CN220228347U - Insulation structure for pipeline joint - Google Patents
Insulation structure for pipeline joint Download PDFInfo
- Publication number
- CN220228347U CN220228347U CN202321101570.0U CN202321101570U CN220228347U CN 220228347 U CN220228347 U CN 220228347U CN 202321101570 U CN202321101570 U CN 202321101570U CN 220228347 U CN220228347 U CN 220228347U
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- layer
- protective layer
- heating wire
- melt adhesive
- insulation structure
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- 238000009413 insulation Methods 0.000 title claims abstract description 43
- 239000010410 layer Substances 0.000 claims abstract description 90
- 239000011241 protective layer Substances 0.000 claims abstract description 44
- 239000004831 Hot glue Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000012774 insulation material Substances 0.000 claims abstract description 10
- 238000005485 electric heating Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 43
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Thermal Insulation (AREA)
Abstract
The utility model provides a heat insulation structure for a pipeline joint, which comprises a cylinder body, wherein the inner diameter of the middle part of the cylinder body is larger than the inner diameters of two ends, and the outer diameter of the middle part of the cylinder body is larger than the outer diameters of the two ends; the cylinder body is provided with a through cutting opening inside and outside; the cylinder body also comprises a connecting layer and a protective layer which are sequentially arranged from inside to outside; the connecting layer comprises a hot melt adhesive layer and an electric heating wire arranged on the hot melt adhesive layer; the two shaft ends of the protective layer are respectively connected with the two shaft ends of the connecting layer in a sealing way, and a filling space of the heat insulation material is formed between the connecting layer and the protective layer. In the utility model, the connecting layer can form a seal at the pipeline joint; the fixed connection between the connecting layer and the protective layer can prevent external moisture from entering the heat-insulating sponge layer; the filling space of the connecting layer and the heat insulation material can be protected by the protective layer. The thickness of the heat-insulating sponge layer of the existing heat-insulating structure can be improved by enabling the inner diameter and the outer diameter of the middle part to be larger than those of the inner diameter and the outer diameter of the two ends.
Description
Technical Field
The utility model belongs to the field of pipeline connection, and particularly relates to a heat preservation structure for a pipeline interface.
Background
The prefabricated direct-buried heat-insulating pipeline with the socket type flexible interface is widely applied to the fields of hot spring water transportation, cold water heat preservation, factory waste heat transmission, urban central heating and the like, but the outer diameter of a base material in the interface area (socket interface and flange interface) of the socket type heat-insulating pipeline is obviously larger than the outer diameter of a straight pipe position, even larger than the outer diameter of the heat-insulating area of the straight pipe, and the on-site workers need to consider the interface and the flange with the convex base material when carrying out heat-insulating operation on the interface, so that the operation difficulty is larger.
The existing insulation structure for the insulation pipeline has the following defects: first: the sealing performance is poor during heat preservation, and moisture in soil enters the interface area and the pipeline heat preservation sponge layer, so that heat preservation is invalid, and even the whole pipeline is corroded. Second,: the thickness of the heat-insulating sponge layer in the heat-insulating area of the interface is insufficient, the temperature of the outer surface is higher than 50 ℃, so that the interface protection layer is aged rapidly, and damage and failure can be caused in a short period of time.
Disclosure of Invention
The utility model aims to provide a heat-insulating structure for a pipeline joint, so as to solve the technical problems that the sealing performance is poor and the thickness of a heat-insulating sponge layer at the joint is insufficient when the existing heat-insulating structure is used for heat insulation.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the heat insulation structure for the pipeline interface comprises a cylinder body, wherein the inner diameter of the middle part of the cylinder body is larger than the inner diameters of two ends, and the outer diameter of the middle part of the cylinder body is larger than the outer diameters of two ends; the cylinder body is provided with a through-cut opening inside and outside;
the cylinder body further comprises a connecting layer and a protective layer which are sequentially arranged from inside to outside; the connecting layer comprises a hot melt adhesive layer and an electric heating wire arranged on the hot melt adhesive layer; and two shaft ends of the protective layer are respectively and hermetically connected with two shaft ends of the connecting layer, and a filling space of heat insulation material is formed between the connecting layer and the protective layer.
In one possible implementation manner, a first protrusion and a first recess are formed on the surface of the hot melt adhesive layer, the part, embedded in the first protrusion, of the heating wire is a first connection section, the part, located in the first recess, of the heating wire is a second connection section, and the second connection section is serrated.
In one possible implementation manner, the heating wire is embedded in the hot melt adhesive layer, and a plurality of cavities arranged in a grid shape are arranged in the hot melt adhesive layer, the heating wire is embedded in the hot melt adhesive layer and is a first connecting section, the heating wire is located in the cavity and is a second connecting section, and the second connecting section is in a saw-tooth shape.
In one possible implementation, the cylinder includes a heat-insulating sponge layer pre-placed in the filling space, and the heat-insulating sponge layer is formed with an overlapping inclined plane corresponding to the cut-off opening.
In one possible implementation manner, the protective layer is a polyethylene protective layer, and the heating wire is embedded in the protective layer corresponding to the fracture.
In one possible implementation manner, the middle part of the cylinder body is a first receiving section, the end part of the cylinder body is a second receiving section, tapered parts are formed at two ends of the first receiving section, and the second receiving section is integrally connected with the tapered parts.
In one possible implementation manner, the protective layer comprises two semi-cylindrical sheet metal parts, flanges are arranged on the two sheet metal parts, connecting holes are formed in the flanges, and the fracture is formed between the two flanges which are oppositely arranged.
In one possible implementation manner, the insulation structure for a pipeline interface further comprises a sealing gasket arranged on the turnup and a connecting bolt for connecting the two sheet metal parts.
In one possible implementation, the protective layer is provided with injection molding holes.
In one possible implementation manner, along the axis of the cylinder, two ends of the protection layer in the axial direction are formed with a closing edge extending towards the axis of the cylinder, and the closing edge is in sealing connection with the connecting layer.
Compared with the prior art, the utility model has the following advantages: by arranging the connecting layer, the sealing at the pipeline interface can be formed; meanwhile, the fixed connection between the connecting layer and the protective layer can prevent external moisture from entering the filling space of the heat insulation material, so that the heat insulation effect of the utility model is guaranteed; in addition, the utility model can protect the filling space of the connecting layer and the heat insulation material by arranging the protective layer. Moreover, through making the middle part internal diameter size of barrel be greater than both ends internal diameter size, the shape of tie-layer 1 is more laminated with the shape of pipeline grafting department, and then can strengthen the connection effect of tie-layer and pipeline interface department to do benefit to and improve current insulation construction and lead to the not good technical problem of leakproofness because of the joint strength of inner wall and pipeline grafting department is not enough. Meanwhile, the outer diameter of the middle part of the cylinder body is larger than the outer diameter of the two ends, so that the outer diameter of the heat insulation structure can be matched with the change of the inner diameter of the heat insulation structure, and the problem that the filling space of heat insulation materials is insufficient due to the fact that the outer diameter of the existing heat insulation structure is too small is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic perspective view of a heat insulation structure for a pipe interface according to an embodiment of the present utility model in a top view;
FIG. 2 is a cross-sectional view of a thermal insulation structure for a pipe joint according to an embodiment of the present utility model in a top view;
FIG. 3 is a cross-sectional view of a thermal insulation structure for a pipe joint according to an embodiment of the present utility model;
FIG. 4 is a schematic view showing the arrangement of a hot melt adhesive and heating wires according to an embodiment of the present utility model;
FIG. 5 is a schematic view showing another arrangement of a hot melt adhesive and heating wires used in another embodiment of the present utility model;
fig. 6 is a front view of a heat insulation structure for a pipeline interface according to an embodiment of the present utility model.
