CN212480395U - Novel composite galvanized pipe - Google Patents
Novel composite galvanized pipe Download PDFInfo
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- CN212480395U CN212480395U CN202020495190.XU CN202020495190U CN212480395U CN 212480395 U CN212480395 U CN 212480395U CN 202020495190 U CN202020495190 U CN 202020495190U CN 212480395 U CN212480395 U CN 212480395U
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- galvanized pipe
- flange
- plug piece
- plug
- wall
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Abstract
The utility model provides a novel composite galvanized pipe, which comprises a galvanized pipe body, an inner lining plastic pipe, an end flange and a plug piece, wherein the inner lining plastic pipe is attached on the inner wall of the galvanized pipe body; the end flange comprises an inner side pressing edge and a flange end face which are vertically connected, the inner side pressing edge is annular, the inner side pressing edge presses the lining plastic pipe, and the two flange end faces extend out of the galvanized pipe bodies and are connected with the end parts of the two adjacent galvanized pipe bodies through bolt and nut assemblies; be equipped with the plug piece hole on the flange terminal surface, the axial extension that is on a parallel with galvanized pipe body is followed in the plug piece hole, and the plug piece jam is downthehole in the plug piece, and the plug piece is the arc structure, the outer wall of the inner wall laminating galvanized pipe body of plug piece. The utility model discloses lead to the inside lining to mould the problem that breaks away from between pipe and the galvanized pipe body when can solving intraductal fluid temperature shock drop.
Description
Technical Field
The utility model belongs to the technical field of the galvanized pipe, concretely relates to novel compound galvanized pipe.
Background
The hot dip galvanized steel pipe has wide application in construction, machinery, fire fighting, electric power and expressway, and the hot dip galvanized or electrogalvanized layer on the surface of the galvanized steel pipe can increase the corrosion resistance of the steel pipe and prolong the service life.
The galvanized pipe is applied to the fields of chemical engineering, petroleum and the like, in order to protect the galvanized pipe body and further improve the corrosion resistance and the service life of the inner wall of the pipe, a composite galvanized pipe is generally used, a layer of inner lining plastic pipe is additionally arranged on the inner wall of part of the composite galvanized pipe, and the inner lining plastic pipe can be attached to the inner wall of the galvanized pipe body in a sealant coating mode. However, when the temperature of the fluid in the pipe suddenly changes, especially when the temperature suddenly decreases, the plastic-lined pipe can be separated from the galvanized pipe body due to the cold contraction effect, so that the galvanized pipe cannot stably and smoothly convey the fluid, and the service life of the galvanized pipe is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel compound galvanized pipe to lead to the inside lining to mould the problem that breaks away from between pipe and the galvanized pipe body when solving intraductal fluid temperature dip.
The utility model provides a following technical scheme:
a novel composite galvanized pipe comprises a galvanized pipe body, a lining plastic pipe, an end flange and a plug piece, wherein the lining plastic pipe is attached to the inner wall of the galvanized pipe body; the end flange comprises an inner side pressing edge and a flange end face which are vertically connected, the inner side pressing edge is annular, the inner side pressing edge presses the lining plastic pipe, and the two flange end faces extend out of the galvanized pipe bodies and are connected with the end parts of two adjacent galvanized pipe bodies through bolt and nut assemblies; the plug piece is characterized in that a plug piece hole is formed in the end face of the flange, the plug piece hole extends along the axial direction parallel to the galvanized pipe body, the plug piece is tightly plugged in the plug piece hole, the plug piece is of an arc-shaped structure, and the inner wall of the plug piece is attached to the outer wall of the galvanized pipe body.
Preferably, the outer wall of the plug piece is provided with a positioning groove, a positioning piece is compressed between the bolt head of the bolt and nut assembly and the end face of the flange, the thickness of the positioning piece is matched with the groove width of the positioning groove, and the end part of the positioning piece is inserted into the positioning groove.
Preferably, the positioning piece is tightly attached to the side wall of the end face of the flange.
