CN204267119U - Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating - Google Patents
Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating Download PDFInfo
- Publication number
- CN204267119U CN204267119U CN201420713031.7U CN201420713031U CN204267119U CN 204267119 U CN204267119 U CN 204267119U CN 201420713031 U CN201420713031 U CN 201420713031U CN 204267119 U CN204267119 U CN 204267119U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- circulation
- circulation loop
- outlet
- condenser
- 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
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a kind of equipment utilizing oil field geothermal tail water to carry out the generating of dual-circulation screw expansion machine, comprise vaporizer, preheater, liquid container, condenser, decompressor, generator and cooling tower.Described power generating equipment is made up of three groups of circulation loops, and circulation loop one is heat supplying loop, and circulation loop two is generating and soft circulation circuit, and circulation loop three is cooling circuits.The utility model is recycled geothermal tail water waste heat by dual-circulation screw expansion machine generation technology, produces high-grade electric energy.Adopt organic working medium as working medium and the low temperature exhaust heat heat exchange of thermodynamic cycle, after organic working medium heat absorption, produce high pressure steam, promote double-work medium decompressor 10 drive electrical generators and generate electricity.The utility model structure is simply installed easily, simple to operate.Generator set take up an area little, highly versatile, can complete machine dress and mobile, the feature of suitable industrial exhaust heat and gas-to electricity.Maintenance and Repair are convenient.
Description
Technical field
The utility model belongs to Low-temperature heat utilization techniques field, particularly a kind of equipment utilizing oil field geothermal tail water to carry out the generating of dual-circulation screw expansion machine.
Background technique
Along with the exploitation in oil field utilizes, its stock number will reduce gradually.For North China Oilfield, it stays backlands heat stations oil production quite little, according to current oil recovery operating mode, only open part electric submersible pump, electric submersible pump is all provided with frequency variator, operation frequency is about 40Hz, geothermal water quantity of circulating water also reduced more originally, and current geothermal water quantity of circulating water is about 2500m3/ days, counts roughly 104t/h, be mainly used in maintaining website oil transport pipeline temperature, ensure to produce.This part geothermal water water-exit temperature about 110 DEG C, although this stage water temperature is higher, if be used for generating by this part 110 DEG C of geothermal water, cooling to 70 ~ 80 DEG C after generating can affect pipeline dimension temperature.After but if the geothermal water of 110 is first used for pipeline dimension temperature, geothermal tail water still has more than 80 DEG C, water yield 2500m3/ days, and this part geothermal tail water is not utilized and directly recharges go back to underground, generate electricity with the heat of this part geothermal tail water, not only ensure production but also make maximize revenue.
In low temperature exhaust heat field, adopt organic working medium (ORC) as working medium and less than the 90 DEG C low-temperature water heating heat exchange of thermodynamic cycle, after organic working medium heat absorption, produce high pressure steam, promote double-work medium decompressor drive electrical generators and generate electricity.This is that conventional electric power generation technology can not be accomplished (conventional electric power generation requires that heat source temperature is more than 350 DEG C), thus widened the residual heat resources scope that can reclaim generating greatly, the low temperature exhaust heat for industries such as building materials, metallurgy, chemical industry reclaims and provides better technological means and equipment.Meanwhile, this technology can also be generalized to (as geothermal power, solar energy and biomass energy) in renewable energy power generation equipment, provides novel technical method for utilizing renewable energy power generation.
The unit of original application, working medium pump is in power frequency oepration at full load state all the time after unit puts into operation, and does not consider because heat source temperature fluctuation causes the change of organic working medium liquid level in vaporizer thus affects evaporation efficiency and operation process.And vaporizer is heat absorption, evaporation one, working medium walks shell side, and hot water walks tube side.Working medium liquid level is too low, and lower than heat exchanger coiled pipe horizontal position, heat exchange efficiency declines; Working medium liquid level is too high, and evaporation area is not enough, and condenser loses liquid, affects heat exchange efficiency equally.
Summary of the invention
For improving the utilization ratio of oil field geothermal water heat energy, the heat of 80 DEG C of geothermal tail water being generated electricity, the utility model proposes a kind of oil field geothermal tail water that utilizes newly and carry out the equipment of dual-circulation screw expansion machine generating, geothermal tail water waste heat is recycled.
The utility model power generating equipment forms like this:
Utilize oil field geothermal tail water to carry out an equipment for dual-circulation screw expansion machine generating, comprise vaporizer, preheater, liquid container, condenser, decompressor, generator and cooling tower; Described power generating equipment is made up of three groups of circulation loops, and circulation loop one is heat supplying loop, and circulation loop two is generating and soft circulation circuit, and circulation loop three is cooling circuits;
Circulation loop one is: the outlet of thermal water source is connected to the pipeline one in vaporizer and preheater by hot water circulating pump and check valve, and the circuit entrance that the outlet of pipeline one is connected to thermal water source by valve again forms circulation loop;
Circulation loop two is: the outlet of the pipeline two in vaporizer and preheater by the entrance of main stop valve connecting screw rod decompressor, decompressor drive electrical generators running generating, the outlet of decompressor connects the pipeline one in condenser by valve; The outlet of the pipeline one of condenser connects liquid container, and what the outlet of liquid container was connected to pipeline two in vaporizer and preheater by working medium pump and check valve enters interruption-forming circulation loop;
Circulation loop three is: the outlet of the pipeline two in condenser is connected to the entrance of cooling tower by valve, and what the outlet of cooling tower was connected to pipeline two in condenser by valve, cooling waterpump and check valve enters interruption-forming circulation loop.
In circulation loop two, between the entrance of the outlet of the pipeline two in vaporizer and the pipeline one of condenser, a bypass tube and solenoid valve are added.
Vaporizer, preheater, condenser are all heat transmission equipments of shell of pipe type.
Working medium pump, hot water circulating pump, cooling waterpump are equipped with frequency conversion facility.
Twin-screw expander is equipped with tachometer of measuring, and sets automatic early-warning upper and lower, the upper limit is set to 1700r/min, and lower limit is set to 1000r/min.
The utility model is recycled geothermal tail water waste heat by dual-circulation screw expansion machine generation technology, produces high-grade electric energy.Adopt organic working medium as working medium and the low temperature exhaust heat heat exchange of thermodynamic cycle, after organic working medium heat absorption, produce high pressure steam, promote double-work medium decompressor 10 drive electrical generators and generate electricity.This is that conventional power generation usage technology can not be accomplished (conventional power generation usage requires that heat source temperature is more than 350 DEG C), thus widened the residual heat resources scope that can reclaim generating, the cryogenic waste heat resource for industries such as building materials, metallurgy, chemical industry reclaims and provides technological means and equipment.
The utility model has the advantages that:
Be applicable to various working medium.Screw expansion motor is the heat power machine that Now Domestic uniquely can be applicable to superheated vapor, saturated vapour, steam-water twin phases wet vapor and hot water outward simultaneously, and it is also applicable to low temperature organic working medium.
Not high to working medium quality requirements.Screw expansion motor is applicable to the fluid containing salt crust, is not afraid of fouling and pollution medium, and energy scale removal is self-cleaning; The residue dirt of failing to remove can play the effect reducing gap, lower leakage loss, thus is conducive to improving unit efficiency.
Be suitable for Heat-Source Parameters wide fluctuations.Screw expansion motor is in thermal source pressure, temperature and flow wide fluctuations situation, and internal efficiency is substantially constant, can keep set steady, safe operation.
Operation is simple.Not warming-up, not jiggering when screw expansion motor runs, direct red switch starts, simple to operate, can not cause the work safety accidents such as driving, can keep set steady, safe operation.
Maintenance and Repair are convenient.Screw expansion motor component are few, and easily, for a long time without the need to overhaul (more than 10 years), normal annual light maintenance is safeguarded, overhauls simple and convenient, does not need special maintenance technician in maintenance.
Structure is simply installed easily.Generator unit structure is simple, it is little to take up an area, highly versatile, can complete machine dress and mobile, the feature of suitable industrial exhaust heat and gas-to electricity.
Adopt permanent-magnet eddy current Flexible Transmission technology, achieve the non contact transmission of torque between source motivation to load because without physical connection, the mechanical vibration caused by connection precision and noise reduce greatly.
The power equipment of the utility model generator set is twin-screw expander, and it is a kind of full mobilization force equipment of positive displacement, can adapt to superheated vapor, saturated vapour, steam-water twin phases and hot water working medium.The utility model is for development of new, efficiently low-temperature waste heat power generation equipment, and improve China's energy utilization rate, energy-saving and emission-reduction, protection of the environment, all has great importance.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present utility model.
Wherein: hot water circulating pump 1, vaporizer 2, preheater 3, working medium pump 4, liquid container 5, cooling waterpump 6, condenser 7, main stop valve 8, solenoid valve 9, decompressor 10, generator 11, cooling tower 12.
Embodiment
Below in conjunction with Fig. 1, the utility model is described further.
