CN205025513U - Natural gas pipe network pressure can retrieve comprehensive utilization system - Google Patents
Natural gas pipe network pressure can retrieve comprehensive utilization system Download PDFInfo
- Publication number
- CN205025513U CN205025513U CN201520598990.3U CN201520598990U CN205025513U CN 205025513 U CN205025513 U CN 205025513U CN 201520598990 U CN201520598990 U CN 201520598990U CN 205025513 U CN205025513 U CN 205025513U
- Authority
- CN
- China
- Prior art keywords
- natural gas
- outlet
- import
- power generation
- carrying agent
- 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.)
- Withdrawn - After Issue
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Abstract
The utility model provides a natural gas pipe network pressure can retrieve comprehensive utilization system, system include pressure energy power generation subsystem, secondary refrigerant subsystem and system ice concurrent heating subsystem, and pressure energy power generation subsystem comprises unit doublestage inflation power generation facility, preheater, interheaters and post heating ware etc. And the secondary refrigerant subsystem comprises secondary refrigerant pump, secondary refrigerant and secondary refrigerant storage tank, and system ice concurrent heating subsystem comprises ice machine, heat pump device, icebox etc.. The utility model provides a natural gas pipe network pressure can retrieve comprehensive utilization system, novelty ground combines heat pump and double expansion electricity generation, natural gas double expansion has improved the natural gas temperature behind every grade of inflation, the temperature of the heat source of natural gas concurrent heating is reduced technical difficulty with the expander, natural gas pressure energy generated energy has been increased, the problem of natural gas direct expansion's preliminary treatment problem or natural gas temperature low excessively is solved, realize electricity generation of natural gas inflation and cold energy and retrieved the comprehensive utilization of making ice.
Description
Technical field
The utility model relates to differential pressure power generation and the cold energy recycle technical field at natural gas pressure regulating station, is specially a kind of natural gas pipe network pressure energy and reclaims utilization system.
Background technique
The provincial gas trunklines design pressure of China is 6.3MPa, and downstream City-level design of pipe networks pressure is 0.4MPa.Between High Pressure Gas Transmitting Pipeline and urban gas pipe network along the line, pressure reduction is comparatively large, needs decompression with the requirement meeting downstream user.Voltage regulating mode many employings isenthalpic throttling mode of current rock gas, this process mechanical can export, but there is temperature drop, causes out-station temperature lower than the feed air temperature of standard-required (>5 DEG C).Especially in the season that ambient temperature is lower, the temperature after throttling even reaches-20 DEG C, releases a large amount of cold energy, produces frost plug pipeline in valve, there is larger potential safety hazard to downstream urban pipe network.Traditional solution is heated pressurized gas in advance by burning boiler hot water heat exchanger or electric-heating belt.This not only needs to consume combustion gas or electric energy, simultaneously the serious waste of build-up of pressure energy.
The utility model patent being CN103334891A in order to the pressure energy Authorization Notice No. reclaimed in gas distributing system discloses a kind of natural gas pressure regulating formula electricity generating device, and this model utility adopts turbine device to reclaim pressure energy of natural gas generating.The technique that this model utility proposes, does not both consider the recycling of cold energy, discharges the problems such as equipment blocking that a large amount of cold energy causes and corrosion after not solving rock gas direct expansion yet.
And the utility model patent that Authorization Notice No. is CN203362233U discloses a kind of screw expansion motor power generation system utilizing natural valve station pressure energy, this model utility adopts screw expander to reclaim the expansion work generating of rock gas, compared with the utility model patent being CN103334891A with Authorization Notice No., the solution of the problems such as equipment blocking that a large amount of cold energy causes and corrosion is discharged after proposing rock gas direct expansion, namely by heat exchanger, the rock gas concurrent heating after expansion is risen again, but concurrent heating mode like this needs to consume certain energy, and cold energy is directly wasted, and the utility model patent that Authorization Notice No. is CN103410574A discloses the generating of a kind of natural gas pressure difference and cold recovery system and utilizes its generating and method of cold recovery, this model utility adopts screw expander to reclaim the expansion work generating of rock gas, and propose equally and utilize heat exchanger that the rock gas after expanding is carried out to concurrent heating and rises again, but be that the utility model patent of CN203362233U is the same with Authorization Notice No.,, there is the loss of the energy equally in the cold energy direct loss after rock gas expands.
In addition, Authorization Notice No. is that the utility model patent of CN203430574U discloses a kind of device utilizing mini gas pipe network pressure energy to generate electricity, this model utility proposes to adopt small gas decompressor to reclaim pressure energy of natural gas generating, realizes the personal function of small-power generating.Rock gas after expansion is stablized gas pressure by pressure and temp balace weight and is risen again to rock gas.Although it is personal that this model utility Appropriate application pressure energy of natural gas realizes generating, because generated output is less, only at 1 ~ 5kW, be not suitable for the natural gas pressure regulating place that flow is larger.Meanwhile, this model utility exists natural gas cold energy equally cannot reclaim problem, and after the rock gas after expanding regulated by pressure and temp balace weight, rock gas is risen again limited extent, and the cold energy of release of expanding still can cause equipment to block and etching problem.
Similarly, Authorization Notice No. be the utility model patent of CN104088605A disclose a kind of based on pressure energy generating and heat pump rock gas well head heat throttle system, this model utility adopts decompressor generator set to substitute traditional throttling pressure adjusting device, utilize expansion power generator that the pressure energy in the rock gas of gas well extraction is converted to electric energy, first cryogenic natural gas heating after expansion utilizes amount of heat that natural gas temperature part is recovered by air preheater, again by electrical energy drive heat pump that expansion power generation unit is produced, by reheater, the heat of heat pump is used for heating the rock gas after air preheater, make the heated by natural gas after expansion step-down to the problem sent outside needed for gathering line.Although the technique that this model utility proposes saves the energy of heated by natural gas, and after realizing expansion by heat pump system, the concurrent heating of rock gas is risen again, and does not still consider the recycling of cold energy.
And the utility model patent that Authorization Notice No. is CN101943323A discloses a kind of natural gas pressure difference energy recovery process, this model utility proposes a kind of natural gas pipeline pressure difference energy recovery process, this model utility has two kinds of method pressure recovery energy, pressure energy is converted into mechanical work by gas-turbine by the first, not only can drive power equipment but also can the direct generation of electricity; It two is utilize the pressure energy of pressurized gas to freeze after expansion decompression, can production LNG Liquefied natural gas, and produced cryogen can be utilized again to carry out generating electricity, building freezer or air conditioner refrigerating etc.The technique that this model utility proposes, although refer to cold energy recycle, but single for the Land use systems of pressure energy, mechanical energy and cold energy cannot be recycled simultaneously, and after not solving rock gas direct expansion, discharge the problems such as equipment blocking that a large amount of cold energy causes and corrosion.
In order to fully utilize pressure energy of natural gas, Authorization Notice No. is that the utility model patent of CN203847188U discloses a kind of natural gas pressure regulating station complementary energy synthesis and utilizes system, this model utility adopts the pressure energy in expansion power generation unit recovery rock gas, and utilizes cryogenic natural gas cold energy generation and recovery section cold energy by low-temperature electricity-generating unit.Meanwhile, by heat exchanger reclaim further low-temperature electricity-generating unit utilize after cold energy, the cold cooling user of recovery or directly to environmental emission.Compared with above-mentioned utility model patent, effectively make use of the cold energy of rock gas, but because rock gas is without pretreatment, the direct expansion of expansion power generation unit is adopted to cause equipment to block, to corrode and denude the generation of phenomenon at normal temperatures, and the generating efficiency of low-temperature electricity-generating unit is substantially about 10%, cost of investment is large, and cold energy use rate is low.
And the utility model patent that Authorization Notice No. is CN103362579A discloses a kind of the double expansion electricity generating device and the method that reclaim cold energy of liquefied natural gas, this model utility utilizes two stage turbine decompressor differential pressure power generation mode, reclaim the pressure energy of natural gas after liquefaction natural gas via supercharging and vaporization, and using ethene or ethane as working medium, reclaim cold energy of liquefied natural gas.The main purpose adopting double expansion is can high efficiente callback cold energy.Based on the expansion power generation technique that LNG Liquefied natural gas proposes, expansion power generation limited efficiency is in the grade height of liquefied natural gas vaporization thermal source.
