CN212935414U - Corrosion-resistant composite steel pipe structure - Google Patents
Corrosion-resistant composite steel pipe structure Download PDFInfo
- Publication number
- CN212935414U CN212935414U CN202021309780.5U CN202021309780U CN212935414U CN 212935414 U CN212935414 U CN 212935414U CN 202021309780 U CN202021309780 U CN 202021309780U CN 212935414 U CN212935414 U CN 212935414U
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- Prior art keywords
- pipe
- stainless steel
- convex
- convex ring
- polytetrafluoroethylene
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- 238000005260 corrosion Methods 0.000 title claims abstract description 39
- 230000007797 corrosion Effects 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 72
- 239000010935 stainless steel Substances 0.000 claims abstract description 72
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 62
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 60
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 60
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000032683 aging Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to a corrosion-resistant composite steel pipe structure, which is characterized by comprising a stainless steel inner pipe, a polytetrafluoroethylene outer pipe and a stainless steel limiting pipe, wherein the stainless steel inner pipe is provided with a first inner hole and an inner thread; the polytetrafluoroethylene outer pipe is provided with a second inner hole, a first convex ring part, a plurality of convex parts, a sleeve penetrating hole and a second convex ring part, and the polytetrafluoroethylene outer pipe is sleeved on the stainless steel inner pipe; the stainless steel limiting pipe is provided with a third inner hole, an external thread, a third convex ring part and a plurality of embedded holes; the external thread is in threaded connection with the internal thread, each nesting hole is respectively sleeved on the corresponding boss, and the third convex ring part is positioned on the inner side of the second convex ring part. The utility model discloses an outer polytetrafluoroethylene outer tube that is can play fine insulating effect like this to help improving the security, and the polytetrafluoroethylene outer tube can be dismantled, this helps reducing the maintenance cost, and this corrosion-resistant composite steel pipe structure has the advantage that the reliability is high, corrosion resisting property is good.
Description
Technical Field
The utility model relates to a tubular product field, especially a corrosion-resistant composite steel pipe structure.
Background
Currently, many conduits are made of stainless steel in order to increase their structural strength. Because the existing conduit only adopts a stainless steel pipe, when a lead in the conduit is damaged, the conduit is also electrified, so that safety accidents are easily caused. Meanwhile, the existing conduit pipe also has the problem of poor corrosion resistance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem and not enough, provide a corrosion-resistant composite steel pipe structure, this corrosion-resistant composite steel pipe structure's skin is the polytetrafluoroethylene outer tube, can play fine insulating effect like this to help improving the security, and the polytetrafluoroethylene outer tube can be dismantled, this helps reducing the maintenance cost, this corrosion-resistant composite steel pipe structure has the advantage that the reliability is high, corrosion resisting property is good.
The technical scheme of the utility model is realized like this:
a corrosion-resistant composite steel pipe structure is characterized by comprising a stainless steel inner pipe, a polytetrafluoroethylene outer pipe and a stainless steel limiting pipe, wherein a first inner hole is formed in the stainless steel inner pipe, and an internal thread is formed in the hole wall of the first inner hole; a second inner hole is formed in the polytetrafluoroethylene outer tube, a first convex ring portion is integrally formed on the outer circumferential surface of the end portion of the polytetrafluoroethylene outer tube, a plurality of convex portions are integrally formed on the outer end face of the first convex ring portion, the convex portions are arranged in an orifice surrounding the second inner hole, sleeve penetrating holes are formed in the end face of each convex portion respectively and penetrate through the sleeve penetrating holes to the inner end face of the first convex ring portion, a circle of second convex ring portion is integrally formed on the peripheral side edge of the outer end face of the first convex ring portion, the polytetrafluoroethylene outer tube is detachably sleeved on the stainless steel inner tube, and the end face of the polytetrafluoroethylene outer tube and the end face of the stainless steel inner tube are located in the same plane; a third inner hole is formed in the stainless steel limiting pipe, an external thread matched with the internal thread is formed in the circumferential surface of the stainless steel limiting pipe, a third convex ring portion is integrally formed on the circumferential surface of one end of the stainless steel limiting pipe, a plurality of nesting holes are formed in the outer end face of the third convex ring portion, the nesting holes penetrate through the inner end face of the third convex ring portion, and the nesting holes are in one-to-one correspondence with the positions of the convex portions; the other end of the stainless steel limiting pipe is arranged in the first inner hole, the outer thread is screwed on the inner thread, the nesting holes are respectively sleeved on the corresponding bosses, and the third convex ring part is located on the inner side of the second convex ring part.
Preferably, the outer surface of the stainless steel inner tube is provided with a plurality of convex bar portions, the length direction of each convex bar portion is enabled to be the same as the length direction of the stainless steel inner tube, the hole wall of the second inner hole is provided with a plurality of strip-shaped grooves, the length direction of each strip-shaped groove is enabled to be the same as the length direction of the polytetrafluoroethylene outer tube, the positions of the strip-shaped grooves and the positions of the convex bar portions are enabled to be in one-to-one correspondence, the strip-shaped grooves extend to the end faces of the two ends of the polytetrafluoroethylene outer tube, and the strip-shaped grooves are respectively clamped on the corresponding convex bar portions.
The utility model has the advantages that: the utility model discloses an among the corrosion-resistant composite steel pipe structure, through can dismantle the ground suit with the polytetrafluoroethylene outer tube on the stainless steel inner tube, can play fine insulating effect like this, can make the tubular construction have high structural strength again simultaneously, this corrosion-resistant composite steel pipe structure's reliability is very high. Because the stainless steel inner tube and the stainless steel limiting tube are made of stainless steel and the polytetrafluoroethylene outer tube is made of polytetrafluoroethylene, the stainless steel inner tube, the polytetrafluoroethylene outer tube and the stainless steel limiting tube have good corrosion resistance, and the composite steel tube structure has good corrosion resistance. Because the ageing speed of polytetrafluoroethylene outer tube is different with the stainless steel inner tube, and the ageing speed of polytetrafluoroethylene outer tube is generally faster than the stainless steel inner tube, through making the polytetrafluoroethylene outer tube adopt the mounting means installation that can dismantle like this, can be at the ageing or impaired back of polytetrafluoroethylene outer tube, conveniently change the polytetrafluoroethylene outer tube of renewal, this just need not wholly scrap corrosion-resistant composite steel pipe structure, this maintenance cost that can reduce corrosion-resistant composite steel pipe structure effectively. The through-hole is formed in the protruding portion, so that the screw can be conveniently inserted, two corrosion-resistant composite steel pipe structures can be connected in series through the screw, and the applicability of the corrosion-resistant composite steel pipe structures is improved. Because polytetrafluoroethylene outer tube, first bulge loop portion, second bulge loop portion and each bellying structure as an organic whole, they all have fine insulating action like this, and first bulge loop portion can play the purpose of sheltering from third bulge loop portion with second bulge loop portion, through the setting of bellying, can form isolated effect in the nested hole to avoid screw direct contact to third bulge loop portion, can further improve this corrosion-resistant composite steel pipe structure's security like this. Through the arrangement of the stainless steel limiting pipe, the third convex ring part is integrally formed on the stainless steel limiting pipe, so that the polytetrafluoroethylene outer pipe can be well limited by the third convex ring part, and the situation that the polytetrafluoroethylene outer pipe slides down is avoided; and through the setting of third bulge loop portion to make the bellying inlay and adorn on third bulge loop portion, when wearing to put the screw in the trepanning like this, the screw can pass third bulge loop portion naturally, when concatenating two corrosion-resistant composite steel pipe structures together through the screw like this, can guarantee that the junction has high structural strength.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the section a-a in fig. 1 according to the present invention.
Fig. 3 is one of the structural schematic diagrams of the stainless steel inner tube of the present invention.
Fig. 4 is a second schematic structural view of the stainless steel inner tube according to the present invention.
Fig. 5 is a schematic structural view of the middle ptfe outer tube of the present invention.
Fig. 6 is a second schematic structural view of the middle ptfe outer tube of the present invention.
Fig. 7 is a schematic structural view of the stainless steel spacing tube of the present invention.
Detailed Description
As shown in fig. 1, the corrosion-resistant composite steel pipe structure of the present invention comprises a stainless steel inner pipe 1, a polytetrafluoroethylene outer pipe 2, and a stainless steel limiting pipe 3, wherein, as shown in fig. 3 and 4, a first inner hole 11 is formed on the stainless steel inner pipe 1, and an inner thread 12 is formed on a hole wall of the first inner hole 11; as shown in fig. 1, 2 and 5, a second inner hole 21 is formed on the polytetrafluoroethylene outer tube 2, a first protruding ring portion 22 is integrally formed on the outer circumferential surface of the end portion of the polytetrafluoroethylene outer tube 2, a plurality of protruding portions 23 are integrally formed on the outer end surface of the first protruding ring portion 22, the protruding portions 23 are arranged in an orifice surrounding the second inner hole 21, sleeve holes 24 are respectively formed on the end surfaces of the protruding portions 23, the sleeve holes 24 penetrate through the inner end surface of the first protruding ring portion 22, a circle of second protruding ring portion 25 is integrally formed on the peripheral side edge of the outer end surface of the first protruding ring portion 22, the polytetrafluoroethylene outer tube 2 is detachably sleeved on the stainless steel inner tube 1, and the end surface of the polytetrafluoroethylene outer tube 2 and the end surface of the stainless steel inner tube 1 are located in the same plane; as shown in fig. 1 and 7, a third inner hole 31 is formed on the stainless steel limiting tube 3, an outer thread 32 matched with the inner thread 12 is formed on the circumferential surface of the stainless steel limiting tube 3, a third collar portion 33 is integrally formed on the circumferential surface of one end of the stainless steel limiting tube 3, a plurality of nesting holes 34 are formed on the outer end surface of the third collar portion 33, the nesting holes 34 penetrate through the inner end surface of the third collar portion 33, and the nesting holes 34 correspond to the positions of the protrusions 23 one by one; as shown in fig. 1, the other end of the stainless steel limiting pipe 3 is placed in the first inner hole 11, the external thread 32 is screwed on the internal thread 12, the nesting holes 34 are respectively sleeved on the corresponding bosses 23, and the third collar part 33 is positioned on the inner side of the second collar part 25. The utility model discloses an among the corrosion-resistant composite steel pipe structure, through can dismantle ground suit with polytetrafluoroethylene outer tube 2 on stainless steel inner tube 1, can play fine insulating effect like this, can make the tubular construction have high structural strength again simultaneously, this corrosion-resistant composite steel pipe structure's reliability is very high. Because stainless steel inner tube 1 and stainless steel spacing pipe 3 are made by the stainless steel to and polytetrafluoroethylene outer tube 2 is made by polytetrafluoroethylene, stainless steel inner tube 1, polytetrafluoroethylene outer tube 2 and stainless steel spacing pipe 3 all have fine corrosion resisting property like this, so this compound steel pipe structure has very good corrosion resisting property. Because the ageing speed of polytetrafluoroethylene outer tube 2 is different with stainless steel inner tube 1, and the ageing speed of polytetrafluoroethylene outer tube 2 is generally faster than stainless steel inner tube 1, through making polytetrafluoroethylene outer tube 2 adopt the mounting means installation that can dismantle like this, can be in polytetrafluoroethylene outer tube 2 ageing or impaired back, convenient polytetrafluoroethylene outer tube 2 of renewal, this just need not wholly scrap corrosion-resistant composite steel pipe structure, this maintenance cost that can reduce corrosion-resistant composite steel pipe structure effectively. The through holes 24 are formed in the protruding portions 23, so that screws can be conveniently inserted, two corrosion-resistant composite steel pipe structures can be connected in series through the screws, and the applicability of the corrosion-resistant composite steel pipe structures is improved. Because polytetrafluoroethylene outer tube 2, first bulge loop portion 22, second bulge loop portion 25 and each bellying 23 structure as an organic whole, they all have fine insulating action like this, and first bulge loop portion 22 and second bulge loop portion 25 can play the purpose of sheltering from third bulge loop portion 33, through the setting of bellying 23, can form isolated effect in nested hole 34, in order to avoid the screw direct contact to third bulge loop portion 33, can further improve this corrosion-resistant composite steel pipe structure's security like this. Through the arrangement of the stainless steel limiting pipe 3 and the integral forming of the third convex ring part 33 on the stainless steel limiting pipe 3, the third convex ring part 33 can play a good limiting role on the polytetrafluoroethylene outer pipe 2, so that the situation that the polytetrafluoroethylene outer pipe 2 slides down is avoided; and through the setting of third bulge loop portion 33 to make bellying 23 inlay and adorn on third bulge loop portion 33, when wearing to put the screw in trepanning 24 like this, the screw can pass third bulge loop portion 33 naturally, when concatenating two corrosion-resistant composite steel pipe structures together through the screw like this, can guarantee that the junction has high structural strength.
During the process of screwing the external thread 32 onto the internal thread 12, the polytetrafluoroethylene outer tube 2 needs to be compressed so as to avoid the influence of the lug boss 23 on the polytetrafluoroethylene outer tube 2 on the screwing of the stainless steel limiting tube 3; after the stainless steel limiting pipe 3 is screwed down, the polytetrafluoroethylene outer pipe 2 is loosened, and then the lug boss 23 is embedded into the nesting hole 34, so that the assembly of the corrosion-resistant composite steel pipe structure can be completed. When the stainless steel limiting pipe 3 needs to be screwed out, the polytetrafluoroethylene outer pipe 2 is compressed, and then the stainless steel limiting pipe 3 can be screwed out.
Wherein, the purpose of preventing the stainless steel limiting pipe 3 from rotating can be achieved through the convex parts 23, which is helpful for improving the reliability of the installation and the positioning of the stainless steel limiting pipe 3.
As shown in FIG. 1, in order to reduce the difficulty of compressing the polytetrafluoroethylene outer tube 2, the depth H of the boss 23 inserted into the nesting hole 34 may be 1.5mm to 2.5 mm. Can control polytetrafluoroethylene outer tube 2's compressive strain like this, can make things convenient for the tightening of spacing pipe 3 of stainless steel again, can also guarantee that bellying 23 has good limiting displacement, this convenience that helps improving the equipment of corrosion-resistant composite steel tube structure.
In the actual manufacturing process, the stainless steel limiting pipes 3 can be arranged at the two ends of the corrosion-resistant composite steel pipe structure, and the first convex ring part 22 and the second convex ring part 25 are correspondingly made, so that the purpose of connecting a plurality of corrosion-resistant composite steel pipe structures in series can be met.
As shown in fig. 2, 4 and 6, a plurality of convex bar portions 13 are arranged on the outer surface of the stainless steel inner tube 1, the length direction of each convex bar portion 13 is the same as the length direction of the stainless steel inner tube 1, a plurality of groove portions 211 are arranged on the hole wall of the second inner hole 21, the length direction of each groove portion 211 is the same as the length direction of the polytetrafluoroethylene outer tube 2, the positions of the groove portions 211 are in one-to-one correspondence with the positions of the convex bar portions 13, each groove portion 211 extends to the end faces of the two ends of the polytetrafluoroethylene outer tube 2, and each groove portion 211 is respectively clamped on the corresponding convex bar portion 13. Through the arrangement of the convex strip parts 13 and the strip-shaped grooves 211, the situation that the polytetrafluoroethylene outer tube 2 rotates randomly can be avoided, and the reliability of installation and positioning of the polytetrafluoroethylene outer tube 2 is further improved.
Claims (2)
1. The utility model provides a corrosion-resistant compound steel pipe structure which characterized in that: the stainless steel pipe comprises a stainless steel inner pipe (1), a polytetrafluoroethylene outer pipe (2) and a stainless steel limiting pipe (3), wherein a first inner hole (11) is formed in the stainless steel inner pipe (1), and an inner thread (12) is formed in the hole wall of the first inner hole (11); a second inner hole (21) is formed on the polytetrafluoroethylene outer tube (2), a first convex ring part (22) is integrally formed on the outer circumferential surface of the end part of the polytetrafluoroethylene outer tube (2), a plurality of convex parts (23) are integrally formed on the outer end surface of the first convex ring part (22), and all the convex parts (23) are arranged in the shape of an orifice surrounding the second inner hole (21), the end surfaces of all the convex parts (23) are respectively provided with a sleeve hole (24), and each sleeve hole (24) penetrates through the inner end surface of the first convex ring part (22), a circle of second convex ring part (25) is integrally formed on the peripheral side edge of the outer end surface of the first convex ring part (22), the polytetrafluoroethylene outer pipe (2) can be detachably sleeved on the stainless steel inner pipe (1), the end surface of the polytetrafluoroethylene outer pipe (2) and the end surface of the stainless steel inner pipe (1) are positioned in the same plane; a third inner hole (31) is formed in the stainless steel limiting pipe (3), an external thread (32) matched with the internal thread (12) is formed in the circumferential surface of the stainless steel limiting pipe (3), a third convex ring portion (33) is integrally formed in the circumferential surface of one end of the stainless steel limiting pipe (3), a plurality of embedding holes (34) are formed in the outer end face of the third convex ring portion (33), the embedding holes (34) penetrate through the inner end face of the third convex ring portion (33), and the embedding holes (34) are in one-to-one correspondence with the positions of the convex portions (23); the other end of the stainless steel limiting pipe (3) is arranged in the first inner hole (11), the external thread (32) is screwed on the internal thread (12), the embedding holes (34) are respectively sleeved on the corresponding bosses (23), and the third boss part (33) is positioned on the inner side of the second boss part (25).
2. The corrosion-resistant composite steel pipe structure of claim 1, wherein: the outer surface of the stainless steel inner pipe (1) is provided with a plurality of convex strip portions (13), the length direction of each convex strip portion (13) is enabled to be in the same direction with the length direction of the stainless steel inner pipe (1), the hole wall of the second inner hole (21) is provided with a plurality of strip-shaped grooves (211), the length direction of each strip-shaped groove (211) is enabled to be in the same direction with the length direction of the polytetrafluoroethylene outer pipe (2), the positions of the strip-shaped grooves (211) are enabled to correspond to the positions of the convex strip portions (13) one by one, the strip-shaped grooves (211) extend to the end faces of the two ends of the polytetrafluoroethylene outer pipe (2), and the strip-shaped grooves (211) are respectively clamped on the corresponding convex strip portions (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021309780.5U CN212935414U (en) | 2020-07-06 | 2020-07-06 | Corrosion-resistant composite steel pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021309780.5U CN212935414U (en) | 2020-07-06 | 2020-07-06 | Corrosion-resistant composite steel pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212935414U true CN212935414U (en) | 2021-04-09 |
Family
ID=75328375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021309780.5U Expired - Fee Related CN212935414U (en) | 2020-07-06 | 2020-07-06 | Corrosion-resistant composite steel pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212935414U (en) |
-
2020
- 2020-07-06 CN CN202021309780.5U patent/CN212935414U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 |