CN221824453U - Hydraulic test sealing ring - Google Patents
Hydraulic test sealing ring Download PDFInfo
- Publication number
- CN221824453U CN221824453U CN202420548128.0U CN202420548128U CN221824453U CN 221824453 U CN221824453 U CN 221824453U CN 202420548128 U CN202420548128 U CN 202420548128U CN 221824453 U CN221824453 U CN 221824453U
- Authority
- CN
- China
- Prior art keywords
- sealing
- connecting pipe
- pipe
- groove
- sealing ring
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 84
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 229920001875 Ebonite Polymers 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 6
- 230000002706 hydrostatic effect Effects 0.000 claims description 22
- 230000000694 effects Effects 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 229910001141 Ductile iron Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a hydraulic test sealing ring, which is formed into a hollow inner cavity by soft rubber or hard rubber, fixedly connected with a connecting pipe, and communicated with the inner cavity. The sealing ring can be matched with a polygonal, semicircular, rectangular groove or an inner hole conical surface on the sealing surface of the baffle, the connecting pipe penetrates through a through hole at the bottom of the groove or the conical surface and is connected with the pressure fluid pipe, and the inner cavity is inflated and sealed after being pressurized. The hard rubber is in a plane shape or an angle shape, and is glued to the bottom or the conical surface of the groove. The outer surface of the connecting pipe joint is designed with a bulge or/and a groove. When the sealing ring is pressurized to seal the mouth of the pipe fitting or the casting pipe, a curved surface seal surrounding the end surface of the mouth is formed, and when the inner sleeve is sealed, a large-area annular seal is formed. The utility model can adapt to the casting surface and the size, strengthens the sealing effect, has no plastic deformation in the use process and obviously prolongs the service life.
Description
Technical Field
The utility model is applied to the field of manufacturing of ductile iron pipes or pipe fittings, relates to a hydrostatic test of the ductile iron pipes or pipe fittings, and particularly relates to a sealing rubber ring for the hydrostatic test.
Background
Whether the ductile iron pipe or the ductile iron pipe fitting is used, a hydrostatic test is needed before delivery, and the overall bearing strength and leakage of the product are detected so as to ensure the tightness of the pipeline when the pipeline is used for conveying pressure fluid. The general practice is to seal the mouth of a pipe fitting or a cast pipe with a rubber pad plane, in order to ensure no leakage in the hydrostatic test, the sealing pressure of a hydraulic cylinder is usually high, so that the sealing pad is plastically deformed, the sealing pad is scrapped due to tearing damage, or the elastic deformation capability is gradually lost, the sealing effect is gradually deteriorated, the sealing ring is frequently replaced, and the cost of the hydrostatic test sealing ring is high.
Numerous sealing ring patent applications, such as CN2058716U, provide a circular cross section rubber ring and CN2628837Y provides a lip shaped rubber ring, all for the joint sealing of cast iron pipes. CN2628838Y discloses an anti-slip joint for cast pipes, and triangular steel nails are arranged in front of an anti-slip rubber ring. CN201757229U provides a helical bellows rubber ring for sealing connection of a helical welded pipe. CN212251557U discloses a planar sealing rubber ring for the interface sealing of a quick-change joint of a pipeline. CN212251558U discloses a rubber ring for sealing PE pipe joints that is convenient for connection. CN212776075U discloses a rubber ring for tap water pipe, which can be applied to hot-dip cast iron pipe, copper pipe, stainless steel pipe, plastic composite steel pipe, aluminum-plastic composite pipe, etc. of inner enamel. The sealing rings are used for sealing the pipeline interfaces, and are not used for hydraulic tests of pipe fittings or ductile iron pipes.
The hydraulic pressure testing machine is developed in cooperation with Shandong Boyi company and is used for large-caliber cast pipes and large-caliber pipe fittings. The tube mouth, and cast tube socket and inner sleeve outer surface were sealed prior to hydrostatic testing.
Disclosure of utility model
The utility model solves the technical problems that: the hydraulic test sealing ring is characterized in that an inner cavity pressure is utilized to seal a pipe fitting or a casting pipe opening to form curved surface sealing or form large annular surface sealing with the outer surface of an inner sleeve, so that the sealing effect is enhanced. The sealing ring has no plastic deformation and long service life.
The technical scheme adopted by the utility model is as follows: the hydraulic test sealing ring is formed into a hollow inner cavity by soft rubber, and the soft rubber is fixedly connected with the connecting pipe and communicated with the inner cavity. The sealing ring is matched with a polygonal or semicircular groove on the sealing surface of the baffle, and the connecting pipe passes through a through hole at the bottom of the groove.
