CN116265801A - Self-tightening conical surface sealing device - Google Patents
Self-tightening conical surface sealing device Download PDFInfo
- Publication number
- CN116265801A CN116265801A CN202111554229.6A CN202111554229A CN116265801A CN 116265801 A CN116265801 A CN 116265801A CN 202111554229 A CN202111554229 A CN 202111554229A CN 116265801 A CN116265801 A CN 116265801A
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- CN
- China
- Prior art keywords
- hole
- grease
- fat
- head body
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 134
- 239000004519 grease Substances 0.000 claims abstract description 99
- 238000002347 injection Methods 0.000 claims abstract description 66
- 239000007924 injection Substances 0.000 claims abstract description 66
- 230000004323 axial length Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
- F16N21/06—Covering members for nipples, conduits or apertures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention provides a self-tightening conical surface sealing device which comprises a grease injection head body, a grease injection hole body and a sealing sleeve; the end of annotating the fat head body is provided with the toper sealed face, sealed pipe lantern ring cover is on the toper sealed face, annotate and be provided with the mounting hole on the fat hole body, the tip of mounting hole is located toper sealed face complex taper hole, when taper hole and toper sealed face extrusion each other, make sealed pipe box warp fill between taper hole and the toper sealed face and form the leakage path, and then continuously produce the effect of cutting off, annotate fat head body and the mutual extrusion of taper hole and become "wedge" deformation, and the toper sealed face does not produce deformation, the medium pressure in the fat hole is higher, the "wedge" is packed by the extrusion and is reduced annotating fat head and annotate fat hole between because of the pressure is partially, sealed fat lacks the probability that produces the leakage path, reduce annotate fat head inefficacy risk.
Description
Technical Field
The invention belongs to the field of oil and gas process pipeline application, and particularly relates to a self-tightening conical surface sealing device.
Background
In order to meet the lubricating or sealing requirements of all process pipelines and device components in the field, grease injection holes are often arranged at different positions of the process pipelines and devices in the oil-gas field station, and interfaces for connecting sealing plugs and grease injection heads are arranged according to different pressure levels of all the process pipelines and devices. In order to realize complete and effective sealing of process pipelines and devices with different pressure levels, the sealing of the grease injection hole, the plug and the grease injection head is often realized by arranging different sealing surfaces and sealing modes, the sealing process is to form a leakage channel between the sealing surfaces of the grease injection hole and the plug and between the sealing surfaces of the plug and the grease injection head in an extrusion sealing way, and the sealing surfaces of the plug and the grease injection head are screwed into the grease injection hole to press and deform to cut off the leakage channel during sealing. When the grease injecting head and the grease injecting hole sealing surface are biased, a pressure-bearing weak point exists between the grease injecting head and the grease injecting hole sealing surface, so that the cutting-off effect of the leakage channel is durable and poor in stability, and particularly when the pressure of an oil gas medium in the grease injecting hole fluctuates and is corrosive, the leakage of the grease injecting hole and even the scrapping of the grease injecting head are easily caused.
At present, the problem of sealing failure caused by pressure deflection of the sealing surfaces of the fat injection head and the fat injection hole is solved by adopting sealing fat at the sealing surfaces of the fat injection head and the fat injection hole, and sealing fat is utilized to seal the leakage channel of the sealing surface so as to ensure the sealing to be normal. The grease is formed of small compressible particles plus an adhesive to increase the flow closure of the sealing surface leakage path. The sealing grease is filled in a mode, so that the problems that the grease is frequently and easily leaked, the on-site grease filling head, particularly the high-pressure grease filling head, cannot be reused and the like exist.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a self-tightening conical surface sealing device which solves the problem of sealing failure caused by installation or manufacturing defects between the existing high-pressure grease injection head and the sealing surface of a grease injection hole.
The invention is realized by the following technical scheme:
a self-tightening conical surface sealing device comprises a grease injection head body, a grease injection hole body and a sealing sleeve;
the end of annotating the fat head body is provided with the toper sealed face, and sealed pipe lantern ring cover is provided with the mounting hole on the toper sealed face, and the tip of mounting hole is located the sealed face complex taper hole of toper, annotates the other end of fat head body and is connected with the mounting hole through fixed knot constructs, rotates fixed knot when annotating fat head body and constructs and be used for making annotating fat head body axial displacement, extrudeing the sealed pipe box between taper hole and the toper sealed face.
Preferably, the hardness of the sealing sleeve is smaller than that of the grease injecting head body and the grease injecting hole body.
Preferably, the conical sealing surface is provided with a ring groove, and the sealing sleeve is sleeved in the ring groove.
Preferably, the width of the ring groove is 10-30% of the axial length of the conical sealing surface.
Preferably, the slope of the conical sealing surface is 15 ° -30 °.
Preferably, the fixing structure is an external thread arranged on the circumferential surface of the grease injection head body, and an internal thread matched with the external thread is arranged in the mounting hole of the grease injection hole body.
Preferably, the end part of the fat injection head body is provided with a torsion part for driving the fat injection head body to rotate.
Preferably, the grease injection head body is sleeved with a grease injection head nut, the external thread is arranged on the circumferential surface of the grease injection head nut, and the torsion part is positioned on the circumferential surface of the end part of the grease injection head nut.
Preferably, the external dimension of the torsion part is larger than the diameter of the internal thread.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a self-tightening conical surface sealing device which comprises a grease injection head body, a grease injection hole body and a sealing sleeve; the end of the grease injection head body is provided with a conical sealing surface, the sealing pipe collar is sleeved on the conical sealing surface, the grease injection hole body is provided with a mounting hole, the end of the mounting hole is positioned in a conical hole matched with the conical sealing surface, when the conical hole and the conical sealing surface are mutually extruded, the sealing pipe sleeve is deformed to fill a leakage channel formed between the conical hole and the conical sealing surface, the cutting-off effect is further continuously generated, the mutual extrusion of the grease injection head body and the conical hole is changed into wedge-shaped deformation, the conical sealing surface is not deformed, the higher the medium pressure in the grease injection hole is, the wedge-shaped is extruded and filled, the probability of the leakage channel generated by pressure deviation and sealing grease deficiency between the grease injection head and the grease injection hole is reduced, and the failure risk of the grease injection head is reduced.
Drawings
FIG. 1 is a schematic diagram of a fat-filling head according to the present invention;
FIG. 2 is a schematic diagram illustrating the installation of the fat injection head and the fat injection hole according to the present invention;
FIG. 3 is an enlarged view of the sealing position of the stopper and the grease filling hole of the grease filling head according to the present invention.
In the figure: 1. a fat injection head body; 2. an external thread; 3. a torsion part; 4. a conical sealing surface; 5. sealing the pipe sleeve; 6. a grease injecting hole body; 7. an equipment lumen; 8. a pressure medium.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the invention.
Referring to fig. 1, a self-tightening conical surface sealing device comprises a grease injecting head body 1, a conical sealing surface 4, a grease injecting hole body 6 and a sealing pipe sleeve 5.
The sealed face 4 of toper is located the one end of annotating fat head body 1, and sealed pipe box 5 cover is established in the sealed region of extrusion of toper sealed face 4, and the other pot head of annotating fat head body 1 is equipped with annotates fat head nut, annotates to be provided with external screw thread 2 on the fat head nut, and the tip is provided with torsion portion 3 to sealed pipe box 5, annotate fat head nut, annotate fat head body 1 and the coaxial setting of toper sealed face 4.
The grease injecting hole is formed in the grease injecting hole body 6 and comprises a taper hole and a threaded hole coaxial with the taper hole, the taper sealing surface 4 is located in the taper hole during sealing, the external thread 2 of the grease injecting head nut is connected with the internal thread of the threaded hole, and the torsion part 3 is located outside the grease injecting hole body 6.
The grease injecting hole of the grease injecting hole body 6 is concentric with the grease injecting head body, the external thread 2 of the grease injecting head nut is screwed with the grease injecting hole body 6 through the internal thread of the grease injecting hole body 6, the torsion part 3 and the grease injecting head nut are of an integral structure, the grease injecting head nut is rotated through the torsion part 3, and the torsion is transmitted to the grease injecting head body 1 to enable the grease injecting head body to axially move.
The hardness of the sealing pipe sleeve 5 is smaller than that of the grease injecting head body 1 and the grease injecting hole body 6, so that under the extrusion of the grease injecting head body 1 and the grease injecting hole body 6, the gap between the grease injecting head body 1 and the grease injecting hole body is blocked by deformation of the sealing pipe sleeve 5, and the damage to the conical sealing surface 4 and the conical hole is avoided under the condition of ensuring deformation due to low hardness of the sealing pipe sleeve 5.
The sealing sleeve 5 is an elastic material, or a metal material with low hardness, such as aluminum or stainless steel, can be used.
The annular groove is formed in the conical sealing surface 4, the sealing sleeve 5 is sleeved in the annular groove, the surface of the sealing sleeve 5 is higher than the conical sealing surface 4, the sealing sleeve 5 is positioned through the annular groove, movement of the sealing sleeve 5 in the installation process is avoided, and sealing durability is guaranteed.
The width of the ring groove is 10-30% of the axial length of the conical sealing surface.
The slope of the conical sealing surface 4 is 15-30 deg..
In another embodiment, the fat injection head body 1 and the fat injection head nut are of an integral structure, the external thread 2 is directly formed on the circumferential surface of the fat injection head body 1, the torsion part 3 is located on the circumferential surface of the end part of the fat injection head body 1, the torsion part 3 is a regular hexagonal body, the external dimension of the torsion part 3 is larger than the diameter of the threaded hole, the fat injection head body is rotated through the torsion part 3, and meanwhile, when the end part of the torsion part 3 is abutted against the end part of the fat injection hole body 6, limit is formed on the fat injection head body 1.
During operation, the sealing pipe sleeve 5 is sleeved at the extrusion position of the conical sealing surface 4 at the front end of the grease injection head body 1, the conical sealing surface 4 and the sealing pipe sleeve 5 are plugged into the grease injection hole of the grease injection hole body 6, the conical sealing surface 4 and the conical hole form a centering effect, the grease injection head nut is screwed to screw the external thread 2 into the internal thread of the grease injection hole body 6, and the conical sealing surface 4 and the sealing pipe sleeve 5 on the grease injection head body 1 are abutted against the conical hole and form a pressing effect. When the nut of the grease injection head is continuously screwed, the sealing sleeve 5 is extruded and contracted between the taper hole of the grease injection hole and the conical sealing surface 4, the sealing sleeve 5 is in wedge-shaped deformation to seal the gap between the taper hole of the grease injection hole and the conical sealing surface 4, and the pressure medium 8 in the inner cavity 7 of the equipment forms a low-pushing effect on the wedge-shaped end surface of the deformed sealing sleeve 5, so that the deformed part of the sealing sleeve 5 is embedded into the gap between the taper hole of the grease injection hole and the conical sealing surface 4. When the pressure of the pressure medium 8 is higher, the pushing and pressing force effect of the sealing sleeve 5 to the wedge deformation part is stronger, the greater the pushing thickness between the conical hole embedded in the grease injection hole of the sealing sleeve 5 and the gap of the conical sealing surface 4 is, so that the self-sealing effect is formed between the conical hole of the grease injection hole and the gap of the conical sealing surface 4, and the probability and risk of the pressure deflection damage of the conical sealing surface 4 at the front end of the grease injection head body 1 caused by direct extrusion of the conical hole and the conical sealing surface 4 are reduced.
The working process comprises the following steps: as shown in the figure, the sealing sleeve 5 is sleeved at the conical sealing surface 4 at the end part of the grease injecting head body 1 and is aligned to the extrusion part of the conical sealing surface, the conical sealing surface 4 is close to and abutted against the conical hole on the 6-grease injecting hole body 6 by screwing the grease injecting head nut, the conical sealing surface 4 and the conical hole press the sealing sleeve 5, and the sealing sleeve 5 is compressed and deformed into a wedge shape under the pressing. When the medium is boosted, the pressure medium 8 in the inner cavity 7 of the device has a squeezing action on the sealing sleeve 5, the annular gap between the conical sealing surface 4 and the conical hole is filled tightly, and the deformation part of the sealing sleeve is expanded to block the leakage channel. The screwing and fastening process is continuously carried out, the annular gap between the conical sealing surface 4 and the conical hole is blocked by the expansion generated at the deformation part of the sealing sleeve 5, the pressure medium 8 stressed along the end surface of the sealing sleeve 5 continuously pushes the sealing sleeve 5 to block into the annular gap, the continuous expansion and deformation of the sealing sleeve 5 is further ensured, and the probability of sealing failure caused by the loss of compressible materials between the conical sealing surface 4 and the conical hole is reduced. In addition, because the sealing sleeve material between the conical sealing surface 4 and the conical hole is softer, the conical sealing surface 4 and the conical hole are guaranteed not to deform and be damaged when being fastened and pressed for a long time, and finally, the purposes that the sealing sleeve 5 protects the conical sealing surface 4 from damage to form durable sealing, meanwhile, the current situation that the grease filling head body 1 is frequently replaced due to the pressure deviation of the conical sealing surface 4 is reduced, and the sealing failure is achieved only by replacing the sealing sleeve 5, so that the input cost is saved, and the sealing performance of the grease filling head is continuously stable are achieved.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (9)
1. The self-tightening conical surface sealing device is characterized by comprising a grease injection head body 1, a grease injection hole body (6) and a sealing sleeve (5);
the end of annotating fat head body 1 is provided with toper sealed face (4), and sealed pipe box (5) ring cover is on toper sealed face (4), is provided with the mounting hole on annotating fat hole body (6), and the tip of mounting hole is located toper sealed face complex taper hole, annotates the other end of fat head body 1 and is connected with the mounting hole through fixed knot constructs, and it is used for making annotating fat head body (1) axial displacement to annotate fat head body (1) rotation fixed knot constructs, extrudees sealed pipe box (5) between taper hole and the toper sealed face 4.
2. The self-tightening conical surface sealing device according to claim 1, characterized in that the hardness of the sealing sleeve (5) is smaller than the hardness of the grease injecting head body (1) and the grease injecting hole body (6).
3. The self-tightening conical surface sealing device according to claim 1, wherein the conical sealing surface (4) is provided with a ring groove, and the sealing sleeve is sleeved in the ring groove.
4. The self-tightening cone sealing device according to claim 1, wherein the width of the ring groove is 10-30% of the axial length of the cone sealing surface.
5. The self-tightening cone sealing device according to claim 1, wherein the slope of the cone sealing surface is 15 ° -30 °.
6. The self-tightening conical surface sealing device according to claim 1, wherein the fixing structure is an external thread arranged on the circumferential surface of the grease injection head body (1), and an internal thread matched with the external thread is arranged in the mounting hole of the grease injection hole body (6).
7. The self-tightening cone sealing device according to claim 6, wherein the end of the grease injecting head body (1) is provided with a torsion part (3) for driving the grease injecting head body (1) to rotate.
8. The self-tightening conical surface sealing device according to claim 7, wherein the grease injection head body (1) is sleeved with a grease injection head nut, the external thread (2) is arranged on the circumferential surface of the grease injection head nut, and the torsion part (3) is arranged on the circumferential surface of the end part of the grease injection head nut.
9. The self-tightening cone sealing device according to claim 8, wherein the external dimension of the torsion portion (3) is larger than the diameter of the internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554229.6A CN116265801A (en) | 2021-12-17 | 2021-12-17 | Self-tightening conical surface sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554229.6A CN116265801A (en) | 2021-12-17 | 2021-12-17 | Self-tightening conical surface sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116265801A true CN116265801A (en) | 2023-06-20 |
Family
ID=86743838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111554229.6A Pending CN116265801A (en) | 2021-12-17 | 2021-12-17 | Self-tightening conical surface sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116265801A (en) |
-
2021
- 2021-12-17 CN CN202111554229.6A patent/CN116265801A/en active Pending
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