CN110645354B - Sealing rubber ring for pipe fitting hydraulic pressure pressing - Google Patents
Sealing rubber ring for pipe fitting hydraulic pressure pressing Download PDFInfo
- Publication number
- CN110645354B CN110645354B CN201911000718.XA CN201911000718A CN110645354B CN 110645354 B CN110645354 B CN 110645354B CN 201911000718 A CN201911000718 A CN 201911000718A CN 110645354 B CN110645354 B CN 110645354B
- Authority
- CN
- China
- Prior art keywords
- rubber ring
- sealing
- support ring
- ring
- pipe fitting
- 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.)
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Classifications
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
- F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the surfaces
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
- F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
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- 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
- Y02E10/20—Hydro energy
Abstract
The invention discloses a sealing rubber ring for hydraulic pressing of a pipe fitting, which comprises a supporting ring and a rubber ring body, wherein an annular groove is formed in the inner side of the rubber ring body, the supporting ring is arranged in the annular groove, the supporting ring is of a hollow structure, and a through hole used for communicating the hollow structure in the supporting ring with the inner cavity of the pipe fitting is formed in the inner side of the supporting ring. The sealing rubber ring for hydraulic pressing of the pipe fitting is reasonable in structural design, when the pipe fitting is pressed, the pressure of inner cavity water passes through the guide hole in the supporting ring, the water pressure is led into the rubber plate interlayer, the rubber plate is propped against the workpiece and the plug to generate pressing force, the pressing force can be increased in equal proportion along with the increase of the internal pressure, and therefore effective high-pressure sealing is achieved, and the sealing rubber ring is suitable for hydraulic pressing sealing of large-size pipe fittings and is reliable in sealing.
Description
Technical Field
The invention relates to the technical field of pipe fitting water pressure detection, in particular to a sealing rubber ring for pipe fitting water pressure pressing.
Background
As shown in fig. 3, in the current water pressure detection of ductile cast iron pipe fittings, an annular rubber plate is generally arranged on the end face of a pipe fitting joint, and the end face of a workpiece and a plug are sealed by applying pressure between the workpiece and the rubber plate and elastic deformation of the rubber plate, so that water filling and pressing of an inner cavity of a pipe fitting product are realized.
When the water pressure detection pressure of large-size products and medium-size products is high (more than 2.5 MPa), the method has poor sealing and cannot be pressed; specifically, the method shown in fig. 3 relies on mechanical pressure to compress the rubber plate to establish sealing, when the pipe fitting interface is larger, for example, DN is more than 1200mm, the product interface is that the casting surface is uneven, so that the force for compressing the rubber plate is different everywhere on the circumference, thereby affecting the lifting of sealing pressure, and failing to realize the high-pressure hydraulic experiment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the sealing rubber ring for hydraulic pressing of the pipe fitting, which is applicable to hydraulic pressing sealing of large-specification pipe fittings and has reliable sealing.
In order to solve the technical problems, the invention adopts the following technical scheme:
the sealing rubber ring for hydraulic pressing of the pipe fitting comprises a supporting ring and a rubber ring body, wherein an annular groove is formed in the inner side of the rubber ring body, the supporting ring is arranged in the annular groove and is of a hollow structure, and a through hole used for communicating the hollow structure in the supporting ring with the inner cavity of the pipe fitting is formed in the inner side of the supporting ring.
Further, the supporting ring is arranged at the upper middle position and the lower middle position of the rubber ring body to form a sandwich structure.
The outer edge of the supporting ring is arranged in the annular groove of the rubber ring body.
The Shore hardness of the rubber ring body is 60-70 degrees.
The support ring is a hollow annular steel plate.
The water tank is arranged at the joint of the supporting ring and the rubber ring body on the supporting ring, and the hollow structure in the supporting ring is communicated with the water tank.
The water tanks are a group of annular water tanks arranged side by side.
The support ring is provided with radial flow guide holes along the radial direction of the support ring, and the support ring is internally provided with axial flow guide holes communicated with the radial flow guide holes and the water tank.
The water tank is an arc-shaped water tank.
The support ring comprises an upper annular plate and a lower annular plate, a radial flow guide hole is formed between the upper annular plate and the lower annular plate in a sealing mode, and the inner edge of the lower annular plate extends inwards relative to the inner edge of the upper annular plate.
