CN101566364B - Closed heating system used for oil fields - Google Patents
Closed heating system used for oil fields Download PDFInfo
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- CN101566364B CN101566364B CN2009100851277A CN200910085127A CN101566364B CN 101566364 B CN101566364 B CN 101566364B CN 2009100851277 A CN2009100851277 A CN 2009100851277A CN 200910085127 A CN200910085127 A CN 200910085127A CN 101566364 B CN101566364 B CN 101566364B
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Abstract
The invention discloses a novel closed heating system used for oil fields, comprising a heat exchange system, a radiating system and a heat medium circulating system. The heat exchange system adopts heat source steam and heat-conducting medium for exchange of cold and heat; the heat exchange system is connected with the radiating system; and the heat medium circulating system inputs the high-temperature heat medium after exchange of cold and heat into the radiating system from the heat exchange system, and the high-temperature heat medium returns to the heat exchange system after radiation andtemperature reduction, thus forming a closed heating system. The invention also comprises a heat source supply system; the heat exchange system is a volume steam system for exchange of cold and heat, a tube fin type heat exchange system or a steam pneumatic type heat exchange system. The radiating system comprises a negative pressure superconducting radiator. The closed system leads the operation of equipment to be more safe and environment-friendly, the negative pressure superconducting radiator has good radiation effect, and the energy-saving requirement is realized; and a plurality of type s heat exchangers carry out fast and high-efficiency exchange of cold and heat respectively, thus improving the efficiency of heat exchange and effectively reducing the heat energy loss in the processof heat exchange.
Description
Technical field
The present invention relates to the heating equipment technical field, be specifically related to a kind of oil field novel closed-type heating system that is used for.
Background technology
In recent years, the heavy oil production in the most of oil field of China increased day by day, and the most effective means of thickened oil recovery are to annotate the steam thermal recovery, and the generation of high temperature, HCS must be accompanied by lot of energy consumption, and its cost accounts for thickened oil recovery totle drilling cost 60%.In the viscous crude production process, the proportion of non-well air consumption is higher relatively.Especially more at northern area Winter protection usefulness gas, be located in the north temperate zone such as Xinjiang, winter climate cold, the heating phase is longer, and winter heating insulation in the defeated multi-purpose station station of heavy crude heat extraction heating plant, Sewage Disposal and collection needs a large amount of heat energy.
And at present, the oil field warming mostly adopts high temperature, HCS (reducing to 0.3-0.6Mpa) or individual well oil, gas, water to mix output liquid, oilfield sewage, directly enters its shortcoming of interior heating heat-insulation system circulation back, station to be:
The first, potential unsafe factor is many, at first, winter, the steam heating system was to enter heat-insulation system after high temperature, the direct step-down of HCS, if step-down control is unstable, safety valve is malfunctioning or hot insulated line stops up, will cause heating system pressure to raise, so that cause heating line or fin explosion; Secondly, high-temperature vapour is the heat exchange condensation in each radiator, discharges its gasification latent heat, and this is a constant temperature process, and radiator temperature is higher, about 140 ℃, easily causes that the staff scalds etc.; This has, toxic gas such as sulfide hydrogen in the oil, and safety coefficient is low, and causes environmental pollution.
The second, return water temperature is higher, and the heat energy utilization rate is low, and the unavailable heat loss is big, the condensed condensate water of steam, its temperature is higher relatively, enters return water system through drain valve, directly do not enter the emptying pond by heat-exchanger rig, cause the waste of heat, the unavailable heat loss of steam heating is bigger; If the drain valve poor quality is in bad repair, cause its work undesired, make a large amount of steams enter return water system, drain into the emptying pond, cause the waste of steam.For example, one 60 square metres metering multi-purpose station, a year consumption steam expense is 1 day * 14 side's steam * 180 day * 80 yuan/side=20.16 ten thousand yuan/year.
Three, daily operation management workload is bigger, the operating cost height, because steam heating temperature height, pressure oscillation is big, the thermal stress that vapor pipe net, valve member and radiator are produced is big, make that the run, drip, leak phenomenon of vapor pipe net, valve member and radiator is serious, cause the line service amount big.
Summary of the invention
The objective of the invention is defective, provide a kind of with low cost, security high yield, the closed heating system that is used for the oil field of energy-conserving and environment-protective at above-mentioned prior art.
The technical scheme taked of the present invention is to achieve these goals: a kind of closed heating system that is used for the oil field, comprise heat-exchange system, cooling system and the heating agent circulatory system, described heat-exchange system adopts thermal source and heat conduction matchmaker to carry out cold and hot exchange, described heat-exchange system and cooling system are connected with each other, the described heating agent circulatory system will be imported cooling system by heat-exchange system through the high temperature heating agent after the cold and hot exchange, return heat-exchange system behind the radiating and cooling, thereby form a closed heating system.
Described heat-exchange system is the cold and hot exchange system of volume steam, fin-tube type heat-exchange system or steam pneumatic type heat-exchange system.
The cold and hot exchange system of described positive displacement steam comprises the cold and hot switching equipment of positive displacement, the cold and hot switching equipment of described positive displacement comprises the volume jar, be provided with steam pipe in the described volume jar, described steam pipe adopts double-deck loop type to lay in the volume jar, the tube wall of steam pipe is provided with puff prot, be provided with defeated heat pipe between the two-layer spiral coil of described double-layer spiral coil pipe, described defeated heat pipe is provided with the hydrothermal solution outlet, the bottom of described volume jar is provided with liquid back pipe, described defeated heat pipe links to each other with described heating agent recycle unit respectively with liquid back pipe, and the described heating agent circulatory system comprises at least one heat medium circulation pump.
Described fin-tube type heat-exchange system comprises the thermal source total trunk, fin-tube type heat exchanger and radiator, described thermal source total trunk is provided with bypass, be provided with heat source tube in the fin-tube type heat exchanger, the outer surface of described heat source tube is provided with a plurality of radiating fins, one of heat source tube terminates on the bypass of total trunk, the other end stretches out another bypass back and on the thermal source total trunk from fin-tube type heat exchanger and is connected, superconducting liquid injects from an end of fin-tube type heat exchanger, and the other end from fin-tube type heat exchanger enters radiator again.
Described steam pneumatic type heat-exchange system comprises air intake apparatus, pneumatic heater, advance heat conduction matchmaker equipment, circularly-supercharged pump, described air intake apparatus is connected with a through hole of pneumatic heater, and is provided with automatic temperature control valve between air intake apparatus and pneumatic heater, describedly advances heat conduction matchmaker equipment and links to each other with another through hole of pneumatic heater, circularly-supercharged pump is located between heating equipment and the pneumatic heater, and is provided with one way stop peturn valve between the circulation of pneumatic heater and cooling system.
Described circularly-supercharged pump links to each other with the instrument switch board, and the instrument switch board links to each other with automatic temperature control valve by automatic temperature-controlled instrument simultaneously.
Described closed heating system also comprises the thermal source feed system, described thermal source feed system comprises the oilfield sewage circulatory system, the oilfield sewage heat exchange series coolant circulating system of unifying, the described oilfield sewage circulatory system comprises circulating pump, sewage radiator and effluent cycle pipe, described circulating pump and sewage radiator are communicated with by the effluent cycle pipe, described oilfield sewage heat-exchange system comprises, blower fan and refrigerant evaporator are separately positioned on the both sides of described sewage radiator; Described coolant circulating system comprises compressor, fluid reservoir, filter, expansion valve and refrigerant circulation pipe, described compressor, fluid reservoir, filter, expansion valve, refrigerant evaporator are by the connection that circulates successively of refrigerant circulation pipe, described heat-exchange system is arranged between compressor and the fluid reservoir, described heat-exchange system is a freezing machine, described blower fan is to the air blast of sewage radiator, by the sewage radiator is carried out forced heat radiation, refrigerant in the evaporimeter is heated, through the refrigerant of compressor compresses at condenser to heat conduction matchmaker heat exchange.
Described cooling system comprises the negative-pressure superconductor radiator, and the heat eliminating medium of described negative-pressure superconductor radiator is a superconducting liquid.
Described source heat is thermal source steam or thermal source liquid, and described thermal source steam is the high-temperature gas of water vapour or oil well output, and described thermal source liquid is oilfield sewage, produced liquid in oil well.
Described heat conduction matchmaker is water, superconducting fluid, conduction oil or produced liquid in oil well, oilfield sewage.