Model utility content
For the problems referred to above, the utility model provides a kind of natural gas pipe network pressure energy and reclaims utilization system, by cold carrying agent subtense angle, pressure energy power generation sub-system and ice making concurrent heating subtense angle are combined, comprehensive utilization is reclaimed to realize pressure energy, utilize classification concurrent heating mode, while improving rock gas expansion power generation amount, high efficiente callback natural gas cold energy is for the production of commodity ice or carry cooling needs.
The technical solution adopted in the utility model is, build a kind of pressure energy and reclaim utilization system, said system comprises pressure energy power generation sub-system, cold carrying agent subtense angle and ice making concurrent heating subtense angle, is connected between pressure energy power generation sub-system and ice making concurrent heating subtense angle by cold carrying agent subtense angle.
Above-mentioned pressure energy power generation sub-system comprises pre-treater, its import is connected with high pressure gas pipeline, its outlet is connected with the suction port of original natural gas preheater, natural gas preheater air outlet first valve is divided into two-way, second valve of leading up to is connected with the import of original natural gas pressure regulating device, and the outlet of natural gas pressure regulating device is connected with downstream line by the 3rd valve, another road is connected with preheater suction port, preheater air outlet is connected with the high pressure stage suction port of the single machine two-stage expansion power generation device driving generator operation, the air outlet of single machine two-stage expansion power generation device high pressure stage is connected with the suction port of intermediate heater, the air outlet of intermediate heater is connected with the suction port of single machine two-stage expansion power generation device low pressure stage, the air outlet of single machine two-stage expansion power generation device low pressure stage is connected with the suction port of post-heater, the air outlet of post-heater is connected with oil separator suction port, oil separator air outlet is connected with gas downstream pipe network by the 5th valve.
Ice making concurrent heating subtense angle comprises condenser, condenser refrigerant import exports with heat pump system and is connected, condenser refrigerant outlet is connected with the import of liquid-storage container, the refrigerant outlet of liquid-storage container is connected with icebox refrigerant inlet with ice making machine import, ice maker refrigerating agent outlet respectively, ice maker refrigerating agent outlet is connected with the import of gas-liquid separator with icebox refrigerant outlet simultaneously, and the outlet of gas-liquid separator is connected with heat pump system import.
Cold carrying agent subtense angle comprises cold carrying agent storage tank, its import exports with the cold carrying agent of post-heater with preheater, intermediate heater respectively and is connected, the outlet of cold carrying agent storage tank is connected with the import of condenser cold carrying agent, and the outlet of condenser cold carrying agent is connected with the cold carrying agent import of post-heater with preheater, intermediate heater respectively.
Further, above-mentioned preheater, intermediate heater and post-heater are naturally make leave with rage outside pipe, and cold carrying agent is taken a walk shell-and-plate in pipe or shell-and-tube heat exchanger.Further, single machine two-stage expansion power generation device is single machine two-stage screw bolt expansion power generation unit.
Further, above-mentioned condenser is tubular heat exchanger.
Further, be also provided with oil pump and be connected between above-mentioned oil separator lubricating oil outlet with single machine two-stage expansion power generation device high pressure stage lubricating oil inlet, oil separator adopts two-stage to be separated.
Further, also coolant pump is provided with between above-mentioned cold carrying agent storage tank cold carrying agent outlet and the import of condenser cold carrying agent.
Further, above-mentioned heat pump system adopts frequency conversion type compressor.
Further, above-mentioned ice making machine is ice shaver or tube ice machine.
Further, above-mentioned icebox is the automatic ice bank of combined type.
Compared with prior art, a kind of pressure energy of natural gas provided by the utility model reclaims utilization system, has the following advantages:
1, introduce heat pump techniques innovatively, on the one hand, the heat of heat pump fluid is all used for heat cold carrying agent, by cold carrying agent, concurrent heating is carried out to the forward and backward rock gas of expansion again, greatly can improve rock gas expansion power generation amount, meanwhile, also ensure the normal expansion generating of second level rock gas; On the other hand, after heat pump fluid and cold carrying agent heat exchange, reclaimed rock gas that cold carrying agent absorbs expand after cold energy, low temperature cold carrying agent, as the cooling liquid of condenser for ice-maker, effectively can reduce the energy consumption of ice making machine.
