CN102563777A - System for collecting cold energy of liquefied natural gas in drilling team - Google Patents
System for collecting cold energy of liquefied natural gas in drilling team Download PDFInfo
- Publication number
- CN102563777A CN102563777A CN2010106242082A CN201010624208A CN102563777A CN 102563777 A CN102563777 A CN 102563777A CN 2010106242082 A CN2010106242082 A CN 2010106242082A CN 201010624208 A CN201010624208 A CN 201010624208A CN 102563777 A CN102563777 A CN 102563777A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- pipeline
- natural gas
- heat exchange
- cold energy
- 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
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a system for collecting cold energy of liquefied natural gas in a drilling team, which belongs to the technical field of energy conservation. The system comprises a heat exchange/cold storage box, wherein the heat exchange/cold storage box comprises a shell; the shell is internally provided with a refrigerant, and is provided with a first heat exchanger and a second heat exchanger; one end of the first heat exchanger is connected with a liquefied natural gas tank outside the heat exchange/cold storage box by a pipeline, and the other end of the first heat exchanger is connected with a power machine by a pipeline; and one end of the second heat exchanger is connected with a fan outside the heat exchange/cold storage box by a pipeline, and the other end of the second heat exchanger is connected with a user side by a pipeline. The system has the advantages that the cold energy needed by the petroleum drilling team is met by collecting, storing and releasing the cold energy released in the vaporization process of low-temperature LNG (liquefied natural gas), so that the energy is greatly saved.
Description
Technical field
The present invention relates to field of energy-saving technology, particularly the liquified natural gas cold energy is collected and is applied to the system that utilizes of oil drilling team.
Background technology
If according to the moderately well-off country in present world primary energy consumption criterion calculation per capita, the energy demand total amount of China will reach 57% of present whole world energy demand total amount, be 5.5 times of present China energy consumption total amount.These numerals show that energy shortage will become the bottleneck and one of key factor that threatens China's economic security of the economic development of restriction China.For energy shortage and serious, find that except utilizing science and technology improving energy utilization rate also is important means the means such as new forms of energy.
Oil drilling is applied with the double fuel engine at home, and the double fuel engine acts as a fuel with diesel oil and conventional gas.Natural gas has characteristics such as exhaust emission is little, combustion heat value is high, energy storage density is big, operating cost is low as drilling motor fuel, has become a kind of " green " alternative fuel that has development potentiality.At present the well site engine mainly contains two kinds of low temperature liquid natural gas (LNG) and compressed natural gas (CNG) with natural gas.LNG compares characteristics such as have that the unit volume combustion heat value is high, energy storage density is big, safe, convenient transportation, operating cost are low with CNG, therefore receive more attention.LNG is stored under-162 ℃ the low temperature, before being used by engine, need be vaporized into normality earlier, and drilling crew adopts the empty bath apparatus cold that discharges in the LNG process of vaporizing directly to be discharged in the atmosphere at present.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
LNG can discharge a large amount of cold energy in vaporescence, its cold is between 860～883kJ/kg.By two total operate powers is that 1132KW double fuel engine per hour consumes LNG 242kg calculating, can produce cold energy 60KW, is equivalent to 24P air conditioner refrigerating amount, but the about 600m of cooling
2The area room.The prior art cold that discharges in the LNG process of will vaporizing directly is discharged in the atmosphere, causes bigger energy loss.
Summary of the invention
The purpose of the embodiment of the invention is the defective to above-mentioned prior art; Provide a kind of LNG of collection cold energy to be used for the system of drilling crew; This system satisfies the required cold energy of oil drilling team through collecting, store and discharging the cold energy that discharges in the low temperature LNG vaporescence, has practiced thrift the energy greatly.
The technical scheme taked of the present invention is to achieve these goals:
A kind ofly collect the system that the liquified natural gas cold energy is used for drilling crew; Comprise heat exchange/cool-storing box; Said heat exchange/cool-storing box comprises housing, in the said housing refrigerant is housed, and is provided with first heat exchanger and second heat exchanger; One end of said first heat exchanger is connected with the outer liquid natural gas tank of said heat exchange/cool-storing box through pipeline; The other end of said first heat exchanger is connected with engine through pipeline, and an end of said second heat exchanger is connected with the outer blower fan of said heat exchange/cool-storing box through pipeline, and the other end of said second heat exchanger is connected with user side through pipeline.
Pipeline between said first heat exchanger and the said engine is provided with vacuum tank.
Said housing is a heat-barrier material.
Said pipeline is all selected heat insulation carrier pipe for use.
The installation site of said first heat exchanger in said housing is higher than said second heat exchanger.
Said first heat exchanger is connected through two pipelines with said vacuum tank, and wherein a pipeline directly connects said first heat exchanger and said vacuum tank, and another pipeline is provided with heater, is equipped with controlled valve on said two pipelines.
Pipeline between said second heat exchanger and the said user side is provided with blending tank; Pipeline between said blower fan and the said blending tank is provided with two branch roads; First branch road is a cold output branch road; Second branch road is that surrounding air gets into the blending tank branch road, is equipped with controlled valve on said first branch road and said second branch road.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: required cold air in summer such as drilling crew's barracks, driller house is to drive refrigeration air-conditioner through generator special to supply with, and needs to consume a large amount of energy.The technical scheme that the embodiment of the invention provides is through collecting, store the cold energy that discharges in the low temperature LNG vaporescence; And use it for drilling crew, and both practice thrift the energy, improved energy utilization rate, reduce environmental pollution again; Help environmental protection, have remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is that provide in the embodiment of the invention a kind of collects the sketch map that hot natural gas cold energy is used for the system of oil drilling team.
Among the figure:
1, LNG jar, 2, heat exchange/cool-storing box, 3, refrigerant, 4, first heat exchanger, 5, second heat exchanger, 6, blower fan, 7, first branch road, 8, second branch road, 9, blending tank, 10, user side, 11, electric heater unit, 12, vacuum tank, 13, engine.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment 1
As shown in Figure 1, present embodiment provides a kind of system that the liquified natural gas cold energy is used for drilling crew of collecting, and mainly is made up of LNG jar 1, heat exchange/cool-storing box 2, refrigerant 3, first heat exchanger 4, second heat exchanger 5 and blower fan 6.Heat exchange/cool-storing box 2 both used as heat exchange box; Also use as cool-storing box; Heat exchange/cool-storing box 2 comprises housing, and refrigerant 3 is housed in the said housing, and is provided with first heat exchanger 4 and second heat exchanger 5; One end of first heat exchanger 4 is connected with heat exchange/cool-storing box 2 outer LNG jars 1 through pipeline; The other end of first heat exchanger 4 is connected with engine 13 through pipeline, and an end of second heat exchanger 5 is connected with heat exchange/cool-storing box 2 outer blower fans 6 through pipeline, and the other end of second heat exchanger 5 is connected with user side 10 through pipeline.
First heat exchanger 4 and second heat exchanger 5 in the present embodiment are the bellows-type heat exchanger, but this is not limited to the present invention, and first heat exchanger 4 and second heat exchanger 5 can be selected other forms of heat exchanger according to on-the-spot needs.The refrigerant of selecting for use in the present embodiment is the rare earth synthetic material, but is not limited to the present invention, and the embodiment of the invention can also be selected other refrigerants for use.Be distributing of isolated energy, heat exchange/cool-storing box 2 housings are selected the heat-barrier material with heat-insulation and heat-preservation effect for use among the embodiment, and the pipeline of each several part is all selected heat insulation carrier pipe for use in the system.
Low temperature LNG enters into first heat exchanger 4 in heat exchange/cool-storing box 2 through pipeline from LNG jar 1, in heat exchange/cool-storing box 2, carry out heat exchange with refrigerant 3, and low temperature LNG becomes gaseous natural gas through after the heat exchange, flows to engine 13 through pipeline and uses.The cold energy that discharges in the low temperature LNG vaporescence is collected and is stored in the refrigerant 3 of heat insulation/cool-storing box 2; When user side 10 has the cold energy demand; Make the external environment air enter into second heat exchanger 5 through blower fan 6; The cold that outside air stores in heat exchange/cool-storing box 2 and in the refrigerant 3 carries out heat exchange, makes ambient air temperature reduce, and the surrounding air after temperature reduces flows to user side 10 through pipeline and uses.Reasonable, the orderly operation of whole system can be by automatic controlling system.
Present embodiment provides a kind ofly collects the system that the liquified natural gas cold energy is used for drilling crew; Collect, store the cold energy that discharges in the low temperature LNG vaporescence through the refrigerant in heat exchange/cool-storing box 23; And use it for drilling crew; Both practice thrift the energy, improved energy utilization rate, and reduced environmental pollution again, help environmental protection, had remarkable economic efficiency and social benefit.Simultaneously, this system puts heat exchange and accumulator and unites two into one, and heat-exchanger rig and accumulator are put the system that separates compares, and has simplified system complexity, has reduced the volume of system, reduces investment cost, helps the system maintenance maintenance; Only use a kind of heat exchange media, this heat exchange media both used as heat-exchange medium, used as the storage cold media again, compared with heat-exchanger rig and accumulator being put the multiple heat exchange media that uses in the system that separates, and helped the maintaining of heat exchange media.
Embodiment 2
With reference to Fig. 1, embodiment 2 is the basis with embodiment 1, is with the difference of embodiment 1:
Pipeline between first heat exchanger 4 and the engine 13 is provided with vacuum tank 12.The setting of vacuum tank 12 makes the gaseous natural gas pressure that from first heat exchanger 4, comes out more steady, and the gaseous natural gas after the voltage stabilizing flows to engine 13 and uses safety and reliable more.Intersection at first branch road 7 and second branch road 8 is provided with blending tank 9, and this blending tank helps regulating the temperature of user side 10 required cold air.
Two heat exchangers in heat exchange/cool-storing box 2 are installed by high low level, and first installation site of heat exchanger 4 in the housing of heat exchange/cool-storing box 2 is than second heat exchanger, 5 height.The first high-order heat exchanger 4 is used for refrigerant 3 and low temperature LNG heat exchange, to collect cold energy; Second heat exchanger 5 of low level is used for refrigerant 3 and external environment air heat exchange, and the cold energy that is stored in the refrigerant is discharged.The refrigerant 3 that is in high and low position respectively can carry out the thermal balance that convection current forms refrigerant 3 inside automatically according to cold and hot degree difference.
First heat exchanger 4 is connected through two pipelines with vacuum tank 12; Wherein a pipeline directly connects first heat exchanger 4 and vacuum tank 12; Another pipeline is provided with heater 11, is equipped with controlled valve on said two pipelines, is used to control the switch of pipeline separately.The gaseous natural gas that from first heat exchanger 4, comes out can directly flow to engine 13 and use; Also can carry out extra-heated to natural gas as required before the use, only need open and close the switching that controlled valve on said two pipelines can be realized two pipelines during operation as required.
Pipeline between second heat exchanger 5 and the user side 10 is provided with blending tank 9; Pipeline between blower fan 6 and the blending tank 9 is provided with two branch roads, and first branch road is a cold output branch road, and second branch road is that surrounding air gets into the blending tank branch road; Be equipped with controlled valve on first branch road 7 and second branch road 8; Be used to control the switch of branch road separately, also be provided with controlled valve between first branch road 7 and second branch road 8, be used to control the switch of Trunk Line between second heat exchanger 5 and the user side 10.First branch road 7 is provided with extra cold discharging pipe in addition, can excessive cold energy directly be discharged in the air.
The contained cold energy of low temperature LNG is stored in the refrigerant 3 through after the heat exchange.Cold energy can be used as two parts utilization in heat exchange/cool-storing box 2:
A part uses directly for user side 10; The cold that another part exceeds user side 10 demands is stored by the refrigerant in heat exchange/cool-storing box 23, and it is few and when collecting cold energy and being not enough to satisfy the demands or engine 13 when shutting down, discharge to user side 10 again and use to consume LNG at engine 13.
Cold energy use is so to realize: when user side 10 has the cold energy demand; Open the switch of blower fan 6; Make the external environment air enter into second heat exchanger 5 through blower fan 6, the cold that surrounding air stores in heat exchange/cool-storing box 2 and in the refrigerant 3 carries out heat exchange, makes its temperature reduce.If the suitable client 10 that directly offers of the surrounding air after temperature reduces is used, then directly offer user side 10 and use, close the switch of second branch road 8 this moment; If the ambient air temperature after temperature reduces is lower than the requirement of user side 10; Then open the switch of second branch road 8; Inspiration external environment air in blending tank 9, the Cryogenic air of coming in from first branch road 7 with come in to give after the external environment air mixes user side 10 from second branch road 8 use blending tank 9.The effect of blending tank 9 is mixing.The design of first branch road 7, second branch road 8 and blending tank 9 can be played the effect of regulating ambient air temperature in the pipeline.
Present embodiment provides a kind ofly collects the system that the liquified natural gas cold energy is used for drilling crew, and except that having the advantage that embodiment 1 had, the temperature that can regulate the cold energy that leads to user side 10 more can satisfy the diversification needs of user side.The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. collect the system that the liquified natural gas cold energy is used for drilling crew for one kind; It is characterized in that, comprise heat exchange/cool-storing box, said heat exchange/cool-storing box comprises housing; In the said housing refrigerant is housed; And be provided with first heat exchanger and second heat exchanger, an end of said first heat exchanger is connected with the outer liquid natural gas tank of said heat exchange/cool-storing box through pipeline, and the other end of said first heat exchanger is connected with engine through pipeline; One end of said second heat exchanger is connected with the outer blower fan of said heat exchange/cool-storing box through pipeline, and the other end of said second heat exchanger is connected with user side through pipeline.
2. collection liquified natural gas cold energy according to claim 1 is used for the system of drilling crew, it is characterized in that, said pipeline is all selected heat insulation carrier pipe for use.
3. collection liquified natural gas cold energy according to claim 1 is used for the system of drilling crew, it is characterized in that, the installation site of said first heat exchanger in said housing is higher than said second heat exchanger.
4. collection liquified natural gas cold energy according to claim 2 is used for the system of drilling crew; It is characterized in that; Said first heat exchanger is connected through two pipelines with said vacuum tank; Wherein a pipeline directly connects said first heat exchanger and said vacuum tank, and another pipeline is provided with heater, is equipped with controlled valve on said two pipelines.
5. collection liquified natural gas cold energy according to claim 1 is used for the system of drilling crew; It is characterized in that; Pipeline between said second heat exchanger and the said user side is provided with blending tank, and the pipeline between said blower fan and the said blending tank is provided with two branch roads, and first branch road is a cold output branch road; Second branch road is the branch road that surrounding air gets into said blending tank, is equipped with controlled valve on said first branch road and said second branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106242082A CN102563777A (en) | 2010-12-31 | 2010-12-31 | System for collecting cold energy of liquefied natural gas in drilling team |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106242082A CN102563777A (en) | 2010-12-31 | 2010-12-31 | System for collecting cold energy of liquefied natural gas in drilling team |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102563777A true CN102563777A (en) | 2012-07-11 |
Family
ID=46409895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106242082A Pending CN102563777A (en) | 2010-12-31 | 2010-12-31 | System for collecting cold energy of liquefied natural gas in drilling team |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102563777A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251598A (en) * | 2014-09-16 | 2014-12-31 | 华南理工大学 | System and method for maintaining continuous running of LNG (liquefied natural gas) cold energy utilization device in cold accumulation mode |
| CN106322817A (en) * | 2016-09-30 | 2017-01-11 | 华南理工大学 | LNG cold energy storage and supply synchronous running system and method |
| CN106907946A (en) * | 2017-03-06 | 2017-06-30 | 常州大学 | A kind of new LNG cold energy recycles method and device |
| CN109163466A (en) * | 2018-09-01 | 2019-01-08 | 中国矿业大学 | Roadway cold-storage system and application method are discarded in a kind of underground |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300855Y (en) * | 1997-06-27 | 1998-12-16 | 清华同方股份有限公司 | Phase change material energy-storage type blowing fan set |
| CN2758674Y (en) * | 2004-12-23 | 2006-02-15 | 上海交通大学 | Refrigerating device for recovering liquefied natural gas cold energy for cold storage |
| CN1963347A (en) * | 2006-11-21 | 2007-05-16 | 华南理工大学 | Method for using cooling capacity of LNG with cooling media as medium and apparatus thereof |
| CN201607333U (en) * | 2009-12-25 | 2010-10-13 | 上海电机学院 | Test device for liquefied natural gas cold-energy adjusting system |
| CN202002241U (en) * | 2010-12-31 | 2011-10-05 | 中国石油天然气集团公司 | System for collecting liquefied natural gas cold energy for being used for drill crews |
-
2010
- 2010-12-31 CN CN2010106242082A patent/CN102563777A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300855Y (en) * | 1997-06-27 | 1998-12-16 | 清华同方股份有限公司 | Phase change material energy-storage type blowing fan set |
| CN2758674Y (en) * | 2004-12-23 | 2006-02-15 | 上海交通大学 | Refrigerating device for recovering liquefied natural gas cold energy for cold storage |
| CN1963347A (en) * | 2006-11-21 | 2007-05-16 | 华南理工大学 | Method for using cooling capacity of LNG with cooling media as medium and apparatus thereof |
| CN201607333U (en) * | 2009-12-25 | 2010-10-13 | 上海电机学院 | Test device for liquefied natural gas cold-energy adjusting system |
| CN202002241U (en) * | 2010-12-31 | 2011-10-05 | 中国石油天然气集团公司 | System for collecting liquefied natural gas cold energy for being used for drill crews |
Non-Patent Citations (1)
| Title |
|---|
| 曾乐才，张东，徐建辉，廖文俊: "液化天然气冷能储存技术研究", 《上海电气技术》, vol. 3, no. 3, 30 September 2010 (2010-09-30) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251598A (en) * | 2014-09-16 | 2014-12-31 | 华南理工大学 | System and method for maintaining continuous running of LNG (liquefied natural gas) cold energy utilization device in cold accumulation mode |
| CN106322817A (en) * | 2016-09-30 | 2017-01-11 | 华南理工大学 | LNG cold energy storage and supply synchronous running system and method |
| CN106322817B (en) * | 2016-09-30 | 2022-05-24 | 华南理工大学 | LNG cold energy storage and synchronous cold energy supply operation system and method |
| CN106907946A (en) * | 2017-03-06 | 2017-06-30 | 常州大学 | A kind of new LNG cold energy recycles method and device |
| CN109163466A (en) * | 2018-09-01 | 2019-01-08 | 中国矿业大学 | Roadway cold-storage system and application method are discarded in a kind of underground |
| CN109163466B (en) * | 2018-09-01 | 2019-12-17 | 中国矿业大学 | underground abandoned roadway cold storage system and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102758689B (en) | Ultra-supercritical air energy storage/release system | |
| CN103016152B (en) | Supercritical air energy storage system with novel process | |
| CN201093819Y (en) | LNG cold energy step level, integrated utilization system | |
| CN201740312U (en) | Small dispersed-type solar energy combined cooling, heating and power supply system | |
| CN102798184B (en) | A kind of heat pipe hot pump hybrid system | |
| CN102758748A (en) | High-pressure liquid air energy storage/release system | |
| WO2023142394A1 (en) | Energy storage-type energy system | |
| CN106766356A (en) | A kind of solar energy assisted absorption refrigerating plant for refrigerator car | |
| CN102563777A (en) | System for collecting cold energy of liquefied natural gas in drilling team | |
| CN211695491U (en) | Energy supply system combining area distributed energy system and lake water source heat pump | |
| CN106764414A (en) | A kind of LNG gasification station cold, heat and power triple supply system | |
| CN109916135B (en) | Pump-free circulation method for small gas liquefaction device | |
| CN1731035A (en) | Multiple energy sources driven lithium bromide refrigerating air conditioner | |
| CN102494380B (en) | Hydrate cold accumulation system with refrigeration function | |
| CN101749043A (en) | Temperature differential mine air conditioner cold-heat source energy system | |
| CN105756733A (en) | Method and system for supplying energy by taking carbon dioxide as carrier | |
| CN210320439U (en) | Cold-storage central air conditioner with power generation function | |
| CN108344089A (en) | Supply oxygen refrigeration system and oxygen supply refrigeration and generation system | |
| CN202002241U (en) | System for collecting liquefied natural gas cold energy for being used for drill crews | |
| CN211345956U (en) | Liquefied natural gas cold energy ice making device | |
| AU2013338268A1 (en) | Improved air handling and cooling in a mine | |
| WO2022222758A1 (en) | Lng carrier refrigeration micro-power air conditioning system | |
| CN111219906A (en) | Energy supply system combining area distributed energy system and lake water source heat pump | |
| CN204387683U (en) | A kind of LNG stores supplier | |
| CN106482266A (en) | A kind of ground source constant temperature system of efficient energy-saving and emission-reducing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |