CN219367033U - Corrosion-resistant heat-insulating pipe - Google Patents
Corrosion-resistant heat-insulating pipe Download PDFInfo
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- CN219367033U CN219367033U CN202320199790.5U CN202320199790U CN219367033U CN 219367033 U CN219367033 U CN 219367033U CN 202320199790 U CN202320199790 U CN 202320199790U CN 219367033 U CN219367033 U CN 219367033U
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- connecting pipe
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- heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Thermal Insulation (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The application relates to an anti-corrosion heat-insulating pipe, which comprises an inner pipe, a heat-insulating layer and an outer pipe, wherein the inner pipe, the heat-insulating layer and the outer pipe are sequentially sleeved; the connecting pipe comprises two connecting parts, one ends of the two connecting parts are hinged with each other, the two connecting parts are mutually spliced and fixed at the positions away from the hinged positions, the connecting pipe is coated on the outer wall of the outer pipe, inclined surfaces are formed at two ends of the connecting pipe, the inclined surfaces at two ends of the connecting pipe are mutually far away from and inclined from one end close to the outer pipe to one end far away from the outer pipe, and an injection groove is formed in the pipe wall of the connecting pipe; the protection ring is connected to the inner wall of the connecting pipe, covers the overlapping part of the outer pipe and the connecting pipe, and is made of active metal materials such as zinc, magnesium or aluminum and alloys thereof; and the heat shrinkage belt is coated on the outer walls of the connecting pipe and the outer pipe, and covers the inclined planes at the two ends of the connecting pipe. The application has the effect of improving the phenomenon that moisture enters the lower part of the heat shrinkage belt and causes corrosion to the pipeline.
Description
Technical Field
The application relates to the field of heat preservation pipes, in particular to an anti-corrosion heat preservation pipe.
Background
The heat preservation pipe is generally formed by sleeving an inner pipe, a heat preservation layer and an outer pipe in sequence, wherein the inner pipe is made of PPR material, the heat preservation layer is composed of a polyurethane foaming layer, and the outer pipe is made of metal material. In the laying process of the heat preservation pipes, two ends of the two heat preservation pipes are required to be connected in a butt joint mode, in the butt joint process, inner pipes at two butt joint ends of the two heat preservation pipes extend out of the heat preservation layer and the outer pipe, after the inner pipes are subjected to hot-melt welding, heat preservation pipe shells are connected, after the shell connection is completed, holes are drilled in the shells, and filling of the heat preservation layer are carried out. In the related art, the connection mode of the outer tube of the heat preservation tube is mainly two, namely, one is connected by a heat shrinkage belt type, and the other is connected by an electric heating melting type.
Aiming at the related technology, the heat shrinkage belt and the pipe body anti-corrosion layer have insufficient bonding capability, and are easy to wrinkle and crack under the action of sunlight or soil stress. Meanwhile, no bubbles are difficult to be formed at the welding seam of the heat shrinkage belt, and once moisture enters the lower part of the heat shrinkage belt, cathode protection cannot function and corrosion cannot be prevented due to the current shielding function of the heat shrinkage belt.
Disclosure of Invention
In order to improve the phenomenon that moisture enters the lower part of the heat shrinkage belt and corrodes a pipeline, the application provides an anti-corrosion heat insulation pipe.
The application provides an anticorrosive insulating tube adopts following technical scheme:
an anti-corrosion insulating tube comprising:
the heat-insulating layer is sleeved with the outer tube in sequence;
the connecting pipe comprises two connecting parts, one ends of the two connecting parts are hinged with each other, the two connecting parts are mutually spliced and fixed at the positions away from the hinge joint, the connecting pipe is coated on the outer wall of the outer pipe, inclined surfaces are formed at two ends of the connecting pipe, the inclined surfaces at two ends of the connecting pipe are mutually far away from and inclined from one end close to the outer pipe to one end far away from the outer pipe, and an injection groove is formed in the pipe wall of the connecting pipe;
the protection ring is connected to the inner wall of the connecting pipe, the protection ring covers the overlapping part of the outer pipe and the connecting pipe, and the protection ring is made of active metal materials such as zinc, magnesium or aluminum and alloys thereof;
and the heat shrinkage belt is coated on the outer walls of the connecting pipe and the outer pipe, and covers the inclined planes at the two ends of the connecting pipe.
Through adopting above-mentioned technical scheme, when two insulation pipe butt joints, the inner tube hot melt welds, hoops two connecting portions that correspond the connecting pipe in two outer tube lateral walls and is close to tip position department, and the guard ring both sides butt respectively in guard ring and outer tube. The heat shrinkage belt is sleeved on the outer walls of the connecting pipe and the outer pipe, and the heat shrinkage belt is heated and shrunk, so that the heat shrinkage belt tightly covers the protecting ring, the outer pipe and inclined planes at two ends of the protecting ring. Through the design of the inclined planes at two ends of the connecting pipe, the shrinkage thermal shrinkage belt is tensioned to a certain extent, the shrinkage speed of the thermal shrinkage belt is delayed, the sealing performance of the thermal shrinkage belt on the joint of the connecting pipe and the outer pipe is prolonged, meanwhile, the cathode protection method is utilized, so that water penetrating into the space between the thermal shrinkage belt and the outer pipe firstly reacts with the protection ring, the corrosion speed of the outer pipe and the connecting pipe is delayed, the water content entering the heat preservation layer is reduced, and the heat preservation effect of the heat preservation layer is prolonged.
Optionally, the method comprises the following steps:
the heavy groove, two connecting portion grafting position department threaded connection has the bolt, heavy groove offer in two connecting portion grafting department, the bolt install in heavy groove, the connecting pipe outer wall is smooth to be set up.
Through adopting above-mentioned technical scheme, the heat shrinkage area is better to the cladding performance of the smooth connecting pipe that sets up of outer wall, and the bolt that is located the heavy groove cell body is difficult for jack-up heat shrinkage area for the heat shrinkage area is difficult for lacerating, helps maintaining the sealed effect of heat shrinkage area.
Optionally, the method comprises the following steps:
the plug is inserted into the injection groove body corresponding to the connecting pipe and used for sealing the injection groove.
Through adopting above-mentioned technical scheme, the end cap can carry out the shutoff to the injection groove cell body after the filling heat preservation, reduces the corrosion damage of external environment to the heat preservation, prolongs the heat preservation performance of heat preservation.
Optionally, the method comprises the following steps:
the corrosion-resistant layer covers inclined planes at two ends of the connecting pipe, the corrosion-resistant layer covers the side wall of the plug, and the corrosion-resistant layer is made of elastic corrosion-resistant materials such as HFVC, RTFE and the like.
By adopting the technical scheme, the elastic body corrosion-resistant material can improve the sealing performance between the plug and the injection groove body, and when the thermal shrinkage belt is retracted or is incompletely welded to cause bulges at the inclined surface of the connecting pipe, the corrosion-resistant layer can expand to a certain extent, so that the sealing performance of the thermal shrinkage layer is improved.
Optionally, a limiting ring is fixedly connected to one end, close to the outer tube, of the groove body of the injection groove, and the plug is abutted to the limiting ring.
Through adopting above-mentioned technical scheme, the design of spacing ring for the end cap is difficult for being pushed into the connecting pipe by staff by force in the installation.
Optionally, the inclined planes at two ends of the connecting pipe are in smooth transition with the outer wall of the connecting pipe.
Through adopting above-mentioned technical scheme, here smooth transition's design has reduced the connecting pipe inclined plane and has kept away from body one end to the pressure of thermal contraction layer unit area, has reduced the damage probability of thermal contraction layer.
Optionally, the corrosion-resistant layer and the protection ring are detachably connected to the connection pipe, and the connection mode includes but is not limited to common clamping connection, plugging connection, and the like.
By adopting the technical scheme, the corrosion-resistant layer and the protection ring can be replaced regularly, which is helpful for prolonging the sealing effect of the connecting pipe.
Optionally, the connecting pipe is made of stainless steel.
By adopting the technical scheme, the connecting pipe is not easy to corrode, and the sealing performance with the outer wall of the pipeline can still be well maintained in the corrosion process of the protection ring.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the inclined planes at the two ends of the connecting pipe delay the retraction speed of the heat shrinkage belt, prolong the sealing performance of the heat shrinkage belt on the joint of the connecting pipe and the outer pipe, and improve the corrosion resistance of the joint of the end part of the outer pipe;
2. the design of the protection ring can utilize the cathode to protect the wire winding and moisture to react, so that the anti-corrosion performance of the joint of the end part of the outer tube is improved;
3. the design of the corrosion-resistant layer improves the tightness between the plug and the injection groove body and improves the tightness between the heat shrinkage sleeve and the two ends of the connecting pipe.
Drawings
FIG. 1 is a schematic structural view of an anti-corrosion insulating pipe according to an embodiment of the present application;
FIG. 2 is a schematic view of the structure of two butted thermal insulation pipes of a corrosion resistant thermal insulation pipe according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of two butted thermal insulation pipes of a corrosion resistant thermal insulation pipe according to an embodiment of the present application;
fig. 4 is a schematic structural view of a connecting pipe of an anti-corrosion insulation pipe according to an embodiment of the present application.
Reference numerals illustrate: 1. an inner tube; 2. a heat preservation layer; 3. an outer tube; 4. a connecting pipe; 41. a connection part; 42. an inclined plane; 43. sinking grooves; 44. a bolt; 45. an injection groove; 46. a limiting ring; 5. a guard ring; 6. a plug; 61. a corrosion resistant layer; 7. and (5) heat shrinking the belt.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses an anti-corrosion heat preservation pipe. Referring to fig. 1-4, an anti-corrosion heat preservation pipe comprises an inner pipe 1, wherein a heat preservation layer 2 is sleeved on the outer wall of the inner pipe 1, and an outer pipe 3 is sleeved on the outer wall of the heat preservation layer 2. The connecting pipe 4 is arranged at the joint of the two heat preservation pipes corresponding to the outer pipe 3, the connecting pipe 4 is sleeved on the outer walls of the two outer pipes 3, and the connecting pipe 4 is made of stainless steel. The connecting pipe 4 comprises two connecting portions 41, each connecting portion 41 is a half pipe with a semi-arc radial section, one radial ends of the two connecting portions 41 are hinged to each other, one ends of the two connecting portions 41, which are far away from the hinged positions, are mutually spliced, the splicing portions of the two connecting portions 41 are vertically connected with two bolts 44, and the two bolts 44 are distributed along the radial array of the connecting portions 41. The positions of the two connecting parts 41 corresponding to the positions of the bolts 44 are provided with the sinking grooves 43, the bolts 44 are in threaded connection with the grooves of the sinking grooves 43, and the outer wall of the connecting pipe 4 is arranged smoothly.
Referring to fig. 3 and 4, inclined surfaces 42 are formed at both ends of the connecting pipe 4, the two inclined surfaces 42 incline away from each other from one end close to the outer pipe 3 to one end far away from the outer pipe 3, and smooth transition is formed between the two inclined surfaces 42 and the outer wall of the connecting pipe 4. The connecting pipe 4 is detachably connected with a protecting ring 5 near the two ends of the connecting pipe, the connecting mode comprises but not limited to common plugging and clamping, the protecting ring 5 comprises but not limited to active metal materials such as zinc, magnesium or aluminum and alloys thereof, the protecting ring 5 covers the overlapping position of the connecting pipe 4 and the outer pipe 3, and the outer pipe 3 is abutted to the protecting ring 5.
Referring to fig. 3 and 4, two injection grooves 45 are formed in the side wall of the connecting pipe 4, and a limiting ring 46 is fixedly connected to one end, close to the outer pipe 3, of the connecting pipe 4 corresponding to the groove body of the injection groove 45. A plug 6 is inserted in the groove body of each injection groove 45 corresponding to the connecting pipe 4, the plug 6 is abutted against the limiting ring 46, and the plug 6 is sunk and arranged with the groove body of the injection groove 45. The two inclined surfaces 42 corresponding to the side wall of each plug 6 and the connecting pipe 4 are detachably connected with a corrosion-resistant layer 61, and the disassembling mode of the corrosion-resistant layer comprises but not limited to common plugging, clamping and the like, and the material of the corrosion-resistant layer 61 comprises but not limited to elastomer corrosion-resistant materials such as HFVC, RTFE and the like.
Referring to fig. 3, the outer walls of the outer tube 3 and the connecting tube 4 are coated with heat shrinkage belts 7, the heat shrinkage belts 7 are completely coated with two inclined surfaces 42 corresponding to the connecting tube 4, and the heat shrinkage belts 7 are attached to the outer tube 3 and the connecting tube 4.
The implementation principle of the anti-corrosion heat preservation pipe provided by the embodiment of the application is as follows: when two heat preservation pipes are connected, after the ends of the two inner pipes 1 are subjected to hot melt welding, the ends of the two outer pipes 3 are connected by the connecting pipe 4, the two connecting parts 41 of the outer pipes 3 are clamped on the outer side walls of the two outer pipes 3 close to the ends, the ends of the two connecting parts 41 are mutually inserted and fixed by bolts 44, the bolts 44 are positioned in the sinking grooves 43, and meanwhile, the protection ring 5 is abutted between the outer pipes 3 and the connecting pipe 4. The heat preservation layer 2 is injected through one injection groove 45, the other injection groove 45 is used for observing the injection depth and ventilation of the heat preservation layer 2, after the injection of the heat preservation layer 2 is finished, the two injection grooves 45 are plugged by the plug 6, and the corrosion-resistant layer 61 corresponding to the plug 6 is abutted to the groove body of the injection groove 45. The heat shrinkage belt 7 is sleeved on the outer wall of the connecting pipe 4, so that the heat shrinkage belt 7 is heated and shrunk, the pipe wall of the outer pipe 3 which is completely coated on the connecting pipe 4 and is close to the two ends of the connecting pipe 4, and meanwhile, the corrosion-resistant layer 61 connected to the inclined planes 42 at the two ends of the connecting pipe 4 is abutted against the inner wall of the heat shrinkage belt 7, and the heat shrinkage belt 7 is completely attached to the outer pipe 3 and the connecting pipe 4.
The corrosion prevention principle is as follows: when the heat shrinkage belt 7 deforms due to soil stress and the adhesion force between the outer tube 3 and the connecting tube 4 is reduced, the inclined surface 42 corresponding to the outer tube 3 can delay the retraction of the heat shrinkage belt 7 to a certain extent, the corrosion-resistant layer 61 mounted on the inclined surface 42 has elasticity, can expand to a certain extent, maintains good tightness between the heat shrinkage belt 7 and the connecting tube 4, and meanwhile, the corrosion-resistant layer 61 at the plug 6 is also used for enhancing tightness between the plug 6 and the groove body of the injection groove 45.
When moisture and corrosive chemical substances permeate into the gap between the heat shrinkage belt 7 and the pipeline, the protection ring 5 made of active metal can firstly corrode to electrochemically protect the connection ring and the outer pipe 3, and the stainless steel connection pipe 4 has good corrosion resistance, so that the sealing performance of the joint of the two outer pipes 3 can be maintained while the corrosion of the connection ring disappears. The corrosion-resistant layer 61 and the protection ring 5 are detachably connected with the plug 6 or the connecting pipe 4, so that workers can maintain and replace the connection part of the outer pipe 3 of the heat-insulating pipe for a long time, the good sealing property is maintained for a longer time, the corrosion of external substances to the heat-insulating layer 2 is reduced, and the heat-insulating time of the heat-insulating pipe is effectively prolonged.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. An anti-corrosion insulating pipe, comprising:
the heat-insulating layer (2) is sleeved with the outer tube (3) in sequence, and the inner tube (1) and the heat-insulating layer (2) are sleeved with the outer tube (3);
the connecting pipe (4), connecting pipe (4) include two connecting portions (41), two connecting portions (41) one end articulates each other, two connecting portions (41) keep away from articulated department and peg graft fixedly each other, connecting pipe (4) cladding is in outer wall of outer tube (3), inclined plane (42) have all been seted up at connecting pipe (4) both ends, inclined plane (42) at connecting pipe (4) both ends are kept away from each other the slope from being close to outer tube (3) one end to keeping away from outer tube (3) one end, injection groove (45) have been seted up to connecting pipe (4) pipe wall;
the protection ring (5) is connected to the inner wall of the connecting pipe (4), the protection ring (5) covers the overlapping part of the outer pipe (3) and the connecting pipe (4), and the protection ring (5) is made of any one of zinc, magnesium or aluminum;
and the heat shrinkage belt (7), the heat shrinkage belt (7) is coated on the outer walls of the connecting pipe (4) and the outer pipe (3), and the heat shrinkage belt (7) is arranged to cover inclined planes (42) at two ends of the connecting pipe (4).
2. The corrosion-resistant insulating pipe according to claim 1, comprising:
sinking groove (43), two connecting portion (41) grafting position department threaded connection has bolt (44), sinking groove (43) set up in two connecting portion (41) grafting department, bolt (44) install in sinking groove (43), connecting pipe (4) outer wall is smooth to be set up.
3. The corrosion-resistant insulating pipe according to claim 1, comprising:
the plug (6) is inserted into the injection groove (45) corresponding to the connecting pipe (4), and the plug (6) is used for sealing the injection groove (45).
4. A corrosion resistant insulation pipe according to claim 3, comprising:
the corrosion-resistant layer (61), the inclined planes (42) at two ends of the connecting pipe (4) are covered by the corrosion-resistant layer (61), the side wall of the plug (6) is covered by the corrosion-resistant layer (61), and the material of the corrosion-resistant layer (61) is HFVC or RTFE.
5. A corrosion resistant insulating pipe according to claim 3, wherein: a limiting ring (46) is fixedly connected to one end, close to the outer tube (3), of the groove body of the injection groove (45), and the plug (6) is abutted to the limiting ring (46).
6. An anti-corrosion insulating pipe according to claim 1, wherein: the inclined planes (42) at the two ends of the connecting pipe (4) are in smooth transition with the outer wall of the connecting pipe (4).
7. An anti-corrosion insulating pipe according to claim 4, wherein: the corrosion-resistant layer (61) and the protection ring (5) are detachably connected to the connecting pipe (4), and the connection mode comprises clamping or inserting.
8. An anti-corrosion insulating pipe according to claim 1, wherein: the connecting pipe (4) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320199790.5U CN219367033U (en) | 2023-02-09 | 2023-02-09 | Corrosion-resistant heat-insulating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320199790.5U CN219367033U (en) | 2023-02-09 | 2023-02-09 | Corrosion-resistant heat-insulating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219367033U true CN219367033U (en) | 2023-07-18 |
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ID=87116882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320199790.5U Active CN219367033U (en) | 2023-02-09 | 2023-02-09 | Corrosion-resistant heat-insulating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219367033U (en) |
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2023
- 2023-02-09 CN CN202320199790.5U patent/CN219367033U/en active Active
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