Compared with the prior art, the invention has the following advantages:
the sealing rubber ring for hydraulic pressing of the pipe fitting is reasonable in structural design, when the pipe fitting is pressed, the pressure of inner cavity water passes through the guide hole in the supporting ring, the water pressure is led into the rubber plate interlayer, the rubber plate is propped against the workpiece and the plug to generate pressing force, the pressing force can be increased in equal proportion along with the increase of the internal pressure, and therefore effective high-pressure sealing is achieved, and the sealing rubber ring is suitable for hydraulic pressing sealing of large-size pipe fittings and is reliable in sealing.
Drawings
The contents and the marks in the drawings expressed in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic illustration of the application of the sealing gasket of the present invention.
FIG. 2 is an enlarged partial schematic view of the sealing rubber ring of the present invention.
FIG. 3 is a schematic diagram of a prior art stripper rubber application.
In the figure:
1. pipe fittings to be pressed, a plug, a supporting ring, a rubber ring body, a radial guide hole, an axial guide hole and an annular water tank.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings, which illustrate in further detail.
As shown in fig. 1 and 2, the sealing rubber ring for hydraulic pressing of the pipe fitting comprises a supporting ring 3 and a rubber ring body 4, wherein an annular groove is formed in the inner side of the rubber ring body 4, the supporting ring is arranged in the annular groove, the supporting ring 3 is of a hollow structure, and a through hole used for communicating the hollow structure in the supporting ring with the inner cavity of the pipe fitting 1 to be pressed is formed in the inner side of the supporting ring 3.
The supporting ring 3 is arranged at the upper and lower middle positions of the rubber ring body to form a sandwich structure. The outer fringe of supporting ring is established in the annular groove of rubber circle body, and the outside of supporting ring is wrapped up by the rubber circle body.
The support ring 3 is a hollow annular steel plate. Preferably, the support ring comprises an upper annular plate and a lower annular plate, wherein a radial flow guide hole is formed between the upper annular plate and the lower annular plate in a sealing way at the outer edge, and the inner edge of the lower annular plate extends inwards relative to the inner edge of the upper annular plate, so that the positioning is stable.
The water tank is arranged at the joint of the supporting ring and the rubber ring body on the supporting ring, and the hollow structure in the supporting ring is communicated with the water tank. Furthermore, the water tanks are a group of annular water tanks 7 which are arranged side by side, and the water tanks are arc-shaped water tanks.
The supporting ring 3 is provided with radial diversion holes 5 along the radial direction, and the supporting ring is provided with axial diversion holes 6 which are communicated with the radial diversion holes and the water tank.
When the inner cavity is pressurized, the pressure of the inner cavity water passes through the diversion hole in the supporting ring, the water pressure is led into the interlayer of the rubber plate, the rubber plate is propped against the workpiece and the plug to generate a pressing force, and the pressing force can be increased in equal proportion along with the increase of the internal pressure, so that the effective high-pressure sealing is realized, and the sealing device is suitable for the hydraulic pressurized sealing of large-size pipe fittings and is reliable in sealing.
Preferred specific examples are:
the improved structure of the solid rubber plate is used for manufacturing a hollow rubber plate with a sandwich layer, a steel plate supporting ring is arranged in the rubber plate, and a diversion hole is arranged in the rubber plate and can communicate with water energy when the inner cavity of the pipe fitting is pressurized. The step is arranged on the original sealing plug 2 plate for pressing and is used for installing and positioning the sealing rubber ring and wrapping the outer circle of the rubber ring body so as to prevent the rubber ring from expanding outwards when being pressed.
The rubber ring body is a sandwich type rubber ring body and is of an annular structure, an inner layer is hollow, and the Shore hardness of the rubber material is 60-70 degrees; the support ring is used for supporting an interlayer of the annular rubber ring, keeping a certain thickness, keeping the rubber ring round and matched with the shape of the workpiece, and is internally provided with radial diversion holes which are radial and uniformly distributed on the circumference and communicated with the annular water tank through the axial diversion holes.
The sealing when the pipe fitting is pressed by the elastic deformation of the rubber plate can be realized, and when the pipe fitting is pressed, the sealing is realized by the elastic deformation of the rubber plate, and when the pipe fitting is pressed, the pressure of the water in the inner cavity is increased by the high-pressure pump, the water pressure is led into the interlayer of the rubber ring body through the diversion hole in the annular rubber ring supporting ring, the upper rubber plate and the lower rubber plate of the rubber ring body are propped against the workpiece and the plug by the principle of normal pressure, the pressing force is generated, and the pressing force can be increased in equal proportion along with the increase of the internal pressure, so that the effective high-pressure sealing is realized.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and the above-described technical features may be arbitrarily combined to form a plurality of embodiments of the present invention.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied to other applications without any modification, as long as the inventive concept and technical scheme are adopted.
Claims (3)
1. A sealing rubber ring for hydraulic pressing of a pipe fitting is characterized in that: the inner side of the rubber ring body is provided with an annular groove, the support ring is arranged in the annular groove, the support ring is of a hollow structure, and the inner side of the support ring is provided with a through hole used for communicating the hollow structure in the support ring with the inner cavity of the pipe fitting;
the Shore hardness of the rubber ring body is 60-70 degrees;
the outer edge of the supporting ring is arranged in the annular groove of the rubber ring body; a water tank is arranged on the joint of the support ring and the rubber ring body, and the hollow structure in the support ring is communicated with the water tank; the water tanks are a group of annular water tanks arranged side by side; the water tank is an arc-shaped water tank;
the support ring is provided with radial diversion holes along the radial direction of the support ring, and the support ring is internally provided with axial diversion holes which are communicated with the radial diversion holes and the water tank; the support ring comprises an upper annular plate and a lower annular plate, a radial flow guide hole is formed between the upper annular plate and the lower annular plate in a sealing mode, and the inner edge of the lower annular plate extends inwards relative to the inner edge of the upper annular plate.
2. A sealing gasket for hydraulic crimping of a tubular member as claimed in claim 1, wherein: the supporting rings are arranged at the upper and lower middle positions of the rubber ring body to form a sandwich structure.
3. A sealing gasket for hydraulic crimping of a tubular member as claimed in claim 1, wherein: the support ring is a hollow annular steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911000718.XA CN110645354B (en) | 2019-10-21 | 2019-10-21 | Sealing rubber ring for pipe fitting hydraulic pressure pressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911000718.XA CN110645354B (en) | 2019-10-21 | 2019-10-21 | Sealing rubber ring for pipe fitting hydraulic pressure pressing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110645354A CN110645354A (en) | 2020-01-03 |
| CN110645354B true CN110645354B (en) | 2023-08-11 |
Family
ID=69013248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911000718.XA Active CN110645354B (en) | 2019-10-21 | 2019-10-21 | Sealing rubber ring for pipe fitting hydraulic pressure pressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110645354B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1356218A (en) * | 1962-03-08 | 1964-03-27 | Cadillac Gage Co | Metal sealing device |
| CN202280842U (en) * | 2011-11-01 | 2012-06-20 | 南车二七车辆有限公司 | Sealing ring having square cross section |
| JP2014016025A (en) * | 2012-06-13 | 2014-01-30 | Nsk Ltd | Driving device, rotation introducing machine, conveying device and semiconductor manufacturing apparatus |
| CN104613176A (en) * | 2014-12-19 | 2015-05-13 | 洛阳能源密封件有限公司 | Self-pressurization sealing ring |
| CN210715920U (en) * | 2019-10-21 | 2020-06-09 | 芜湖新兴新材料产业园有限公司 | Sealing rubber ring for hydraulic pressing of pipe fittings |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001248734A (en) * | 2000-03-07 | 2001-09-14 | Kurimoto Ltd | Sealing device for shaft such as valve stem |
| US10100958B2 (en) * | 2016-08-11 | 2018-10-16 | Trendsetter Engineering, Inc. | Gasket for use in sealing flanges together |
| US20180156208A1 (en) * | 2016-12-05 | 2018-06-07 | Compressor Products International, Llc | Inflatable static seal for a reciprocating rods |
-
2019
- 2019-10-21 CN CN201911000718.XA patent/CN110645354B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1356218A (en) * | 1962-03-08 | 1964-03-27 | Cadillac Gage Co | Metal sealing device |
| CN202280842U (en) * | 2011-11-01 | 2012-06-20 | 南车二七车辆有限公司 | Sealing ring having square cross section |
| JP2014016025A (en) * | 2012-06-13 | 2014-01-30 | Nsk Ltd | Driving device, rotation introducing machine, conveying device and semiconductor manufacturing apparatus |
| CN104613176A (en) * | 2014-12-19 | 2015-05-13 | 洛阳能源密封件有限公司 | Self-pressurization sealing ring |
| CN210715920U (en) * | 2019-10-21 | 2020-06-09 | 芜湖新兴新材料产业园有限公司 | Sealing rubber ring for hydraulic pressing of pipe fittings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110645354A (en) | 2020-01-03 |
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