2, single machine two-stage expansion power generation unit is adopted to substitute single-stage expansion generator set for reclaiming natural gas pipe network pressure energy innovatively, to cause the shaft seal difficult problem of expansion unit when solving single-stage expansion because expansion-pressure ratio is excessive, also solve single-stage expansion simultaneously and cause that rock gas temperature drop is excessive to be needed to be preheated to higher temperature to rock gas and cannot reclaim cold energy or prevent rock gas hyrate under low-temperature condition from separating out and need to carry out pretreated problem to rock gas.
3, utilize cold carrying agent as cold Transfer Medium, the cold energy after rock gas expansion is reclaimed in classification, also ensure that natural gas pressure regulating station and pressure energy of natural gas reclaim the security and stability of utilization system simultaneously.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Set forth a lot of detail in the following description so that fully understand the utility model.But the utility model can be much different from alternate manner described here to implement, those skilled in the art can when doing similar popularization without prejudice to when the utility model intension, and therefore the utility model is by the restriction of following public specific embodiment.
Below in conjunction with drawings and Examples, embodiment of the present utility model is described further.
embodiment 1
In the present embodiment, by reference to the accompanying drawings, structure of the present utility model is described in detail.
Refer to accompanying drawing, a kind of natural gas pipe network pressure energy that the utility model provides reclaims utilization system, the technical solution adopted in the utility model is, build a kind of pressure energy and reclaim utilization system, system comprises pressure energy power generation sub-system, cold carrying agent subtense angle and ice making concurrent heating subtense angle, is connected between pressure energy power generation sub-system and ice making concurrent heating subtense angle by cold carrying agent subtense angle.
Pressure energy power generation sub-system comprises pre-treater 1, its import is connected with high pressure gas pipeline, its outlet is connected with the suction port of original natural gas preheater 2, natural gas preheater 2 air outlet first valve 19 is divided into two-way, second valve 20 of leading up to is connected with the import of original natural gas pressure regulating device 3, and the outlet of natural gas pressure regulating device 3 is connected with downstream line by the 3rd valve 21, another road is connected with preheater 6 suction port, preheater 6 air outlet is connected with the high pressure stage suction port of the single machine two-stage expansion power generation device 7 driving generator 8 to operate, the air outlet of single machine two-stage expansion power generation device 7 high pressure stage is connected with the suction port of intermediate heater 15, the air outlet of intermediate heater is connected with the suction port of single machine two-stage expansion power generation device 7 low pressure stage, the air outlet of single machine two-stage expansion power generation device 7 low pressure stage is connected with the suction port of post-heater, the air outlet of post-heater is connected with oil separator suction port, oil separator air outlet is connected with gas downstream pipe network by the 5th valve 23.
Ice making concurrent heating subtense angle comprises condenser 11, condenser refrigerant import exports with heat pump system 12 and is connected, condenser refrigerant outlet is connected with the import of liquid-storage container 18, the refrigerant outlet of liquid-storage container 18 is connected with icebox 18 refrigerant inlet with ice making machine 17 import, ice making machine 17 refrigerant outlet respectively, ice making machine 17 refrigerant outlet is connected with the import of gas-liquid separator 14 with icebox 18 refrigerant outlet simultaneously, and the outlet of gas-liquid separator 14 is connected with heat pump system 12 import.
Cold carrying agent subtense angle comprises cold carrying agent storage tank 8, its import exports with the cold carrying agent of post-heater 4 with preheater 6, intermediate heater 15 respectively and is connected, cold carrying agent storage tank 8 outlet is connected with the import of condenser 11 cold carrying agent, and the outlet of condenser 11 cold carrying agent is connected with the cold carrying agent import of post-heater 4 with preheater 6, intermediate heater 15 respectively.
As the preferred implementation in this enforcement, preheater 6, intermediate heater 15 and post-heater 4 is made leave with rage outside pipe for natural, cold carrying agent is taken a walk shell-and-plate in pipe or shell-and-tube heat exchanger, and the postpone of preheater 6 cloth, raw natural gas preheater can be substituted completely, thus reduce rock gas concurrent heating energy consumption.
As the preferred implementation in this enforcement, single machine two-stage expansion power generation device 7 is single machine two-stage screw bolt expansion power generation unit.
As the preferred implementation in this enforcement, condenser 11 is tubular heat exchanger.
As the preferred implementation in this enforcement, be also provided with oil pump 13 and be connected between oil separator 5 lubricating oil outlet with single machine two-stage expansion power generation device 7 high pressure stage lubricating oil inlet, oil separator adopts two-stage to be separated, and greatly reduces rock gas oil content.
As the preferred implementation in this enforcement, between the outlet of cold carrying agent storage tank 8 cold carrying agent and the import of condenser 11 cold carrying agent, be also provided with coolant pump 10.
As the preferred implementation in this enforcement, heat pump system 12 adopts frequency conversion type compressor, when natural gas transport amount fluctuates, reduces energy consumption during variable working condition.
As the preferred implementation in this enforcement, ice making machine 17 is ice shaver or tube ice machine.
As the preferred implementation in this enforcement, icebox 18 is the automatic ice bank of combined type, when ice output is had more than needed, as the place that ice stores.
Embodiment 2
In the present embodiment, by reference to the accompanying drawings, embodiment of the present utility model is described in detail.
The technical program is applied to natural gas pressure regulating station usually.Before this technological scheme is implemented, need to understand gas component, flow, the data such as pressure, temperature before and after pressure regulation, and according to the rated capacity of the data selection rock gas expansion power generation unit understood; According to expansion power generation machine set technology parameter, determine ice making concurrent heating subtense angle scale and cold carrying agent subtense angle type selecting.
As shown in the figure, the utility model provides a kind of natural gas pipe network pressure energy to reclaim utilization system, comprise pressure energy power generation sub-system, cold carrying agent subtense angle and ice making concurrent heating subtense angle, be connected by cold carrying agent subtense angle between pressure energy power generation sub-system and ice making concurrent heating subtense angle.
From the rock gas that upstream high pipe network transports, enter after natural gas preheater 2 down stream low pressure natural gas temperature enables lower than dew point temperature after pre-treater 1 pretreatment, be divided into two-way afterwards, one tunnel enters after about preheater 6 concurrent heating to 5 DEG C, the high pressure stage entering single machine two-stage expansion power generation device 7 drives generator 8 to operate and pressure energy is converted into electric energy, after high pressure stage is expanded to intermediate pressure about 1.5MPa, rock gas enters intermediate heater 15 concurrent heating and rises again after about 5 DEG C, the low pressure stage entering single machine two-stage expansion power generation device 7 drives generator 8 electric energy again, after rock gas after low pressure stage expands to enter in post-heater 4 concurrent heating to 5 again DEG C, enter in oil separator 5 and Oil-gas Separation occurs, lubricant oil after separation is recycled to single machine two-stage expansion power generation device 7 by oil pump 13, and through twice expansion, the rock gas of three grades of concurrent heatings gets back to gas downstream pipe network.
Cold carrying agent from cold carrying agent storage tank 8 out, after coolant pump 10 is pressurizeed, enter condenser 11, the cold carrying agent after heat absorption heats up is transported to natural gas system, enters preheater 6, intermediate heater 15 and post-heater 4 respectively, after promoting the temperature of rock gas, get back to cold carrying agent storage tank 8.
Heat pump system 12 sucks gaseous refrigerant, enters condenser 11 after compression, and to cold carrying agent heat release, condensation of refrigerant becomes liquid, enters cistern 18 and stores.
In the ice making stage, liquid refrigerant out, enters ice making machine 17 and evaporates bottom cistern 18 after throttle valve 24 throttling, then enters gas-liquid separator 14 and is separated, and gaseous refrigerant is together with the return-air backheat pump-unit of icebox 18.
Cold carrying agent subtense angle is as the medium tache of whole system, absorb heat from the refrigeration agent after compression after, enter respectively in preheater 6, intermediate heater 15 and post-heater 4 and concurrent heating is carried out to the forward and backward rock gas of expansion, simultaneously, cold carrying agent is utilized to reclaim cold energy in rock gas and after passing to refrigeration agent, inhale heat release circulation, realize the circulation classification concurrent heating to rock gas and cold energy use for one that completes cold carrying agent; And the refrigeration agent after heat release, absorb the cold of cold carrying agent, enter ice-making system as low-temperature receiver, greatly reduce ice making energy consumption.
Be illustrated below in conjunction with the embody rule of application example to this system:
With natural gas transport amount for 10000Nm
3the voltage regulating station of/h is example.Rock gas Inlet pressure is 3.35MPa gauge pressure, and Outlet pressure is 0.32MPa gauge pressure, rock gas initial temperature 10 DEG C, and after ensureing pressure regulation, temperature remains on more than 5 DEG C, and Isentropic Efficiency of Expansion Machine gets 75%.As calculated, expansion power generation unit reclaims rock gas expansion work and is about 319kW, and the total concurrent heating amount of preheater 6, intermediate heater 15 and post-heater 4 is 417kW.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection domain of the present utility model should define with the utility model claim is as the criterion.
