CN211039958U - Steel-sheathed-steel heat-insulation pipe applied to heating power pipe network - Google Patents
Steel-sheathed-steel heat-insulation pipe applied to heating power pipe network Download PDFInfo
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- CN211039958U CN211039958U CN201921427977.6U CN201921427977U CN211039958U CN 211039958 U CN211039958 U CN 211039958U CN 201921427977 U CN201921427977 U CN 201921427977U CN 211039958 U CN211039958 U CN 211039958U
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Abstract
The utility model discloses a steel bushing steel insulating tube applied to heating power pipe network, which comprises a heat insulating layer, an inner medium pipe, an outer protective pipe and a connecting frame for connecting the inner medium pipe and the outer protective pipe, wherein the connecting frame comprises a connecting sleeve and a connecting rod, the utility model changes the connecting form of the prior steel bushing steel insulating tube, changes the rigid connection between the layer pipe and the outer pipe into elastic connection, and selects a high-strength spring during production to increase the connection stability of the inner medium pipe and the outer protective pipe, when the temperature change causes the deformation of the inner medium pipe and the outer protective pipe, the prior rigid connection can cause the structural change of the insulating tube, because the movable connection of the connecting sleeve and the connecting rod of the utility model, the deformation of the insulating tube can not cause the structural change, so that the connecting rod and the connecting sleeve slide relatively, increased the utility model discloses a structural stability.
Description
Technical Field
The utility model belongs to the technical field of pipeline and accessory, especially, relate to a be applied to steel bushing steel insulating tube of heating power pipe network.
Background
As is well known, steel bushing steel insulating tube comprises inside and outside two-layer pipeline, inlayer pipeline and outer pipeline are fixed between through, set up the heat preservation between inlayer and the skin, set up insulation material in advance between inlayer pipeline and outer pipeline, changed and laid the pipeline earlier then at the working method of installation heat preservation in the past, great improvement work efficiency, but in some heating power pipe networks, when the higher medium of delivery temperature, the inlayer pipeline, between and outer pipeline are because the expansion coefficient is not identical, must take place deformation each other, very easily cause the deformation of pipeline to appear breaking even.
SUMMERY OF THE UTILITY MODEL
To the problem in the background, the utility model aims to provide a be applied to steel bushing steel insulating tube of heating power pipe network.
In order to achieve the above object, the utility model provides a steel-sheathed-steel thermal insulation pipe applied to a heating power pipe network, which comprises a thermal insulation layer, an inner medium pipe, an outer protective pipe and a connecting frame for connecting the inner medium pipe and the outer protective pipe, wherein the outer protective pipe is sheathed outside the inner medium pipe, the inner medium pipe and the outer protective pipe are coaxially arranged, the thermal insulation layer is arranged between the inner medium pipe and the outer protective pipe, one end of the connecting frame and the outer wall of the inner medium pipe are mutually connected, the other end of the connecting frame and the inner wall of the outer protective pipe are mutually connected, the connecting frame comprises a connecting sleeve and a connecting rod, one end of the connecting sleeve, which is close to the connecting rod, is provided with a fixed plate, the fixed plate is provided with a first through hole mutually matched with the connecting rod, the connecting rod can movably penetrate through the first through hole, one end of the connecting sleeve, which is far, the one end that connecting sleeve was kept away from to the connecting rod sets up on the lateral wall of inlayer medium pipe, and the one end that the connecting rod is close to connecting sleeve is provided with the screw thread district, the screw thread district is provided with the external screw thread, and the both sides of the relative first through-hole in screw thread district respectively are provided with a fastening nut, fastening nut is provided with the internal thread that matches each other with the external screw thread in screw thread district, and fastening nut takes place relative slip with restriction connecting sleeve and connecting rod interconnect through the cooperation of the external screw thread in internal thread and screw thread district, and the spring interconnect is passed through to the one end that connecting sleeve kept away from the connecting.
Because relative sliding often takes place between connecting rod and the fixed plate, in order to increase the wearability of fixed plate and connecting rod, the life of extension equipment, the inner wall of first through-hole and the surface of connecting rod all are provided with the nitride layer, the thickness of nitride layer is 0.2-0.3 millimeter.
In order to further increase the utility model discloses a heat preservation effect of heat preservation, the heat preservation includes cotton insulating layer of glass, interior aluminium foil reflection stratum and outer aluminium foil reflection stratum, interior aluminium foil reflection stratum set up in between glass insulating layer and the inlayer medium pipe, outer aluminium foil reflection stratum sets up between glass insulating layer and outer protective pipe, and interior aluminium foil transmitting layer, outer aluminium foil reflection stratum and the cotton insulating layer of glass all with the coaxial setting of inlayer medium pipe.
In order to improve the utility model discloses an anticorrosive property, the lateral wall of outer protective tube is provided with the anticorrosive coating, the thickness of anticorrosive coating is 5 millimeters at least.
In order to increase the utility model discloses the anticorrosive effect of anticorrosive coating, the anticorrosive coating is including sintering epoxy powder layer, adhesive linkage and polyethylene layer, sintering epoxy powder layer the adhesive linkage with the polyethylene layer sets gradually from inside to outside along the radial of outer protective tube.
In order to increase the utility model discloses an overall structure's stability improves the joint strength between inlayer medium pipe and the outer protective tube, the link sets up the multiunit along the trend of inlayer medium pipe, and the axis of the relative inlayer medium pipe of link of group evenly arranges along the circumferencial direction of inlayer medium pipe.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a steel bushing steel heat preservation pipe applied to heating power pipe network, which comprises a heat preservation layer, an inner medium pipe, an outer protective pipe and a connecting frame for connecting the inner medium pipe with the outer protective pipe, wherein the outer protective pipe is sleeved outside the inner medium pipe, the inner medium pipe and the outer protective pipe are coaxially arranged, the heat preservation layer is arranged between the inner medium pipe and the outer protective pipe, one end of the connecting frame and the outer wall of the inner medium pipe are mutually connected, the other end is mutually connected with the inner wall of the outer protective pipe, the connecting frame comprises a connecting sleeve and a connecting rod, one end of the connecting sleeve close to the connecting rod is provided with a fixing plate, the fixing plate is provided with a first through hole mutually matched with the connecting rod, the connecting rod can movably penetrate through the first through hole, one end of the connecting sleeve far away from the connecting rod is arranged on the inner side wall of the outer, the utility model changes the connecting form of the prior steel sleeve steel thermal insulation pipe, changes the rigid connection between the layer pipe and the outer layer pipe into the elastic connection, and selects a high-strength spring during the production to increase the connection stability of the inner layer medium pipe and the outer layer protective pipe, cause when the temperature variation the utility model discloses when inner medium pipe, outer protective tube take place deformation, rigid connection probably leads to the structural change of insulating tube in the past, because the utility model discloses the swing joint of adapter sleeve and connecting rod, the deformation of insulating tube can not make the structure produce the change, makes connecting rod and adapter sleeve take place relative slip, has increased the utility model discloses a structural stability.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the present invention at a point a in fig. 1.
Fig. 3 is a schematic structural view of the heat-insulating layer of the present invention.
Fig. 4 is a schematic structural diagram of the corrosion protection layer of the present invention.
In the drawings, the reference numbers: 1. a heat-insulating layer; 2. an inner layer medium pipe; 3. an outer protective tube; 4. a connecting frame; 5. connecting a sleeve; 6. connecting; 7. a fixing plate; 8. a first through hole; 9. a threaded region; 10. fastening a nut; 11. a spring; 12. a nitride layer; 13. a glass wool heat insulation layer; 14. an inner aluminum foil reflective layer; 15. an outer aluminum foil reflective layer; 16. an anticorrosive layer; 17. sintering the epoxy powder layer; 18. an adhesive layer; 19. a polyethylene layer.
Detailed Description
In order to make the technical solution of the present invention more apparent, the present invention is further described in detail with reference to the following examples, and it should be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.
Referring to the attached drawings, the steel-sheathed-steel thermal insulation pipe applied to a heating power pipe network comprises a thermal insulation layer 1, an inner medium pipe 2, an outer protective pipe 3 and a connecting frame 4 for connecting the inner medium pipe 2 and the outer protective pipe 3, wherein the outer protective pipe 3 is sleeved outside the inner medium pipe 2, the inner medium pipe 2 and the outer protective pipe 3 are coaxially arranged, the thermal insulation layer 1 is arranged between the inner medium pipe 2 and the outer protective pipe 3, one end of the connecting frame 4 and the outer wall of the inner medium pipe 2 are mutually connected, the other end is mutually connected with the inner wall of the outer protective pipe 3, the connecting frame 4 comprises a connecting sleeve 5 and a connecting rod 6, one end of the connecting sleeve 5, which is close to the connecting rod 6, is provided with a fixing plate 7, the fixing plate 7 is provided with a first through hole 8 mutually matched with the connecting rod 6, and the connecting rod 6 can movably penetrate through the first through hole 8, one end of the connecting sleeve 5, which is far away from the connecting rod 6, is arranged on the inner side wall of the outer protective pipe 3, one end of the connecting rod 6, which is far away from the connecting sleeve 5, is arranged on the outer side wall of the inner medium pipe 2, one end of the connecting rod 6, which is near to the connecting sleeve 5, is provided with a threaded area 9, the threaded area 9 is provided with external threads, two sides of the threaded area 9, which are opposite to the first through hole 8, are respectively provided with a fastening nut 10, the fastening nut 10 is provided with internal threads which are mutually matched with the external threads of the threaded area 9, the fastening nut 10 is mutually connected with the connecting rod 6 through the matching of the internal threads and the external threads of the threaded area 9 to limit the relative sliding of the connecting sleeve 5 and the connecting rod 6, one end of the connecting sleeve 5, which is far away from, cause the distance between inlayer medium pipe 2 and the outer protective tube 3 to produce little change, because be provided with spring 11 between connecting sleeve 5 and the connecting rod 6 for elastic connection between connecting rod 6 and the connecting sleeve 5, when deformation produced, make to produce relative slip between connecting rod 6 and the connecting sleeve 5, avoided right the utility model discloses an overall structure produces the influence, has improved the utility model discloses an overall structure's stability, the higher medium of transport temperature that moreover can be safer has solved rigid connection's steel bushing steel insulating tube in the past and has leaded to the problem of structural change because deformation.
Preferably, the inner wall of the first through hole 8 and the outer surface of the connecting rod 6 are both provided with a nitrided layer 12, the thickness of the nitrided layer 12 is 0.2-0.3 mm, and the nitrided layer 12 can effectively increase the wear resistance of the fixing plate 7 and the connecting rod 6, so that the service life of the device is prolonged.
Preferably, heat preservation 1 includes cotton insulating layer 13 of glass, interior aluminium foil reflection stratum 14 and outer aluminium foil reflection stratum 15, interior aluminium foil reflection stratum 14 set up in between glass insulating layer and the inlayer medium pipe 2, outer aluminium foil reflection stratum 15 sets up between glass insulating layer and outer protective tube 3, and interior aluminium foil transmission layer, outer aluminium foil reflection stratum 15 and the cotton insulating layer 13 of glass all with the coaxial setting of inlayer medium pipe 2, and the cotton insulating layer 13 of glass can be right the utility model discloses the effectual thermal-insulated effect that keeps warm that plays, the thermal-insulated effect of further improvement heat preservation of thermal radiation energy is passed through in the reflection of two-layer aluminium foil.
Preferably, the lateral wall of outer protective tube 3 is provided with anticorrosive coating 16, anticorrosive coating 16's thickness is 5 millimeters at least, and anticorrosive coating 16 can effectual improvement the utility model discloses an outer protective tube 3's corrosion protection performance.
Preferably, the anticorrosive coating 16 includes sintering epoxy powder layer 17, adhesive linkage 18 and polyethylene layer 19, sintering epoxy powder layer 17 the adhesive linkage 18 with polyethylene layer 19 sets gradually from inside to outside along outer protective tube 3 radially, sets up sintering epoxy powder layer 17 and polyethylene layer 19 to combine both through adhesive linkage 18, sintering epoxy powder and polyethylene all have good dampproofing corrosion resistance, and the insulating tube is buried underground, is in under the humid environment for a long time, can effectually prevent the utility model discloses a corrosion.
Preferably, link 4 sets up the multiunit along the trend of inlayer medium pipe 2, and the axis of the relative inlayer medium pipe 2 of link 4 of group and along the circumferencial direction of inlayer medium pipe 2 evenly arrange, can increase the joint strength between inlayer medium pipe 2 and the outer protective tube 3, increased the utility model discloses an overall structure stability.
The utility model discloses a working process: in one embodiment, an outer protective pipe 3 is sleeved outside an inner medium pipe 2, the inner medium pipe 2 and the outer protective pipe 3 are coaxially arranged, a heat insulation layer 1 is arranged between the inner medium pipe 2 and the outer protective pipe 3, one end of a connecting frame 4 and the outer wall of the inner medium pipe 2 are connected with each other, the other end is connected with the inner wall of the outer protective pipe 3, the connecting frame 4 comprises a connecting sleeve 5 and a connecting rod 6, one end of the connecting sleeve 5, which is close to the connecting rod 6, is provided with a fixing plate 7, the fixing plate 7 is provided with a first through hole 8 which is matched with the connecting rod 6, the connecting rod 6 can movably penetrate through the first through hole 8, one end of the connecting sleeve 5, which is far away from the connecting rod 6, is arranged on the inner side wall of the outer protective pipe 3, one end of the connecting rod 6, which is far away from the connecting sleeve 5, is arranged on the outer side wall of the, when the change because external temperature, the utility model discloses take place deformation, cause the distance between inlayer medium pipe 2 and the outer protective tube 3 to produce little change, because be provided with spring 11 between adapter sleeve 5 and the connecting rod 6 for elastic connection between connecting rod 6 and the adapter sleeve 5, when deformation produced, make to produce relative slip between connecting rod 6 and the adapter sleeve 5, avoided right the utility model discloses an overall structure produces the influence, has improved the utility model discloses an overall structure's stability, the higher medium of transport temperature that moreover more can be safe has solved rigid connection's steel bushing steel insulating tube in the past and has leaded to the problem of structural change because deformation.
In another embodiment, when the temperature changes, even the deformation volume is very little, when producing great impact force, connecting rod 6 and adapter sleeve 5 are easy to break away from, and relative fixed plate 7 volume both sides respectively set up a fastening nut 10 in connecting rod 6's threaded area 9, and the size of fastening nut 10 is greater than the size of first through-hole 8, and fastening nut 10 can restrict connecting rod 6 and adapter sleeve 5 and break away from, and can set for certain surplus between fastening nut 10 and the fixed plate 7 to make connecting rod 6 and adapter sleeve 5 take place relative slip, the utility model discloses select spring 11 that the coefficient of deformation is less than 0.5m/kN for use when producing, outer protective tube 3 cover is established to the outside of inlayer medium pipe 2, and inlayer medium pipe 2 and outer protective tube 3 coaxial arrangement, heat preservation 1 sets up between inlayer medium pipe 2 and outer protective tube 3, the one end of link 4 and the outer wall interconnect other end of inlayer medium pipe 2 and the inner wall looks of outer protective tube 3 are mutually connected The mutual connection, link 4 includes adapter sleeve 5 and connecting rod 6, the one end that adapter sleeve 5 is close to connecting rod 6 is provided with fixed plate 7, fixed plate 7 be provided with connecting rod 6 first through-hole 8 that matches each other, connecting rod 6 mobile run through first through-hole 8, the one end that connecting rod 6 was kept away from to adapter sleeve 5 set up on outer protective tube 3's inside wall, the one end that connecting rod 5 was kept away from to connecting rod 6 sets up on the lateral wall of inlayer medium pipe 2, and connecting rod 6 is close to the one end of adapter sleeve 5 and is provided with threaded area 9, threaded area 9 is provided with the external screw thread, and threaded area 9 respectively is provided with a fastening nut 10 in the relative both sides of first through-hole 8, fastening nut 10 is provided with the internal thread that matches each other with the external screw thread of threaded area 9, and fastening nut 10 passes through the cooperation of the external screw thread of internal thread and threaded area 9 and.
In the description herein, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description herein, it is to be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, and may be direct or indirect via an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (6)
1. A steel-sheathed-steel heat-insulating pipe applied to a heating power pipe network comprises a heat-insulating layer (1), an inner medium pipe (2), an outer protective pipe (3) and a connecting frame (4) used for connecting the inner medium pipe (2) and the outer protective pipe (3), wherein the outer protective pipe (3) is sleeved outside the inner medium pipe (2), the inner medium pipe (2) and the outer protective pipe (3) are coaxially arranged, the heat-insulating layer (1) is arranged between the inner medium pipe (2) and the outer protective pipe (3), one end of the connecting frame (4) and the outer wall of the inner medium pipe (2) are mutually connected, the other end of the connecting frame and the inner wall of the outer protective pipe (3) are mutually connected, the steel-sheathed-steel heat-insulating pipe is characterized in that the connecting frame (4) comprises a connecting sleeve (5) and a connecting rod (6), one end of the connecting sleeve (5) close to the connecting rod (6) is provided with a, the fixing plate (7) is provided with a first through hole (8) matched with the connecting rod (6), the connecting rod (6) can movably penetrate through the first through hole (8), one end, far away from the connecting rod (6), of the connecting sleeve (5) is arranged on the inner side wall of the outer protective pipe (3), one end, far away from the connecting sleeve (5), of the connecting rod (6) is arranged on the outer side wall of the inner medium pipe (2), a threaded area (9) is arranged at one end, close to the connecting sleeve (5), of the connecting rod (6), the threaded area (9) is provided with external threads, fastening nuts (10) are respectively arranged on two sides, opposite to the first through hole (8), of the threaded area (9), the fastening nuts (10) are provided with internal threads matched with the external threads of the threaded area (9), and the fastening nuts (10) are mutually connected with the connecting rod (6) through matching of the internal threads and the external threads of the threaded area (9) to limit the connecting sleeve ( And one end of the connecting sleeve (5) far away from the connecting rod (6) and one end of the connecting rod (6) close to the connecting sleeve (5) are connected with each other through a spring (11).
2. The steel-sheathed-steel thermal insulation pipe applied to a thermal pipe network according to claim 1, wherein the inner wall of the first through hole (8) and the outer surface of the connecting rod (6) are both provided with a nitride layer (12), and the thickness of the nitride layer (12) is 0.2-0.3 mm.
3. The steel-sheathed-steel thermal insulation pipe applied to a thermal pipe network of claim 1, wherein the thermal insulation layer (1) comprises a glass wool thermal insulation layer (13), an inner aluminum foil reflection layer (14) and an outer aluminum foil reflection layer (15), the inner aluminum foil reflection layer (14) is arranged between the glass wool thermal insulation layer (13) and the inner medium pipe (2), the outer aluminum foil reflection layer (15) is arranged between the glass wool thermal insulation layer and the outer protective pipe (3), and the inner aluminum foil emission layer, the outer aluminum foil reflection layer (15) and the glass wool thermal insulation layer (13) are coaxially arranged with the inner medium pipe (2).
4. The steel-sheathed-steel thermal insulation pipe applied to a thermal pipe network according to claim 1, wherein an anticorrosive layer (16) is arranged on the outer side wall of the outer protective pipe (3), and the thickness of the anticorrosive layer (16) is at least 5 mm.
5. The steel-sheathed-steel thermal insulation pipe applied to a thermal pipe network according to claim 4, wherein the anti-corrosion layer (16) comprises a sintered epoxy powder layer (17), an adhesive layer (18) and a polyethylene layer (19), and the sintered epoxy powder layer (17), the adhesive layer (18) and the polyethylene layer (19) are sequentially arranged from inside to outside along the radial direction of the outer protective pipe (3).
6. The steel-sheathed-steel thermal insulation pipe applied to a thermal pipe network according to any one of claims 1 to 5, wherein the connecting frames (4) are arranged in a plurality of groups along the trend of the inner-layer medium pipe (2), and the connecting frames (4) in the groups are uniformly arranged along the circumferential direction of the inner-layer medium pipe (2) relative to the axis of the inner-layer medium pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427977.6U CN211039958U (en) | 2019-08-30 | 2019-08-30 | Steel-sheathed-steel heat-insulation pipe applied to heating power pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427977.6U CN211039958U (en) | 2019-08-30 | 2019-08-30 | Steel-sheathed-steel heat-insulation pipe applied to heating power pipe network |
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| CN211039958U true CN211039958U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921427977.6U Active CN211039958U (en) | 2019-08-30 | 2019-08-30 | Steel-sheathed-steel heat-insulation pipe applied to heating power pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096971A (en) * | 2020-09-01 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | High temperature resistant pipeline structure suitable for high temperature fluid is carried |
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2019
- 2019-08-30 CN CN201921427977.6U patent/CN211039958U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096971A (en) * | 2020-09-01 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | High temperature resistant pipeline structure suitable for high temperature fluid is carried |
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