CN2570590Y - Sectional-partition type internal-fixing joint - Google Patents
Sectional-partition type internal-fixing joint Download PDFInfo
- Publication number
- CN2570590Y CN2570590Y CN 02260186 CN02260186U CN2570590Y CN 2570590 Y CN2570590 Y CN 2570590Y CN 02260186 CN02260186 CN 02260186 CN 02260186 U CN02260186 U CN 02260186U CN 2570590 Y CN2570590 Y CN 2570590Y
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- China
- Prior art keywords
- pipe
- middle sleeve
- working
- clamp
- steel pipe
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- Expired - Fee Related
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Abstract
The utility model relates to a sectional-partition type internal-fixing joint, which is applied to a prefabricated thermal insulation direct-buried laying steam line. The utility model has the structures that a middle sleeve pipe is arranged between a working pipe and an outer sleeve steel pipe; two clamping plates are provided with grooves and are correspondingly arranged on both sides of the middle sleeve pipe; a ring plate is clamped on the grooves of the two clamping plates and is not contacted with the outer sleeve steel pipe and the working pipe; one end of a sealing plate is sealed and fixedly connected with one end of the middle sleeve pipe and is sealed and fixedly connected with the outer wall of the working pipe simultaneously; the other end of the sealing plate is fixedly sealed and connected with the other end of the middle sleeve and is fixedly sealed and connected with the inner wall of the outer sleeve steel pipe simultaneously; moisture removing pipes are arranged on the outer sleeve pipe corresponding to both ends of the middle sleeve pipe; heat insulating materials are filled between the working pipe and the middle sleeve pipe and between the outer sleeve steel pipe and the middle sleeve pipe. The utility model enables the working pipe which is used for conveying steam to be especially arranged at a designated position and to be kept permanently fixed corresponding to the outer sleeve pipe, and air (or steam) of heat insulating space on both sides can be ensured not to be communicated.
Description
Technical field
The utility model is to be applied to prefabricated insulating to lay the interior fixing device of steam line, particularly makes the fixing device of the specially appointed position of working pipe of delivering vapor with respect to steel outer sleeve maintenance permanent fixation.
Background technique
The prefabricated insulating of delivering vapor lays in the steam line, guarantee that working pipe maintains static with respect to the steel sleeve pipe, usually in the some position of appointment steel sleeve pipe and working steel tube is welded with steel plate or steel member to get final product.But the working pipe temperature of delivering vapor is high more a lot of than steel sleeve pipe, and this fixation method can form heat bridge, causes that the steel sleeve pipe is overheated, causes steel sleeve pipe corrosion failure, also may cause damage to surrounding environment.Therefore fixed knot all adopts many disconnected heat bridge formula force transferring structures of cover now.Because adopt many cover members, the fixed knot both sides are that connect, packing less.The said fixing joint is qualified, perfect under normal state, but directly buried pipeline may leak owing to various reason generation outer steel pipe, surface water can enter in the sleeve pipe by the hole on the outer sleeve, slit, makes the suction of sleeve pipe inside thermal conservation material, and heat insulation function is impaired.A moisture content part that enters thermal insulation layer is scurried on another part vaporization adverse grade along the slope trickling, and internal surface of casing is condensed into water outside on the way, the low spot that trickle back again, serious involve whole bury heat supply network.More seriously occur the hole seam on the service pipe pipe fitting, the exhaust passage is brought up in the ejection from the hole seam of band super pressure-high temperature steam by force, and the steam place of arrival thermal insulating material that leaks can be destroyed, and is difficult to repair; In this case, the disconnected heat bridge formula force transferring structure of this many covers just can not guarantee the proper functioning of pipeline.Domestic existing a kind of partition-type fixed knot, cut off with ring flat-plate and outer and inner tube welded seal, be satisfactory with regard to cutting function, but the ring flat-plate heat bridge effect obviously can cause the outer steel pipe surface overheated, cause anticorrosion inefficacy or cause structural destruction that practical application still is difficult to guarantee the proper functioning of pipeline.
Summary of the invention
Subregion partition-type Internally fixed node includes working pipe 1, outer steel pipe 2, end-plate, thermal insulating material; It is characterized in that middle sleeve 8 is between working pipe 1 and outer steel pipe 2; Clamp 6, clamp 7 are formed a cover clamp; Clamp has groove, and two clamps are oppositely arranged the both sides that are positioned at middle sleeve 8 tube walls, and clamp 6 is fixedly connected on the inwall of outer steel pipe 2, and clamp 7 is fixedly connected on the outer wall of working pipe 1; Ring flat-plate 5 is stuck on the groove of two clamps, and ring flat-plate 5 does not contact with working pipe 1 with steel sleeve pipe 2; End-plate 4 is sealedly and fixedly connected with middle sleeve 8 one ends, is sealedly and fixedly connected with working pipe 1 outer wall simultaneously; End-plate 9 is sealedly and fixedly connected with middle sleeve 8 the other ends, fixedlys connected with outer steel pipe 2 inner wall sealings simultaneously; On the position of outer steel pipe 2, have humidity discharging pipe 3, humidity discharging pipe 10 with respect to middle sleeve 8 two ends.
Can be at middle sleeve 8 inboard and outside filled heat insulating materials.
During use, the utility model is installed in the position that buried heat insulation pipe net subregion cuts off, so in a single day breaks down, the zone of influence is limited in the enough little scope.Both prevented that harm from infinitely spreading, and was convenient to search the fault point again.
The utility model structure is seen accompanying drawing.Its working principle is as follows: outer steel pipe 2 limits ring flat-plates 5 along the displacement of conduit axis direction by clamp 6.Ring flat-plate 5 blocks clamp 7, clamp 7 thereby can not be along the tube's axis displacement.Clamp 7 is fixed on the working pipe 1, and working pipe 1 is limit extremely in 5 positions of ring flat-plate in the displacement of conduit axis direction with respect to Steel Sleeve 2.Clamp 7, ring flat-plate 5 and clamp 6 area of contact are very little; The passage that conducts heat is compressed to very narrow very narrow, has so just guaranteed that the steel sleeve surface temperature is not too high.Ring flat-plate 5 does not contact with working steel tube with the steel sleeve pipe, and keeps certain distance.The utility model is logical in order to stop gas (vapour) to be scurried along axis, is provided with end-plate 4 and end-plate 9, constitutes dividing plate with sufficiently long middle sleeve 8, makes gas (vapour) not pass through this fixed knot along axial direction.Sufficiently long middle sleeve 8 makes working pipe dissipate by the heat that end-plate 4 spreads out of on the way, makes the heat enough little (long excellent heat transfer theory) of passing to outer steel pipe by end-plate 9, guarantees that the steel sleeve tube-surface is not overheated.The utility model is provided with humidity discharging pipe 3 and humidity discharging pipe 10, can make that moisture drains into atmosphere in the thermal insulation layer.When outer sleeve leakage or working pipe leakage, steam or steam are emerged by the humidity discharging pipe, can be convenient to find rapidly the fault point according to emitting stripping temperature and emitting steam pipe position judgment nature of trouble and region; So humidity discharging pipe 3 and 10 is again with the function of signal tube.The bootable technician of the utility model finds the fault point rapidly and destruction is limited in the little scope of trying one's best.
Description of drawings
Accompanying drawing is the utility model structural representation.
1 working pipe, 2 outer steel pipes, 3 humidity discharging pipes, 4 end-plates, 5 ring flat-plates, 6 clamps, 7 clamps, 8 middle sleeves, 9 end-plates, 10 humidity discharging pipes, 11 thermal insulating materials.
Embodiment
Subregion partition-type Internally fixed node, middle sleeve 8 is between working pipe 1 and outer steel pipe 2; Clamp 6, clamp 7 are formed a cover clamp, many cover clamps are arranged, along circumferentially evenly arranging; Clamp has groove, and two clamps are oppositely arranged the both sides that are positioned at middle sleeve 8 tube walls, and clamp 6 is fixedly connected on the inwall of outer steel pipe 2, and clamp 7 is fixedly connected on the outer wall of working pipe 1; Ring flat-plate 5 is stuck on the groove of two clamps, and ring flat-plate 5 does not contact with working pipe 1 with steel sleeve pipe 2; End-plate 4 is sealedly and fixedly connected with middle sleeve 8 one ends, is sealedly and fixedly connected with working pipe 1 outer wall simultaneously; End-plate 9 is sealedly and fixedly connected with middle sleeve 8 the other ends, fixedlys connected with outer steel pipe 2 inner wall sealings simultaneously; On the position of outer steel pipe 2, have humidity discharging pipe 3, humidity discharging pipe 10 with respect to middle sleeve 8 two ends.Filled heat insulating material in filled heat insulating material, the middle sleeve 8 between working pipe 1 and middle sleeve 8 and between middle sleeve 8 and the outer steel pipe 2.End-plate is ring-like.
Claims (2)
1, a kind of subregion partition-type Internally fixed node includes working pipe (1), outer steel pipe (2), thermal insulating material (11); It is characterized in that middle sleeve (8) is positioned between working pipe (1) and the outer steel pipe (2); Clamp (6), clamp (7) are formed a cover clamp, have a cover clamp at least; Clamp has groove, and two clamps are oppositely arranged the both sides that are positioned at middle sleeve (8) tube wall, and clamp (6) is fixedly connected on the inwall of outer steel pipe (2), and clamp (7) is fixedly connected on the outer wall of working pipe (1); Ring flat-plate (5) is stuck on the groove of two clamps, and ring flat-plate does not contact with working pipe with the steel sleeve pipe; End-plate (4) is sealedly and fixedly connected with middle sleeve one end, is sealedly and fixedly connected with the working pipe outer wall simultaneously; End-plate (9) is sealedly and fixedly connected with the middle sleeve the other end, fixedlys connected with the outer steel pipe inner wall sealing simultaneously; On the position of outer steel pipe 2, have humidity discharging pipe (3), humidity discharging pipe (10) with respect to middle sleeve 8 two ends; At filled heat insulating material (11) between working pipe and the middle sleeve and between middle sleeve and the outer steel pipe.
2,, it is characterized in that in middle sleeve (8) and outside filled heat insulating material according to the described subregion partition-type of claim 1 Internally fixed node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260186 CN2570590Y (en) | 2002-09-23 | 2002-09-23 | Sectional-partition type internal-fixing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260186 CN2570590Y (en) | 2002-09-23 | 2002-09-23 | Sectional-partition type internal-fixing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570590Y true CN2570590Y (en) | 2003-09-03 |
Family
ID=33727300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260186 Expired - Fee Related CN2570590Y (en) | 2002-09-23 | 2002-09-23 | Sectional-partition type internal-fixing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570590Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886933A (en) * | 2019-12-13 | 2020-03-17 | 上海科华热力管道有限公司 | On-line anticorrosion structure of directly-buried steam heat-preservation pipeline outer sleeve steel pipe and construction method thereof |
-
2002
- 2002-09-23 CN CN 02260186 patent/CN2570590Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886933A (en) * | 2019-12-13 | 2020-03-17 | 上海科华热力管道有限公司 | On-line anticorrosion structure of directly-buried steam heat-preservation pipeline outer sleeve steel pipe and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |