CN213576197U - Pipe end sealing structure - Google Patents
Pipe end sealing structure Download PDFInfo
- Publication number
- CN213576197U CN213576197U CN202022594080.1U CN202022594080U CN213576197U CN 213576197 U CN213576197 U CN 213576197U CN 202022594080 U CN202022594080 U CN 202022594080U CN 213576197 U CN213576197 U CN 213576197U
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- CN
- China
- Prior art keywords
- sealing ring
- nut
- phi
- screw rod
- extrusion block
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 74
- 238000001125 extrusion Methods 0.000 claims abstract description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Pipe Accessories (AREA)
Abstract
The utility model relates to the technical field of pipelines, especially, relate to a simple structure, fill in and take out convenient, can adapt to the pipe end seal structure that the pipe diameter changes. The lower end of the pressure plate is connected with an elastic sealing ring, the outer side of the sealing ring protrudes outwards, and the inner side of the sealing ring protrudes inwards; the screw rod part of the bolt freely penetrates out of the pressure plate from the sealing ring and is matched with a corresponding nut; and an extrusion block with a narrow upper end and a wide lower end is arranged on the screw rod part and is in contact with the inner side of the sealing ring. The utility model discloses during the use in the one end at screw cap portion place stretches into the pipeline for inside the sealing washer was in the pipeline, then swivel nut let clamp plate and screw rod take place relative movement, drove extrusion piece extrusion sealing washer, and the sealing washer takes place deformation, and to the circumference swell, supports tightly with the pipeline inner wall, reaches the shutoff effect of end cap, only need during the dismantlement reverse rotation nut can, have simple structure, fill in and take out the characteristics convenient, that can adapt to the pipe diameter and change.
Description
Technical Field
The utility model relates to the technical field of pipelines, especially, relate to a simple structure, fill in and take out convenient, can adapt to the pipe end seal structure that the pipe diameter changes.
Background
Generally, when a pipeline is overhauled, a pipe opening needs to be sealed, the pipe opening is often blocked by a plug, a traditional plug knocks a frustum-shaped plug into the pipe through inward axial force, the plug is difficult to take out after the overhaul is finished, the plug can be taken out after being crushed sometimes, the plug is damaged or the use frequency is low, broken objects are easy to remain in the pipeline, in addition, a rubber solid plug which expands in the pipe is also used, the nut is hard to tighten during the extrusion operation of the solid plug, the expansion amount is small, the requirement on the manufacturing and control of the outer diameter is high, the capacity of adapting to the change of the pipe diameter is poor, the pressure resistance is poor, parts of the solid plug are easy to rotate or move in the pipe during the installation and the disassembly, the operation is inconvenient, and.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a simple structure, fill in and take out convenient, can adapt to the pipe end seal structure that the pipe diameter changes.
The utility model adopts the technical proposal that: the pipe end sealing structure comprises a pressing plate, wherein the lower end of the pressing plate is connected with an elastic sealing ring, the outer side of the sealing ring protrudes outwards, and the inner side of the sealing ring protrudes inwards; the screw rod part of the bolt freely penetrates out of the pressure plate from the sealing ring and is matched with a corresponding nut; the screw rod part is provided with an extrusion block with a narrow upper end and a wide lower end, and the extrusion block is contacted with the inner side of the sealing ring.
For realizing better the utility model discloses, the extrusion piece press close to the nut portion of bolt, and the cooperation department welded seal of nut portion and extrusion piece.
For realizing better the utility model discloses screw rod portion tip be provided with the quad slit that sets up along the axis direction, the cooperation has the square core that can freely slide in the axial direction in this quad slit.
In order to better realize the utility model, the maximum diameter of the lower end of the extrusion block is phi a, the minimum diameter of the upper end is phi b, the diameter of the central line position in the sealing ring is phi c, and the requirement that phi a is more than phi c is more than phi b is met.
For realizing better the utility model discloses the lower terminal surface of clamp plate be provided with the spacing collar that is close to screw rod portion.
In order to better realize the utility model, the height of extrusion piece be L2, the height of sealing washer be L3, L3 be three times L2.
For better realizing the utility model discloses, the nut with the cooperation department of clamp plate be provided with the nut gasket.
For better realizing the utility model discloses, the sealing washer adopt rubber or silica gel.