The utility model is a kind of equipment utilizing oil field geothermal tail water to carry out the generating of dual-circulation screw expansion machine, and this equipment comprises thermal water source, vaporizer 2, preheater 3, liquid container 5, condenser 7, decompressor 10, generator 11 and cooling tower 12.Described power generating equipment is made up of three groups of circulation loops.Circulation loop one is heat supplying loop, and circulation loop two is generating and soft circulation circuit, and circulation loop three is cooling circuits.Wherein, circulation loop one is: the outlet of thermal water source is connected to the pipeline one in vaporizer 2 and preheater 3 by hot water circulating pump 1 and check valve, and the circuit entrance that the outlet of pipeline one is connected to thermal water source by valve again forms circulation loop.Circulation loop two is: the outlet of the pipeline two in vaporizer 2 and preheater 3 is by the entrance of main stop valve 8 connecting screw rod decompressor 10, and decompressor 10 drive electrical generators 11 running generating, the outlet of decompressor 10 connects the pipeline one in condenser 7 by valve.The outlet of the pipeline one of condenser 7 connects liquid container 5, and what the outlet of liquid container 5 was connected to pipeline two in vaporizer 2 and preheater 3 by working medium pump 4 and check valve enters interruption-forming circulation loop.Vaporizer 2 outlet vapor is close to saturation state.Liquid container 5 under condenser 7 can ensure that condensed fluid is drained in time, does not occupy heat transfer space.Between the entrance of the outlet of the pipeline two in vaporizer 2 and the pipeline one of condenser 7, added a bypass tube and solenoid valve 9, its effect is bypass screw expander 10, can reduce rapidly decompressor 10 two ends pressure reduction, for the safe operation of unit is given security.During decompressor 10 driving, bypass solenoid valve 9 opened automatically by control apparatus.Bypass solenoid valve 9 is open in usual, access electrical interface together with working medium pump 4, and when power is off, solenoid valve 9 is opened and bypass is opened.Circulation loop three is: the outlet of the pipeline two in condenser 7 is connected to the entrance of cooling tower 12 by valve, and what the outlet of cooling tower 12 was connected to pipeline two in condenser 7 by valve, cooling waterpump 6 and check valve enters interruption-forming circulation loop.
Allly be provided with in the equipment of pipeline one and pipeline two above-mentioned, the flow direction of the pipeline one in each equipment and the fluid in pipeline two is all contrary.
This equipment has the heat transmission equipment of three shell of pipe type, is flooded evaporator 2, preheater 3, condenser 7 respectively.Wherein preheater 3 can ensure that liquid refrigerant has enough sensible heats to absorb, and vaporizer 2 heat exchange efficiency of full-liquid type is high, has higher evaporating temperature, and working medium pressure drop is less and evaporating temperature is even.
Working medium pump 4, hot water circulating pump 1, cooling waterpump 6 are equipped with frequency conversion facility, adopt VFC.By adjusting the frequency of pump, change is exerted oneself.
The important designing points of the utility model is also: on vaporizer 2, be provided with analog amount fluid level transmitter; Analog amount fluid level transmitter accurately can show evaporation liquid level and send signal to control system, control system compares with setting value according to level parameter signal, by the frequency conversion facility on working medium pump, working medium liquid level is regulated, control the liquid measure that organic working medium enters vaporizer 2 in real time.Described analog amount fluid level transmitter and control system are prior art, no longer describe in detail in this specification.
Working procedure of the present utility model is:
The high-temperature residual heat hot water that thermal water source exports is by hot water circulating pump 1, systems generate electricity medium is organic working medium, high-temperature residual heat enters preheater 3 and vaporizer 2 carries out heat exchange with power generation medium, the high-pressure gaseous organic matter that vaporizer 2 produces enters the import of full stream low-temperature electricity-generating unit twin-screw expander 10, expansion work also promotes twin-screw expander 10 and operates, the low-pressure gas-liquid two-phase organic working medium of discharging afterwards enters condenser 7, under the effect of cooling waterpump 6, low-temperature cooling water enters in condenser 7 and cools organic working medium for liquid, afterwards through working medium pump 6, liquid power generation medium is sent in preheater 3 and vaporizer 2, continue the heat drawing waste heat, twin-screw expander 10 is towing generator generating while running, and the higher temperatures cooling water that condenser 7 is discharged delivers to cooling tower 12 through cooling waterpump 6, recycles.
After thermal source enters vaporizer 2, can, by regulating working medium pump frequency or bypass aperture manual tune twin-screw expander 10 rotating speed, making it raise speed gradually from small to large, preventing that raising speed is too fast to be caused driving and cause generator to damage.
Twin-screw expander 10 is equipped with tachometer of measuring, and sets automatic early-warning upper and lower, the upper limit is set to 1700r/min, and lower limit is set to 1000r/min.Screw machine driving opens bypass automatically.
Solenoid valve 9 in bypass is recloseres open in usual, its should together with working medium pump 4 access electrical interface, when power is off, solenoid valve is opened and bypass is opened.
Before grid-connected, carry out rotation speed control program, safety during to ensure generator connecting in parallel with system.Tach signal takes from screw rod shaft tachogenerator as regulating parameter, adopts PID shaping modes in parallel, controls the aperture of electric control valve, thus ensures that screw expansion generator set runs by the stabilization of speed of setting.After grid-connected, motor speed fluctuates with mains frequency, and the impact of fluid work done on unit shows as the size of power stage.Adopt RS-485 communication acquisition generator operating condition parameter, using generator 11 power stage feedback as regulating parameter.Adopt PID shaping modes in parallel, control the aperture of electric control valve, thus ensure the output of the power of the assembling unit.
In low temperature exhaust heat field, adopt organic working medium (ORC) as working medium and less than the 90 DEG C low-temperature water heating heat exchange of thermodynamic cycle, after organic working medium heat absorption, produce high pressure steam, promote double-work medium decompressor drive electrical generators and generate electricity.This is that conventional electric power generation technology can not be accomplished (conventional electric power generation requires that heat source temperature is more than 350 DEG C), thus widened the residual heat resources scope that can reclaim generating greatly, the low temperature exhaust heat for industries such as building materials, metallurgy, chemical industry reclaims and provides better technological means and equipment.Meanwhile, this technology can also be generalized to (as geothermal power, solar energy and biomass energy) in renewable energy power generation equipment, provides novel technical method for utilizing renewable energy power generation.
Claims (5)
1. utilize oil field geothermal tail water to carry out an equipment for dual-circulation screw expansion machine generating, comprise vaporizer (2), preheater (3), liquid container (5), condenser (7), decompressor (10), generator (11) and cooling tower (12); It is characterized in that: described power generating equipment is made up of three groups of circulation loops, and circulation loop one is heat supplying loop, circulation loop two is generating and soft circulation circuit, and circulation loop three is cooling circuits;
Circulation loop one is: the outlet of thermal water source is connected to the pipeline one in vaporizer (2) and preheater (3) by hot water circulating pump (1) and check valve, and the circuit entrance that the outlet of pipeline one is connected to thermal water source by valve again forms circulation loop;
Circulation loop two is: the outlet of the pipeline two in vaporizer (2) and preheater (3) is by the entrance of main stop valve (8) connecting screw rod decompressor (10), decompressor (10) drive electrical generators (11) running generating, the outlet of decompressor (10) connects the pipeline one in condenser (7) by valve; The outlet of the pipeline one of condenser (7) connects liquid container (5), and what the outlet of liquid container (5) was connected to pipeline two in vaporizer (2) and preheater (3) by working medium pump (4) and check valve enters interruption-forming circulation loop;
Circulation loop three is: the outlet of the pipeline two in condenser (7) is connected to the entrance of cooling tower (12) by valve, and what the outlet of cooling tower (12) was connected to pipeline two in condenser (7) by valve, cooling waterpump (6) and check valve enters interruption-forming circulation loop.
2. power generating equipment according to claim 1, it is characterized in that: in circulation loop two, between the entrance of the outlet of the pipeline two in vaporizer (2) and the pipeline one of condenser (7), a bypass tube and solenoid valve (9) are added.
3. power generating equipment according to claim 1, is characterized in that: vaporizer (2), preheater (3), condenser (7) are all heat transmission equipments of shell of pipe type.
4. power generating equipment according to claim 1, is characterized in that: (6) are equipped with frequency conversion facility for working medium pump (4), hot water circulating pump (1), cooling waterpump.
5. power generating equipment according to claim 1, is characterized in that: (10) are equipped with tachometer of measuring to twin-screw expander, and set automatic early-warning upper and lower, and the upper limit is set to 1700r/min, and lower limit is set to 1000r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420713031.7U CN204267119U (en) | 2014-11-25 | 2014-11-25 | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420713031.7U CN204267119U (en) | 2014-11-25 | 2014-11-25 | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267119U true CN204267119U (en) | 2015-04-15 |
Family
ID=52801991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420713031.7U Expired - Fee Related CN204267119U (en) | 2014-11-25 | 2014-11-25 | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267119U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355270A (en) * | 2017-07-25 | 2017-11-17 | 航天推进技术研究院 | A kind of the ORC generating sets and adjusting method of adaptive thermal source change |
| CN109931234A (en) * | 2019-03-26 | 2019-06-25 | 上海交通大学 | Low temperature geothermal energy magnetic floating generator in overbottom pressure accumulation energy type |
| CN110043432A (en) * | 2019-04-16 | 2019-07-23 | 上海交通大学 | Middle low temperature geothermal energy magnetic floating generator and method |
| CN110985317A (en) * | 2019-12-20 | 2020-04-10 | 陈烨 | Geothermal power generation device based on acid dew point |
| CN113864142A (en) * | 2021-09-01 | 2021-12-31 | 江阴弘旭环保电力科技有限公司 | Geothermal energy, waste heat and photo-thermal coupling power generation system |
-
2014
- 2014-11-25 CN CN201420713031.7U patent/CN204267119U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355270A (en) * | 2017-07-25 | 2017-11-17 | 航天推进技术研究院 | A kind of the ORC generating sets and adjusting method of adaptive thermal source change |
| CN109931234A (en) * | 2019-03-26 | 2019-06-25 | 上海交通大学 | Low temperature geothermal energy magnetic floating generator in overbottom pressure accumulation energy type |
| CN110043432A (en) * | 2019-04-16 | 2019-07-23 | 上海交通大学 | Middle low temperature geothermal energy magnetic floating generator and method |
| CN110985317A (en) * | 2019-12-20 | 2020-04-10 | 陈烨 | Geothermal power generation device based on acid dew point |
| CN113864142A (en) * | 2021-09-01 | 2021-12-31 | 江阴弘旭环保电力科技有限公司 | Geothermal energy, waste heat and photo-thermal coupling power generation system |
| CN113864142B (en) * | 2021-09-01 | 2024-07-23 | 南京弘旭热能科技有限公司 | Geothermal energy and waste heat and photo-thermal coupling power generation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104314631A (en) | System for generating power in non heating season by low-temperature nuclear heat reactor and working method of system | |
| CN204267119U (en) | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating | |
| CN204267120U (en) | Adopt the low-temperature waste heat power generation equipment of frequency conversion automatic control technology | |
| CN202869079U (en) | Condensate water heating device utilizing power plant circulating cooling water waste heat recovered by jet-type heat pump | |
| CN202868822U (en) | Power plant flue gas waste heat recovering device utilizing jet-type heat pump | |
| CN110078904B (en) | Polyester esterification steam waste heat utilization method and device | |
| CN210237656U (en) | Power generation device for recycling waste heat of blast furnace slag flushing water | |
| CN202938399U (en) | Novel waste heat recovery and heat supply system | |
| CN104481613B (en) | Power generation system of double-drive generator for reheating cycle utilization of low-grade heat energy | |
| CN101539036A (en) | Device for generating power from flue gas waste heat of aluminum cells on the basis of organic Rankine cycle | |
| CN101769179A (en) | Environment-friendly energy conservation and emission reduction system | |
| CN104481619A (en) | Rankine cycle power generation system capable of realizing efficient utilization of heat energy | |
| CN104454329A (en) | External heat type engine and implementation method thereof | |
| CN104329130A (en) | High heat efficiency medium and low temperature waste heat organic Rankin power circulating power generator system | |
| CN107060928B (en) | System and method for supplying electric energy and heat energy by utilizing process waste heat | |
| CN203685328U (en) | Non-constant waste heat two-stage organic Rankine cycle power generation system | |
| CN105756736A (en) | Low-temperature heat source turbine power generation device and organic dual-circulation method based on device | |
| CN204098972U (en) | Adopt the low temperature water power generation system of extraction cycle technology | |
| CN206440032U (en) | A kind of recovery Steam Turbine exhaust steam residual heat system based on heat pump | |
| CN104612918A (en) | Normal pressure type solar combined heat and power generation system | |
| CN202869080U (en) | Device for recovering low-pressure steam and cooling water waste heat of waste heat power generation system | |
| CN105201576A (en) | Combined system capable of generating power and supplying heat by recycling exhaust gas waste heat of oil field diesel engine based on single-screw expander | |
| CN202349992U (en) | System for recovering steam exhaust residual heat of power station and heating boiler feed water by using absorptive heat pump | |
| CN204267121U (en) | Adopt the low temperature water power generating equipment of preheating technology | |
| CN204371436U (en) | The Lang Ken cycle generating system of heat energy efficiency utilization can be realized |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Haiyan Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20191125 |