In addition, the hydrostatic test sealing ring can also form a hollow inner cavity by soft rubber and hard rubber, the hard rubber is fixedly and hermetically connected with the soft rubber, and the hard rubber is fixedly connected with the connecting pipe. If a rectangular groove is processed on the baffle, the hard rubber is in a plane shape and is glued on the bottom surface of the rectangular groove, and the connecting pipe penetrates through the through hole at the bottom of the rectangular groove. If the hard rubber is used for sealing the inner hole of the baffle, the hard rubber is in an angle shape, the inclined sealing surface of the hard rubber is glued with the conical surface of the inner hole for sealing, and the connecting pipe is fixedly connected with the sealing surface and penetrates through the through hole on the conical surface.
Preferably, the outer surface of the connecting pipe joint is provided with a protrusion or/and a groove. The cross-section of the protrusions and grooves may be rectangular, or triangular, or semicircular, or semi-elliptical, or trapezoidal, or a combination thereof.
Preferably, the outer end of the adapter tube is communicated with a pressure fluid tube, such as a water tube or a compressed air tube.
Preferably, when the sealing ring pressurizes and seals the pipe fitting or the casting pipe mouth, a curved surface seal surrounding the end surface of the mouth is formed, so that the sealing effect is enhanced.
The utility model has the beneficial effects that: the utility model can expand and deform according to the shape and the size of the end part of the cast pipe or the pipe fitting to form curved surface seal, and the hydraulic pressure is favorable for sealing the mouth part, so that the sealing effect is greatly improved. The utility model has no plastic deformation in the use process, the service life of the rubber ring is obviously prolonged, and the cost of the hydraulic test rubber ring is reduced.
Drawings
FIG. 1 is a schematic front view of example 1;
FIG. 2 is a schematic top view of FIG. 1;
Fig. 3 is a schematic diagram of the installation state of embodiment 1;
FIG. 4 is a schematic view showing the use state of example 1;
FIG. 5 is a schematic front view of example 2;
FIG. 6 is a schematic view showing the use state of example 2;
FIG. 7 is a schematic front view of example 3;
FIG. 8 is a schematic top view of FIG. 7;
FIG. 9 is a schematic view showing the use state of example 3;
Wherein: 1-soft rubber, 2-hard rubber, 3-connecting pipe, 4-bulge, 5-inner cavity, 6-baffle, 7-socket, 8-socket and 9-inner sleeve.
Detailed Description
The cross section of the sealing ring is round no matter the ball iron pipe or the ball iron pipe fitting, and the sealing ring is round after being pressurized.
Example 1.
The structure of the sealing ring of the embodiment is shown in fig. 1 and fig. 2. Comprises a planar hard rubber 2 and an arc soft rubber 1 which are fixedly and hermetically connected to form a hollow structure. The connecting pipe 3 is fixedly connected to the hard rubber 2, the connecting pipe 3 is communicated with the inner cavity 5, and pressure fluid such as pressure water or pressure air can be introduced into the inner cavity 5. The hard rubber 2 has high strength, is not easy to deform, has strong deformability, and has a shape directly related to a contact surface under the condition that the inner cavity 5 has pressure, and if the inner cavity 5 is negative pressure, the soft rubber 1 can retract to reduce the volume of the inner cavity 5. In order to increase the connection strength and the tightness between the connecting pipe 3 and the hard rubber 2, the outer surface of the joint of the connecting pipe 3 is provided with a bulge 4, as shown in the enlarged view of the attached figure 1, and a groove can be designed to increase the contact area of the connecting pipe 3 and the hard rubber and strengthen the connection strength and the tightness of the connecting pipe and the hard rubber. The cross section of the protrusion and the groove can be rectangular, triangular, semicircular, semi-elliptic, trapezoid and the like. If there are a plurality of projections and recesses, a combination of the above shapes is also possible.
Fig. 3 is a state of the installed embodiment, a rectangular groove is processed on the sealing surface of the baffle 6, and a through hole matched with the connecting pipe 3 is processed at the bottom of the groove. The connecting pipe 3 passes through the through hole, and the outer end is connected with a water pipe or a compressed air pipe. The planar hard rubber 2 is glued on the bottom of the groove and sealed. The arc-shaped soft rubber 1 contracts when the inner cavity 5 is under negative pressure, and is protected by the grooves, so that damage in the hydraulic test work is prevented.
Fig. 4 is a schematic diagram of the usage state of the present embodiment. The size of the groove of the baffle corresponds to the size of the socket of the pipe fitting, the baffle seals the socket of the pipe fitting, and the end face of the socket falls into the groove. Before the hydrostatic test, the pressure fluid is introduced into the inner cavity from the connecting pipe, the pressure fluid causes the soft rubber to expand outwards, and the soft rubber seals the inner surface and the outer surface of the bellmouth at the same time, thereby forming a curved surface seal surrounding the bellmouth end surface, and greatly increasing the sealing effect of the bellmouth. After all openings of the pipe fitting are sealed, water can be injected for hydrostatic test.
