CN2627061Y - Liquid nitrogen partial freezing equipment - Google Patents
Liquid nitrogen partial freezing equipment Download PDFInfo
- Publication number
- CN2627061Y CN2627061Y CN 03259143 CN03259143U CN2627061Y CN 2627061 Y CN2627061 Y CN 2627061Y CN 03259143 CN03259143 CN 03259143 CN 03259143 U CN03259143 U CN 03259143U CN 2627061 Y CN2627061 Y CN 2627061Y
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- pipe
- dividing plate
- central dividing
- feed pipe
- 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 - Fee Related
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 22
- 238000007710 freezing Methods 0.000 title claims abstract description 21
- 230000008014 freezing Effects 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 10
- 229920002635 polyurethane Polymers 0.000 claims abstract description 5
- 239000004814 polyurethane Substances 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 229910001562 pearlite Inorganic materials 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 7
- 238000000638 solvent extraction Methods 0.000 abstract 3
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000005187 foaming Methods 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 abstract 1
- 235000019362 perlite Nutrition 0.000 abstract 1
- 239000010451 perlite Substances 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Abstract
A liquid nitrogen local freezer is provided, which is most suitable for quick freezing in geotechnical engineering. A long and short liquid feeding pipes and an air outlet pipe are equipped in a seamless steel pipe, a middle partitioning plate is equipped in the middle of the freezer, the liquid feeding pipes and air outlet pipe are respectively passed through the middle partitioning plate and fixed, and perlite thermal insulation material and polyurethane foaming material are filled in the space between the middle portioning plate and upper partitioning plate. The evaporation of liquid nitrogen in the special freezer will carry away a large amount of heat in the soil layer at the periphery of the freezer, so that the local soil layer can be quickly frozen. The utility model has the advantages of high freezing speed, saved refrigerant consumption, reduced cost, long service life, and broad practicability.
Description
One, technical field
The utility model relates to liquid nitrogen partial freezing device, is particularly useful for the quick freezing of geotechnical engineering.
Two, background technology
Freezing process is to utilize the artificial cooling technology; water in the stratum is freezed, natural ground is become frozen soil, increase its intensity and stability; isolated underground water is got in touch with underground construction, so that carry out pit shaft or underground construction is dug the special construction technology of constructing of building under the protection of frost wall.Its essence is and utilize artificial cooling Iterim Change rock and soil properties with consolidating stratum, in the stratum that needs freeze, accomplish fluently boring in advance, in boring, put into special-purpose frigo, existing frigo is simple in structure, though can realize the requirement of frozen soil, but on engineering, can not accomplish partial freezing, thereby not only power consumption is high, and has increased the construction volume of engineering.
Three, technology contents
1. goal of the invention
In view of the deficiency that prior art exists, it is low that the purpose of this utility model provides a kind of power consumption, the liquid nitrogen partial freezing device that cost is low.
2. technical scheme
The utility model liquid nitrogen partial freezing device, it comprises seamless steel pipe, be located at feed pipe and escape pipe in the seamless steel pipe, the feed pipe that is provided with in the seamless steel pipe is longer than escape pipe, the middle part of seamless steel pipe is provided with central dividing plate, top is provided with upper spacer, the bottom is provided with the bottom shrouding, feed pipe and escape pipe pass central dividing plate respectively, the end of feed pipe is apart from one section height of bottom shrouding h, central dividing plate is to being filled with heat insulating pearlite material and polyurethane foam material between the upper spacer, top shrouding and frigo steel pipe, feed pipe and escape pipe are welded as a whole.
The utility model liquid nitrogen partial freezing device, the diameter of described central dividing plate is less than the diameter of seamless steel pipe, guarantee that it can move freely in frigo, the feed pipe end apart from the height H of bottom shrouding greater than 400mm, and be provided with a reinforcing bar long apart from the bottom shrouding and do support, be beneficial to that liquid nitrogen flows out and the exit is difficult for stopping up.It is fixing to pass the welding of the feed pipe of central dividing plate and escape pipe and central dividing plate respectively, and the polyurethane expanded material height L3 section that central dividing plate is upwards filled is 200mm～500mm.
3. technique effect
The utility model liquid nitrogen partial freezing device, be best suited for the quick freezing of geotechnical engineering, length feed pipe and escape pipe are set in seamless steel pipe, its middle part is provided with central dividing plate, feed pipe and escape pipe pass central dividing plate and fixing respectively, central dividing plate is to being filled with the polyurethane foam heat insulating material between the upper spacer, use liquid nitrogen in the frigo of special use, to evaporate, take away the heat in the soil layer around the frigo in a large number, make local soil layer freeze rapidly, its freezing speed is fast, save cold, reduce cost, high life has practicality widely.
Four, description of drawings
Accompanying drawing is the utility model schematic diagram.
Five, the specific embodiment
The utility model will be further described below in conjunction with an embodiment in the accompanying drawing:
The utility model liquid nitrogen partial freezing device, as shown in Figure 1, whole frigo is seamless steel pipe 1 (or stainless steel tube), inner 2 fine steel tubes (material is similarly steel or stainless steel) of placing that one is long and the other is short, long tube is a feed pipe 6, liquid nitrogen from then on pipe enters up to the bottom; Short tube is an escape pipe 2, liquid nitrogen pipe discharge from then on after becoming gas or gas liquid mixture after the gasification of bottom.This frigo structure can be divided into four parts: L1, L2, L3 and L4, and L1 partly is a base cone, is bottom shrouding 4 in the middle of base cone and the L2 part, and base cone can weld separately, also can partly be made of one with L2; L2 partly is the frigo main body, and the scope that it highly freezes for actual requirement of engineering has feed pipe 6 therein, and certain distance h is left far from bottom shrouding 4 in the bottom of feed pipe 6, generally greater than 400mm, flows out and the difficult obstruction in exit in order to liquid nitrogen; L3 partly is the central dividing plate 3 and the hermetic unit of frigo, the central dividing plate 3 upwards height L3 section of filled polyurethane expanded material 9 is 200mm～500mm, the diameter of central dividing plate 3 is littler than the interior diameter of frigo steel pipe 1, guarantee that it can move freely in frigo, it and feed pipe 6 and escape pipe 2 welding are fixing, when feed pipe 6 feeds liquid nitrogen very big shrinkage strain can take place like this, central dividing plate will upwards compress polyurethane, and can not cause the fracture of feed pipe 6; L4 partly is the spreading of frigo, highly for actual engineering face down and do not need the scope freezed, in the annular space of frigo internal diameter and feed pipe 6 and escape pipe 2, fill heat insulating pearlite material 8 until the top shrouding, to reduce loss of refrigeration capacity, top shrouding 7 and frigo steel pipe 1, feed pipe 6 and escape pipe 2 are welded as a whole.
Claims (6)
1. liquid nitrogen partial freezing device, it comprises seamless steel pipe (1), be located at interior feed pipe of seamless steel pipe (1) (6) and escape pipe (2), it is characterized in that: the feed pipe (6) that is provided with in the seamless steel pipe (1) is longer than escape pipe (2), the middle part of seamless steel pipe (1) is provided with central dividing plate (3), top is provided with upper spacer (7), the bottom is provided with bottom shrouding (4), feed pipe (6) and escape pipe (2) pass central dividing plate (3) respectively, the end of feed pipe (6) is apart from (4) one sections height of bottom shrouding h, central dividing plate (3) is to being filled with heat insulating pearlite material (8) and polyurethane foam material (9) between the upper spacer (7), top shrouding (7) and frigo steel pipe (1), feed pipe (6) and escape pipe (2) are welded as a whole.。
2. liquid nitrogen according to claim 1 partial freezing device, it is characterized in that: the diameter of described central dividing plate (3) is less than the diameter of seamless steel pipe (1).
3. liquid nitrogen according to claim 1 partial freezing device is characterized in that: described feed pipe (6) end apart from the height H of bottom shrouding (4) greater than 400mm.
4. according to claim 1 or 3 described liquid nitrogen partial freezing devices, it is characterized in that: described feed pipe (6) end is provided with a reinforcing bar (5) long apart from bottom shrouding (4).
5. according to claim 1,2 or 3 described liquid nitrogen partial freezing devices, it is characterized in that: described feed pipe (6) and the escape pipe (2) that passes central dividing plate (3) respectively is fixing with central dividing plate (3) welding.
6. liquid nitrogen according to claim 1 and 2 partial freezing device is characterized in that: polyurethane expanded material (9) the height L3 section that described central dividing plate (3) is upwards filled is 200mm～500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259143 CN2627061Y (en) | 2003-06-20 | 2003-06-20 | Liquid nitrogen partial freezing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259143 CN2627061Y (en) | 2003-06-20 | 2003-06-20 | Liquid nitrogen partial freezing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2627061Y true CN2627061Y (en) | 2004-07-21 |
Family
ID=34254751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03259143 Expired - Fee Related CN2627061Y (en) | 2003-06-20 | 2003-06-20 | Liquid nitrogen partial freezing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2627061Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806058A (en) * | 2010-03-04 | 2010-08-18 | 中国科学院寒区旱区环境与工程研究所 | Freezing plate for cooling soil body and temperature control system |
| CN101775796B (en) * | 2009-11-30 | 2011-03-16 | 北京中煤矿山工程有限公司 | Unplugging-free freezer |
| CN102619213A (en) * | 2012-02-16 | 2012-08-01 | 中国矿业大学(北京) | Freezing apparatus with double circulating systems |
| CN101787692B (en) * | 2010-01-14 | 2012-08-29 | 中铁西北科学研究院有限公司 | Method for maintaining thermal stability of permafrost foundation and complete solar refrigeration device |
| CN101696572B (en) * | 2009-09-27 | 2012-09-05 | 北京中煤矿山工程有限公司 | Freezer with gas guide structure |
| CN103485327A (en) * | 2013-06-30 | 2014-01-01 | 中国矿业大学 | Filming liquid nitrogen freezing device |
| CN104790957A (en) * | 2015-05-11 | 2015-07-22 | 中煤邯郸特殊凿井有限公司 | Liquid nitrogen freezing device |
| CN104653185B (en) * | 2015-01-27 | 2016-06-29 | 中国矿业大学 | One freezes the adjustable frigo of segment length and freezing method thereof |
| CN106014418A (en) * | 2016-05-24 | 2016-10-12 | 陕西联盛机电工程有限公司 | Quick self-flowing and energy-saving mine freezing structure and method |
| CN106351677A (en) * | 2016-11-18 | 2017-01-25 | 北京城建集团有限责任公司 | Underground water step-freezing method for deeply-buried tunnel station construction in water rich sand cobble stratum |
| CN106894819A (en) * | 2017-04-07 | 2017-06-27 | 淄博王煤矿业有限公司 | Vertical shaft difference freezing plant |
| CN107916682A (en) * | 2016-04-30 | 2018-04-17 | 叶香竹 | Protection municipal pipeline freezes to construct |
| CN109826181A (en) * | 2019-01-30 | 2019-05-31 | 中国矿业大学 | A kind of liquid nitrogen freezer and method of the liquid supply pipe with partition |
| CN111773761A (en) * | 2020-07-13 | 2020-10-16 | 新兴能源装备股份有限公司 | Auxiliary lifting device of pressure container evacuation equipment |
-
2003
- 2003-06-20 CN CN 03259143 patent/CN2627061Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696572B (en) * | 2009-09-27 | 2012-09-05 | 北京中煤矿山工程有限公司 | Freezer with gas guide structure |
| CN101775796B (en) * | 2009-11-30 | 2011-03-16 | 北京中煤矿山工程有限公司 | Unplugging-free freezer |
| CN101787692B (en) * | 2010-01-14 | 2012-08-29 | 中铁西北科学研究院有限公司 | Method for maintaining thermal stability of permafrost foundation and complete solar refrigeration device |
| CN101806058A (en) * | 2010-03-04 | 2010-08-18 | 中国科学院寒区旱区环境与工程研究所 | Freezing plate for cooling soil body and temperature control system |
| CN102619213B (en) * | 2012-02-16 | 2014-07-30 | 中国矿业大学(北京) | Freezing apparatus with double circulating systems |
| CN102619213A (en) * | 2012-02-16 | 2012-08-01 | 中国矿业大学(北京) | Freezing apparatus with double circulating systems |
| CN103485327B (en) * | 2013-06-30 | 2015-11-11 | 中国矿业大学 | A kind of film covering type liquid nitrogen freezing device |
| CN103485327A (en) * | 2013-06-30 | 2014-01-01 | 中国矿业大学 | Filming liquid nitrogen freezing device |
| CN104653185B (en) * | 2015-01-27 | 2016-06-29 | 中国矿业大学 | One freezes the adjustable frigo of segment length and freezing method thereof |
| CN104790957A (en) * | 2015-05-11 | 2015-07-22 | 中煤邯郸特殊凿井有限公司 | Liquid nitrogen freezing device |
| CN107916682A (en) * | 2016-04-30 | 2018-04-17 | 叶香竹 | Protection municipal pipeline freezes to construct |
| CN107938648A (en) * | 2016-04-30 | 2018-04-20 | 叶香竹 | Protection Municipal pipeline freezes to construct |
| CN107964938A (en) * | 2016-04-30 | 2018-04-27 | 叶香竹 | Protect the frozen construction technology of municipal pipeline |
| CN106014418A (en) * | 2016-05-24 | 2016-10-12 | 陕西联盛机电工程有限公司 | Quick self-flowing and energy-saving mine freezing structure and method |
| CN106014418B (en) * | 2016-05-24 | 2019-08-16 | 西安联盛能源科技有限公司 | A kind of gravity flow energy saving quickly mine frozen structure and freezing method |
| CN106351677A (en) * | 2016-11-18 | 2017-01-25 | 北京城建集团有限责任公司 | Underground water step-freezing method for deeply-buried tunnel station construction in water rich sand cobble stratum |
| CN106894819A (en) * | 2017-04-07 | 2017-06-27 | 淄博王煤矿业有限公司 | Vertical shaft difference freezing plant |
| CN109826181A (en) * | 2019-01-30 | 2019-05-31 | 中国矿业大学 | A kind of liquid nitrogen freezer and method of the liquid supply pipe with partition |
| CN111773761A (en) * | 2020-07-13 | 2020-10-16 | 新兴能源装备股份有限公司 | Auxiliary lifting device of pressure container evacuation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040721 |