CN202955402U - Steam direct buried pipe - Google Patents
Steam direct buried pipe Download PDFInfo
- Publication number
- CN202955402U CN202955402U CN 201220622199 CN201220622199U CN202955402U CN 202955402 U CN202955402 U CN 202955402U CN 201220622199 CN201220622199 CN 201220622199 CN 201220622199 U CN201220622199 U CN 201220622199U CN 202955402 U CN202955402 U CN 202955402U
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- Prior art keywords
- core pipe
- pipe
- thermal insulation
- insulation layer
- outer sleeve
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Abstract
The utility model discloses a steam direct buried pipe which comprises an outer sleeve, a core pipe, a thermal insulation structure wrapping the core pipe, a fixed support and a movable support. The fixed support and the movable support are arranged between the outer sleeve and the core pipe, a corrugated expansion joint is positioned at one end of the core pipe, the fixed support is arranged at the other end of the core pipe, the movable support is evenly arranged between the corrugated expansion joint and the fixed support, and an A gap is arranged between one end of a protection sleeve of the corrugated expansion joint and the core pipe. A remediation device is arranged at the end, where the A gap is positioned between the protection sleeve and the core pipe, of the core pipe in a same circle center mode. The A gap is communicated with the remediation device, the remediation device is provided with an air exhaust pipe, the fixed support in a horn shape, and a thermal insulation pad is positioned on the movable support between the core pipe and a hoop. The steam direct buried pipe prolongs service life of equipment, reduces heat loss and increases the heat supply radius.
Description
Technical field
The utility model relates to heat power equipment manufacturing technology field, is specifically related to insulated steam pipe.
Background technique
Insulated steam pipe be a kind of be embedded in underground in order to lay the steam line of remote heat supply; comprise core pipe, outer sleeve and be located at thermal insulation layer between the two; steam circulates in the core pipe; thermal insulation layer is in order to reduce the temperature drop in the vapor transmission process, and outer sleeve plays the effect of isolated earth, support and protective core pipe.
Prior art is in the process of manufacturing insulated steam pipe, generally to use hard polyurethane foam, rock wool to be incubated processing to pipeline, the situation of deformation and failure, easily appear in the heat resistance of hard polyurethane foam and poor fire, is not suitable for separately using as the thermal insulation layer of high-temperature pipe; And the hydrophobicity of rock wool is poor, be difficult to return to original performance after immersion, that unit weight becomes is large, length of staple shortens, the effect of heat insulation variation, and when rock wool runs into the situation of pipe leakage, heat insulation effect significantly reduces, and can not be guaranteed the working life of pipeline.
The core pipe of insulated steam pipe and outer sleeve are metal material, support must be set to avoid causing thermal insulation layer distortion, impaired because of the weight effect of core pipe, and then affect heat insulation effect, the support arranged between steam direct-buried tube core pipe and outer sleeve is divided into two kinds of fixed support and travel(l)ing rests, fixed support of the prior art is along the core caliber to fixing annulus, its internal diameter equals the external diameter of core pipe, its external diameter equals the internal diameter of outer sleeve, the fixed support of this structure, core pipe and the outer sleeve temperature variation after passing into steam is different, the thermal expansion degree of core pipe is higher than outer sleeve, the power of core tube swelling outwards acts on outer sleeve by support vertical, the effect of power is mutual, core tube wall also is subject to equal and opposite in direction, the active force of opposite direction, easily cause the breakage of core pipe, tear, steam leaks, drench or the thermal insulation layer that destroys by rush of water, cause permanent damage, the working life of equipment is shorter, in addition, the difference that the heat transfer distances of support equals outer sleeve internal diameter and core pipe external diameter is minimum value, and in the core pipe, the heat energy of steam conducts to through support maximum that outer sleeve scatters and disappears, and is the structural type of temperature drop maximum.
The displacement amount that compensator brings with absorbent core pipe expanded by heating must be set on the core pipe between two fixed supports of insulated steam pipe; Compensator commonly used is corrugated expansion joint and sleeve expansion joint at present, wherein corrugated expansion joint is subject to the restriction of cold draw, there is flexible tired problem, the restriction of access times is arranged, and sleeve expansion joint is taked the sealing of high pressure bulking agent, the restriction of access times is also arranged, and the number of times limited all can occur not arrive and the situation that accident is revealed in two kinds of compensators in actual use; Once and for the compensator of connecting core pipe, reveal, not only can bring destruction to thermal insulation layer, and the anticorrosive coat that can not under the operating mode higher than 80 ℃, use to outer sleeve brings destruction, have a strong impact on the working life of equipment, reveal and account for 90% of sum because compensator damages the pipeline caused at present.
Travel(l)ing rest of the prior art is the interior pipe and the outer pipe that is enclosed within outer sleeve inner wall that are enclosed within core tube wall, the two connects with one heart with positioning rod, during the pipeline expanded by heating, interior pipe and core pipe and outer pipe and outer sleeve generation sliding friction, driving pipeline is only moving axially, by compensator equilibrium displacement amount, frictional force between the travel(l)ing rest of this structure and core pipe and outer sleeve is larger, pipeline easily weares and teares, destroy thermal insulation layer, the working life of equipment is shorter, travel(l)ing rest directly contacts with the core pipe in addition, the amount that the heat energy of steam conducts to outer sleeve by support is more, the temperature drop value of unit length is larger, the distance that steam can be carried is shorter.
In sum, the insulated steam pipe of prior art manufacture exists working life short, heat-energy losses and causes greatly the problem that heat range of heat is little.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of insulated steam pipe, can solve insulated steam pipe of the prior art shorter working life, and heat-energy losses causes greatly the problem that heat range of heat is little simultaneously.
The utility model is achieved through the following technical solutions:
A kind of insulated steam pipe, comprise outer sleeve, core pipe, be wrapped in the insulating structure of core pipe, and be arranged at fixed support, the travel(l)ing rest between outer sleeve and core pipe, described core Guan Yiduan is provided with corrugated expansion joint, described fixed support is located at the other end of core pipe, and travel(l)ing rest is evenly distributed between corrugated expansion joint and fixed support;
Be provided with the A gap between protecting cover one end of described corrugated expansion joint and core pipe, be provided with at protecting cover and core pipe on the core pipe of this end in A gap, concentric is arranged with remedies device, described A gap with remedy device and be communicated with, the described device of remedying is provided with exhaust steam pipe;
Described fixed support flare, the opening diameter of its less end equates with the external diameter of core pipe, the opening diameter of its larger end equates with the outer sleeve internal diameter;
The assistant support that described travel(l)ing rest is connected in clip by clip and decile forms, and described assistant support end is provided with roller, and described roller rolls and is connected in the outer sleeve internal surface, between core pipe and clip, is provided with thermal insulating pad.
The further improvement of the utility model scheme is, remedying device comprises and is provided with successively from outside to inside protective housing, bellows, the same end of described protective housing, bellows is sealedly attached to protecting cover, and the other end of bellows is sealedly attached to the core pipe, between the other end of protective housing and core pipe, is provided with the B gap; Described exhaust steam pipe is communicated in bellows, and exhaust steam pipe outwards passes protective housing, the set hole of outer sleeve.
The further improvement of the utility model scheme is, the position that is tightly connected of bellows one end and compensator is positioned at the periphery, A gap of protecting cover and core pipe.
The further improvement of the utility model scheme is that the angle angle that the outer wall of support bracket fastened sidewall and core pipe forms is 30 ~ 45 °; Described fixed support two-port edge welds with outer sleeve inner wall, core tube wall respectively.
The further improvement of the utility model scheme is, thermal insulating pad is combined by two semicircular structures, and described thermal insulating pad is made by asbestos slate.
The further improvement of the utility model scheme is, clip periphery decile is connected with three assistant supports, and described three assistant supports are arranged at respectively the neutral position between the chucking arm of clip periphery.
The further improvement of the utility model scheme is, insulating structure comprises thermal insulation layer, reflecting layer and protective layer, and described thermal insulation layer be take the core pipe and is followed successively by from the inside to surface as axle center: the first thermal insulation layer, the second thermal insulation layer, the 3rd thermal insulation layer; Take the core pipe and be followed successively by from the inside to surface as axle center in described reflecting layer: the first reflecting layer, the second reflecting layer, the 3rd reflecting layer, and first, second, third reflecting layer alternately axially is sheathed on the outside of the first thermal insulation layer, the second thermal insulation layer, the 3rd thermal insulation layer; Described protective layer is wrapped in the outside in the 3rd reflecting layer.
The further improvement of the utility model scheme is that the aerosil insulation quilt that the first thermal insulation layer and the second thermal insulation layer are 10mm ± 2mm by thickness is made; The glass wool that described the 3rd thermal insulation layer is 50mm ± 5mm by thickness is made.
The further improvement of the utility model scheme is that the aluminium foil glass fiber fabric that the first reflecting layer is 180g ± 20g by grammes per square metre is made; The aluminium foil glass fiber fabric that described the second reflecting layer and the 3rd reflecting layer are 110g ± 10g by grammes per square metre is made.
The further improvement of the utility model scheme is that the color steel that protective layer is 0.5mm ± 0.2mm by thickness is made.
The utility model will advantage compared with prior art be:
One, in the compensator of avoiding damaging, steam directly impacts and destroys thermal insulation layer; The steam that outlet pipe can avoid compensator to leak out accumulates in outer sleeve, thereby avoiding outer sleeve to bear high temperature causes the appearance anticorrosive coat to come off, extend the working life of pipeline, when compensator damages leakage, the steam that leaks sprays by outlet pipe, directly perceived visible, bring very large facility to service work;
Two, the sidewall tilted effectively decomposes core tube swelling power, greatly reduces the active force between core pipe and outer sleeve, has extended the working life of core pipe, has increased the operational safety of equipment, has reduced maintenance and has dropped into, and has improved the benefit of enterprise; Increase heat transfer distances simultaneously, effectively reduced the heat-energy losses of steam, greatly extended the heat range of heat of heating pipeline;
Three, travel(l)ing rest is connected with sliding friction formula between outer sleeve to changing into rolls connects, greatly reduces the frictional force between travel(l)ing rest and outer sleeve, effectively extended the working life of equipment; Set up thermal insulating pad between travel(l)ing rest and core pipe, greatly reduce the heat energy emission of steam in the core pipe, reduced the unit length temperature drop value of insulated steam pipe, improved the heat insulation effect of insulated steam pipe, greatly extended heat range of heat simultaneously;
Four, its high insulating effect of the thermal insulation layer be made by aerosil also has waterproof, frpf characteristics simultaneously, can not be subject to the impact of water or high temperature and be subject to permanent damage, has greatly extended the working life of insulated steam pipe.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the heat insulation layer structure schematic diagram.
Fig. 3 is the moving rack structure schematic diagram.
Fig. 4 is the compensator structure schematic diagram.
Embodiment
A kind of insulated steam pipe as shown in Figure 1, comprise outer sleeve 1, core pipe 2, be wrapped in the insulating structure 3 of core pipe 2, and be arranged at fixed support 4, the travel(l)ing rest 5 between outer sleeve 1 and core pipe 2, described core pipe 2 one ends are provided with corrugated expansion joint 6, described fixed support 4 is located at the other end of core pipe 2, and travel(l)ing rest 5 is evenly distributed between corrugated expansion joint 6 and fixed support 4;
Be provided with A gap 62 between protecting cover 61 1 ends of described corrugated expansion joint 6 and core pipe 2, at protecting cover 61 and core pipe 2, be provided with on the core pipe 2 of this end in A gap 62, concentric is arranged with remedies device, described A gap 62 with remedy device and be communicated with, the described device of remedying is provided with exhaust steam pipe 66;
Described fixed support 4 flares, the opening diameter of its less end equates with the external diameter of core pipe 2, the opening diameter of its larger end equates with outer sleeve 1 internal diameter;
The assistant support 52 that described travel(l)ing rest 5 is connected in clip 51 by clip 51 and decile forms, and described assistant support 52 ends are provided with roller 53, and described roller 4 rolls and is connected in outer sleeve 1 internal surface, between core pipe 2 and clip 51, is provided with thermal insulating pad 54.
As shown in Figure 4, remedying device comprises and is provided with successively from outside to inside protective housing 63, bellows 64, the same end of described protective housing 63, bellows 64 is sealedly attached to protecting cover 61, and the other end of bellows 64 is sealedly attached to core pipe 2, between the other end of protective housing 63 and core pipe 2, is provided with B gap 65; Described exhaust steam pipe 66 is communicated in bellows 64, and exhaust steam pipe 66 outwards passes protective housing 63, the set hole of outer sleeve 1.
As shown in Figure 4, the position that is tightly connected of bellows 64 1 ends and compensator 6, be positioned at 61 peripheries, A gap of protecting cover 62 and core pipe 2.
As shown in Figure 1, the angle angle that the outer wall of the sidewall of fixed support 4 and core pipe 2 forms is 30 ~ 45 °; Described fixed support 4 two-port edges weld with outer sleeve 1 inwall, core pipe 2 outer walls respectively.
As shown in Figure 3, thermal insulating pad 54 is combined by two semicircular structures, and described thermal insulating pad 54 is made by asbestos slate.
As shown in Figure 3, clip 51 periphery deciles are connected with three assistant supports 52, and described three assistant supports 52 are arranged at respectively the neutral position between the chucking arm of clip 51 peripheries.
As shown in Figure 2, insulating structure 3 comprises thermal insulation layer, reflecting layer and protective layer 37, and described thermal insulation layer be take core pipe 2 and is followed successively by from the inside to surface as axle center: the first thermal insulation layer 31, the second thermal insulation layer 32, the 3rd thermal insulation layer 33; Take core pipe 2 and be followed successively by from the inside to surface as axle center in described reflecting layer: the first reflecting layer 34, the second reflecting layer 35,36, first, second, third reflecting layer 34,35,36, the 3rd reflecting layer alternately axially are sheathed on the outside of the first thermal insulation layer 31, the second thermal insulation layer 32, the 3rd thermal insulation layer 3; Described protective layer 37 is wrapped in the outside in the 3rd reflecting layer 36.
As shown in Figure 2, the aerosil insulation quilt that the first thermal insulation layer 31 and the second thermal insulation layer 32 are 10mm ± 2mm by thickness is made; The glass wool that described the 3rd thermal insulation layer 33 is 50mm ± 5mm by thickness is made.
As shown in Figure 2, the aluminium foil glass fiber fabric that the first reflecting layer 34 is 180g ± 20g by grammes per square metre is made; The aluminium foil glass fiber fabric that described the second reflecting layer 35 and the 3rd reflecting layer 36 are 110g ± 10g by grammes per square metre is made.
As shown in Figure 2, the color steel that protective layer 37 is 0.5mm ± 0.2mm by thickness is made.
Claims (10)
1. an insulated steam pipe, comprise outer sleeve (1), core pipe (2), be wrapped in the insulating structure (3) of core pipe (2), and be arranged at fixed support (4), the travel(l)ing rest (5) between outer sleeve (1) and core pipe (2), described core pipe (2) one ends are provided with corrugated expansion joint (6), described fixed support (4) is located at the other end of core pipe (2), and travel(l)ing rest (5) is evenly distributed between corrugated expansion joint (6) and fixed support (4), it is characterized in that:
Be provided with A gap (62) between protecting cover (61) one ends of described corrugated expansion joint (6) and core pipe (2), at protecting cover (61) and core pipe (2), be provided with on the core pipe (2) of this end in A gap (62), concentric is arranged with remedies device, described A gap (62) with remedy device and be communicated with, the described device of remedying is provided with exhaust steam pipe (66);
Described fixed support (4) flare, the opening diameter of its less end equates with the external diameter of core pipe (2), the opening diameter of its larger end equates with outer sleeve (1) internal diameter;
The assistant support (52) that described travel(l)ing rest (5) is connected in clip (51) by clip (51) and decile forms, described assistant support (52) end is provided with roller (53), described roller (4) rolls and is connected in outer sleeve (1) internal surface, between core pipe (2) and clip (51), is provided with thermal insulating pad (54).
2. a kind of insulated steam pipe as claimed in claim 1, it is characterized in that: the described device of remedying comprises and is provided with successively from outside to inside protective housing (63), bellows (64), the same end of described protective housing (63), bellows (64) is sealedly attached to protecting cover (61), the other end of bellows (64) is sealedly attached to core pipe (2), between the other end of protective housing (63) and core pipe (2), is provided with B gap (65); Described exhaust steam pipe (66) is communicated in bellows (64), and exhaust steam pipe (66) outwards passes protective housing (63), the set hole of outer sleeve (1).
3. a kind of insulated steam pipe as claimed in claim 2 is characterized in that: the position that is tightly connected of described bellows (64) one ends and compensator (6) is positioned at the periphery, A gap (61) of protecting cover (62) and core pipe (2).
4. a kind of insulated steam pipe as claimed in claim 1, it is characterized in that: the angle angle that the outer wall of the sidewall of described fixed support (4) and core pipe (2) forms is 30 ~ 45 °; Described fixed support (4) two-port edge welds with outer sleeve (1) inwall, core pipe (2) outer wall respectively.
5. a kind of insulated steam pipe as claimed in claim 1, it is characterized in that: described thermal insulating pad (54) is combined by two semicircular structures, and described thermal insulating pad (54) is made by asbestos slate.
6. a kind of insulated steam pipe as claimed in claim 1, it is characterized in that: described clip (51) periphery decile is connected with three assistant supports (52), and described three assistant supports (52) are arranged at respectively the neutral position between the chucking arm of clip (51) periphery.
7. a kind of insulated steam pipe as claimed in claim 1, it is characterized in that: described insulating structure (3) comprises thermal insulation layer, reflecting layer and protective layer (37), and described thermal insulation layer be take core pipe (2) and is followed successively by from the inside to surface as axle center: the first thermal insulation layer (31), the second thermal insulation layer (32), the 3rd thermal insulation layer (33); Take core pipe (2) and be followed successively by from the inside to surface as axle center in described reflecting layer: the first reflecting layer (34), the second reflecting layer (35), the 3rd reflecting layer (36), and first, second, third reflecting layer (34,35,36) alternately axially are sheathed on the outside of the first thermal insulation layer (31), the second thermal insulation layer (32), the 3rd thermal insulation layer (3); Described protective layer (37) is wrapped in the outside in the 3rd reflecting layer (36).
8. a kind of insulated steam pipe as claimed in claim 7, it is characterized in that: the aerosil insulation quilt that described the first thermal insulation layer (31) and the second thermal insulation layer (32) they are 10mm ± 2mm by thickness is made; The glass wool that described the 3rd thermal insulation layer (33) is 50mm ± 5mm by thickness is made.
9. a kind of insulated steam pipe as claimed in claim 7, it is characterized in that: the aluminium foil glass fiber fabric that described the first reflecting layer (34) is 180g ± 20g by grammes per square metre is made; The aluminium foil glass fiber fabric that described the second reflecting layer (35) and the 3rd reflecting layer (36) are 110g ± 10g by grammes per square metre is made.
10. a kind of insulated steam pipe as claimed in claim 7, it is characterized in that: the color steel that described protective layer (37) is 0.5mm ± 0.2mm by thickness is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622199 CN202955402U (en) | 2012-11-22 | 2012-11-22 | Steam direct buried pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622199 CN202955402U (en) | 2012-11-22 | 2012-11-22 | Steam direct buried pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955402U true CN202955402U (en) | 2013-05-29 |
Family
ID=48460974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622199 Withdrawn - After Issue CN202955402U (en) | 2012-11-22 | 2012-11-22 | Steam direct buried pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955402U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954309A (en) * | 2012-11-22 | 2013-03-06 | 淮安四方保温管有限公司 | Steam directly buried pipe |
| CN105090682A (en) * | 2014-05-15 | 2015-11-25 | 杭州三花研究院有限公司 | Heat-insulation pipe |
-
2012
- 2012-11-22 CN CN 201220622199 patent/CN202955402U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954309A (en) * | 2012-11-22 | 2013-03-06 | 淮安四方保温管有限公司 | Steam directly buried pipe |
| CN102954309B (en) * | 2012-11-22 | 2014-08-27 | 淮安四方保温管有限公司 | Steam directly buried pipe |
| CN105090682A (en) * | 2014-05-15 | 2015-11-25 | 杭州三花研究院有限公司 | Heat-insulation pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130529 Effective date of abandoning: 20140827 |
|
| RGAV | Abandon patent right to avoid regrant |