CN104790957A - Liquid nitrogen freezing device - Google Patents
Liquid nitrogen freezing device Download PDFInfo
- Publication number
- CN104790957A CN104790957A CN201510236059.5A CN201510236059A CN104790957A CN 104790957 A CN104790957 A CN 104790957A CN 201510236059 A CN201510236059 A CN 201510236059A CN 104790957 A CN104790957 A CN 104790957A
- Authority
- CN
- China
- Prior art keywords
- freezing
- liquid nitrogen
- pipe
- dividing plate
- fixed
- 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.)
- Pending
Links
- 230000008014 freezing Effects 0.000 title claims abstract description 47
- 238000007710 freezing Methods 0.000 title claims abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 21
- 239000002689 soil Substances 0.000 description 10
- 239000012267 brine Substances 0.000 description 6
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
- E21D1/12—Preparation of the ground by freezing
- E21D1/14—Freezing apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Abstract
The invention relates to a liquid nitrogen freezing device. A fixing conical cap is sealed to the bottom of a freezing pipe, a separator which is in clearance fit with the freezing pipe is arranged at the upper end inside the freezing pipe, a fluid-feeding pipe penetrates through the separator and stenches into the inner bottom of the freezing pipe, the fluid-feeding pipe is fixed with the separator, and an exhaust pipe is fixed in a through hole in the separator. The liquid nitrogen freezing device has the advantages that the structure is simple, the distribution of liquid nitrogen is uniform, and the freezing effect is good.
Description
Technical field
The invention belongs to inclined shaft freezing field, particularly a kind of liquid nitrogen freezing device.
Background technology
At present, the method for inclined shaft freezing many employings brine freezing.And brine freezing system complex, equipment is many, and freezing speed is slow.
Summary of the invention
In order to overcome the shortcoming of prior art, the invention provides a kind of liquid nitrogen freezing device.Its structure is simple, and liquid nitrogen is evenly distributed, and freezing efficiency is good.
The present invention solves the technical scheme that its technical problem takes: the sealed bottom fixed cone cap of freezing pipe, there is the dividing plate with freezing pipe matched in clearance the interior upper end of freezing pipe, feed pipe stretches into the inner bottom part of freezing pipe through dividing plate, feed pipe and dividing plate are fixed, and the through hole of stack on dividing plate is fixed.
The present invention has following advantages: (1), soil layer liquid nitrogen freezing system are simple, uses equipment few.The cold freezing soil layer need not be produced by special freezing equipment, but replaces with Dewar type container or liquid nitrogen storage groove tank.Liquid nitrogen freezing storage facilities is simple, light, and transport is installed easily.Therefore, simplify frozen tissue work greatly to shorten and freeze time and reduce freezing cost.(2), direct boiling is without refrigerant.Liquid nitrogen freezing is that directly logical liquid nitrogen vaporization is freezed in freezing pipe, without refrigerant agent (salt solution), without brine pump, eliminates refrigerant agent loss of refrigeration capacity.And when freezing pipe seepage liquid nitrogen contact frozen soil, brine freezing can not be resembled and melt frozen soil.(3), have that freezing speed is fast, temperature is low and frozen soil strength high, liquid nitrogen volatilization temperature is-196 degree, solidification point is very low, so frost wall development speed is very fast at this temperature, show according to foreign data, the frozen soil development speed of liquid nitrogen freezing is 8 ~ 10 times of common brine freezing frozen soil development speed, and frost wall average temperature is low simultaneously, and frost wall intensity is large.And the flexible form of the consolidation by freezing soil body (4), the scale of freezing can be determined according to the actual conditions of engineering, at any time can the intensity of manual control soil mass consolidation, and work is convenient.(5), liquid nitrogen is a kind of explosion-proof and fireproof cold-producing medium, and itself is non-toxic, and pollution-free to surrounding environment, without engine noise between freezing period.(6), the frost-heaving and thawing of the soil body is far smaller than common brine freezing simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this present invention is further illustrated.
Fig. 1 is sectional view of the present invention.
Detailed description of the invention
As shown in Figure 1, the sealed bottom fixed cone cap 7 of freezing pipe 2, there is the dividing plate 3 with freezing pipe 2 matched in clearance the interior upper end of freezing pipe 2, and feed pipe 4 stretches into the inner bottom part of freezing pipe 2 through dividing plate 3, feed pipe 4 is fixed with dividing plate 3, and through hole 4 place of stack 1 on dividing plate 3 is fixed.
Described feed pipe 4 bottom end socket, the sidewall of feed pipe 4 bottom is evenly equipped with outage 6.Liquid nitrogen can only be sprayed from outage 6, liquid nitrogen is more evenly distributed.
Claims (2)
1. a liquid nitrogen freezing device, it is characterized in that: the sealed bottom fixed cone cap (7) of freezing pipe (2), there is the dividing plate (3) with freezing pipe (2) matched in clearance the interior upper end of freezing pipe (2), feed pipe (4) stretches into the inner bottom part of freezing pipe (2) through dividing plate (3), feed pipe (4) is fixed with dividing plate (3), and through hole (4) place of stack (1) on dividing plate (3) is fixed.
2. liquid nitrogen freezing device according to claim 1, is characterized in that: described feed pipe (4) bottom end socket, the sidewall of feed pipe (4) bottom is evenly equipped with outage (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236059.5A CN104790957A (en) | 2015-05-11 | 2015-05-11 | Liquid nitrogen freezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236059.5A CN104790957A (en) | 2015-05-11 | 2015-05-11 | Liquid nitrogen freezing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790957A true CN104790957A (en) | 2015-07-22 |
Family
ID=53556092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510236059.5A Pending CN104790957A (en) | 2015-05-11 | 2015-05-11 | Liquid nitrogen freezing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790957A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756680A (en) * | 2016-01-06 | 2016-07-13 | 中国矿业大学 | Feed pipe for inclined hole freezing and using method |
| 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 |
| CN112594556A (en) * | 2020-12-11 | 2021-04-02 | 郑州铁路职业技术学院 | Method for treating leakage of pipeline in soft soil layer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2627061Y (en) * | 2003-06-20 | 2004-07-21 | 中国矿业大学 | Liquid nitrogen partial freezing equipment |
| CN201037722Y (en) * | 2007-03-06 | 2008-03-19 | 中国矿业大学 | Liquid nitrogen pipe even freezing apparatus |
| CN102619213A (en) * | 2012-02-16 | 2012-08-01 | 中国矿业大学(北京) | Freezing apparatus with double circulating systems |
| CN102979083A (en) * | 2012-11-08 | 2013-03-20 | 沈阳信达信息科技有限公司 | Liquid nitrogen freezing device |
| CN204691773U (en) * | 2015-05-11 | 2015-10-07 | 中煤邯郸特殊凿井有限公司 | A kind of liquid nitrogen freezing device |
-
2015
- 2015-05-11 CN CN201510236059.5A patent/CN104790957A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2627061Y (en) * | 2003-06-20 | 2004-07-21 | 中国矿业大学 | Liquid nitrogen partial freezing equipment |
| CN201037722Y (en) * | 2007-03-06 | 2008-03-19 | 中国矿业大学 | Liquid nitrogen pipe even freezing apparatus |
| CN102619213A (en) * | 2012-02-16 | 2012-08-01 | 中国矿业大学(北京) | Freezing apparatus with double circulating systems |
| CN102979083A (en) * | 2012-11-08 | 2013-03-20 | 沈阳信达信息科技有限公司 | Liquid nitrogen freezing device |
| CN204691773U (en) * | 2015-05-11 | 2015-10-07 | 中煤邯郸特殊凿井有限公司 | A kind of liquid nitrogen freezing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756680A (en) * | 2016-01-06 | 2016-07-13 | 中国矿业大学 | Feed pipe for inclined hole freezing and using method |
| 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 |
| CN112594556A (en) * | 2020-12-11 | 2021-04-02 | 郑州铁路职业技术学院 | Method for treating leakage of pipeline in soft soil layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104790957A (en) | Liquid nitrogen freezing device | |
| CN204691773U (en) | A kind of liquid nitrogen freezing device | |
| CN103411370A (en) | Water drainage structure of refrigerating chamber of refrigerator | |
| CN203964431U (en) | A kind of carbon dioxide refrigeration apparatus structure | |
| CN101514859B (en) | Multifunctional refrigerating and quick freezing integrated storeroom | |
| CN102979083A (en) | Liquid nitrogen freezing device | |
| CN204473525U (en) | One is special freezes tank | |
| CN103334985A (en) | Hydraulic oil cooling oil tank | |
| CN203964428U (en) | A kind of carbon dioxide refrigeration apparatus structure | |
| CN202989904U (en) | Liquid nitrogen freezer | |
| CN208720601U (en) | A kind of aluminum steel compound heat conduction tube | |
| CN208901751U (en) | A kind of freeze-drying apparatus | |
| CN206648354U (en) | A kind of snow ice maker evaporator of highly effective refrigeration | |
| CN204084998U (en) | A kind of mine escape capsule refrigeration system ice-reserving cabinet | |
| CN204154052U (en) | Solar wind-energy refrigerating system | |
| CN202928251U (en) | Chilled water system of refrigerator | |
| CN103471193B (en) | A kind of novel energy-conserving ice-reserving refrigerating plant | |
| CN201637217U (en) | Ice-temperature and quick-frozen integral warehouse | |
| CN202393129U (en) | Storage-arranged barrel pump refrigerating unit structure | |
| CN205425556U (en) | Absorption formula car as a house refrigerator liquid feeding device | |
| CN204630224U (en) | A kind of cold storage refrigerating system structure | |
| CN204757469U (en) | Snowflake machine evaporimeter | |
| CN203557936U (en) | Low temperature cold article structure | |
| CN203432011U (en) | Low temperature water taking and ice melting system | |
| CN204027054U (en) | A kind of handpiece Water Chilling Units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |
|
| RJ01 | Rejection of invention patent application after publication |