CN213017676U - Sealing structure for core holder plug - Google Patents
Sealing structure for core holder plug Download PDFInfo
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- CN213017676U CN213017676U CN202021269064.9U CN202021269064U CN213017676U CN 213017676 U CN213017676 U CN 213017676U CN 202021269064 U CN202021269064 U CN 202021269064U CN 213017676 U CN213017676 U CN 213017676U
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Abstract
The utility model discloses a sealing structure for the plug of a rock core holder, which comprises a conical sleeve, a sealing head, a plug pressing cap, a barrel and a rubber barrel, wherein the rubber barrel of the utility model extends out of the barrel to be connected with the conical sleeve, thus being easy to operate; be provided with the spacing recess that spacing sand grip matches on the spacing hole of end cap in the taper sleeve with the end cap, avoided compressing tightly end cap in-process end cap and rotated, in addition, the sealing washer on the taper sleeve realizes the sealed of head and taper sleeve, and a packing rubber section of thick bamboo is fixed at the outer wall of taper sleeve one end and the parcel is lived the end cap partly and is realized gluing the sealed between a packing rubber section of thick bamboo and taper sleeve and end cap, and the sealing pressure of these several places all rises and increases along with annular cover pressure chamber pressure, and is sealed effectual.
Description
Technical Field
The utility model belongs to the field relates to a seal structure for rock core holder end cap particularly.
Background
Sealing techniques are often employed in permeation or leakage resistant devices, and have also greatly driven the development of industrial field device technology. Various special or special sealing structures are also produced due to different industrial occasions or environments or conditions, that is, the sealing structures generally have no universality or universality.
In a special core holder, particularly a high-temperature high-pressure long core holder, the requirement on the sealing property of a sealing structure is very strict due to the rigor requirement on the environment or experimental analysis conditions; when the core holder is used in an experiment, if the tightness or the sealing effect of the core holder is not good, the effect and the result of the whole experiment are directly influenced, and errors can also occur in the analysis of experiment data.
Seal structure is more complicated to be difficult to the operation in current rock core holder, should open a rock core holder's seal structure like chinese application utility model patent CN201610697866.1, it includes that head, head press cap, core stopper plug, regulation press cap, and the structure is complicated, sealed a little many, the utility model discloses well core stopper bottom and packing element and rock core contact when pressing the cap to compress tightly the core stopper through adjusting, the rotation probably appears in the core stopper, then disturbance core, packing element cause sealed inefficacy, in addition the utility model discloses well packing element is located the barrel, is connected extremely difficult operation with packing element and core stopper.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of prior art, provide a seal structure for rock core holder end cap, this structure is applicable to rock core holder end cap seal structure, the utility model discloses sealed effectual, convenient operation.
The utility model discloses a realize through following technical scheme:
a sealing structure for a core holder plug comprises a conical sleeve, a plug pressing cap, a barrel and a rubber barrel;
the conical sleeve comprises a conical tube, an annular limiting sleeve and a fastening nut, a plug mounting hole is formed in the conical tube and comprises a plug pressing cap mounting hole and a plug limiting hole, the inner diameter of the plug pressing cap mounting hole is larger than that of the plug limiting hole, internal threads are arranged in the plug pressing cap mounting hole, a boss structure is formed outside the conical tube, an annular groove is formed on the surface of the boss, and a sealing gasket is placed in the annular groove; the lower end of the conical tube is connected with a rubber barrel, and a rock core is filled in the rubber barrel;
the annular limiting sleeve is axially provided with a plurality of through holes, the upper end of the annular limiting sleeve is connected with the conical pipe through threads on the outer side of the boss, and the outer side of the lower end of the annular limiting sleeve is tightly attached to the inner wall of the cylinder body, so that the cylinder body, the conical sleeve and the rubber cylinder are enclosed into an annular pressing cavity;
the clamping nut is in threaded connection with the conical pipe and is used for pressing the conical sleeve and the end socket;
the end socket is cylindrical, a conical sleeve positioning section, an annular pressurizing and covering section and a cylinder connecting section are sequentially formed in the end socket from top to bottom, the inner diameters of the three sections are sequentially increased, the end surface of the inner side of the annular pressurizing and covering section is tightly attached to the end surface of the annular groove on the conical pipe boss structure, a gap between the end socket and the conical sleeve is sealed under the pre-tightening force of the clamping nut, a pressurizing and covering hole is further formed in the annular pressurizing and covering section, and the outlet of the pressurizing and covering hole is opposite to the annular limiting sleeve, so that fluid can fill the annular pressurizing cavity through a through hole of the annular limiting sleeve; a positioning pin hole is formed in the positioning section of the conical sleeve, a positioning pin is arranged in the positioning pin hole, and one end of the positioning pin is tightly attached to the outer side of the conical sleeve, so that the conical sleeve can be prevented from rotating; the inner side of the cylinder connecting section is provided with an internal thread for connecting the cylinder;
the plug is cylindrical and is arranged in the plug mounting hole of the conical tube, the plug comprises an upper screw section and a lower limiting section, the outer diameter of the screw section is smaller than that of the limiting section, a shoulder is formed at the joint of the screw section and the limiting section, and an injection and production port penetrating along the axial direction is formed in the plug;
the plug pressing cap is provided with external threads, the external threads of the plug pressing cap are matched with the internal threads of the plug pressing cap mounting hole, the lower end of the plug pressing cap is tightly attached to a convex shoulder between the plug screw section and the limiting section, and the plug pressing cap can be rotated to push the plug to move so that the plug presses a rock core.
In the technical scheme, the clamping nut is provided with the fastening pin, the fastening pin penetrates through the clamping nut and one end of the fastening pin is tightly attached to the end socket, and the clamping nut is prevented from loosening.
In the technical scheme, a limiting groove is axially formed in the plug limiting hole of the conical tube, and a limiting convex strip matched with the limiting groove is arranged on the outer side of the limiting section of the plug.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the rubber tube of the utility model extends out of the tube body and is connected with the conical sleeve, thus being easy to operate; be provided with the spacing recess that spacing sand grip matches on the spacing hole of end cap in the taper sleeve with the end cap, avoided compressing tightly end cap in-process end cap and rotated, in addition, the sealing washer on the taper sleeve realizes the sealed of head and taper sleeve, and a packing rubber section of thick bamboo is fixed at the outer wall of taper sleeve one end and the parcel is lived the end cap partly and is realized gluing the sealed between a packing rubber section of thick bamboo and taper sleeve and end cap, and the sealing pressure of these several places all rises and increases along with annular cover pressure chamber pressure, and is sealed effectual.
Drawings
Fig. 1 is an overall schematic view of the present invention.
Fig. 2 is a schematic view of a conical sleeve structure.
Fig. 3 is a schematic structural view of the annular stop collar.
Fig. 4 is a schematic view of the structure of the seal head.
Fig. 5 is a schematic view of a plug structure.
In the figure, 1, a seal head; 101. a conical sleeve positioning section; 1011. a positioning pin hole; 1012. positioning pins; 102. an annular overpressure section; 1021. covering and pressurizing the hole; 103. a barrel connection section; 2. a barrel; 3. a conical sleeve; 31. a tapered tube; 311. an annular groove; 312. a gasket; 313. an annular stop collar; 32. a plug mounting hole; 321. a plug pressing cap mounting hole; 322. a plug limiting hole; 323. a limiting groove; 33. tightening the nut; 331. a fastening pin; 4. a rubber tube; 5. a plug; 51. a screw section; 52. a limiting section; 53. injecting and producing ports; 6. pressing a cap by a plug; 7. an annular overpressure cavity;
for a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Examples
A sealing structure for a core holder plug comprises a conical sleeve 3, a plug 1, a plug pressing cap 6, a barrel 2 and a rubber barrel 4;
the conical sleeve 3 comprises a conical tube 31, an annular limiting sleeve 313 and a clamping nut 33, a plug mounting hole 32 is formed in the conical tube 31, the plug mounting hole 32 comprises a plug pressing cap mounting hole 321 and a plug limiting hole 322, the inner diameter of the plug pressing cap mounting hole 321 is larger than that of the plug limiting hole 322, internal threads are arranged in the plug pressing cap mounting hole 321, a boss structure is formed outside the conical tube 31, an annular groove 311 is formed on the surface of the boss, and a sealing gasket 312 is placed in the annular groove 311; the lower end of the conical tube 31 is connected with a rubber barrel 4, and a rock core is filled in the rubber barrel 4;
a plurality of through holes (as shown in fig. 3) are axially formed in the annular limiting sleeve 313, the upper end of the annular limiting sleeve is connected with the tapered tube 31 through threads on the outer side of the boss, and the outer side of the lower end of the annular limiting sleeve is tightly attached to the inner wall of the cylinder body 2, so that the cylinder body 2, the tapered sleeve 3 and the rubber cylinder 4 are enclosed to form an annular pressing cavity 7;
the clamping nut 33 is in threaded connection with the conical pipe 31 and is used for pressing the conical sleeve 3 and the end socket 1;
the end socket 1 is cylindrical, a conical sleeve positioning section 101, an annular pressurizing and covering section 102 and a cylinder connecting section 103 are sequentially formed in the end socket from top to bottom, the inner diameters of the three sections are sequentially increased, the end surface of the inner side of the annular pressurizing and covering section 102 is tightly attached to the end surface of the annular groove 311 in the boss structure of the conical pipe 31, a gap between the end socket 1 and the conical sleeve 3 is sealed under the pre-tightening force of the clamping nut 33, a pressurizing and covering hole 1021 is further arranged in the annular pressurizing and covering section 102, and the outlet of the pressurizing and covering hole 1021 is opposite to the annular limiting sleeve 313, so that fluid can fill the annular pressurizing cavity 7 through a through hole of the annular limiting sleeve 313; a positioning pin hole 1011 is formed in the conical sleeve positioning section 101, a positioning pin 1012 is arranged in the positioning pin hole 1011, and one end of the positioning pin 1012 is tightly attached to the outer side of the conical sleeve 3, so that the conical sleeve 3 can be prevented from rotating; the inner side of the connecting section of the cylinder body 2 is provided with an internal thread for connecting the cylinder body 2;
the plug 5 is cylindrical, is arranged in the plug mounting hole 32 of the conical tube 31, and comprises an upper screw section 51 and a lower limiting section 52, the outer diameter of the screw section 51 is smaller than that of the limiting section 52, a shoulder is formed at the joint of the screw section 51 and the limiting section 52, and an injection and production port 53 which penetrates along the axial direction is formed inside the plug 5;
the plug pressing cap 6 is provided with external threads, the external threads of the plug pressing cap 6 are matched with the internal threads of the plug pressing cap mounting hole 321, the lower end of the plug pressing cap 6 is tightly attached to a convex shoulder between the plug screw section 51 and the limiting section 52, and the plug 5 can be pushed to move by rotating the plug pressing cap 6 so that the plug 5 compresses a core.
The clamping nut 33 is provided with a fastening pin 331, the fastening pin 331 penetrates through the clamping nut 33, and one end of the fastening pin 331 is tightly attached to the end socket 1 and used for preventing the clamping nut 33 from loosening.
A limiting groove 322 is axially arranged in the plug limiting hole 322 of the conical tube 31, and a limiting convex strip matched with the limiting groove 323 is arranged on the outer side of the limiting section of the plug.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (3)
1. The utility model provides a seal structure for rock core holder end cap which characterized in that: comprises a conical sleeve, a sealing head, a plug pressing cap, a barrel and a rubber barrel;
the conical sleeve comprises a conical tube, an annular limiting sleeve and a fastening nut, a plug mounting hole is formed in the conical tube and comprises a plug pressing cap mounting hole and a plug limiting hole, the inner diameter of the plug pressing cap mounting hole is larger than that of the plug limiting hole, internal threads are arranged in the plug pressing cap mounting hole, a boss structure is formed outside the conical tube, an annular groove is formed on the surface of the boss, and a sealing gasket is placed in the annular groove; the lower end of the conical tube is connected with a rubber barrel, and a rock core is filled in the rubber barrel;
the annular limiting sleeve is axially provided with a plurality of through holes, the upper end of the annular limiting sleeve is connected with the conical pipe through threads on the outer side of the boss, and the outer side of the lower end of the annular limiting sleeve is tightly attached to the inner wall of the cylinder body, so that the cylinder body, the conical sleeve and the rubber cylinder are enclosed into an annular pressing cavity;
the clamping nut is in threaded connection with the conical pipe and is used for pressing the conical sleeve and the end socket;
the end socket is cylindrical, a conical sleeve positioning section, an annular pressurizing and covering section and a cylinder connecting section are sequentially formed in the end socket from top to bottom, the inner diameters of the three sections are sequentially increased, the end surface of the inner side of the annular pressurizing and covering section is tightly attached to the end surface of the annular groove on the conical pipe boss structure, a gap between the end socket and the conical sleeve is sealed under the pre-tightening force of the clamping nut, a pressurizing and covering hole is further formed in the annular pressurizing and covering section, and the outlet of the pressurizing and covering hole is opposite to the annular limiting sleeve, so that fluid can fill the annular pressurizing cavity through a through hole of the annular limiting sleeve; a positioning pin hole is formed in the conical sleeve positioning section, a positioning pin is arranged in the positioning pin hole, and an internal thread is arranged on the inner side of the cylinder connecting section and used for connecting the cylinder;
the plug is cylindrical and is arranged in the plug mounting hole of the conical tube, the plug comprises an upper screw section and a lower limiting section, the outer diameter of the screw section is smaller than that of the limiting section, a shoulder is formed at the joint of the screw section and the limiting section, and an injection and production port penetrating along the axial direction is formed in the plug;
the plug pressing cap is provided with external threads, the external threads of the plug pressing cap are matched with the internal threads of the plug pressing cap mounting hole, the lower end of the plug pressing cap is tightly attached to a convex shoulder between the plug screw section and the limiting section, and the plug pressing cap can be rotated to push the plug to move so that the plug presses a rock core.
2. A seal arrangement for a core holder plug as claimed in claim 1, wherein: and the fastening pin is arranged on the clamping nut, penetrates through the clamping nut and is tightly attached to one end of the clamping nut, and the end socket is tightly attached to one end of the clamping nut, so that the clamping nut is prevented from loosening.
3. A seal arrangement for a core holder plug as claimed in claim 1, wherein: and a limiting groove is axially arranged in the plug limiting hole of the conical tube, and a limiting convex strip matched with the limiting groove is arranged on the outer side of the limiting section of the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021269064.9U CN213017676U (en) | 2020-07-02 | 2020-07-02 | Sealing structure for core holder plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021269064.9U CN213017676U (en) | 2020-07-02 | 2020-07-02 | Sealing structure for core holder plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017676U true CN213017676U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021269064.9U Active CN213017676U (en) | 2020-07-02 | 2020-07-02 | Sealing structure for core holder plug |
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| Country | Link |
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| CN (1) | CN213017676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263737A (en) * | 2021-12-27 | 2022-04-01 | 内蒙古北方重工业集团有限公司 | Ultra-high pressure container for deep in-situ fidelity test research |
-
2020
- 2020-07-02 CN CN202021269064.9U patent/CN213017676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263737A (en) * | 2021-12-27 | 2022-04-01 | 内蒙古北方重工业集团有限公司 | Ultra-high pressure container for deep in-situ fidelity test research |
| CN114263737B (en) * | 2021-12-27 | 2023-09-26 | 内蒙古北方重工业集团有限公司 | Ultra-high pressure container for deep in-situ fidelity test research |
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