Preferably, the outer wall of the plug sheet is covered with a buffer layer, and the buffer layer extrudes the plug sheet hole upwards.
Preferably, the end part of the lining plastic pipe is provided with a flange mounting step, the inner side pressing of the pipe is arranged in the flange mounting step, and the inner diameter of the inner side pressing of the pipe is equal to the inner diameter of the lining plastic pipe.
Preferably, at least two plug holes are symmetrically arranged on the end face of the flange.
The utility model has the advantages that:
the inner pressing edge of the end flange of the utility model can press the end of the lining plastic pipe; stretch out the galvanized pipe body outside at the tip flange and set up the chock piece hole, the chock piece is plugged in the chock piece downthehole to with intraductal blank pressing cooperation, compress tightly the tip of galvanized pipe from the inside and outside both sides of galvanized pipe simultaneously, prevent to appear the inside lining because of the expend with heat and contract with cold effect of intraductal fluid temperature change and mould the phenomenon that pipe and galvanized pipe body break away from.
The section of the plug sheet is arc-shaped, the inner wall of the plug sheet is attached to the outer wall of the galvanized pipe body and is connected with the galvanized pipe body into a whole, the stress is more balanced, the radial tension applied by the plastic pipe with the inner lining can be effectively borne, and the service lives of the composite galvanized pipe and the plug sheet are prolonged.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a front view structural schematic diagram of the end flange of the present invention;
labeled as: 1. a galvanized pipe body; 2. lining a plastic pipe; 3. an end flange; 4. a plug sheet; 5. mounting a step on the flange; 6. pressing the edges in the tube; 7. a flange end face; 8. a bolt and nut assembly; 9. a plug hole; 10. positioning a groove; 11. positioning plates; 12. a buffer layer.
Detailed Description
As shown in fig. 1 and 2, the novel composite galvanized pipe comprises a galvanized pipe body 1, an inner lining plastic pipe 2, an end flange 3 and a plug piece 4.
The lining plastic pipe 2 is attached to the inner wall of the galvanized pipe body 1, and the end part of the lining plastic pipe 2 is provided with a flange mounting step 5 for assembling an end flange 3.
The end flange 3 comprises an inner pressing edge 6 and a flange end face 7 which are vertically connected, the inner pressing edge 6 is arranged in the flange mounting step 5 and tightly presses the lining plastic pipe 2, the inner pressing edge 6 is annular, and the inner diameter of the inner pressing edge 6 is equal to the inner diameter of the lining plastic pipe 2. The end surfaces 7 of the two flanges extend out of the galvanized pipe bodies 1 and then are connected with the end parts of the two adjacent galvanized pipe bodies 1 through bolt and nut assemblies 8; be equipped with plug piece hole 9 on the flange terminal surface 7, plug piece hole 9 is along being on a parallel with the axial extension of galvanized pipe body 1, and 4 stopper of plug piece are tight in plug piece hole 9, and plug piece 4 is the arc structure, and the outer wall of the galvanized pipe body 1 of the inner wall laminating of plug piece 4, and plug piece 4 and intraductal blank pressing 6 cooperation, compress tightly the pipe tip from the outside and the inboard of this compound galvanized pipe simultaneously, prevent that the inside lining from moulding pipe 2 and break away from with galvanized pipe body 1 because of fluid temperature slump.
In order to assemble the plug piece 4 conveniently, a positioning groove 10 is formed in the outer wall of the plug piece 4, a positioning piece 11 is compressed between the bolt head of the bolt-nut assembly 8 and the flange end face 7, the thickness of the positioning piece 11 is matched with the groove width of the positioning groove 10, the end portion of the positioning piece 11 is inserted into the positioning groove 10, a hole can be drilled in the positioning piece 11, a bolt penetrates through the hole and then is assembled with the nut, and after the bolt is screwed down, the positioning piece 11 is tightly attached to the side wall of the flange end face 7. The locating plate 11 locates the plug piece 4 on the end flange 3 quickly, and the plug piece 4 is not needed to be welded and fixed by using a welding tool additionally, so that the assembling is convenient, and the disassembly can be flexible.
The outer wall of the plug piece 4 is covered with the buffer layer 12, the plug piece hole 9 can be upwards extruded after the buffer layer 12 is stressed, the buffer layer 12 is made of a material with a small compression amount, the plug piece 4 can be prevented from extruding and deforming the plug piece hole 9 due to the fact that the pulling force applied by the lining plastic pipe 2 is too large, and the service life of the end flange 3 is prolonged.
Four plug sheet holes 9 are symmetrically arranged on the flange end face 7, six or eight plug sheet holes can be configured, and the lining plastic pipe 2 is simultaneously pressed from multiple directions, so that the connection between the lining plastic pipe 2 and the galvanized pipe body 1 is tighter.
The assembly method of the composite galvanized pipe comprises the following steps: install the intraductal blank pressing 6 of tip flange 3 in the flange mounting step 5 of pipe 2 is moulded to the inside lining, outside flange terminal surface 7 stretched out galvanized pipe body 1, then fill in the plug piece hole 9 of flange terminal surface with plug piece 4, during the installation bolt nut subassembly 8, vertically fill in the constant head tank 10 of plug piece 4 with the tip of spacer plate 11 in, tighten the nut again to on being fixed in tip flange 3 with plug piece 4, make it hug closely galvanized pipe body 1's outer wall.
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 (6)
1. The novel composite galvanized pipe is characterized by comprising a galvanized pipe body, a lining plastic pipe, an end flange and a plug piece, wherein the lining plastic pipe is attached to the inner wall of the galvanized pipe body; the end flange comprises an inner side pressing edge and a flange end face which are vertically connected, the inner side pressing edge is annular, the inner side pressing edge presses the lining plastic pipe, and the two flange end faces extend out of the galvanized pipe bodies and are connected with the end parts of two adjacent galvanized pipe bodies through bolt and nut assemblies; the plug piece is characterized in that a plug piece hole is formed in the end face of the flange, the plug piece hole extends along the axial direction parallel to the galvanized pipe body, the plug piece is tightly plugged in the plug piece hole, the plug piece is of an arc-shaped structure, and the inner wall of the plug piece is attached to the outer wall of the galvanized pipe body.
2. The novel composite galvanized pipe according to claim 1, wherein a positioning groove is formed in the outer wall of the plug piece, a positioning piece is compressed between the bolt head of the bolt-nut assembly and the end face of the flange, the thickness of the positioning piece is matched with the groove width of the positioning groove, and the end of the positioning piece is inserted into the positioning groove.
3. The novel composite galvanized pipe according to claim 2, characterized in that the positioning piece is tightly attached to the side wall of the end surface of the flange.
4. The novel composite galvanized pipe according to claim 3, wherein a buffer layer is coated on the outer wall of the plug sheet, and the buffer layer extrudes the plug sheet hole upwards.
5. The novel composite galvanized pipe according to claim 4, wherein a flange mounting step is arranged at the end of the inner lining plastic pipe, the inner pressing edge of the inner lining plastic pipe is arranged in the flange mounting step, and the inner diameter of the inner pressing edge of the inner lining plastic pipe is equal to the inner diameter of the inner lining plastic pipe.
6. The novel composite galvanized pipe according to claim 5, characterized in that at least two plug holes are symmetrically arranged on the end surface of the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020495190.XU CN212480395U (en) | 2020-04-07 | 2020-04-07 | Novel composite galvanized pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020495190.XU CN212480395U (en) | 2020-04-07 | 2020-04-07 | Novel composite galvanized pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212480395U true CN212480395U (en) | 2021-02-05 |
Family
ID=74458371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020495190.XU Active CN212480395U (en) | 2020-04-07 | 2020-04-07 | Novel composite galvanized pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212480395U (en) |
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2020
- 2020-04-07 CN CN202020495190.XU patent/CN212480395U/en active Active
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