The invention has the beneficial effects as follows:
The closed system equipment that makes moves safety and environmental protection more, negative-pressure superconductor radiator or forced convertion radiator, good heat dissipation effect, also realized requirements of saving energy simultaneously, the heat exchanger of several types all can carry out cold and hot exchange rapidly and efficiently, improve the efficient of heat exchange, effectively reduced the heat-energy losses in the heat exchanging process.
Description of drawings
Fig. 1 is the cold and hot exchange system schematic diagram of volume steam of the present invention;
Fig. 2 is a fin-tube type heat-exchange system schematic diagram of the present invention;
Fig. 3 is a steam pneumatic type heat-exchange system intention of the present invention;
Fig. 4 is a negative-pressure superconductor radiator schematic diagram of the present invention;
Fig. 5 is a thermal source feed system schematic diagram of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
This closed heating system that is used for the oil field disclosed by the invention, comprise heat-exchange system, cooling system and the heating agent circulatory system, described heat-exchange system adopts thermal source steam and heat conduction matchmaker to carry out cold and hot exchange, described heat-exchange system and cooling system are connected with each other, the described heating agent circulatory system will be imported cooling system by heat-exchange system through the high temperature heating agent after the cold and hot exchange, return heat-exchange system behind the radiating and cooling, thereby form a closed heating system.
Referring to Fig. 1, be the cold and hot exchange system schematic diagram of volume steam of the present invention.Be provided with steam pipe 1-2 in the volume jar 1-1, described steam pipe adopts double-deck loop type to lay in the volume jar, the tube wall of steam pipe is provided with puff prot 1-3, puff prot is the umbrella puff prot, be provided with defeated heat pipe between the two-layer spiral coil of described double-layer spiral coil pipe, described defeated heat pipe is provided with hydrothermal solution outlet 1-4, and the bottom of described volume jar is provided with liquid back pipe, described defeated heat pipe links to each other with the heating agent recycle unit respectively with described liquid back pipe, and the hydrothermal solution outlet is the hydrothermal solution outlet of a plurality of starlike distributions.The bottom of volume jar is provided with liquid return hole 1-12.The cold and hot switching equipment of positive displacement links to each other with heating agent recycle unit 1-10, the other end of heating agent recycle unit links to each other with heat dissipation equipment 1-11, heating agent in the positive displacement cool-heat-exchanger pumps into heat dissipation equipment by the heating agent recycle unit, is provided with manhole 1-5 at the top of volume jar.Be provided with pressure probe 1-6 on the top of volume jar, the other end of pressure probe is connected with instrument switch board 1-8, and the instrument switch board links to each other with salt room self-draining valve 1-9 simultaneously.Top at the volume jar also is provided with liquid level detector 1-7, and the other end of described liquid level detector is connected with the instrument switch board.Heat dissipation equipment is a vacuum superconductive radiator.Heating agent can be to be thermal conductance matchmakers such as water, superconducting fluid, conduction oil or produced liquid in oil well.Steam is gases such as water vapour or oil well output gas.
The operation principle of the cold and hot exchange system in the present embodiment, be to utilize post-decompression pressure to be 0.25Mpa-0.4Mpa, 145 ℃ of temperature, the steam of mass dryness fraction 84%, directly enter positive displacement steam cool-heat-exchanger, to the heating of the water in the volume jar or other conductive fluid, make its temperature rise to 90 ℃ by 70 ℃ after, pump into vacuum superconductive radiator or other types radiator, to indoor heat release.The steam that enters in the heat exchanger is double-deck annular umbrella-like shower nozzle, the heat transfer rate is fast, the thermal efficiency is high, hot water outlet is starlike, guarantees that outlet temperature is not less than 90 ℃, can prepare startup of two booster pumps, one standby, guarantee that heating system runs well, pressure probe is housed, after the conversion of instrument cabinet signal at the heat exchanger top, can make salt room gate open and close automatically, unnecessary hot water uses for the salt room.
Referring to Fig. 2, be fin-tube type heat-exchange system schematic diagram of the present invention.Thermal source total trunk 2-1, fin-tube type radiator 2-4, radiator 2-6, described thermal source total trunk is provided with bypass 2-2, and heat source tube 2-7 is arranged in the fin-tube type heat exchanger, and the outer surface of described heat source tube is provided with a plurality of radiating fin 2-9, one terminates on the bypass, the other end stretches out another bypass back and on the thermal source total trunk from fin-tube type heat exchanger and is connected, and superconducting liquid injects from the ascending pipe 2-5 of an end of fin-tube type heat exchanger, and 2-8 enters radiator from other end delivery line.The junction of described thermal source total trunk and heat source tube is provided with ball-and-seat 2-3.Described heat source tube is a pressure line, and its load performance is not less than 12Mpa.Thermal source in the described thermal source house steward is steam or hot water.
Utilize steam boiler outlet pressure 9Mpa to be power, temperature is a thermal source for 310 ℃, on the vapor outlet port backbone, walk a bypass, with few part steam inlet tube fin heat exchanger, in outlet, ball-and-seat is housed, the superconducting liquid of exempting from the big wall thickness pressure-bearing vapor line heat exchanging device carries out heat exchange, after making its superconducting fluid temperature rapidly increase to 120 ℃, superconducting fluid in heat absorption, does not gasify, and carries heat energy with the pattern of liquid and pumps into the heat-transfer pipe net, carry out heat release on the way, after vacuum superconductive radiator is heated (or other types radiator), it is 22 ℃-24 ℃ that indoor heat release is made its indoor temperature, reaches the heating purpose.This heat exchanger inner coil pipe pressure-bearing design 12Mpa meets the safety in production requirement, requires volume pressure-bearing 0.5Mpa outward, much larger than operating pressure 0.2Mpa.The heat energy that this heat exchanger absorbs, only account for 1-3 ℃ of boiler export running temperature, improve outlet operating pressure 0.1-0.2Mpa as boiler, just do not influence outlet temperature, this design steam consumption is 0, just can save heating steam consumption 100%, and does not have hot water and efflux, heating operation pressure is 0.2Mpa, and is safe and reliable.
This heat-exchange system compact conformation, because fin-tube type heat exchanger has two subsurfaces of expansion, make its surface area can reach 1000～2500m2/s, can effectively improve heat transfer efficiency, because the disturbance of fin convection cell is constantly broken the boundary layer, thereby has the bigger coefficient of heat transfer, simultaneously because the very thin thickness of dividing plate, fin, have high-termal conductivity, so that fin-tube type heat exchanger can reach very high efficient.Most equipment need not be born the influence of high pressure-temperature, and expense seldom needs repairing; Heat is imitated the high 20%-30% of ratio of specific heat hot-water heating; Do not have and efflux hot water; Simple to operate, aligned air inflow after, reduce management.Adaptability is strong, is used for gas-gas, solution-air, liquid-liquid.Energy-conservation, steam is not loss in whole circulation, joint vapour 100%, energy-conservation reaching more than 90%; Heating Medium is the low pressure superconducting fluid, and is safe and reliable.
Referring to Fig. 3, be steam pneumatic type heat-exchange system intention of the present invention.Comprise air intake apparatus 3-1, pneumatic heater 3-2, water inlet equipment 3-3, circularly-supercharged pump 3-4 and heating equipment 3-5, it is characterized in that, described air intake apparatus is connected with a through hole of pneumatic heater, and between air intake apparatus and pneumatic heater, be provided with automatic temperature control valve 3-6, described water inlet equipment links to each other with another through hole of pneumatic heater, circularly-supercharged pump is located between heating equipment and the pneumatic heater, and is provided with one way stop peturn valve 3-7 between the circulation of pneumatic heater and heating equipment.Simultaneously, link to each other with instrument switch board 14 at described circulating pump booster pump, the instrument switch board links to each other with automatic temperature control valve by automatic temperature-controlled instrument 3-8 simultaneously.Be provided with the overflow water outlet that has constant pressure valve 3-9 between described water inlet equipment and the described pneumatic heat air.Be provided with the moisturizing water inlet 3-10 that has water compensating valve between described water inlet equipment and the pneumatic heat air.The other end of described instrument switch board is connected with salt room automatic drain valve 3-11.Be provided with one way stop peturn valve 3-12 between described circularly-supercharged pump and the heating equipment.Described air intake apparatus establish and pneumatic heater between be provided with one way stop peturn valve 3-13.
During work, the high pressure-temperature steam enters pneumatic heater from air intake apparatus, simultaneously, water inlet equipment also feeds current and enters in the pneumatic heater, the air inflow of air intake apparatus is controlled with automatic temperature control valve, and automatic temperature control valve links to each other with automatic temperature-controlled instrument, steam temperature behind the pneumatic heater of temperature controller monitoring process, automatic temperature-controlled instrument is controlled by the instrument switch board, when the steam temperature behind the pneumatic heater of process is too high, can control automatic temperature-controlled instrument by the instrument switch board, again by regulating automatic temperature control valve, reduce the input quantity of high pressure-temperature gas, thereby reduce temperature; If the steam temperature behind the pneumatic heater of process is crossed when hanging down, can increase the input quantity of gas.The size of intake pressure can be controlled by constant pressure valve, regulates when pressure is excessive and decides village's valve, and too much water overflow is gone out, thereby reduces hydraulic pressure, crosses when hanging down, and can add water by water compensating valve.Circularly-supercharged pump can be assisted pressurization, guarantees the circulation of steam.One way stop peturn valve is used to guarantee that steam stream the phenomenon that flows backwards can not occur.Heating equipment is realized heating by using the gas-vapor mix of coming out from pneumatic heater.
Now operation principle and the beneficial effect to steam pneumatic type heat-exchange system is analyzed as follows:
The operation principle of pneumatic heater and traditional vapor steam blaster are essentially different, so on the function significant difference are arranged also.Usually, in the spread speed gas of sound between 300～400m/s, in the water more than 1200m/s, and velocity of sound rapid drawdown to the 10～30m/s of air-water mixture.Use the pneumatic heater of this principle design, realized that medium is by low pressure flowing to high pressure.In traditional vapor steam blaster, the friction that water is subjected to flow of vapor enters throat, then absorbs the kinetic energy of steam, finishes condensation process simultaneously.On performance, if when the steam absolute pressure was lower than 2 times of water absolute pressure into, steam can not fully expand and produce higher flow velocity, thereby equipment can not operate as normal, also can not provide bigger circulation power, the more impossible discharge pressure that is higher than steam pressure that provides.Yet the water inlet of pneumatic heater is to finish under the differential pressure action of a regulation, thereby has solved the deadlock problem.Indoor at two phase flow, air-water mixture under the supersonic speed condition, is accompanied by complicated heat and mass transfer process very uniformly, has finished the exchange of kinetic energy, has obtained the fair speed energy.Under the effect of ripple, speed can be mutated into the pressure energy to the changing of subcritical state from overcritical subsequently, the pressure that obtains under certain condition, may surpass the first pressing of steam fully.Pneumatic heater designs by " H-Max principle ", and lift is big, and the energy that produces noise has been utilized, so noise has also fallen.Owing to the growth of lift, the adaptation occasion that the reduction of noise makes is more extensive simultaneously, and performance is more perfect.
Design innovation and beneficial effect show as: 1, utilize the decompressor of heating plant inner vapor heating, steam pressure is decompressed to 0.4～0.6MPa, by automatic temperature control valve, offer pneumatic heater; 2, utilize steam acting principle to deliver between each heating after with heat supply network recirculated water heating supercharging by pneumatic heater, consider vapor flow rate, pressure oscillation, install automatic pressure augment system additional at the heat supply network circulating water outlet, avoid because steam pressure is low, systemic circulation is not smooth; 3, adopt constant pressure valve control circulatory system pressure stable, simultaneously the steam condensed water is effluxed,, can consider the pneumatic heating system of steam is installed near the salt room in order to make full use of condensed water, condensed water is entered the salt pond, promptly reclaimed the waste heat that condensed water rationally utilizes condensed water again; 4, utilize automatic temperature-controlled instrument, by the temperature detection of outdoor temperature and heat supply network recirculated water, regulate the operating load of pneumatic heater automatically, adjustable range is between 30～100%; 5, adopt auto temperature controlled system and automatic pressure augment system, reach heating system and control automatically, accomplish unmanned.
Pneumatic heater utilizes the steam capacity for work that circulation power is provided, and is different from face formula heat exchanger and realizes circulation by water pump.
Referring to Fig. 4, be negative-pressure superconductor radiator schematic diagram of the present invention.Comprise heat conduction matchmaker pipeline 4-2 and superconduction heat dissipation equipment 4-1, the heat conduction matchmaker 4-3 in the heat conduction matchmaker pipeline conducts to superconducting liquid in the superconduction heat dissipation equipment with heat, thereby realizes utilizing the purpose of superconducting liquid heat radiation.Described superconducting liquid generally is made up of ethanol, metal dust etc.The required heating agent of this radiator has only existing with 1/15 of radiator, has reduced the use amount of heating agent, also just equals to have reduced the use amount of steam, and negative-pressure superconductor liquid radiator has only the heat conduction matchmaker pipeline of bottom to be generally 1 writing brush line, and other parts are superconducting liquid.The thermal efficiency is higher than is using radiator 20%-30%, and fast, high, the required heating agent of the thermal efficiency of conducting heat is a vacuum atmospheric superconductive liquid, and its heat transfer efficiency is higher than the 20%-30% of water, its characteristics: nontoxic, no burn into-40 is ℃ icing.Connect for scurrying connection greatly, omnidistance for welding, no leak source does not have maintenance cost substantially.
Referring to Fig. 5, it is the structural representation of thermal source feed system of the present invention, circulating pump 2, sewage radiator 4 are communicated with the formation oilfield sewage circulatory system by the effluent cycle pipe, and the water inlet end of effluent cycle pipe inserts the oilfield sewage outlet of oil well 1, and the water side links to each other with the water injection facility of oil well; The sewage radiator can select for use area of dissipation big, and heat dissipation region is concentrated, can carry out heat dissipation equipments such as the radiating tube of good ventilation or fin at radiating area, is preferably design and has good ventilation effect, the copper tube radiator that thermal diffusivity is good; Blower fan 3 and refrigerant evaporator 5 are separately positioned on the both sides of sewage radiator, constitute the oilfield sewage heat-exchange system; Compressor 6, fluid reservoir 8, filter 9, expansion valve 10, refrigerant evaporator are communicated with by the refrigerant circulation pipe successively, constitute coolant circulating system; Heat-exchange system is arranged between compressor and the fluid reservoir, described heat-exchange system comprises condenser 7, condenser is made up of refrigerant circulation pipe and drainer, the lower end of drainer is provided with water inlet, and the cold water that supply and demand will be heated injects, and the upper end is provided with delivery port, for heated hot water output, after hot water entered heating equipment, the backflow cold water after the heat radiation of heating place injected drainer by water inlet again and heats, and finishes circulation.
During the operation of this thermal source feed system, circulating pump is extracted the hot water in the oil well out, inject the sewage radiator by the effluent cycle pipe, simultaneously, use blower fan to the air blast of sewage radiator in a side, carry out forced heat radiation, the wind speed that blower fan bloats is the best about with 8m/s, enter refrigerant evaporator through the hot blast behind the sewage radiator, in evaporimeter, carry out heat exchange, low-temp low-pressure gaseous coolant in the refrigerant evaporator is heated, make the gaseous coolant of low-temp low-pressure become the high-temperature low-pressure gaseous coolant, the high-temperature low-pressure gaseous coolant passes through compressor pressurizes again, enter condenser after forming the HTHP gaseous coolant, become the liquid refrigerants of cryogenic high pressure after in drainer the cold water of needs heating being heated, the gaseous coolant that becomes low-temp low-pressure through the throttling step-down of expansion valve enters evaporimeter again, finishes once circulation.The water inlet of drainer lower end injects cold water, after adding, gaseous coolant by HTHP in drainer becomes the hot water that is used to heat, export from the delivery port of drainer upper end again, after hot water enters heating equipment, backflow cold water after the heat radiation of heating place heats by the water inlet injection drainer of drainer again, finishes circulation.
The source heat steam that the present invention utilized is generally water vapour or oil well output high-temperature gas, and the use of the high-temperature gas of oil well output has utilized the hot gas that produces in the oil exploitation process, has not only effectively utilized heat energy, and plays the effect of environmental protection.
Above-described embodiment, the present invention specific embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.
Claims (5)
1. closed heating system that is used for the oil field, comprise heat-exchange system, the cooling system and the heating agent circulatory system, described heat-exchange system adopts thermal source and heat conduction matchmaker to carry out cold and hot exchange, described heat-exchange system and cooling system are connected with each other, the described heating agent circulatory system will be imported cooling system by heat-exchange system through the high temperature heat conduction matchmaker after the cold and hot exchange, return heat-exchange system behind the radiating and cooling, thereby form a closed heating system, it is characterized in that: described heat-exchange system is the cold and hot exchange system of positive displacement steam, the cold and hot exchange system of described positive displacement steam comprises the cold and hot switching equipment of positive displacement, the cold and hot switching equipment of described positive displacement comprises the volume jar, be provided with steam pipe in the described volume jar, described steam pipe adopts double-deck loop type to lay in the volume jar and forms the double-layer spiral coil pipe, the tube wall of steam pipe is provided with puff prot, be provided with defeated heat pipe between the two-layer spiral coil of described double-layer spiral coil pipe, described defeated heat pipe is provided with the hydrothermal solution outlet, the bottom of described volume jar is provided with liquid back pipe, described defeated heat pipe links to each other with the described heating agent circulatory system respectively with liquid back pipe, and the described heating agent circulatory system comprises at least one heat medium circulation pump.
2. closed heating system that is used for the oil field, comprise heat-exchange system, the cooling system and the heating agent circulatory system, described heat-exchange system adopts thermal source and heat conduction matchmaker to carry out cold and hot exchange, described heat-exchange system and cooling system are connected with each other, the described heating agent circulatory system will be imported cooling system by heat-exchange system through the high temperature heat conduction matchmaker after the cold and hot exchange, return heat-exchange system behind the radiating and cooling, thereby form a closed heating system, it is characterized in that: described closed heating system also comprises the thermal source feed system, described thermal source feed system comprises the oilfield sewage circulatory system, the oilfield sewage heat exchange series coolant circulating system of unifying, the described oilfield sewage circulatory system comprises circulating pump, sewage radiator and effluent cycle pipe, described circulating pump and sewage radiator are communicated with by the effluent cycle pipe, described oilfield sewage heat-exchange system comprises, blower fan and refrigerant evaporator are separately positioned on the both sides of described sewage radiator; Described coolant circulating system comprises compressor, fluid reservoir, filter, expansion valve and refrigerant circulation pipe, described compressor, fluid reservoir, filter, expansion valve, refrigerant evaporator are by the connection that circulates successively of refrigerant circulation pipe, described heat-exchange system is arranged between compressor and the fluid reservoir, described heat-exchange system is a freezing machine, described blower fan is to the air blast of sewage radiator, by the sewage radiator is carried out forced heat radiation, refrigerant in the refrigerant evaporator is heated, through the refrigerant of compressor compresses at freezing machine to heat conduction matchmaker heat exchange.
3. according to claim 1 or 2 each described a kind of closed heating systems that are used for the oil field, it is characterized in that: described cooling system comprises the negative-pressure superconductor radiator, and the heat eliminating medium of described negative-pressure superconductor radiator is a superconducting liquid.
4. a kind of closed heating system that is used for the oil field according to claim 1, it is characterized in that: described thermal source is thermal source steam or thermal source liquid, described thermal source steam is the high-temperature gas of water vapour or oil well output, and described thermal source liquid is oilfield sewage, produced liquid in oil well.
5. a kind of closed heating system that is used for the oil field according to claim 1 is characterized in that: described heat conduction matchmaker is water, superconducting fluid, conduction oil or produced liquid in oil well, oilfield sewage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100851277A CN101566364B (en) | 2009-06-02 | 2009-06-02 | Closed heating system used for oil fields |
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| CN2009100851277A CN101566364B (en) | 2009-06-02 | 2009-06-02 | Closed heating system used for oil fields |
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| CN101566364A CN101566364A (en) | 2009-10-28 |
| CN101566364B true CN101566364B (en) | 2010-12-01 |
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| CN2009100851277A Expired - Fee Related CN101566364B (en) | 2009-06-02 | 2009-06-02 | Closed heating system used for oil fields |
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| CN103528391B (en) * | 2013-10-10 | 2016-04-27 | 新疆敦华石油技术股份有限公司 | A kind of for oil field carbonated drink Hybrid Heating heating equipment |
| CN112483061A (en) * | 2019-09-12 | 2021-03-12 | 中国石油天然气股份有限公司 | Fracturing construction system and fracturing construction heat preservation method |
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