CN203770870U - Cold-insulation cryogenic liquid pipeline - Google Patents
Cold-insulation cryogenic liquid pipeline Download PDFInfo
- Publication number
- CN203770870U CN203770870U CN201420130235.8U CN201420130235U CN203770870U CN 203770870 U CN203770870 U CN 203770870U CN 201420130235 U CN201420130235 U CN 201420130235U CN 203770870 U CN203770870 U CN 203770870U
- Authority
- CN
- China
- Prior art keywords
- outer tube
- low
- cold insulation
- temperature liquid
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 239000004576 sand Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000012774 insulation material Substances 0.000 abstract 1
- 229910001562 pearlite Inorganic materials 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011494 foam glass Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Pipeline Systems (AREA)
Abstract
The utility model relates to a cold-insulation cryogenic liquid pipeline. The cold-insulation cryogenic liquid pipeline comprises an inner pipe made of stainless steel and an outer pipe made of steel plate, the inner pipe is arranged in the outer pipe, and a space between the outer wall of the inner pipe and the inner wall of the outer pipe is filled with pearlite serving as a heat insulation material. The cold-insulation cryogenic liquid pipeline has the advantages that loss of refrigeration capacity of the cryogenic liquid pipeline can be effectively reduced, investment is saved while energy consumption is reduced, and safety and reliability in operation of the pipeline are guaranteed.
Description
Technical field
The utility model relates to low-temperature liquid pipe, espespecially a kind of low-temperature liquid pipe of cold insulation.
Background technique
In the oxygen making station of iron and steel enterprise or some Chemical Manufacture flow process, often need the cryogenic liquide product storage of production some in low-temperature liquid storage tank, for production technology, for subsequent use or confession export trade.The cryogenic liquide producing from air separation plant, enters in low-temperature liquid storage tank by low-temperature liquid pipe, in the process of carrying at fluid pipeline, inevitably produces a large amount of cold consumption.For the cold insulation measure of low-temperature liquid pipe, be not only production technology institute necessary, increase especially labourer's safety, reduce the energy consumption of unit product, save the important channel of energy consumption.At present, adopt in two ways traditionally external application cold insulation layer or employing vacuum tube for the cold insulation of cryogenic piping.The mode of external application cold insulation layer is constructed simply, easy to maintenance, but cold insulation poor effect, and loss of refrigeration capacity is serious; Although the mode cold insulation that adopts vacuum tube to carry is effective, vacuum tube investment is too high, and difficulty is installed, if there is bursting accident when use, safeguards that transformation is also very difficult.
Summary of the invention
For solving the problems of the technologies described above, main purpose of the present utility model is to provide a kind of low-temperature liquid pipe of cold insulation, can effectively reduce low-temperature liquid pipe loss of refrigeration capacity, when saving energy consumption, reduces investment outlay, and ensures pipe safety reliable operation.
For reaching above-mentioned purpose, the right technological scheme of the utility model is: a kind of low-temperature liquid pipe of cold insulation, comprises inner tube, outer tube; Inner tube is stainless steel pipeline, and outer tube is made up of steel plate; Inner tube is established within the outer tube, between outer wall of inner tube and outer tube wall, fills pearlife as thermoinsulation material.
One of the utility model preferred version, outer tube upper end is provided with sand loading hole, and described outer tube lower end is provided with unloads sand hole.
One of the utility model preferred version, outer tube is provided with nitrogen charging device, can be filled with nitrogen to outer tube inside by nitrogen charging device.
Further, outer tube is provided with safety valve, and in outer tube, nitrogen exceedes setup pressure value, and nitrogen is discharged outer tube by safety valve.
All right, in outer tube, establish interior pipe holder, inner tube is fixed on interior pipe holder, between inner tube and interior pipe holder, separates with thermoinsulation material.
The utility model compared with prior art, its useful effect is: with pipeline external application cold insulation layer ratio, heat insulation layer material adopts pearlife, there is thermal conductivity low, density little (amount of deflection, the increase span that reduce pipeline, reduce the investment of pipe support), water absorption rate is low, heat resistance, expansibility and moisture proofness, the advantage that chemical stability is good; Protective layer adopts metallic conduit (as roll of steel plate welded tube), has service time long, and mechanical strength is high, and vibration resistance is simple in structure, increases pipe-line spans, reduces the advantage of pipe support investment; Outer tube arranges nitrogen and is filled with pipeline, in pearlife, passes into micro positive pressure drying nitrogen, can effectively prevent that making moist of pearlife heat insulation layer is icing, ensures the safe and reliable operation of pipeline; Outer tube arranges a safety valve every a segment distance, once can prevent inner tube breakage, when leak of liquid gasification, manifold pressure is too high; On outer tube, offer sand loading hole and unload sand hole, being convenient to filling of pipe-line maintenance and pearlife; The metal " cold bridge " forming between inner tube and interior pipe holder and outer tube is one of main path of loss of refrigeration capacity, this structure adopts thermoinsulation material (as foam glass brick) that inner tube and interior pipe holder are separated, angle steel point of contact simultaneously between pipe holder and outer tube adopts acute angle form, effectively cut off " cold bridge ", reduced loss of refrigeration capacity.
The low-temperature liquid pipe of the utility model cold insulation, the cold insulation can realize low-temperature liquid pipe and normally work time, has that cold insulation is effective, pipe-line spans large, vibration resistance, simple in structure, easy construction, economical and practical, a safe and reliable feature.
Brief description of the drawings
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, outer tube 1 is φ 529 roll of steel plate welded tubes, and interior pipe holder 3 is 10# channel-section steel, and the end of interior pipe holder 3 and outer tube 1 contacting point adopt acute angle, to reduce the area of heat transfer path; Inner tube 4 has three to be arranged in outer tube 1, and inner tube 4 is φ 32 stainless steel pipeline, and inner tube 4 use stainless steel pipe collars 5 are fixed on interior pipe holder 3, between inner tube 4 and stainless steel pipe collar 5, adopt foam glass brick 6 to separate; Filling pearlife 2 between outer tube 1 and inner tube 4;
Every a segment distance, be provided with the sand loading hole of DN300 in outer tube 1 upper end, outer tube 1 lower end is provided with the sand hole that unloads of DN300, and inserts pearlife 2 by sand loading hole, by unloading sand hole, pearlife 2 is discharged; On outer tube 1, be provided with nitrogen charging device, can be filled with to outer tube 1 inside micro-positive drying nitrogen by nitrogen charging device; On outer tube 1, be provided with safety valve, the interior nitrogen of outer tube 1 exceedes setup pressure value, and nitrogen is discharged outer tube 1 by safety valve, once can prevent inner tube 4 breakages, when leak of liquid gasification, outer tube 1 internal pressure is too high, ensures the use safety of outer tube 1;
The outer Secondary Anticorrosion of outer tube 1 and colour code are determined according to requirements.
The above embodiment is only the preferred embodiment for absolutely proving that the utility model is lifted, and protection domain of the present utility model is not limited to this.What those skilled in the art did on the utility model basis is equal to alternative or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (5)
1. a low-temperature liquid pipe for cold insulation, is characterized in that: described pipeline comprises inner tube (4), outer tube (1); Described inner tube (4) is stainless steel pipeline, and described outer tube (1) is made up of steel plate; Described inner tube (4) is located in outer tube (1), between inner tube (4) outer wall and outer tube (1) inwall, fills pearlife (2) as thermoinsulation material.
2. the low-temperature liquid pipe of a kind of cold insulation as claimed in claim 1, is characterized in that: described outer tube (1) upper end is provided with sand loading hole, and described outer tube (1) lower end is provided with unloads sand hole.
3. the low-temperature liquid pipe of a kind of cold insulation as claimed in claim 1, is characterized in that: described outer tube (1) is provided with nitrogen charging device, can be filled with nitrogen to outer tube (1) inside by nitrogen charging device.
4. the low-temperature liquid pipe of a kind of cold insulation as claimed in claim 3, is characterized in that: described outer tube (1) is provided with safety valve, and the interior nitrogen of outer tube (1) exceedes setup pressure value, and nitrogen is discharged outer tube (1) by safety valve.
5. a kind of low-temperature liquid pipe of cold insulation as described in one of claim 1-4, it is characterized in that: in described outer tube (1), establish interior pipe holder (3), it is upper that inner tube (4) is fixed on interior pipe holder (3), between inner tube (4) and interior pipe holder (3), separates with thermoinsulation material (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420130235.8U CN203770870U (en) | 2014-01-14 | 2014-03-21 | Cold-insulation cryogenic liquid pipeline |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018967 | 2014-01-14 | ||
| CN201420018967.8 | 2014-01-14 | ||
| CN201420130235.8U CN203770870U (en) | 2014-01-14 | 2014-03-21 | Cold-insulation cryogenic liquid pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770870U true CN203770870U (en) | 2014-08-13 |
Family
ID=51288061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420130235.8U Expired - Lifetime CN203770870U (en) | 2014-01-14 | 2014-03-21 | Cold-insulation cryogenic liquid pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458208A (en) * | 2018-05-24 | 2018-08-28 | 浙江智海化工设备工程有限公司 | A kind of jacketed pipe attemperator of cryogenic liquid |
-
2014
- 2014-03-21 CN CN201420130235.8U patent/CN203770870U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458208A (en) * | 2018-05-24 | 2018-08-28 | 浙江智海化工设备工程有限公司 | A kind of jacketed pipe attemperator of cryogenic liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |