinders are respectively arranged on the opposite sides of the two blocking cylinders; the rubber barrel is arranged in the barrel body, two ends of the rubber barrel are respectively in plug-in fit with the two positioning barrels, second sealing rings are respectively arranged between two ends of the rubber barrel and the two blocking barrels, and an annular pressure cavity is formed between the outer surface of the rubber barrel and the inner surface of the barrel body; the lower plug is fixedly arranged on the plug cylinder positioned below, the end part of the lower plug is movably inserted into the rubber tube, and a flow channel is formed in the lower plug in a penetrating manner; the upper plug is threaded through the plug barrel positioned above, the end part of the upper plug is movably inserted into the rubber barrel, and a flow channel is formed in the upper plug in a penetrating manner; and the through hole is arranged on the cylinder in a penetrating way and is communicated with the annular pressure cavity.

Furthermore, be located the top install an installation section of thick bamboo on the stifled section of thick bamboo, go up the end cap activity and run through the installation section of thick bamboo, the inner wall screw thread of installation section of thick bamboo is inserted and is equipped with the cover and establish the end cap pressure cap on going up the end cap, it has spacing platform to construct on the end cap, the end portion that the end cap was pressed to the end cap with spacing platform conflict overlap joint.

Furthermore, the end part of the plug pressing cap is in an annular array and is provided with a plurality of balls in an inserted mode, and the balls are in rolling contact with the limiting table.

Furthermore, conical mounting platforms are respectively constructed on the opposite sides of the two plugging cylinders, the two positioning cylinders are respectively mounted on the two mounting platforms, inserting ports matched with the two mounting platforms are respectively constructed at the two ends of the cylinder body, a first annular groove is formed in the outer arc surface of each mounting platform, and the first sealing ring is mounted in the first annular groove.

Furthermore, two location section of thick bamboo all is the toper structure, the both ends of a rubber section of thick bamboo all are constructed with location section of thick bamboo assorted interface.

Furthermore, a second annular groove is formed in the outer arc surface of the positioning cylinder, and the second sealing ring is installed in the second annular groove.

Furthermore, the screwing directions of the plug pressing cap and the plug barrel positioned above the plug pressing cap are the same.

The utility model has the advantages as follows:

1. the bottom of barrel is established to one of them stifled section of thick bamboo thread cover, insert the activity of a rubber section of thick bamboo and establish to the barrel and make the one end of a rubber section of thick bamboo insert and establish on a location section of thick bamboo, place the rock core in a rubber section of thick bamboo, another stifled section of thick bamboo is established to the thread cover again, and make another location section of thick bamboo on stifled section of thick bamboo peg graft with a rubber section of thick bamboo, it contradicts to the rock core to twist the end cap again, go up the end cap and carry out the centre gripping to the rock core under the cooperation of end cap down, through two first sealing washers and two second sealing washers, in order to ensure the holistic leakproofness of holder, detect the back to the rock core simultaneously, become flexible two and block up a section of thick bamboo, can be quick dismantle the separation with the holistic part of holder, so that wash.

Drawings

FIG. 1 is a perspective view of the present invention;

fig. 2 is a plan elevation view of the present invention;

fig. 3 is a sectional view taken along the line a-a of fig. 2 according to the present invention;

FIG. 4 is an enlarged view of the point B in FIG. 3 according to the present invention;

fig. 5 is an enlarged view of the present invention at C in fig. 3;

fig. 6 is an enlarged view of fig. 3D according to the present invention;

reference numerals: 1. a barrel; 2. plugging the cylinder; 3. a first seal ring; 4. a positioning cylinder; 5. a rubber tube; 6. a second seal ring; 7. a lower plug; 8. an upper plug; 9. a through hole; 10. mounting the cylinder; 11. pressing a cap by a plug; 12. a limiting table; 13. a ball bearing; 14. an installation table; 15. a first annular groove; 16. a second annular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

As shown in fig. 1, 2, 3, 5, and 6, a seal structure of a core holder plug includes: a cylinder body 1; the two blocking cylinders 2 are respectively sleeved at two ends of the cylinder body 1 in a threaded manner, and first sealing rings 3 are respectively arranged between the two blocking cylinders 2 and two ends of the cylinder body 1; two positioning cylinders 4 respectively arranged on the opposite sides of the two blocking cylinders 2; the rubber tube 5 is arranged in the tube body 1, two ends of the rubber tube 5 are respectively in inserting fit with the two positioning tubes 4, second sealing rings 6 are respectively arranged between two ends of the rubber tube 5 and the two blocking tubes 2, and the outer surface of the rubber tube 5 and the inner surface of the tube body 1 form an annular pressure cavity; the lower plug 7 is fixedly arranged on the lower plug barrel 2, the end part of the lower plug 7 is movably inserted into the rubber barrel 5, and a flow channel is arranged on the lower plug 7 in a penetrating way; the upper plug 8 is threaded through the plug barrel 2 positioned above, the end part of the upper plug 8 is movably inserted into the rubber barrel 5, and a flow channel is formed in the upper plug 8 in a penetrating manner; through-hole 9, run through and set up on barrel 1 and communicate with the ring pressure chamber, establish 2 threaded sleeves with one of them stifled section of thick bamboo in the bottom of barrel 1, insert the activity of a rubber section of thick bamboo 5 and establish to barrel 1 in and make the one end of a rubber section of thick bamboo 5 insert and establish on location section of thick bamboo 4, place the rock core in a rubber section of thick bamboo 5, another stifled section of thick bamboo 2 is established to the threaded sleeves again, and make location section of thick bamboo 4 on another stifled section of thick bamboo 2 peg graft with a rubber section of thick bamboo 5, twist again and move upper plug 8 and contradict the rock core, upper plug 8 carries out the centre gripping to the rock core under the cooperation of lower plug 7, through two first sealing washer 3 and two second sealing washer 6, in order to ensure the holistic leakproofness of holder rock core, detect the back simultaneously, become flexible two stifled section of thick bamboo 2, can be quick dismantle the holistic part of holder and separate, so that it is convenient to wash.

As shown in fig. 1, fig. 2, fig. 3, and fig. 4, in some embodiments, an installation cylinder 10 is installed on a plug cylinder 2 located above, an upper plug 8 movably penetrates through the installation cylinder 10, a plug pressing cap 11 sleeved on the upper plug 8 is inserted into an inner wall thread of the installation cylinder 10, a limiting table 12 is constructed on the upper plug 8, the end of the plug pressing cap 11 is abutted to the limiting table 12, the plug pressing cap 11 is twisted to rotate and move, so that the end of the plug pressing cap 11 abuts to the upper plug 8 to move, when the upper plug 8 abuts to a core in an adjusting and moving manner, the upper plug 8 does not need to rotate, interference to the core due to rotational friction force of the upper plug 8 is avoided, and detection accuracy is ensured.

As shown in fig. 4, in some embodiments, the end of the plug pressing cap 11 is inserted with a plurality of balls 13 in an annular array, and the plurality of balls 13 are all in rolling contact with the limiting table 12, and through the arrangement of the balls 13, the friction force generated when the plug pressing cap 11 rotates to contact the limiting table 12 is reduced, so that it is more convenient to adjust the upper plug 8 to extrude and contact the core.

As shown in fig. 6, in some embodiments, conical mounting platforms 14 are configured on opposite sides of two plugging cylinders 2, two positioning cylinders 4 are respectively mounted on the two mounting platforms 14, insertion ports matched with the two mounting platforms 14 are configured at two ends of the cylinder body 1, a first annular groove 15 is formed in an outer arc surface of the mounting platform 14, a first sealing ring 3 is mounted in the first annular groove 15, and by setting the mounting platforms 14, the first sealing ring 3 is mounted in the first annular groove 15, so as to increase a contact area between the plugging cylinder 2 and the cylinder body 1, and increase a contact area of the first sealing ring 3, so that a sealing performance of an annular pressure cavity formed between the two plugging cylinders 2, the cylinder body 1 and the rubber cylinder 5 is better.

As shown in fig. 5, in some embodiments, the two positioning cylinders 4 are both conical, the two ends of the rubber cylinder 5 are both configured with insertion ports matching with the positioning cylinders 4, the positioning cylinders 4 are conical, and the end of the rubber cylinder 5 is configured with insertion ports, so that the rubber cylinder 5 and the positioning cylinders 4 can be inserted and matched in an insertion manner more conveniently.

As shown in fig. 5, in some embodiments, the second annular groove 16 is formed in the outer arc surface of the positioning cylinder 4, the second sealing ring 6 is installed in the second annular groove 16, the outer arc surface of the positioning cylinder 4 is in a tapered structure, and the second sealing ring 6 is installed in the second annular groove 16 to increase the sealing area of the second sealing ring 6, so that the sealing performance of the rubber cylinder 5 is better, and meanwhile, after the rubber cylinder 5 is pressed, the sealing performance of the connection between the rubber cylinder 5 and the positioning cylinder 4 is ensured.

As shown in fig. 3, in some embodiments, the plug pressing cap 11 and the plug barrel 2 located above have the same thread direction, and the thread direction is the same, so that when the plug pressing cap 11 is screwed tightly, the plug barrel 2 does not become loose, and when the plug pressing cap 11 is screwed tightly, the plug barrel 2 does not need to be clamped and fixed any more.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seal structure of core holder end cap, its characterized in that includes:

a cylinder (1);

the two blocking cylinders (2) are respectively sleeved at two ends of the cylinder body (1) in a threaded manner, and first sealing rings (3) are respectively arranged between the two blocking cylinders (2) and two ends of the cylinder body (1);

two positioning cylinders (4) respectively arranged on the opposite sides of the two blocking cylinders (2);

the rubber tube (5) is arranged in the tube body (1), two ends of the rubber tube (5) are respectively in plug-in fit with the two positioning tubes (4), a second sealing ring (6) is arranged between two ends of the rubber tube (5) and the two blocking tubes (2), and the outer surface of the rubber tube (5) and the inner surface of the tube body (1) form an annular pressure cavity;

the lower plug (7) is fixedly arranged on the lower plug barrel (2), the end part of the lower plug (7) is movably inserted into the rubber barrel (5), and a flow channel is formed in the lower plug (7) in a penetrating manner;

the upper plug (8) penetrates through the plug barrel (2) above the upper plug in a threaded manner, the end part of the upper plug (8) is movably inserted into the rubber barrel (5), and a flow channel is formed in the upper plug (8) in a penetrating manner;

and the through hole (9) is arranged on the cylinder body (1) in a penetrating way and is communicated with the annular pressure cavity.

2. The sealing structure of the core holder plug as claimed in claim 1, wherein an installation barrel (10) is installed on the plug barrel (2) above, the upper plug (8) movably penetrates through the installation barrel (10), a plug pressing cap (11) sleeved on the upper plug (8) is inserted into the inner wall thread of the installation barrel (10), a limiting table (12) is constructed on the upper plug (8), and the end of the plug pressing cap (11) is abutted and overlapped with the limiting table (12).

3. The seal structure of the core holder plug as claimed in claim 2, wherein a plurality of balls (13) are inserted into the end of the plug cap (11) in an annular array, and the plurality of balls (13) are all in rolling contact with the limit table (12).

4. The core holder plug sealing structure according to claim 1, wherein two conical mounting platforms (14) are respectively configured at opposite sides of the two plugging cylinders (2), the two positioning cylinders (4) are respectively mounted on the two mounting platforms (14), insertion ports matched with the two mounting platforms (14) are respectively configured at two ends of the cylinder body (1), a first annular groove (15) is formed in the outer arc surface of each mounting platform (14), and the first sealing ring (3) is mounted in the first annular groove (15).

5. The seal structure of the core holder plug as claimed in claim 1, wherein the two positioning cylinders (4) are both conical in structure, and the rubber cylinder (5) is provided with insertion ports at both ends thereof, which are matched with the positioning cylinders (4).

6. The seal structure of the core holder plug as claimed in claim 5, wherein the outer arc surface of the positioning cylinder (4) is provided with a second annular groove (16), and the second seal ring (6) is mounted in the second annular groove (16).

7. The seal structure of the core holder plug as claimed in claim 2, characterized in that the plug cap (11) has the same thread direction as the plug barrel (2) above.