The soft rubber of the embodiment can be inflated according to the shape and the size of the end part of the socket, the roughness of the end surface of the socket, the ovality of the socket and other casting problems are not needed to be considered, and the sealing effect is good. In the case of a curved seal, the water pressure inside the tube causes the sealing ring to more closely abut the inner surface of the socket, which is aided by the water pressure. Because the sealing ring is in an elastic deformation state during working, no plastic deformation exists, the service life of the sealing ring is greatly prolonged, the sealing ring does not need to be replaced for a long time, and the cost of the sealing ring in a hydrostatic test is greatly reduced.
Example 2.
The seal ring of this embodiment is different from embodiment 1 in that the flat hard rubber 2 is not present, and the adapter tube 3 is directly fixedly connected with the soft rubber 1, as shown in fig. 5. In the embodiment, two protrusions 4 are provided, so that the connection performance of the connecting pipe 3 and the soft rubber 1 is enhanced.
Fig. 6 is a schematic diagram of the working state of the present embodiment. The sealing ring of this embodiment is installed in the annular groove of the baffle 6 as in embodiment 1, except that the groove is preferably a semicircular or polygonal groove. The bottom of the groove is provided with a through hole, the connecting pipe 3 passes through the through hole, and the outer end is connected with a water pipe or a compressed air pipe. The use method of the embodiment is similar to that of the embodiment 1, the baffle 6 seals the spigot 8, and after the connecting pipe sends pressure fluid into the inner cavity, the sealing ring and the spigot form a curved surface seal surrounding the end face of the spigot. After sealing, water can be injected for hydrostatic test.
This embodiment is similar to embodiment 1 in that it is used for sealing the mouth, and has the same advantages as embodiment 1.
Example 3.
The structure of the sealing ring is shown in the attached figures 7 and 8, the soft rubber 1 is arc-shaped, the hard rubber 2 is angle-shaped, and the hard rubber 2 is connected with the connecting pipe 3. The outer surface of the joint of the connecting pipe 3 is simultaneously provided with a bulge and a groove, so that the contact area with hard rubber is increased, and the connection strength of the joint is enhanced. The angular inclined surface is a sealing surface and is matched with the inner hole cone-shaped surface of the baffle, and the plane of the inclined surface is a pressed surface. The connecting pipe can be connected with the pressed surface or the sealing surface, and the sealing surface connecting pipe is shown in fig. 7.
This embodiment is used in conjunction with the internal bore of the baffle as shown in fig. 9. The bevel hard rubber at the corner of the sealing ring is glued and sealed with the conical surface of the baffle, the surface is the sealing surface of the hard rubber of the sealing ring, the other surface is the pressed surface, and the pressed surface is a plane, namely the lower surface of the sealing ring in the attached figure 9. The connecting pipe 3 is matched with a through hole on the cone surface, penetrates through the through hole, and the outer end of the connecting pipe is connected with a water pipe or a compressed air installation pipe.
If the caliber of the pipe fitting or the cast pipe is large, the inner sleeve 9 is sleeved in the pipe fitting or the cast pipe to reduce the pressure of the water pressure on the baffle, so that the pressure born by the baffle in the water pressure test can be reduced, the jacking force of the hydraulic cylinder is reduced, and the investment of the hydraulic station is reduced. When the inner cavity 5 is in a negative pressure state, the inner diameter of the sealing ring is increased, and the inner sleeve 9 can pass through the inner hole of the baffle plate. The inner sleeve 9 passes through the baffle positioning opening, pressurized fluid is filled into the inner cavity from the connecting pipe, and the soft rubber expands to be contacted with the outer surface of the inner sleeve, so that a large annular surface seal is formed. The inner sleeve 9 may be made of steel pipe, and has a smooth surface, so that a planar seal is easily formed.
The thickness of the baffle can be increased at the inner hole of the baffle, and the angle of the cone surface is increased, so that the size of soft rubber is increased, and the sealing of a large ring surface is easier to form.
During the hydrostatic test, the hard rubber pressure surface of the sealing ring can transmit the water pressure to the conical surface of the baffle plate through the pressurized fluid in the inner cavity, the sealing surface of the hard rubber is sealed with the conical surface of the inner hole of the baffle plate, the soft rubber is sealed with the outer surface of the inner sleeve, and an inner sealing space is formed during the hydrostatic test. After the hydrostatic test is completed, the inner cavity is firstly decompressed, and the inner sleeve is taken away after the soft rubber is contracted under negative pressure.
In a word, the utility model utilizes the pressurizing deformation capability of soft rubber to realize sealing, and particularly, when the curved surface sealing formed by pressurizing is used for a hydraulic test on the opening of a pipe fitting or a cast pipe, the sealing effect can be increased by utilizing the water pressure. And the sealing with the inner sleeve forms a large annular surface sealing, and the sealing effect is strengthened. The sealing ring is in a working state, has no plastic deformation and has long service life.
Claims (8)
1. The utility model provides a hydrostatic test sealing washer which characterized in that: a hollow inner cavity (5) is formed by soft rubber (1), the soft rubber (1) is fixedly connected with the connecting pipe (3) and is communicated with the inner cavity (5); the sealing ring is matched with a polygonal or semicircular groove on the sealing surface of the baffle, and the connecting pipe (3) passes through a through hole at the bottom of the groove.
2. The utility model provides a hydrostatic test sealing washer which characterized in that: the hollow inner cavity (5) is formed by soft rubber (1) and hard rubber (2), the hard rubber (2) is fixedly connected with the soft rubber (1) in a sealing way, and the hard rubber (2) is fixedly connected with the connecting pipe (3).
3. A hydrostatic test gasket according to claim 2, wherein: if a rectangular groove is processed on the baffle, the hard rubber (2) is in a plane shape and is glued on the bottom surface of the rectangular groove, and the connecting pipe (3) penetrates through a through hole at the bottom of the rectangular groove.
4. A hydrostatic test gasket according to claim 2, wherein: if the inner hole of the baffle is sealed, the hard rubber (2) is in an angle shape, the inclined sealing surface of the hard rubber is glued with the conical surface of the inner hole for sealing, and the connecting pipe (3) is fixedly connected with the sealing surface and penetrates through the through hole on the conical surface.
5. A hydrostatic test gasket according to claim 1 or 2, wherein: the outer surface of the joint of the connecting pipe (3) is provided with a bulge or/and a groove.
6. The hydrostatic test gasket of claim 5, wherein: the cross-section of the protrusions and grooves may be rectangular, or triangular, or semicircular, or semi-elliptical, or trapezoidal, or a combination thereof.
7. A hydrostatic test gasket according to claim 1 or 2, wherein: the outer end of the connecting pipe (3) is communicated with a pressure fluid pipe.
8. A hydrostatic test gasket according to claim 1 or 2, wherein: when the sealing ring pressurizes and seals the mouth of the pipe fitting or the casting pipe, the curved surface sealing surrounding the end surface of the mouth is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420548128.0U CN221824453U (en) | 2024-03-19 | 2024-03-19 | Hydraulic test sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420548128.0U CN221824453U (en) | 2024-03-19 | 2024-03-19 | Hydraulic test sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221824453U true CN221824453U (en) | 2024-10-11 |
Family
ID=92960098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420548128.0U Active CN221824453U (en) | 2024-03-19 | 2024-03-19 | Hydraulic test sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221824453U (en) |
-
2024
- 2024-03-19 CN CN202420548128.0U patent/CN221824453U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201615300U (en) | High-pressure pipeline flange connecting structure | |
| CN209839392U (en) | Rubber sealing ring for connecting pipe bell mouth | |
| CN221824453U (en) | Hydraulic test sealing ring | |
| CN2380749Y (en) | Expansion sealing apparatus | |
| US8882154B1 (en) | Pipe coupling | |
| CN206320446U (en) | A kind of fast connecting device of pipelines | |
| CN212131569U (en) | Anti-leakage corrugated pipe | |
| CN210661817U (en) | Flange type expansion joint | |
| CN105221874B (en) | Full-bore inputting type pipe joint | |
| CN205278623U (en) | A device for testing container leaks | |
| CN201288906Y (en) | Steel oil pipe opening flange code | |
| US9599260B1 (en) | Pipe coupling | |
| CN210890471U (en) | Detachable connecting pipe fitting | |
| CN212004658U (en) | T-shaped double-sealing double-receiving-head structure for rolling large-diameter steel pipe | |
| CN204692849U (en) | A kind of bellows Quick connection part | |
| CN210715920U (en) | Sealing rubber ring for hydraulic pressing of pipe fittings | |
| CN212537079U (en) | Tee bend reducing joint | |
| CN219177128U (en) | Socket pipe mouth air-filling seal structure | |
| CN216520128U (en) | High-pressure pipeline sealing ring for union | |
| CN218582511U (en) | Large end face pipe fitting connecting structure | |
| CN219829120U (en) | Water tank | |
| CN221871668U (en) | Sealing surface protection device with neck flange | |
| CN205606078U (en) | Fast -assembling seal for pipe joints device | |
| CN212057828U (en) | Pipeline for ground source heat pump with automatic maintenance function | |
| CN205534699U (en) | Circumscribed buckle structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |