CN212480413U - Spiral welded pipe that leakproofness is strong - Google Patents
Spiral welded pipe that leakproofness is strong Download PDFInfo
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- CN212480413U CN212480413U CN202020375634.6U CN202020375634U CN212480413U CN 212480413 U CN212480413 U CN 212480413U CN 202020375634 U CN202020375634 U CN 202020375634U CN 212480413 U CN212480413 U CN 212480413U
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- spiral welded
- welded pipe
- spiral
- shaft section
- sleeve
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Abstract
A spiral welded pipe with strong sealing performance comprises a first spiral welded pipe, a second spiral welded pipe and a sleeve; the first spiral welded pipe is in threaded connection with the second spiral welded pipe; the sleeve is sleeved at the joint of the first spiral welded pipe and the second spiral welded pipe; two sides of the hole of the sleeve are provided with tapered holes, and the hole diameter of each tapered hole is reduced from outside to inside; conical surfaces are arranged on the outer walls of the first spiral welded pipe and the second spiral welded pipe; when the first spiral welded pipe and the second spiral welded pipe are in a screwing state, the conical surfaces of the outer walls of the first spiral welded pipe and the second spiral welded pipe are attached to the conical hole of the sleeve; the utility model discloses in through first spiral welded tube second spiral welded tube and the sleeve between extrude each other, can carry out the pretension to the threaded connection of first spiral welded tube and second spiral welded tube, can carry out the secondary to first spiral welded tube and second spiral welded tube moreover and seal, improve the leakproofness that spiral welded tube is connected between the two.
Description
Technical Field
The utility model relates to a spiral weld pipe field, concretely relates to spiral weld pipe that leakproofness is strong.
Background
The spiral welded pipe plays a great role in conveying fuel gas and transportation. With the planning and construction of a plurality of major pipeline projects at home and abroad, high value-added products such as large-deformation pipeline steel, high-strength-level hot-bending elbows, thick-specification low-temperature pipe fittings and the like show good market competitiveness and larger market demand, and spiral welded pipes have the following advantages that steel pipes with different diameters can be produced by using strip steel with the same width, and especially the steel pipes with large diameters can be produced by using narrow strip steel; compared with a straight welded pipe, the straight welded pipe has flexible operation and convenient change and adjustment; the equipment has light weight and low initial investment. The device can be made into a trailer type flow unit, and welded pipes are directly produced in a construction site for laying pipelines; and the mechanization and automation are easy to realize. When the existing spiral welded pipe and the existing spiral welded pipe are connected, most of the existing spiral welded pipe is in threaded connection, but the sealing performance of the connection position is low, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The not enough to prior art, the utility model provides a spiral welded pipe that leakproofness is strong improves the sealing performance that spiral welded pipe is connected between the two.
The utility model provides a following technical scheme:
a spiral welded pipe with strong sealing performance comprises a first spiral welded pipe, a second spiral welded pipe and a sleeve; the first spiral welded pipe is in threaded connection with the second spiral welded pipe; the sleeve is sleeved at the joint of the first spiral welded pipe and the second spiral welded pipe; two sides of the hole of the sleeve are provided with tapered holes, and the hole diameter of each tapered hole is reduced from outside to inside; conical surfaces are arranged on the outer walls of the first spiral welded pipe and the second spiral welded pipe; when the first spiral welded pipe and the second spiral welded pipe are in a screwing state, the conical surfaces of the outer walls of the first spiral welded pipe and the second spiral welded pipe are attached to the conical hole of the sleeve.
Preferably, the first spiral welded pipe is sequentially provided with a first cylindrical shaft section, a first conical shaft section and a connecting shaft section along the axial direction; the diameter of the connecting shaft section is smaller than that of the first cylindrical shaft section; the connecting shaft section is in threaded connection with a hole of the second spiral welded pipe; the second spiral welded pipe is axially and sequentially provided with a second cylindrical shaft section and a second conical shaft section; the shaft diameter of one side of the first conical shaft section, which is close to the second spiral welded pipe, is reduced; and the shaft diameter of one side of the second conical shaft section, which is close to the first spiral welded pipe, is reduced.
Preferably, a sealing ring is arranged between the first spiral welded pipe and the second spiral welded pipe; the sealing ring is sleeved outside the connecting shaft section.
Preferably, two sealing rings are arranged between the first spiral welded pipe and the second spiral welded pipe; and a metal ring is arranged between the two sealing rings.
Preferably, a sealing layer is arranged on the hole wall of the sleeve; the sealing layer is made of rubber.
Compared with the prior art, the utility model has the advantages of it is following and effect:
in the utility model, when the first spiral welded pipe and the second spiral welded pipe are in a screwing state, the outer wall conical surfaces of the first spiral welded pipe and the second spiral welded pipe are attached to the conical hole of the sleeve; not only can carry out the pretension to the threaded connection of first spiral welded tube and second spiral welded tube, can carry out secondary seal to first spiral welded tube and second spiral welded tube moreover, improve the leakproofness of being connected between the spiral welded tube and the two.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a front view of a spiral welded pipe with high sealing performance.
Fig. 2 is a cross-sectional view of a first spiral welded pipe of the present invention.
Fig. 3 is a cross-sectional view of a second spiral welded pipe of the present invention.
Fig. 4 is a cross-sectional view of the sleeve of the present invention.
In the figure: 1 is first spiral welded pipe, 111 is first cylinder shaft section, 112 is first circular cone shaft section, 113 is connecting shaft section, 12 is first through-hole, 2 is the sleeve, 21 is the sealing layer, 221 is first section shoulder hole, 222 is second section shoulder hole, 223 is third section shoulder hole, 3 is second spiral welded pipe, 311 is second cylinder shaft section, 312 is second circular cone shaft section, 32 is the second intercommunicating pore, 4 is first sealing washer, 5 is the metal ring, 6 is the second sealing washer.
Detailed Description
The utility model discloses a concrete implementation way does:
referring to fig. 1-4, a spiral welded pipe with high sealing performance includes a first spiral welded pipe 1, a second spiral welded pipe 3, and a sleeve 2; the first spiral welded pipe 1 is in threaded connection with the second spiral welded pipe 3; the first spiral welded pipe 1 is sequentially provided with a first cylindrical shaft section 111, a first conical shaft section 112 and a connecting shaft section 113 along the axial direction; the diameter of the connecting shaft segment 113 is smaller than the diameter of the first cylindrical shaft segment 111; the first through hole 12 axially penetrates through the first spiral welded pipe 1; the second communication hole 32 axially penetrates the second spiral welded pipe 3; the connecting shaft section 113 is in threaded connection with the second communication hole 32; the second spiral welded pipe 3 is axially and sequentially provided with a second cylindrical shaft section 311 and a second conical shaft section 312; the shaft diameter of the first conical shaft section 112 close to one side of the second spiral welded pipe 3 is reduced; the shaft diameter of the second conical shaft section 312 close to one side of the first spiral welded pipe 1 is reduced.
The sleeve 2 is sleeved at the joint of the first spiral welded pipe 1 and the second spiral welded pipe 3; the sleeve 2 is provided with a first section of stepped hole 221, a second section of stepped hole 222 and a third section of stepped hole 223 in sequence along the axial direction; the first-section stepped hole 221 and the third-section stepped hole 223 are tapered holes; the diameters of the first-section stepped hole 221 and the third-section stepped hole 223 are reduced from outside to inside; when the first spiral welded pipe 1 and the second spiral welded pipe 3 are in a screwing state, the outer wall conical surface of the first conical shaft section 112 is attached to the first section stepped hole 221, and the outer wall conical surface of the second conical shaft section 312 is attached to the third section stepped hole 223; the first spiral welded pipe 1, the second spiral welded pipe 3 and the sleeve 2 are mutually extruded, the threaded connection of the first spiral welded pipe 1 and the second spiral welded pipe 3 is pre-tightened, the first spiral welded pipe 1 and the second spiral welded pipe 3 can be sealed for the second time, and the sealing property of the connection between the spiral welded pipes is improved; a sealing layer 21 is arranged on the hole wall of the sleeve 2, so that the joint tightness of the sleeve 2 and the first spiral welded pipe 1 and the second spiral welded pipe 3 is ensured; the sealing layer 21 is made of rubber.
A first sealing ring 4 and a second sealing ring 6 are arranged between the first spiral welded pipe 1 and the second spiral welded pipe 3, so that the connection tightness of the first spiral welded pipe 1 and the second spiral welded pipe 3 is improved; the first sealing ring 4 and the second sealing ring 6 are sleeved outside the connecting shaft section; a metal ring 5 is arranged between the first sealing ring 4 and the second sealing ring 6, so that the first sealing ring 4 and the second sealing ring 6 are prevented from being adhered; the total thickness of the first sealing ring 4, the second sealing ring 6 and the metal ring 5 is equal to the length of the second section of the stepped hole 222.
The working principle is as follows: a worker sleeves the first sealing ring 4, the metal ring 5 and the second sealing ring 6 on the connecting shaft section 113 so as to improve the sealing property of the connection between the first spiral welded pipe 1 and the second spiral welded pipe 3; connecting the first spiral welded pipe 1 with the second spiral welded pipe 3 in a threaded manner, and sleeving a sleeve 2 at the joint of the first spiral welded pipe 1 and the second spiral welded pipe 3; the first conical shaft section 112 of the first spiral welded pipe 1 is rotated to extrude the first section of the stepped hole 221 of the sleeve 2, the outer wall conical surface of the second conical shaft section 312 extrudes the third section of the stepped hole 223, the threaded connection of the first spiral welded pipe 1 and the second spiral welded pipe 3 is pre-tightened through mutual extrusion of the first spiral welded pipe 1, the second spiral welded pipe 3 and the sleeve 2, the first spiral welded pipe 1 and the second spiral welded pipe 3 can be secondarily sealed, and the sealing performance of connection between the spiral welded pipes is improved; the sealing layer 21 improves the sealing property of the joint of the sleeve 2 and the first spiral welded pipe 1 and the second spiral welded pipe 3.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a spiral weld pipe that leakproofness is strong which characterized in that: comprises a first spiral welded pipe, a second spiral welded pipe and a sleeve; the first spiral welded pipe is in threaded connection with the second spiral welded pipe; the sleeve is sleeved at the joint of the first spiral welded pipe and the second spiral welded pipe; two sides of the hole of the sleeve are provided with tapered holes, and the hole diameter of each tapered hole is reduced from outside to inside; conical surfaces are arranged on the outer walls of the first spiral welded pipe and the second spiral welded pipe; when the first spiral welded pipe and the second spiral welded pipe are in a screwing state, the conical surfaces of the outer walls of the first spiral welded pipe and the second spiral welded pipe are attached to the conical hole of the sleeve.
2. The spiral welded pipe with high sealing performance as claimed in claim 1, wherein: the first spiral welded pipe is sequentially provided with a first cylindrical shaft section, a first conical shaft section and a connecting shaft section along the axial direction; the diameter of the connecting shaft section is smaller than that of the first cylindrical shaft section; the connecting shaft section is in threaded connection with a hole of the second spiral welded pipe; the second spiral welded pipe is axially and sequentially provided with a second cylindrical shaft section and a second conical shaft section; the shaft diameter of one side of the first conical shaft section, which is close to the second spiral welded pipe, is reduced; and the shaft diameter of one side of the second conical shaft section, which is close to the first spiral welded pipe, is reduced.
3. The spiral welded pipe with high sealing performance as claimed in claim 2, wherein: a sealing ring is arranged between the first spiral welded pipe and the second spiral welded pipe; the sealing ring is sleeved outside the connecting shaft section.
4. A spiral welded pipe with high sealing performance as claimed in claim 3, wherein: two sealing rings are arranged between the first spiral welded pipe and the second spiral welded pipe; and a metal ring is arranged between the two sealing rings.
5. The spiral welded pipe with high sealing performance as claimed in claim 1, wherein: a sealing layer is arranged on the hole wall of the sleeve; the sealing layer is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375634.6U CN212480413U (en) | 2020-03-23 | 2020-03-23 | Spiral welded pipe that leakproofness is strong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375634.6U CN212480413U (en) | 2020-03-23 | 2020-03-23 | Spiral welded pipe that leakproofness is strong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212480413U true CN212480413U (en) | 2021-02-05 |
Family
ID=74457798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020375634.6U Active CN212480413U (en) | 2020-03-23 | 2020-03-23 | Spiral welded pipe that leakproofness is strong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212480413U (en) |
-
2020
- 2020-03-23 CN CN202020375634.6U patent/CN212480413U/en active Active
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