CN112393029A - Corrosion-resistant spiral steel pipe - Google Patents
Corrosion-resistant spiral steel pipe Download PDFInfo
- Publication number
- CN112393029A CN112393029A CN202011217333.1A CN202011217333A CN112393029A CN 112393029 A CN112393029 A CN 112393029A CN 202011217333 A CN202011217333 A CN 202011217333A CN 112393029 A CN112393029 A CN 112393029A
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- China
- Prior art keywords
- groove
- steel pipe
- lock cap
- stud
- end part
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a corrosion-resistant spiral steel pipe, which comprises a steel pipe body, wherein a protective layer is arranged on the outer wall of the body, and the corrosion-resistant spiral steel pipe also comprises a connector head and a self-locking mechanism, wherein the connector head is axially provided with a cavity channel, two sections of steel pipe bodies are respectively inserted into cavity openings at two ends, convex shoulders are arranged on the peripheral wall of the connector head at the cavity openings and the corresponding peripheral wall of the body, and sealing rings are arranged on the peripheral wall of the end part of the body and the; the self-locking mechanism comprises a stud, a lock cap and an unlocking column, when the unlocking column is inserted into a groove at the end part of the lock cap, the end part of a first elastic telescopic rod in a lock hole is ejected out by a second elastic telescopic rod, the lock cap is moved to enable a prism of the lock cap to be inserted into a prism groove of the stud, and the tail end of the unlocking column is rotated to synchronously drive the lock cap and the stud to rotate.
Description
Technical Field
The invention relates to the technical field of steel pipes, in particular to a corrosion-resistant spiral steel pipe.
Background
The protective layer is coated on the surfaces of the general spiral welded steel pipes to improve the corrosion resistance, the butt joint of the steel pipes is generally completed through the flange and the bolt, the liquid fluid is easy to leak when being transmitted, and the later leak stopping is very troublesome and needs to be improved.
In addition, after the steel pipes are butted, the phenomenon of leakage caused by manually and intentionally screwing fastening bolts exists, only one Japanese enterprise develops a novel bolt aiming at the phenomenon so as to avoid the phenomenon that non-professional persons screw, the bolt head is connected with the column body through other materials, the phenomenon of screwing off is easy to occur so as to avoid the bolt loosening, and the later maintenance and the like are troublesome and need to be improved.
Disclosure of Invention
In order to solve the technical defects, the invention provides the following technical scheme:
a corrosion-resistant spiral steel pipe comprises a steel pipe body, wherein a protective layer is arranged on the outer wall of the steel pipe body and comprises a manganese steel wear-resistant layer and a galvanized corrosion-resistant layer arranged on the manganese steel wear-resistant layer;
the connecting pipe head is provided with a cavity channel in the axial direction, two sections of steel pipe bodies are respectively inserted into the cavity ports at two ends, the peripheral wall of the pipe head at the cavity port and the corresponding peripheral wall of the body are provided with convex shoulders, the peripheral wall of the end part of the body and the surfaces of the convex shoulders are provided with sealing rings, and the corresponding cavity wall of the connecting pipe head and the convex shoulders are provided with grooves; the self-locking mechanism comprises a stud, a lock cap and an unlocking column, wherein the stud comprises a head part and a column body, the diameter of the head part is larger than that of the column body, a shoulder is provided with a stepped hole along a connecting tubular shaft, a rear section hole is a threaded hole to be meshed with the column body of the stud, the aperture is smaller than that of a front section, the shoulder surface of the body corresponding to the stepped hole is also provided with a threaded hole, the end part of the lock cap is provided with a prism, the head of the corresponding stud is provided with a prismatic groove, the end surface of the lock cap corresponding to the unlocking column is provided with a groove for the insertion of the unlocking column, the groove wall of the lock cap is provided with a lock hole, the wall of the corresponding stepped hole is provided with a first elastic telescopic rod, the side wall of the unlocking column is provided with a groove and a second elastic telescopic rod, when the unlocking column is inserted into the groove at the end part of the lock cap, the end part of the first elastic telescopic rod in the lock hole is ejected out by the second elastic telescopic rod, the lock cap is moved to enable the prism of the lock cap to be inserted into the edge groove of the stud, and the tail end of the unlocking column is rotated to synchronously drive the lock cap and the stud to rotate.
The steel pipe is mainly improved in that one steel pipe is double-layer protection and improves corrosion resistance, the other steel pipe is in butt joint in a splicing mode and is multi-sealed, and the third steel pipe is additionally provided with a self-locking mechanism and needs an unlocking column to be matched with an unlocking lock cap so as to drive a stud to be screwed, so that safety is improved.
Furthermore, two sealing rings are arranged on the peripheral wall of the end part of the body at intervals, so that the sealing performance is further improved.
Furthermore, the peripheral wall of the end part of the body is provided with a groove for arranging the sealing ring, so that the sealing ring is convenient to pre-position.
Furthermore, the front face of the end part of the body is provided with a groove and a sealing ring is arranged in the groove, a ring body is formed on the wall of the corresponding connecting pipe cavity, the same groove is formed on the corresponding face of the ring body to be matched with the sealing ring, multiple sealing is realized, and the sealing performance is improved.
Furthermore, first elasticity telescopic link, second elasticity telescopic link all include fixed pole, spring and slide bar, and fixed pole and slide bar registrate mutually, set up the spring between fixed pole and the slide bar, simple and practical.
Furthermore, the end part of the fixed rod is provided with a baffle ring to limit the slide rod, and when the second elastic telescopic rod is pushed up, the slide rod is prevented from being locked again in the hole along with the first elastic telescopic rod.
Furthermore, the unlocking column is provided with a groove, and the ejector rod is embedded into the fixing groove, so that the installation is convenient.
Compared with the prior art, the invention has the beneficial effects that:
1. the steel pipe is corrosion resistant, is butted in an inserting way, has good sealing performance, completes self locking by a self-locking mechanism, and has good safety.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional structural view of the present invention;
FIG. 2 is a structural view of the self-locking mechanism of the present invention;
FIG. 3 is a structural view of a second flexible telescoping pole;
wherein the reference numerals are:
1. connecting the pipe heads; 2. a body; 3. a shoulder is formed; 4. a ring body; 5. a seal ring; 6. a stud; 7. a lock cap; 8. unlocking the column; 9. a first elastic telescopic rod; 10. a second elastic telescopic rod; 61. a column body; 62. a head portion; 71. a lock hole; 91. fixing a rod; 92. a slide bar; 93. a spring; 94. and (4) a baffle ring.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example 1
Referring to fig. 1, 2 and 3, in the steel pipe formed by spiral welding, a protective layer is arranged on the outer wall of a steel pipe body 2, the protective layer is composed of an inner manganese steel wear-resistant layer and an outer galvanized corrosion-resistant layer, and has the advantages of wear resistance and corrosion resistance, the adaptability of the steel pipe to the environment is improved, meanwhile, in order to facilitate the butt joint of two pipes, a connector head 1 is added, a cavity is axially opened on the connector head to form a short pipe body, two end openings are butted with two steel pipe bodies in an inserting manner, a convex shoulder 3 is formed on the outer peripheral wall of the end part of the connector body in the embodiment, and a convex shoulder is formed on the outer peripheral wall of.
In this embodiment, in order to improve the leakproofness, all fluting in order to settle sealing ring 5 on body end front and periphery wall, the middle shaping ring body 4 of connector tube head chamber wall, ring body to accent department distance is the same with the tip length in shoulder the place ahead on the body, all fluting in order to cooperate with the sealing ring on corresponding connector tube head chamber wall, the ring body face simultaneously, during the grafting, the body end inserts to connecting the downthehole butt ring body of connector tube head chamber, this body tip shoulder and connecting tube head chamber mouth wall butt simultaneously.
Meanwhile, in order to improve the sealing performance, grooves are formed in the end convex shoulder of the body and the wall of the cavity opening of the corresponding connecting pipe head, the caliber (outer diameter) of the end of the body is the same as the inner diameter of the connecting pipe head, and the sealing ring is arranged in the end convex shoulder groove of the body.
Preferably, two seal rings are fitted to the end peripheral wall of the body at intervals to further improve the sealing performance.
In addition, the self-locking mechanism further comprises a stud 6, a lock cap 7 and an unlocking column 8, wherein the stud comprises a head 62 and a column body 61, the diameter of the head is larger than that of the column body, a shoulder is provided with a through stepped hole in a penetrating manner along a connecting pipe shaft, a rear section hole is a threaded hole to be meshed with the column body of the stud, the diameter of the rear section is smaller than that of the front section, the diameter of the front section is consistent with that of the head of the stud, and a shoulder surface of the body corresponding to a rear section hole of the stepped hole is provided with the same threaded hole; the tail end of the lock cap is formed into a prism, the head of the corresponding stud is provided with a prismatic groove, the head end face of the lock cap corresponding to the unlocking column is provided with a groove for the insertion of the unlocking column, the groove wall of the lock cap is provided with a radial unlocking hole 71, a through hole structure is formed, the wall of the corresponding stepped hole is provided with a built-in first elastic telescopic rod 9, the side wall of the unlocking column is provided with a built-in second elastic telescopic rod 10, and the length of the front section of the stepped hole is greater than that of the lock cap, so that the lock cap is completely.
When the locking device is used, the connector head is spliced with the steel pipe body, the lock cap is inserted to enable the prism to be embedded into the prismatic groove, the lock cap can be directly rotated to drive the stud to rotate and extend forwards to the screw hole of the shoulder of the body, the lock cap is built in, and the groove at the head end of the lock cap is cylindrical, so that the unlocking column still needs to be inserted subsequently, the telescopic end of the second elastic telescopic rod is bounced into the lock hole to enable the unlocking column and the lock cap to be integrated, then the unlocking column is continuously screwed until the tightness between the shoulder and the unlocking column meets the requirement, then the lock cap is drawn out, the unlocking column is taken down, the lock cap is inserted into the stepped hole again and is rotated until the telescopic end of the first elastic telescopic rod bounces into.
Optionally, the first elastic telescopic rod and the second elastic telescopic rod respectively comprise a fixed rod 91, a spring 93 and a sliding rod 92, the diameter of the fixed rod is smaller than that of the sliding rod, the sliding rod is provided with a groove for the fixed rod to be inserted into to form a sleeving structure, the spring is sleeved on the rod body of the fixed rod and the rod body of the sliding rod, and a fixed rod end part forming retaining ring corresponding to the tail end of the sliding rod is arranged to limit the sliding rod.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The utility model provides a corrosion-resistant spiral steel pipe, includes the steel pipe body, and the body outer wall sets up the inoxidizing coating, its characterized in that: the protective layer comprises a manganese steel wear-resistant layer and a galvanized corrosion-resistant layer arranged on the manganese steel wear-resistant layer;
the connecting pipe head is provided with a cavity channel in the axial direction, two sections of steel pipe bodies are respectively inserted into the cavity ports at two ends, the peripheral wall of the pipe head at the cavity port and the corresponding peripheral wall of the body are provided with convex shoulders, the peripheral wall of the end part of the body and the surfaces of the convex shoulders are provided with sealing rings, and the corresponding cavity wall of the connecting pipe head and the convex shoulders are provided with grooves; the self-locking mechanism comprises a stud, a lock cap and an unlocking column, wherein the stud comprises a head part and a column body, the diameter of the head part is larger than that of the column body, a shoulder is provided with a stepped hole along a connecting tubular shaft, a rear section hole is a threaded hole to be meshed with the column body of the stud, the aperture is smaller than that of a front section, the shoulder surface of the body corresponding to the stepped hole is also provided with a threaded hole, the end part of the lock cap is provided with a prism, the head of the corresponding stud is provided with a prismatic groove, the end surface of the lock cap corresponding to the unlocking column is provided with a groove for the insertion of the unlocking column, the groove wall of the lock cap is provided with a lock hole, the wall of the corresponding stepped hole is provided with a first elastic telescopic rod, the side wall of the unlocking column is provided with a groove and a second elastic telescopic rod, when the unlocking column is inserted into the groove at the end part of the lock cap, the end part of the first elastic telescopic rod in the lock hole is ejected out by the second elastic telescopic rod, the lock cap is moved to enable the prism of the lock cap to be inserted into the edge groove of the stud, and the tail end of the unlocking column is rotated to synchronously drive the lock cap and the stud to rotate.
2. The steel pipe of claim 1, wherein: two sealing rings are arranged on the peripheral wall of the end part of the body at intervals.
3. The steel pipe of claim 2, wherein: the end peripheral wall of the body is provided with a groove for arranging a sealing ring.
4. The steel pipe of claim 1, wherein: the front surface of the end part of the body is provided with a groove and a sealing ring is arranged in the groove, the wall of the corresponding connecting pipe head cavity is formed into a ring body, and the corresponding surface of the ring body is also provided with a groove matched with the sealing ring.
5. The steel pipe of claim 1, wherein: the first elastic telescopic rod and the second elastic telescopic rod respectively comprise a fixed rod, a spring and a sliding rod, the fixed rod is sleeved with the sliding rod, and the spring is arranged between the fixed rod and the sliding rod.
6. The steel pipe of claim 5, wherein: the end part of the fixed rod is provided with a baffle ring to limit the sliding rod.
7. The steel pipe of claim 5, wherein: the unlocking column is provided with a groove, and the ejector rod is embedded into the fixing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217333.1A CN112393029B (en) | 2020-11-04 | 2020-11-04 | Corrosion-resistant spiral steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217333.1A CN112393029B (en) | 2020-11-04 | 2020-11-04 | Corrosion-resistant spiral steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112393029A true CN112393029A (en) | 2021-02-23 |
| CN112393029B CN112393029B (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011217333.1A Active CN112393029B (en) | 2020-11-04 | 2020-11-04 | Corrosion-resistant spiral steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112393029B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428060B1 (en) * | 2000-01-03 | 2002-08-06 | Norco, Inc. | Latch mechanism |
| CN103266866A (en) * | 2013-03-01 | 2013-08-28 | 中国石油天然气股份有限公司 | Key needle tube type anti-theft anti-freezing sampling valve |
| TW201439418A (en) * | 2013-04-12 | 2014-10-16 | Yao-De Yang | Anti-pry lock cylinder featuring both forward and reverse locking |
| CN204081732U (en) * | 2014-07-08 | 2015-01-07 | 长园共创电力安全技术股份有限公司 | Flexible bail type lock |
| US20160146239A1 (en) * | 2014-11-21 | 2016-05-26 | Nic Products Inc. | Security Lock Bolt Assembly |
| CN107606344A (en) * | 2017-11-08 | 2018-01-19 | 成都酷爱睿工业产品设计有限公司 | A kind of bindiny mechanism of municipal pipeline |
| WO2018110934A1 (en) * | 2016-12-18 | 2018-06-21 | 안세영 | Bolt having lock device |
| CN209705048U (en) * | 2019-02-15 | 2019-11-29 | 常州市超艺标牌有限公司 | A kind of label anti-theft screw |
| CN211203163U (en) * | 2019-10-30 | 2020-08-07 | 江苏金亚电力设备有限公司 | Ceramic lining composite steel pipe with corrosion resistance |
-
2020
- 2020-11-04 CN CN202011217333.1A patent/CN112393029B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428060B1 (en) * | 2000-01-03 | 2002-08-06 | Norco, Inc. | Latch mechanism |
| CN103266866A (en) * | 2013-03-01 | 2013-08-28 | 中国石油天然气股份有限公司 | Key needle tube type anti-theft anti-freezing sampling valve |
| TW201439418A (en) * | 2013-04-12 | 2014-10-16 | Yao-De Yang | Anti-pry lock cylinder featuring both forward and reverse locking |
| CN204081732U (en) * | 2014-07-08 | 2015-01-07 | 长园共创电力安全技术股份有限公司 | Flexible bail type lock |
| US20160146239A1 (en) * | 2014-11-21 | 2016-05-26 | Nic Products Inc. | Security Lock Bolt Assembly |
| WO2018110934A1 (en) * | 2016-12-18 | 2018-06-21 | 안세영 | Bolt having lock device |
| CN107606344A (en) * | 2017-11-08 | 2018-01-19 | 成都酷爱睿工业产品设计有限公司 | A kind of bindiny mechanism of municipal pipeline |
| CN209705048U (en) * | 2019-02-15 | 2019-11-29 | 常州市超艺标牌有限公司 | A kind of label anti-theft screw |
| CN211203163U (en) * | 2019-10-30 | 2020-08-07 | 江苏金亚电力设备有限公司 | Ceramic lining composite steel pipe with corrosion resistance |
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| Publication number | Publication date |
|---|---|
| CN112393029B (en) | 2022-12-27 |
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