CN216666798U - High-temperature high-pressure test sealing joint for steel-plastic composite pressure pipe - Google Patents
High-temperature high-pressure test sealing joint for steel-plastic composite pressure pipe Download PDFInfo
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- CN216666798U CN216666798U CN202123340257.6U CN202123340257U CN216666798U CN 216666798 U CN216666798 U CN 216666798U CN 202123340257 U CN202123340257 U CN 202123340257U CN 216666798 U CN216666798 U CN 216666798U
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Abstract
A steel-plastic composite pressure pipe high-temperature high-pressure test sealing joint comprises a holding ring, a sealing lining pipe, end part pressing discs and rod-shaped pressing connecting pieces, wherein the holding ring is arranged on the outer sides of the upper end and the lower end of the steel-plastic composite pressure pipe, the sealing lining pipe is arranged on the inner sides of the upper end and the lower end of the steel-plastic composite pressure pipe, the end part pressing discs are respectively arranged at one ends of the upper holding ring and the lower holding ring, which are far away from the steel-plastic composite pressure pipe, a plurality of rod-shaped pressing connecting pieces are arranged between the upper end part pressing discs and the lower end part pressing discs, because the end part pressing disc and the rod-shaped pressing connecting piece are arranged, the pressing discs at the two end parts are pressed above the holding ring after the holding ring and the sealing lining pipe are installed, the two ends of the rod-shaped pressing connecting piece are radially inserted into the connecting grooves, meanwhile, the internal thread sleeve is rotated, the end pressing disc is driven by the clamping table to press the central part to move, so that the pressing function of the holding ring is realized, and the axial falling of the sealing joint caused by the overlarge water pressure is prevented.
Description
Technical Field
The utility model relates to the technical field of steel-plastic composite pipes, in particular to a sealing joint for a high-temperature and high-pressure test of a steel-plastic composite pressure pipe.
Background
The steel-plastic composite pipe is an upgraded product of the traditional galvanized pipe and can be widely applied to water supply and heating in the building or municipal field. The steel-plastic composite pipes are generally connected by screw threads, groove connections, flange connections or electromagnetic induction double hot melt connections.
As a metal plastic composite pipeline, the steel-plastic composite pressure pipe has excellent cold and hot water conveying performance, and a static hydraulic test is required for ensuring the pressure-bearing capacity of the pipeline under pressure water conveying safety investigation. During testing, two ends of the pipe are connected with the sealing joints, and then the pipe is placed in a test box for testing. The existing sealing joint is generally a tightly-holding type annular sealing joint, the sealing joint is installed at two ends of a steel-plastic composite pressure pipe and is fastened and locked through bolts, the sealing joint is tightly held with the end part of the pipe, the internal water pressure of the pipe is higher (generally not lower than 2.5MPa) during the test, the internal water pressure of the pipe even exceeds 10MPa during the explosion test, and the steel-plastic composite pipe has plasticity, so that the pipe is easy to deform in the pressure rising process, the axial falling of the existing tightly-holding type sealing joint is caused, and the test is stopped or even generates safety risks.
Disclosure of Invention
According to the technical problems, the utility model provides a steel-plastic composite pressure pipe high-temperature and high-pressure test sealing joint which is characterized by comprising a clasping ring, a sealing lining pipe, end pressing discs and a rod-shaped pressing connecting piece, wherein the clasping ring is arranged on the outer sides of pipelines at the upper end part and the lower end part of the steel-plastic composite pressure pipe;
the clamp ring is composed of two semi-clamp rings which are symmetrical front and back, each semi-clamp ring is of a semi-annular structure, the left side and the right side of the bottom of each semi-clamp ring are provided with fixing lugs, and fastening threaded holes are formed in the fixing lugs;
the inner side of the semi-holding ring is also provided with a soft sealing gasket;
a part of the top of the sealing lining pipe is positioned outside the steel-plastic composite pipeline, a part of the bottom of the sealing lining pipe is positioned inside the steel-plastic composite pipeline, a circular boss is arranged at the center of the sealing lining pipe, an annular groove corresponding to the circular boss is formed in the inner wall of the semi-hooping ring, and the sealing lining pipe is clamped and installed in the annular groove through the circular boss;
the position of the sealing lining pipe, which is positioned in the steel-plastic composite pressure pipe, is also provided with an annular sealing ring;
the position of the sealing lining pipe, which is positioned outside the steel-plastic composite pressure pipe, is provided with a connecting external thread;
the center of the end part pressing disc is provided with a through hole corresponding to the sealing lining pipe, the end part pressing disc is also provided with connecting grooves which have the same number as the rod-shaped pressing connecting pieces and correspond to the rod-shaped pressing connecting pieces in position, and the connecting grooves are of U-shaped structures and are communicated with the edge of the pressing disc;
the rod-shaped compression connecting piece comprises a first connecting rod, a second connecting rod, an internal thread sleeve, an external thread column and a clamping table, wherein the internal thread sleeve is arranged at the bottom end of the first connecting rod and is rotatably connected with the first connecting rod, the second connecting rod is arranged at the bottom of the first connecting rod, the external thread column is arranged at the top end of the second connecting rod, the internal thread sleeve is connected with the external thread column through threads, and the clamping tables are arranged at the top end of the first connecting rod and the bottom end of the second connecting rod;
the rod-shaped pressing connecting piece and the connecting groove are uniformly arranged along the circumferential interval of the end pressing disc.
The utility model has the beneficial effects that:
the utility model is provided with the holding ring and the sealing lining pipe, the sealing lining pipe can be fixed at the end part of the steel-plastic composite pressure pipe through the holding ring, simultaneously, the falling off of the steel-plastic composite pressure pipe caused by radial deformation generated by water pressure can be prevented, simultaneously, the holding ring and the sealing lining pipe are installed and then the two end part pressing discs are pressed above the holding ring, simultaneously, the first connecting rods and the second connecting rods at the two ends of the rod-shaped pressing connecting pieces are inserted into the connecting grooves pressed by the end part pressing discs along the radial direction, simultaneously, the internal thread sleeve is rotated, so that the two connecting rods continuously move towards the center under the action of the internal thread sleeve and the external thread column, simultaneously, the clamping tables at the two ends drive the two end part pressing discs to move towards the center to realize the pressing function of the holding ring, and the axial falling off condition of the sealing joint caused by overlarge water pressure is prevented, the anti-drop nature of this device has been strengthened in the setting of shaft-like connecting piece that compresses tightly, and this device can prevent axial and radial droing, has reduced the joint risk of droing that tubular product deformation leads to, and shaft-like connecting piece that compresses tightly and the setting of tip compress tightly a components of a whole that can function independently and simple to operate, only need twist during the fastening revolve the internal thread sleeve can for the installation operation is succinct more convenient.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of a front view of the present invention;
FIG. 3 is an enlarged view of portion A;
FIG. 4 is a top view of the end hold-down disk of the present invention;
fig. 5 is a cross-sectional view of a rod-like compression connector of the present invention.
As shown in the figure: 1. a clasping ring; 2. sealing the lining pipe; 3. an end pressing disc; 4. a rod-shaped compression connecting piece; 5. a semi-clasping ring; 6. fixing the ear; 7. a flexible seal pad; 8. a circular boss; 9. an annular seal ring; 10. a via hole; 11. connecting grooves; 12. a first link; 13. a second link; 14. an internally threaded sleeve; 15. an externally threaded post; 16. clamping a platform; 17. a steel-plastic composite pressure pipe.
Detailed Description
Example 1
The utility model provides a steel-plastic composite pressure pipe 17 high-temperature high-pressure test sealing joint which is characterized by comprising a holding ring 1, a sealing lining pipe 2, end part pressing discs 3 and rod-shaped pressing connecting pieces 4, wherein the holding ring 1 is arranged on the outer sides of pipelines at the upper and lower end parts of the steel-plastic composite pressure pipe 17, the sealing lining pipe 2 is arranged on the inner sides of pipelines at the upper and lower end parts of the steel-plastic composite pressure pipe 17, the end part pressing discs 3 are respectively arranged at one ends of the upper and lower holding rings 1 far away from the steel-plastic composite pressure pipe 17, the rod-shaped pressing connecting pieces 4 are provided with a plurality of pressing discs 3 and are arranged between the upper and lower end parts, and the upper and lower end parts of the rod-shaped pressing connecting pieces 4 are respectively connected with the end part pressing discs 3 in a detachable manner;
the clamp ring 1 is composed of two semi-clamp rings 5 which are symmetrical front and back, each semi-clamp ring 5 is of a semi-annular structure, the left side and the right side of the bottom of each semi-clamp ring 5 are provided with fixing lugs 6, and the fixing lugs 6 are provided with fastening threaded holes;
the inner side of the half clasping ring 5 is also provided with a soft sealing gasket 7;
a part of the top of the sealing lining pipe 2 is positioned outside the steel-plastic composite pipeline, a part of the bottom of the sealing lining pipe 2 is positioned inside the steel-plastic composite pipeline, a circular boss 8 is arranged at the central position of the sealing lining pipe 2, an annular groove corresponding to the circular boss 8 is formed in the inner wall of the semi-enclasping ring 5, and the sealing lining pipe 2 is clamped and installed in the annular groove through the circular boss 8;
the position of the sealing lining pipe 2 in the steel-plastic composite pressure pipe 17 is also provided with an annular sealing ring 9;
the position of the sealing lining pipe 2 outside the steel-plastic composite pressure pipe 17 is provided with a connecting external thread;
the center of the end part pressing disc 3 is provided with a through hole 10 corresponding to the sealing lining pipe 2, the end part pressing disc 3 is also provided with connecting grooves 11 which have the same number as the rod-shaped pressing connecting pieces 4 and correspond to the rod-shaped pressing connecting pieces 4 in position, and the connecting grooves 11 are U-shaped structures and are communicated with the edge of the pressing disc;
the rod-shaped pressing connecting piece 4 comprises a first connecting rod 12, a second connecting rod 13, an internal thread sleeve 14, an external thread column 15 and a clamping table 16, wherein the internal thread sleeve 14 is arranged at the bottom end of the first connecting rod 12, the internal thread sleeve 14 is rotatably connected with the first connecting rod 12, the second connecting rod 13 is arranged at the bottom of the first connecting rod 12, the external thread column 15 is arranged at the top end of the second connecting rod 13, the internal thread sleeve 14 is connected with the external thread column 15 through threads, and the clamping table 16 is arranged at the top end of the first connecting rod 12 and the bottom end of the second connecting rod 13;
the rod-shaped pressing connecting pieces 4 and the connecting grooves 11 are uniformly arranged along the circumferential interval of the end pressing disc 3.
Example 2
When the utility model is used, the enclasping ring 1 and the sealing lining pipe 2 are firstly installed at the end part of the steel-plastic composite pressure pipe 17, the bottom end of the sealing lining pipe 2 is firstly inserted into the steel-plastic composite pressure pipe 17 when the utility model is installed, then the two half enclasping rings 5 of the enclasping ring 1 are symmetrically buckled in the front and back directions, so that the circular boss 8 of the sealing lining pipe 2 is clamped in the annular grooves of the two half enclasping rings 5, after the buckling is finished, the two half enclasping rings 5 are fastened from the end part of the steel-plastic composite pressure pipe 17 by a bolt passing through the fastening threaded holes of the fixing lugs 6 at the left and right sides, meanwhile, the soft sealing gasket 7 at the inner side of the enclasping ring 1 is jointed with the outer side of the steel-plastic composite pressure pipe 17, the sealing lining pipe 2 is fixed with the inner side of the enclasping ring 1 through the circular boss 8, meanwhile, the replacement sealing ring of the sealing lining pipe 2 is jointed with the inner wall of the steel-plastic composite pressure pipe 17, then the end part pressing disc 3 is pressed at the outer side of the enclasping ring 1, meanwhile, the top end of the sealing lining pipe 2 is exposed outside through the central through hole 10, then the end parts of a first connecting rod 12 and a second connecting rod 13 of the rod-shaped pressing connecting piece 4 are inserted into a connecting groove 11 of the end pressing disc 3 along the radial direction, then the internal thread sleeve 14 is screwed, so that the two connecting rods continuously move towards the center under the action of the internal thread sleeve 14 and the external thread column 15, meanwhile, clamping tables 16 at the two ends are clamped outside the end pressing disc 3 to drive the two end pressing discs 3 to press towards the center to move so as to realize the pressing function of the clamping ring 1, the axial falling-off condition of the sealing joint caused by the overlarge water pressure is prevented, and the falling-off prevention performance of the device is enhanced due to the arrangement of the rod-shaped pressing connecting piece 4.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. While the utility model has been described with reference to various components which are conventional in the art, it will be understood by those skilled in the art that the present invention is not limited to the details of the foregoing embodiments, which are provided to illustrate the principles of the utility model and various changes and modifications which can be made without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The sealing joint for the high-temperature and high-pressure test of the steel-plastic composite pressure pipe is characterized by comprising a holding ring, a sealing lining pipe, end pressing discs and a rod-shaped pressing connecting piece, wherein the holding ring is arranged on the outer sides of pipelines at the upper end part and the lower end part of the steel-plastic composite pressure pipe;
the clamp ring is composed of two semi-clamp rings which are symmetrical front and back, each semi-clamp ring is of a semi-annular structure, the left side and the right side of the bottom of each semi-clamp ring are provided with fixing lugs, and fastening threaded holes are formed in the fixing lugs;
a part of the top of the sealing lining pipe is positioned outside the steel-plastic composite pipeline, a part of the bottom of the sealing lining pipe is positioned inside the steel-plastic composite pipeline, a circular boss is arranged at the center of the sealing lining pipe, an annular groove corresponding to the circular boss is formed in the inner wall of the semi-hooping ring, and the sealing lining pipe is clamped and installed in the annular groove through the circular boss;
the center of the end part pressing disc is provided with a through hole corresponding to the sealing lining pipe, the end part pressing disc is also provided with connecting grooves which have the same number as the rod-shaped pressing connecting pieces and correspond to the rod-shaped pressing connecting pieces in position, and the connecting grooves are of U-shaped structures and are communicated with the edge of the pressing disc;
rod-like connecting rod that compresses tightly comprises first connecting rod, second connecting rod, internal thread sleeve, external screw thread post and ka tai, first connecting rod bottom is equipped with the internal thread sleeve, internal thread sleeve and first connecting rod swivelling joint, the second connecting rod is located first connecting rod bottom and top and is equipped with the external screw thread post, pass through threaded connection between internal thread sleeve and the external screw thread post, the top of first connecting rod and the bottom of second connecting rod all are equipped with ka tai.
2. The steel-plastic composite pressure pipe high-temperature high-pressure test sealing joint as claimed in claim 1, wherein a flexible sealing gasket is further provided on the inner side of the half clasping ring.
3. The steel-plastic composite pressure pipe high-temperature and high-pressure test sealing joint as claimed in claim 1, wherein an annular sealing ring is further disposed at a position of the sealing liner pipe inside the steel-plastic composite pressure pipe.
4. The steel-plastic composite pressure pipe high-temperature and high-pressure test sealing joint as claimed in claim 1, wherein the position of the sealing liner pipe outside the steel-plastic composite pressure pipe is provided with a connecting external thread.
5. The high-temperature high-pressure test sealing joint for the steel-plastic composite pressure pipe as claimed in claim 1, wherein the rod-shaped compression connecting pieces and the connecting grooves are uniformly arranged along the circumferential direction of the end compression disc at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123340257.6U CN216666798U (en) | 2021-12-28 | 2021-12-28 | High-temperature high-pressure test sealing joint for steel-plastic composite pressure pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123340257.6U CN216666798U (en) | 2021-12-28 | 2021-12-28 | High-temperature high-pressure test sealing joint for steel-plastic composite pressure pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216666798U true CN216666798U (en) | 2022-06-03 |
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ID=81798354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123340257.6U Active CN216666798U (en) | 2021-12-28 | 2021-12-28 | High-temperature high-pressure test sealing joint for steel-plastic composite pressure pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216666798U (en) |
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2021
- 2021-12-28 CN CN202123340257.6U patent/CN216666798U/en active Active
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