In the figure:
1. a connection layer; 11. a hot melt adhesive layer; 111. a first protrusion; 112. a first recess; 113. a cavity; 12. heating wires; 121. a first connection section; 122. a second connection section;
2. a heat preservation sponge layer;
3. a protective layer; 31. flanging; 32. a connection hole; 33. closing up edges;
4. a fracture;
5. a cylinder; 51. a first receiving section; 52. a second receiving section; 53. a taper.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", and the like are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 3, the heat insulation structure for a pipeline interface provided by the present utility model will now be described. The insulation structure for the pipeline joint comprises a cylinder body 5, wherein the inner diameter of the middle part of the cylinder body 5 is larger than the inner diameters of two ends; the outer diameter of the middle part of the cylinder body 5 is larger than that of the two ends, and the cylinder body 5 is provided with a through fracture opening 4; the cylinder 5 comprises a connecting layer 1 and a protective layer 3 which are sequentially arranged from inside to outside; the connecting layer 1 comprises a hot melt adhesive layer 11 and an electric heating wire 12 arranged on the hot melt adhesive layer 11, two shaft ends of the protective layer 3 are respectively and hermetically connected with two shaft ends of the connecting layer 1, and a filling space of heat insulation materials is formed between the connecting layer 1 and the protective layer 3.
Compared with the prior art, the utility model has the following advantages: by providing the connection layer 1, a seal at the pipe joint can be formed; meanwhile, the fixed connection between the connecting layer 1 and the protective layer 3 can prevent external moisture from entering the filling space of the heat insulation material, so that the heat insulation effect of the utility model is guaranteed; in addition, the present utility model can protect the connection layer 1 and the filling space of the heat insulating material by providing the protection layer 3. Moreover, through making barrel 5's middle part internal diameter size be greater than both ends internal diameter size, the shape of tie-layer 1 is more laminated with the shape of pipeline grafting department, and then can strengthen the connection effect of tie-layer 1 and pipeline interface department to do benefit to and improve current insulation construction and lead to the technical problem that the leakproofness is not good because of the joint strength of inner wall and pipeline grafting department is not enough. Meanwhile, the outer diameter of the middle part of the cylinder body 5 is larger than the outer diameter of the two ends, so that the outer diameter of the heat insulation structure can be matched with the change of the inner diameter of the heat insulation structure, and the problem that the filling space of heat insulation materials is insufficient due to the fact that the outer diameter of the existing heat insulation structure is too small is solved.
In some embodiments, referring to fig. 4, a first protrusion 111 and a first recess 112 are formed on the surface of the hot melt adhesive layer 11, a portion of the heating wire 12 embedded in the first protrusion 111 is a first connection section 121, a second connection section 122 of the heating wire 12 located in the first recess 112 is a zigzag shape, and the second connection section 122 is a zigzag shape.
It should be noted that, the hot melt adhesive layer 11 has a certain elasticity, and when the hot melt adhesive layer is coated at the pipeline interface after being stretched, the elastic retraction of the hot melt adhesive layer 11 can be utilized to enhance the coating effect of the hot melt adhesive layer 11 and the interface to be coated, so that the connection between the hot melt adhesive layer 11 and the pipeline interface is tighter; meanwhile, in this embodiment, the second connection section 122 of the heating wire 12 is set to be zigzag, and the heating wire 12 can generate corresponding elastic deformation along with the deformation of the heating wire 11 in the stretching process of the heating wire 11, so that each part of the heating wire 12 can be melted by the heating wire 12, thereby being beneficial to enhancing the bonding strength of the heating wire 11.
In addition, part of the structure of the heating wire 12 is embedded into the hot melt adhesive layer 11, so that the problem that the heating wire 12 and the hot melt adhesive layer 11 cannot be aligned in the process of assembling the heating wire 12 in the existing heat insulation structure can be solved.
Alternatively, the hot melt adhesive layer 11 is selected from thermoplastic elastomer hot melt adhesives, and the heating wire 12 is selected from iron-nickel materials.
Optionally, in order to make the arrangement of the heating wire 12 on the hot-melt adhesive layer 11 more reasonable, referring to fig. 4, a plurality of rows of concave-convex portions are provided on the hot-melt adhesive layer 11, the single row of concave-convex portions includes first protrusions 111 and first recesses 112 that are alternately arranged, and the heating wire 12 sequentially passes through the first protrusions 111 in two adjacent rows of concave-convex portions in a serpentine shape.
In some embodiments, referring to fig. 5, the heating wire 12 is disposed inside the hot-melt adhesive layer 11, and a plurality of cavities 113 arranged in a grid shape are disposed inside the hot-melt adhesive layer 11, the heating wire 12 is embedded in the hot-melt adhesive layer 11 and is a first connection section 121, the heating wire 12 is located in the cavity 113 and is a second connection section 122, and the second connection section 122 is in a zigzag shape.
So set up, thoroughly bury into hot melt adhesive layer 11 with heating wire 12, can prevent that heating wire 12 from exposing to be favorable to improving the problem that connection layer 1 is easy to damage because of the hook in the use heating wire 12.
More specifically, referring to fig. 5, the heating wires 12 are disposed inside the hot-melt adhesive layer 11 in a "well" shape, and the portions of the heating wires 12 that are staggered (i.e., the first connecting sections 121) (the two heating wires 12 that are staggered along the thickness direction of the hot-melt adhesive layer 11 are not located at the same height) are embedded inside the hot-melt adhesive layer 11, and the portions of the heating wires 12 that are not staggered (i.e., the second connecting sections 122) are located in the cavity 113.
In some embodiments, in order to facilitate the installation of the insulation structure for a pipe joint in the present utility model at the pipe joint, the cylinder 5 includes an insulation sponge layer 2 preset in the filling space, and the insulation sponge layer 2 is formed with an overlapping slope corresponding to the cut-off 4.
In some embodiments, to prevent the heating wire 12 from breaking inside the cavity 113 due to rust, the cavity 113 is internally evacuated.
In some embodiments, in order to facilitate connection of the protective layer 3 at the fracture 4, the protective layer 3 is made of polyethylene, and the heating wire 12 is embedded in the protective layer 3 corresponding to the fracture 4. In this embodiment, by energizing the heating wire 12, the protective layer 3 at the cut-off opening 4 can be heated, and then the protective layer 3 at the cut-off opening 4 can be connected into a whole by extrusion.
In some embodiments, the middle of the cylinder 5 is a first receiving section 51, the end of the cylinder 5 is a second receiving section 52, two ends of the first receiving section 51 form a tapering portion 53, and the second receiving section 52 is integrally connected with the tapering portion 53. By this arrangement, the problem that stress concentration is likely to occur at the corner portions of the outer surface of the protective layer 3 can be solved, and the impact resistance of the protective layer 3 against external impact can be advantageously enhanced.
In some embodiments, referring to fig. 6, for convenience, the heat insulation structure for the pipe joint is sleeved at the pipe joint, the protection layer 3 is two semicircular sheet metal parts, flanges 31 are respectively provided on the two sheet metal parts, connecting holes 32 are formed on the flanges 31, and a fracture 4 is formed between the fracture 4 and the two flanges 31 which are oppositely arranged corresponding to the gap between the two flanges 31.
It should be noted that, in this embodiment, the shape of the flange 31 is formed by sheet metal parts in the production process of extrusion molding, when the heat insulation sponge layer 2 needs to be sealed, two sheet metal parts are fixed by an iron wire or a bolt through the connecting hole 32, and then the flange 31 is welded by a welding gun.
In some embodiments, to improve the problem that the existing protective layer 3 is prone to cause the fire of the pipe protective layer 3 during welding, the insulation structure of the pipe joint further comprises a sealing gasket arranged on the flange 31 and a connecting bolt for connecting the two sheet metal parts.
In this embodiment, through the fastening of connecting bolt to turn-ups 31, sealing washer can form sealing connection between two sheet metal components, when convenient assembling, also is favorable to improving the technical problem that current sheet metal components lead to heat preservation sponge layer 2 to fire easily in the welding process.
In some embodiments, in order to quickly complete the heat insulation operation of the pipe joint, injection molding holes are formed in the protective layer 3.
More specifically, the material that fills in the filling space in this embodiment is polyurethane foam, so sets up, and tie layer 1 adheres to pipeline interface department, and after the fracture 4 of protective layer 3 is connected, spraying equipment's nozzle can aim at the hole of moulding plastics and spray into polyurethane dish end to between protective layer 3 and the tie layer 1, and then adopts waterproof sticky tape to glue the hole of moulding plastics and can accomplish the heat preservation operation of pipeline interface fast.
In some embodiments, in order to prevent external moisture from entering the protective layer 3, a closing edge 33 extending toward the axis of the cylinder 5 is formed at two ends of the protective layer 3 in the axial direction along the axis of the cylinder 5, and the closing edge 33 is in sealing connection with the connection layer 1.
Optionally, the end of the closing edge 33 facing the inner wall of the cylinder 5 is flush with the inner wall of the cylinder 5, so that the connecting layer 1 can be completely wrapped by the protective layer 3 after assembly.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The heat preservation structure for the pipeline interface is characterized by comprising a cylinder, wherein the inner diameter of the middle part of the cylinder is larger than the inner diameters of two ends, and the outer diameter of the middle part of the cylinder is larger than the outer diameters of the two ends; the cylinder body is provided with a through-cut opening inside and outside;
the cylinder body further comprises a connecting layer and a protective layer which are sequentially arranged from inside to outside; the connecting layer comprises a hot melt adhesive layer and an electric heating wire arranged on the hot melt adhesive layer; and two shaft ends of the protective layer are respectively and hermetically connected with two shaft ends of the connecting layer, and a filling space of heat insulation material is formed between the connecting layer and the protective layer.
2. The insulation structure for a pipe joint according to claim 1, wherein a first protrusion and a first recess are formed on the surface of the hot melt adhesive layer, a portion of the heating wire embedded in the first protrusion is a first connection section, a second connection section of the heating wire located in the first recess is a saw-tooth shape, and the second connection section is a saw-tooth shape.
3. The insulation structure for a pipeline interface according to claim 1, wherein the heating wire is embedded in the hot melt adhesive layer, a plurality of cavities arranged in a grid shape are arranged in the hot melt adhesive layer, the heating wire is embedded in the hot melt adhesive layer and is a first connecting section, the heating wire is located in the cavity and is a second connecting section, and the second connecting section is in a saw-tooth shape.
4. A thermal insulation structure for a pipe joint according to claim 3, wherein the cylinder includes a thermal insulation sponge layer pre-placed in the filling space, the thermal insulation sponge layer being formed with an overlapping slope corresponding to the cut-off.
5. The insulation structure for a pipe joint according to claim 1, wherein the protective layer is a polyethylene protective layer, and an electric heating wire is embedded in the protective layer corresponding to the cutting opening.
6. A thermal insulation structure for a pipeline interface as claimed in claim 3, wherein the middle part of the cylinder is a first receiving section, the end part of the cylinder is a second receiving section, tapered parts are formed at two ends of the first receiving section, and the second receiving section is integrally connected with the tapered parts.
7. The insulation structure for a pipe joint according to claim 1, wherein the protective layer comprises two semi-cylindrical sheet metal parts, flanges are arranged on the two sheet metal parts, connecting holes are formed in the flanges, and the fracture is formed between the two flanges which are oppositely arranged.
8. The insulation structure for a pipe joint according to claim 7, further comprising a sealing washer provided on the turn-up side and a connecting bolt for connecting the two sheet metal members.
9. The insulation structure for a pipe joint according to claim 1, wherein the protective layer is provided with injection holes.
10. The insulation structure for a pipe joint according to claim 9, wherein, along the axis of the cylinder, the two ends of the protective layer in the axial direction are formed with a closing edge extending toward the axis of the cylinder, and the closing edge is in sealing connection with the connecting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321101570.0U CN220228347U (en) | 2023-05-09 | 2023-05-09 | Insulation structure for pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321101570.0U CN220228347U (en) | 2023-05-09 | 2023-05-09 | Insulation structure for pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220228347U true CN220228347U (en) | 2023-12-22 |
Family
ID=89188898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321101570.0U Active CN220228347U (en) | 2023-05-09 | 2023-05-09 | Insulation structure for pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220228347U (en) |
-
2023
- 2023-05-09 CN CN202321101570.0U patent/CN220228347U/en active Active
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