The beneficial effects of the utility model are embodied in: the utility model discloses a pipe end seal structure, through the clamp plate, the sealing washer, the bolt, the cooperation of nut and extrusion piece etc, the one end at screw cap portion place stretches into in the pipeline during use for inside the sealing washer is in the pipeline, then swivel nut, let clamp plate and screw rod take place relative movement, drive extrusion piece extrusion sealing washer, deformation takes place for the sealing washer, bulge to circumference, support tightly with the pipeline inner wall, reach the shutoff effect of end cap, only need during the dismantlement reverse rotation nut can, and the pipe end seal structure has a simple structure, it is convenient to fill in and take out, can adapt to the characteristics that the pipe diameter changes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of a pipe end sealing structure of the present invention;
fig. 2 is a schematic top view of the tube end sealing structure of the present invention;
in the attached drawing, 1-pipeline, 2-bolt, 3-extrusion block, 4-sealing ring, 5-spacing ring, 6-pressing plate and 7-nut.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Example 1:
as shown in fig. 1 and 2, the pipe end sealing structure of the present invention comprises a pressing plate 6, wherein the lower end of the pressing plate 6 is connected with a sealing ring 4 with elasticity, the outer side of the sealing ring 4 protrudes outwards, and the inner side protrudes inwards; the screw rod part of the bolt 2 freely penetrates out of the pressure plate 6 from the sealing ring 4 and is matched with a corresponding nut 7; the screw rod part is provided with an extrusion block 3 with a narrow upper end and a wide lower end, and the extrusion block 3 is contacted with the inner side of the sealing ring 4. The utility model discloses a pipe end seal structure, through clamp plate 6, sealing washer 4, bolt 2, the cooperation of nut 7 and extrusion piece 3 etc, the one end at screw cap portion place stretches into in the pipeline 1 during use, make the sealing washer be in 1 inside the pipeline, then swivel nut 7, let clamp plate 6 and screw rod take place relative movement, drive extrusion piece 3 extrusion sealing washer 4, sealing washer 4 takes place deformation, bulge to circumference, support tightly with 1 inner wall of pipeline, reach the shutoff effect of end cap, only need during the dismantlement reverse rotation nut can, and the pressure-resistant pipe has a simple structure, fill in and take out the convenience, can adapt to the characteristics that the pipe diameter changes.
Example 2:
on the basis of above-mentioned embodiment, for further carrying out better the utility model discloses, extrusion piece 3 press close to the nut portion of bolt 2, and the cooperation department welded seal of nut portion and extrusion piece 3. After the design like this, can prevent that hard contact is airtight not tight between bolt 2 and extrusion piece 3 from causing the gap to leak, bolt 2 preferentially adopts the hexagon socket head cap bolt of button head, convenient welding.
Example 3:
on the basis of above-mentioned embodiment, for further carrying out better the utility model discloses screw rod portion tip be provided with the quad slit that sets up along the axis direction, the cooperation has the square core that can freely slide in the axial direction in this quad slit. After the design, the square core can be clamped by one wrench when the nut 7 is rotated, and the nut 7 is rotated by the other wrench, so that the operation is quite convenient. The square hole can be set as a hexagonal hole, and only one hexagonal prism wrench matched with one wrench matched with the nut 7 can be operated without using a square core.
Example 4:
on the basis of the above embodiment, in order to further better implement the utility model discloses, the lower extreme maximum diameter of extrusion piece 3 be Φ a, the upper end minimum diameter be Φ b, sealing washer 4 inside central line position diameter be Φ c, satisfy Φ a > Φ c > Φ b. The diameter phi b of the upper end of the extrusion block 3 is slightly smaller than the minimum inner diameter phi c of the sealing ring 4, the maximum diameter phi a of the lower part of the extrusion block 3 is larger than the minimum inner diameter phi c of the sealing ring 4, the unilateral maximum compression amount of the extrusion block 3 on the sealing ring 4 is t1, and the correlation formula is phi a-phi c-2 t 1.
Example 5:
on the basis of the above embodiment, in order to further better implement the utility model, the lower terminal surface of the pressing plate 6 is provided with the spacing collar 5 that is close to the screw rod portion. The limiting ring 5 is arranged between the sealing ring 4 and the pressing plate 6, the height L1 of the limiting ring 5 is selected to be just right, so that the maximum diameter phi a of the extrusion block 3 is slightly lower than the central line M of the minimum inner diameter phi c of the sealing ring 4, the sealing ring 4 generates the maximum compression amount, and the extrusion block 3 cannot pass through the head to reduce the compression amount.
Preferably, the height of the extrusion block 3 is L2, the height of the sealing ring 4 is L3, and the L3 is three times of the L2.
Example 6:
on the basis of above-mentioned embodiment, for further carrying out better the utility model discloses, nut 6 with clamp plate 6's cooperation department be provided with the nut gasket, after designing like this, can increase frictional force, improve the fixed stability of nut 6.
Preferably, the sealing ring 4 is made of rubber or silica gel.
As a preferred embodiment, the nut 7 is screwed by a wrench to drive the extrusion block 3 and the pressing plate 6 to extrude the sealing ring 4, the wall thickness of the sealing ring 4 is gradually increased upwards during extrusion, the sealing ring 4 expands outwards to generate large radial expansion under the extrusion action of the conical extrusion block 3, the sealing ring 4 is compressed after being blocked by the inner wall of the pipeline during radial expansion, and huge sealing force is generated to achieve the effect of sealing the pipe orifice. Compared with a common solid rubber expansion plug, the side surface of the extrusion block 3 is conical, and larger radial expansion deformation can be generated only by the middle part of the sealing ring 4 with smaller axial extrusion force, so that the nut 7 is tightened by a wrench more easily and labor-saving, the gripping force with the pipe wall is larger, and the pressure resistance is stronger. When the sealing ring 4 is taken out, the nut 7 is loosened, the bolt 2 is knocked downwards, the extrusion block 3 is driven to be gradually separated from the sealing ring 4 downwards, the extrusion force of the extrusion block 3 on the wall of the sealing ring is released, and the sealing ring 4 is retracted to the original state and can be conveniently taken out. It is worth noting that the lower end of the extruding block 3 can be generally provided with an arc-shaped chamfer so as to be convenient to withdraw. The length of the pressing plate 6 is larger than the inner diameter of the pipeline 1 to be plugged, the pressing plate pushes against the end face of the pipe orifice to play a role in positioning, the pressing plate cannot fall into the pipe during operation, the sealing ring 4 can be used for multiple times, the pressing plate is convenient to plug in and take out, the operation is simple, convenient and labor-saving, and broken objects are not left.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. The pipe end sealing structure is characterized in that: the sealing device comprises a pressing plate (6), wherein the lower end of the pressing plate (6) is connected with an elastic sealing ring (4), the outer side of the sealing ring (4) protrudes outwards, and the inner side of the sealing ring protrudes inwards; the sealing device also comprises a bolt (2), wherein a screw rod part of the bolt (2) freely penetrates out of the pressing plate (6) from the sealing ring (4) and is matched with a corresponding nut (7); the screw rod part is provided with an extrusion block (3) with a narrow upper end and a wide lower end, and the extrusion block (3) is contacted with the inner side of the sealing ring (4).
2. The tube-end sealing structure of claim 1, wherein: the extrusion block (3) is close to the nut part of the bolt (2), and the matching part of the nut part and the extrusion block (3) is welded and sealed.
3. The tube-end sealing structure of claim 2, wherein: the end part of the screw rod part is provided with a square hole arranged along the axial direction, and a square core capable of freely sliding in the axial direction is matched in the square hole.
4. The tube-end sealing structure of claim 1, wherein: the maximum diameter of the lower end of the extrusion block (3) is phi a, the minimum diameter of the upper end of the extrusion block is phi b, the diameter of the central line position inside the sealing ring (4) is phi c, and phi a is larger than phi c and phi b is larger than phi b.
5. The tube-end sealing structure of claim 4, wherein: and a limiting ring (5) close to the screw rod part is arranged on the lower end surface of the pressing plate (6).
6. The tube-end sealing structure of claim 5, wherein: the height of the extrusion block (3) is L2, the height of the sealing ring (4) is L3, and the L3 is three times of that of L2.
7. The tube-end sealing structure of claim 1, wherein: and a nut gasket is arranged at the matching part of the nut (7) and the pressing plate (6).
8. The tube-end sealing structure of claim 1, wherein: the sealing ring (4) is made of rubber or silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022594080.1U CN213576197U (en) | 2020-11-11 | 2020-11-11 | Pipe end sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022594080.1U CN213576197U (en) | 2020-11-11 | 2020-11-11 | Pipe end sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213576197U true CN213576197U (en) | 2021-06-29 |
Family
ID=76536475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022594080.1U Expired - Fee Related CN213576197U (en) | 2020-11-11 | 2020-11-11 | Pipe end sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213576197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803557A (en) * | 2021-07-29 | 2021-12-17 | 东方电气集团东方锅炉股份有限公司 | Nitrogen-filled sealing device of U-shaped exhaling pipe and using method |
-
2020
- 2020-11-11 CN CN202022594080.1U patent/CN213576197U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803557A (en) * | 2021-07-29 | 2021-12-17 | 东方电气集团东方锅炉股份有限公司 | Nitrogen-filled sealing device of U-shaped exhaling pipe and using method |
| CN113803557B (en) * | 2021-07-29 | 2023-11-03 | 东方电气集团东方锅炉股份有限公司 | Nitrogen filling sealing device of U-shaped call pipe and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210629 |