Claims (10)
1. a natural gas pipe network pressure energy reclaims utilization system, described system comprises pressure energy power generation sub-system, cold carrying agent subtense angle and ice making concurrent heating subtense angle, it is characterized in that, be connected by cold carrying agent subtense angle between pressure energy power generation sub-system and ice making concurrent heating subtense angle, described cold carrying agent subtense angle comprises cold carrying agent storage tank (9), its import respectively with preheater (6), intermediate heater (15) is connected with the cold carrying agent outlet of post-heater (4), cold carrying agent storage tank (9) outlet is connected with condenser (11) cold carrying agent import, condenser (11) cold carrying agent outlet respectively with preheater (6), intermediate heater (15) is connected with the cold carrying agent import of post-heater (4).
2. a kind of natural gas pipe network pressure energy according to claim 1 reclaims utilization system, it is characterized in that, described pressure energy power generation sub-system comprises pre-treater (1), its import is connected with high pressure gas pipeline, its outlet is connected with the suction port of original natural gas preheater (2), natural gas preheater (2) air outlet first valve (19) is divided into two-way, the second valve (20) of leading up to is connected with the import of original natural gas pressure regulating device (3), the outlet of natural gas pressure regulating device (3) is connected with downstream line by the 3rd valve (21), another road is connected with preheater (6) suction port, preheater (6) air outlet is connected with the high pressure stage suction port of the single machine two-stage expansion power generation device (7) driving generator (8) to operate, the air outlet of single machine two-stage expansion power generation device (7) high pressure stage is connected with the suction port of intermediate heater (15), the air outlet of intermediate heater is connected with the suction port of single machine two-stage expansion power generation device (7) low pressure stage, the air outlet of single machine two-stage expansion power generation device (7) low pressure stage is connected with the suction port of post-heater, the air outlet of post-heater is connected with oil separator suction port, oil separator air outlet is connected with gas downstream pipe network by the 5th valve (23),
Ice making concurrent heating subtense angle comprises condenser (11); condenser refrigerant import exports with heat pump system (12) and is connected; condenser refrigerant outlet is connected with the import of liquid-storage container (18); the refrigerant outlet of liquid-storage container (18) is connected with icebox (18) refrigerant inlet with ice making machine (17) import, ice making machine (17) refrigerant outlet respectively; ice making machine (17) refrigerant outlet is connected with the import of gas-liquid separator (14) with icebox (18) refrigerant outlet simultaneously, and the outlet of gas-liquid separator (14) is connected with heat pump system (12) import;
Ice making concurrent heating subtense angle comprises condenser (11), condenser refrigerant import exports with heat pump system (12) and is connected, condenser refrigerant outlet is connected with the import of liquid-storage container (18), the refrigerant outlet of liquid-storage container (18) respectively with ice making machine (17) import, ice making machine (17) refrigerant outlet is connected with icebox (18) refrigerant inlet, ice making machine (17) refrigerant outlet is connected with the import of gas-liquid separator (14) with icebox (18) refrigerant outlet simultaneously, the outlet of gas-liquid separator (14) is connected with heat pump system (12) import.
3. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, it is characterized in that, described preheater (6), intermediate heater (15) and post-heater (4) are made leave with rage outside pipe for natural, and cold carrying agent walks shell-and-plate in pipe or shell-and-tube heat exchanger.
4. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, and it is characterized in that, single machine two-stage expansion power generation device (7) is single machine two-stage screw bolt expansion power generation unit.
5. a kind of natural gas pipe network pressure energy according to claim 1 and 2 reclaims utilization system, it is characterized in that, described condenser (11) is walked in pipe for cold carrying agent, and the tubular heat exchanger outside pipe walked by refrigeration agent.
6. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, it is characterized in that, is also provided with oil pump (13) and is connected between oil separator (5) lubricating oil outlet with single machine two-stage expansion power generation device (7) lubricating oil inlet.
7. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, it is characterized in that, is also provided with coolant pump (10) between the outlet of cold carrying agent storage tank (9) cold carrying agent and condenser (11) cold carrying agent import.
8. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, it is characterized in that, described heat pump system (12) adopts frequency-changeable compressor.
9. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, and it is characterized in that, described ice making machine (17) is ice shaver or tube ice machine.
10. a kind of natural gas pipe network pressure energy according to claim 2 reclaims utilization system, and it is characterized in that, described icebox (16) is the automatic ice bank of combined type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598990.3U CN205025513U (en) | 2015-08-11 | 2015-08-11 | Natural gas pipe network pressure can retrieve comprehensive utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598990.3U CN205025513U (en) | 2015-08-11 | 2015-08-11 | Natural gas pipe network pressure can retrieve comprehensive utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205025513U true CN205025513U (en) | 2016-02-10 |
Family
ID=55258053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520598990.3U Withdrawn - After Issue CN205025513U (en) | 2015-08-11 | 2015-08-11 | Natural gas pipe network pressure can retrieve comprehensive utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205025513U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041395A (en) * | 2015-08-11 | 2015-11-11 | 浙江浙能节能科技有限公司 | System for recovering and comprehensively utilizing pressure energy of natural gas pipeline network |
| CN110185506A (en) * | 2019-05-27 | 2019-08-30 | 西南石油大学 | A kind of natural gas pressure regulating station pressure energy utilization system |
-
2015
- 2015-08-11 CN CN201520598990.3U patent/CN205025513U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041395A (en) * | 2015-08-11 | 2015-11-11 | 浙江浙能节能科技有限公司 | System for recovering and comprehensively utilizing pressure energy of natural gas pipeline network |
| CN110185506A (en) * | 2019-05-27 | 2019-08-30 | 西南石油大学 | A kind of natural gas pressure regulating station pressure energy utilization system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105041395A (en) | System for recovering and comprehensively utilizing pressure energy of natural gas pipeline network | |
| CN102967099B (en) | Energy cascade comprehensive utilization method of LNG (liquefied natural gas) cold energy | |
| CN103016152B (en) | Supercritical air energy storage system with novel process | |
| CN101806293B (en) | Integrating and optimizing method for improving generation efficiency of liquefied natural gas cold energy | |
| CN103075250B (en) | Method for generating by graded use of cold energy of liquefied natural gas | |
| CN104863645B (en) | A kind of pipe network pressure energy of natural gas and cold recoverable utilize system | |
| CN202811078U (en) | Ultra-supercritical air energy storage/release system | |
| CN101852529B (en) | Method and device for efficient utilization of pressure energy of natural gas pipeline network | |
| CN104018901B (en) | Natural gas, pressure energy and cold energy combined power generation system | |
| CN103486438B (en) | LNG gasification system based on double-heat-source heat pump | |
| CN105114131A (en) | Integrated device capable of achieving expansion power generation and compression refrigeration through natural gas pressure | |
| CN101245956A (en) | Method for utilizing pressure energy of natural gas | |
| CN107060927A (en) | Waste heat recycling system and its method and power station | |
| CN105444523A (en) | Reliquefaction system and technique for compressing expanded liquified BOG through BOG | |
| CN102778079A (en) | Solar-jet and two-stage compression combined heat pump system | |
| CN102061950A (en) | Device for capturing CO2 from flue gas by ultralow temperature generation joint cryogenic medium-pressure method | |
| CN108005739A (en) | Using the LNG cold energy stepped utilization methods of cold energy generation | |
| CN204827549U (en) | System is utilized to high efficiency that pipe network natural gas pressure energy and cold energy were retrieved | |
| CN105416009B (en) | Power-equipment liquefied gas bottle cooling capacity recovering method | |
| CN210396824U (en) | Natural gas residual pressure cold energy power generation cascade utilization system | |
| CN107044307A (en) | Heat energy utilization dynamical system and new energy motor device | |
| CN204984493U (en) | Utilize electricity generation of natural gas pressure energy inflation and compression refrigeration's integrated device | |
| CN205025513U (en) | Natural gas pipe network pressure can retrieve comprehensive utilization system | |
| CN203585806U (en) | LNG (liquefied natural gas) gasification system based on double-heat-source heat pump | |
| CN108518584A (en) | A kind of high-pressure natural gas pipe network pressure energy recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160210 Effective date of abandoning: 20170616 |