CN203847188U - Complementary energy comprehensive utilization system of natural gas regulator station - Google Patents
Complementary energy comprehensive utilization system of natural gas regulator station Download PDFInfo
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- CN203847188U CN203847188U CN201420243993.0U CN201420243993U CN203847188U CN 203847188 U CN203847188 U CN 203847188U CN 201420243993 U CN201420243993 U CN 201420243993U CN 203847188 U CN203847188 U CN 203847188U
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- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model relates to a complementary energy comprehensive utilization system of a natural gas regulator station. The complementary energy comprehensive utilization system comprises a decompression device and the regulator station, and the output end of the decompression device is connected with the regulator station through a pipe. The complementary energy comprehensive utilization system further comprises an energy-saving unit; the energy-saving unit comprises a power generation system and a cold supply system; a pipe connected with the input end of the decompression device is connected with a pipe connected with the input end of the power generation system; the output end of the power generation system is connected with the input end of the cold supply system through a pipe; a pipe at the output end of the cold supply system is connected with a pipe between the output end of the decompression device and the regulator station. By means of the complementary energy comprehensive utilization system, originally-wasted pressure complementary energy is converted and used, complementary energy recycling and stair comprehensive utilization are achieved, and the pressure energy of the high pressure natural gas is sufficiently recycled and can be further converted into high-quality electric energy and high-quality cold energy. The complementary energy comprehensive utilization system is flexible in control, and the cooling capacity and the generating capacity can be adjusted according to needs.
Description
Technical field
The utility model relates to energy utilization technology field, natural gas pressure regulating station, especially relates to a kind of natural gas pressure regulating station complementary energy synthesis and utilizes system.
Background technique
Urban Gas Distribution Networks comprises transmission and distribution network and the voltage regulating station of city receiving station, Chu Peichang, various pressure level systems.Voltage regulating station is for automatically regulating and stable pipe network pressure.Before delivering to gas point, the high-pressure natural gas transporting from natural gas high pressure pipeline need to require first to carry out step-down according to the supply gas pressure of downstream user conventionally, and this function generally realizes by natural gas pressure regulating station.In this process, by producing very large Pressure Drop, discharge a large amount of energy simultaneously.
Traditional natural gas pressure regulating technique, adopts the regulators such as large-scale reduction valve, and high-pressure natural gas (2.5～4MPa) is carried out to step-down (to 0.3～1.6MPa).Pressure regulation process may adopt single-stage or second voltage regulation, how to realize by regulators such as large-scale reduction valve.Rock gas is approximate in reduction valve sees constant enthalpy pressure drop process as, and pressure energy loses in vain, and as a kind of high-quality energy, pressure energy is not utilized effectively, and has caused the waste of resource.
At present also do not have efficient system to improve the utilization ratio of the energy in natural gas pressure regulating station step-down process.
Model utility content
The technical problem that the utility model solves has been to provide a kind of natural gas pressure regulating station complementary energy synthesis and has utilized system, the utility model is by the pressure complementary energy trans-utilization originally wasting, recovery and the step comprehensive utilization of complementary energy are realized, not only fully reclaim the pressure energy of high-pressure natural gas, also pressure energy is converted into high-grade energy electric energy and cold energy, increase the utilization ratio of the energy, effectively reduced energy consumption for cooling, reduced environmental pollution.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of natural gas pressure regulating station complementary energy synthesis utilizes system, comprises decompressor and voltage regulating station, and the output terminal of described decompressor is connected with described voltage regulating station by pipeline; Also comprise power saving unit; The pipeline that the pipeline that the input end of described decompressor connects is connected with the input end of described power saving unit connects; Pipeline between the output terminal of described decompressor and described voltage regulating station is connected with the pipeline of the output terminal of described power saving unit; Described power saving unit comprises power generation system and cold supply system; The pipeline that the pipeline that the input end of described decompressor connects is connected with the input end of described power generation system connects; The output terminal of described power generation system is connected by pipeline with the input end of described cold supply system; The pipeline of the output terminal of described cold supply system is connected with the pipeline between the output terminal of described decompressor and described voltage regulating station.
Preferably, the quantity of described power saving unit is N group; In the time that N is more than or equal to 2, N organizes between described power saving unit and is connected in series by pipeline; Wherein, N is natural number.
Preferred, described power generation system comprises expansion power generation machine and low-temperature electricity-generating unit; Described cold supply system comprises heat exchanger; The pipeline that the input end of described decompressor connects is connected by pipeline with the input end of described expansion power generation machine; The output terminal of described expansion power generation machine is connected by pipeline with the input end of described low-temperature electricity-generating unit; The output terminal of described low-temperature electricity-generating unit is connected by pipeline with the input end of described heat exchanger; Pipeline between the output terminal of described decompressor and described voltage regulating station is connected by pipeline with the output terminal of described heat exchanger.
Preferred, on described low-temperature electricity-generating unit, be connected with and on cooling pipeline and/or described heat exchanger, be connected with described cooling pipeline.
Preferred, on described expansion power generation machine and described low-temperature electricity-generating unit, be all connected with power device.
Preferred, described low-temperature electricity-generating unit is organic Rankine circulating generation unit.
Preferred, the joint of the pipeline of the connection of the input end of the pipeline that the pipeline that the output terminal of described power generation system connects is connected with the input end of described decompressor, as point of branching; The pipeline junction of the pipeline between the output terminal of described decompressor and described voltage regulating station and the output terminal of described cold supply system, as point; Pipeline between described point of branching and described decompressor is provided with main road valve; Pipeline between described point and described decompressor is provided with described main road valve; Pipeline between described point of branching and described expansion power generation machine is provided with branch road valve; Pipeline between described point and described heat exchanger is provided with described branch road valve.
Preferred, the pipeline between described expansion power generation machine and described low-temperature electricity-generating unit is crossed bypass duct with the device for cleaning pipeline between low-temperature electricity-generating unit and heat exchanger and is connected; Described bypass duct is provided with flow control valve.
Preferred, also comprise control gear; Described main road valve, described branch road valve and described flow control valve are all connected with described control gear.
Preferred, described control gear is electric controller.
The utility model compared with prior art, has following beneficial effect:
The utility model provides a kind of natural gas pressure regulating station complementary energy synthesis to utilize system, the utility model is by the pressure complementary energy trans-utilization of originally wasting, recovery and the step comprehensive utilization of complementary energy are realized, fully reclaim the pressure energy of high-pressure natural gas, also pressure energy is converted into high-grade energy electric energy and cold energy, the utility model control is flexible, can regulate according to demand for cold and generated energy.The utility model has increased the utilization ratio of the energy, and the energy consumption for cooling that has effectively reduced city summer, has reduced environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation of the system at natural gas pressure regulating station in prior art;
Fig. 2 is the structural representation that comprises one group of power generation system and cold supply system in preferred embodiment of the present utility model;
Fig. 3 is the structural representation that comprises two groups of power generation systems and cold supply system in preferred embodiment of the present utility model;
1-natural-gas transfer pipeline, 2-decompressor, 3-voltage regulating station, 4-expansion power generation machine, 5-low-temperature electricity-generating unit, 6-heat exchanger, 7-electric controller, 8-power device, 9-cooling pipeline, 10-main road valve, 11-branch road valve, 12-flow control valve.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, traditional natural gas via natural-gas transfer pipeline 1 enters decompressor 2, after expenditure and pressure, enters voltage regulating station 3.
As shown in Figure 2, working procedure of the present utility model is system while normally moving, and main road valve 10 is closed, and branch road valve 11 is opened, and flow control valve 12 cuts out.A kind of natural gas pressure regulating station 3 complementary energy synthesis in the utility model utilize system, comprise decompressor 2 and voltage regulating station 3, and the output terminal of decompressor 2 is connected with voltage regulating station 3 by pipeline 1; The pipeline 1 wherein adopting in the utility model is natural-gas transfer pipeline 1, and native system also comprises power saving unit; The pipeline 1 that the pipeline 1 that the input end of decompressor 2 connects is connected with the input end of power saving unit connects; Pipeline 1 between the output terminal of decompressor 2 and voltage regulating station 3 is connected with the pipeline 1 of the output terminal of power saving unit; Power saving unit comprises power generation system and cold supply system; The pipeline 1 that the pipeline 1 that the input end of decompressor 2 connects is connected with the input end of power generation system connects; The output terminal of power generation system is connected by pipeline 1 with the input end of cold supply system; The pipeline 1 of the output terminal of cold supply system is connected with the pipeline 1 between the output terminal of decompressor 2 and voltage regulating station 3.Power generation system comprises expansion power generation machine 4 and low-temperature electricity-generating unit 5; Cold supply system comprises heat exchanger 6; The pipeline 1 that the input end of decompressor 2 connects is connected by pipeline 1 with the input end of expansion power generation machine 4; The output terminal of expansion power generation machine 4 is connected by pipeline 1 with the input end of low-temperature electricity-generating unit 5; The output terminal of low-temperature electricity-generating unit 5 is connected by pipeline 1 with the input end of heat exchanger 6; Pipeline 1 between the output terminal of decompressor 2 and voltage regulating station 3 is connected by pipeline 1 with the output terminal of heat exchanger 6.Wherein low-temperature electricity-generating unit 5 adopts organic Rankine circulating generation unit, on low-temperature electricity-generating unit 5 and heat exchanger 6, is all connected with cooling pipeline 9.On expansion power generation machine 4 and low-temperature electricity-generating unit 5, be all connected with power device 8.The joint of the pipeline 1 of the connection of the input end of the pipeline 1 that the pipeline 1 that the output terminal of power generation system connects is connected with the input end of decompressor 2, as point of branching; Pipeline 1 between the output terminal of decompressor 2 and voltage regulating station 3 and pipeline 1 joint of the output terminal of cold supply system, as point; Pipeline 1 between point of branching and decompressor 2 is provided with main road valve 10; Pipeline 1 between point and decompressor 2 is provided with main road valve 10; Pipeline 1 between point of branching and expansion power generation machine 4 is provided with branch road valve 11; Pipeline 1 between point and heat exchanger 6 is provided with branch road valve 11.Pipeline 1 between expansion power generation machine 4 and low-temperature electricity-generating unit 5 is connected by bypass duct 1 with the pipeline 1 between low-temperature electricity-generating unit 5 and heat exchanger 6; Bypass duct 1 is provided with flow control valve 12.The utility model also comprises control gear; Wherein control gear adopts electric controller 7, and main road valve 10, branch road valve 11 and flow control valve 12 are all connected with control gear.
As shown in Figure 3, the quantity of power saving unit of the present utility model can also be N group; In the time that N is more than or equal to 2, between N group power saving unit, be connected in series by pipeline; Wherein, N is natural number; The process of concrete series connection is that the output terminal of heat exchanger 6 of first group of power saving unit and the input end of the expansion power generation machine 4 of second group of power saving unit are connected, the output terminal of the heat exchanger 6 of second group of power saving unit is connected with the input end of the expansion power generation machine 4 of the 3rd group of power saving unit, the like until be connected in series to N group power saving unit, the output terminal of the heat exchanger 6 of N-1 group power saving unit is connected with the input end of the expansion power generation machine 4 of N group power saving unit, and the heat exchanger 6 of N group is connected with the pipeline between output terminal and the described voltage regulating station 3 of decompressor 2.
Rock gas, by pipeline, enters expansion power generation machine 4, and Pressure Drop is to expected value, and simultaneous temperature also significantly reduces, and can, according to exhaust pressure difference, can be low to moderate below subzero degree Celsius.Then rock gas enters low-temperature electricity-generating unit 5, and temperature raises.Rock gas passes through heat exchanger 6 subsequently, and temperature continues to be increased to normal temperature, sends into voltage regulating station 3.Expansion power generation machine 4, under the driving of high-pressure natural gas, is powered to external loading by power device 8; Low-temperature electricity-generating unit 5 utilizes cryogenic natural gas as low-temperature receiver, powers to power device 8, carries out cooling to the cold carrying agent in cooling pipeline 9 simultaneously.By heat exchanger 6, cryogenic natural gas carries out cooling to the cold carrying agent in the second cooling pipeline 9, and natural gas temperature is increased to normal temperature simultaneously.If there is no enough colod-application families, or while thering is no cooling demand, cooling pipeline 9 and/or interior cold carrying agent are also replaceable is natural medium, as seawater, river, air etc., cold is directly to environmental emission, and electric controller 7 is mainly used in each valve control and regulate.In the time that refrigeration requirement increases, adjustable adjustable valve 12, reduces to enter the gas discharge of low-temperature electricity-generating unit 5.In the time that power generation system, heat exchanger 6 etc. send fault or maintenance, main road valve 10 is opened, and branch road valve 11 is closed, and still can adopt former technique to carry out work.The rock gas of its mesohigh is converted into electric energy by the expansion power generation machine 4 of power generation system by pressure energy, outwards acting generating, and temperature significantly reduces; Cryogenic natural gas is as low-temperature receiver by the condenser of the low-temperature electricity-generating unit 5 of power generation system afterwards, and low-temperature electricity-generating unit 5 is converted into electric energy by cold energy and outwards powers, and temperature raises; The thermal source of low-temperature electricity-generating unit 5 is provided by cooling pipeline 9; The rock gas that leaves power generation system enters the heat exchanger 6 of cold supply system, and cold is passed to cold carrying agent, as: water, temperature raises, and sends into downstream process, as: second voltage regulation station 3; Cold carrying agent is delivered to cold energy the user of outside need cooling by cold carrying agent by cooling pipeline 9; Regulated by flow control valve 12 for cold.Control system is responsible for coordination and the switching of whole modernization system.The utility model provides a kind of natural gas pressure regulating station 3 complementary energy synthesis to utilize system, the utility model is by the pressure complementary energy trans-utilization of originally wasting, recovery and the step comprehensive utilization of complementary energy are realized, fully reclaim the pressure energy of high-pressure natural gas, also pressure energy is converted into high-grade energy electric energy and cold energy, the utility model control is flexible, can regulate according to demand for cold and generated energy.The utility model has increased the utilization ratio of the energy, and the energy consumption for cooling that has effectively reduced city summer, has reduced environmental pollution.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any amendment of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. natural gas pressure regulating station complementary energy synthesis utilizes a system, comprises decompressor and voltage regulating station, and the output terminal of described decompressor is connected with described voltage regulating station by pipeline; It is characterized in that: also comprise power saving unit; The pipeline that the pipeline that the input end of described decompressor connects is connected with the input end of described power saving unit connects; Pipeline between the output terminal of described decompressor and described voltage regulating station is connected with the pipeline of the output terminal of described power saving unit; Described power saving unit comprises power generation system and cold supply system; The pipeline that the pipeline that the input end of described decompressor connects is connected with the input end of described power generation system connects; The output terminal of described power generation system is connected by pipeline with the input end of described cold supply system; The pipeline of the output terminal of described cold supply system is connected with the pipeline between the output terminal of described decompressor and described voltage regulating station.
2. natural gas pressure regulating according to claim 1 station complementary energy synthesis utilizes system, it is characterized in that: the quantity of described power saving unit is N group; In the time that N is more than or equal to 2, N organizes between described power saving unit and is connected in series by pipeline; Wherein, N is natural number.
3. utilize system according to claim 1 or natural gas pressure regulating claimed in claim 2 station complementary energy synthesis, it is characterized in that: described power generation system comprises expansion power generation machine and low-temperature electricity-generating unit; Described cold supply system comprises heat exchanger; The pipeline that the input end of described decompressor connects is connected by pipeline with the input end of described expansion power generation machine; The output terminal of described expansion power generation machine is connected by pipeline with the input end of described low-temperature electricity-generating unit; The output terminal of described low-temperature electricity-generating unit is connected by pipeline with the input end of described heat exchanger; Pipeline between the output terminal of described decompressor and described voltage regulating station is connected by pipeline with the output terminal of described heat exchanger.
4. natural gas pressure regulating according to claim 3 station complementary energy synthesis utilizes system, it is characterized in that: on described low-temperature electricity-generating unit, be connected with and on cooling pipeline and/or described heat exchanger, be connected with described cooling pipeline.
5. natural gas pressure regulating according to claim 3 station complementary energy synthesis utilizes system, it is characterized in that: on described expansion power generation machine and described low-temperature electricity-generating unit, be all connected with power device.
6. natural gas pressure regulating according to claim 3 station complementary energy synthesis utilizes system, it is characterized in that: described low-temperature electricity-generating unit is organic Rankine circulating generation unit.
7. natural gas pressure regulating according to claim 3 station complementary energy synthesis utilizes system, it is characterized in that: the joint of the pipeline of the connection of the input end of the pipeline that the pipeline that the output terminal of described power generation system connects is connected with the input end of described decompressor, as point of branching; The pipeline junction of the pipeline between the output terminal of described decompressor and described voltage regulating station and the output terminal of described cold supply system, as point; Pipeline between described point of branching and described decompressor is provided with main road valve; Pipeline between described point and described decompressor is provided with described main road valve; Pipeline between described point of branching and described expansion power generation machine is provided with branch road valve; Pipeline between described point and described heat exchanger is provided with described branch road valve.
8. natural gas pressure regulating according to claim 7 station complementary energy synthesis utilizes system, it is characterized in that: the pipeline between described expansion power generation machine and described low-temperature electricity-generating unit is crossed bypass duct with the device for cleaning pipeline between low-temperature electricity-generating unit and heat exchanger and is connected; Described bypass duct is provided with flow control valve.
9. natural gas pressure regulating according to claim 8 station complementary energy synthesis utilizes system, it is characterized in that: also comprise control gear; Described main road valve, described branch road valve and described flow control valve are all connected with described control gear.
10. natural gas pressure regulating according to claim 9 station complementary energy synthesis utilizes system, it is characterized in that: described control gear is electric controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420243993.0U CN203847188U (en) | 2014-05-13 | 2014-05-13 | Complementary energy comprehensive utilization system of natural gas regulator station |
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| CN201420243993.0U CN203847188U (en) | 2014-05-13 | 2014-05-13 | Complementary energy comprehensive utilization system of natural gas regulator station |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533531A (en) * | 2015-01-06 | 2015-04-22 | 无锡玄同科技有限公司 | System and device for recovering pressure energy of natural gas pipeline as well as rotor expander |
| 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 |
| CN106224780A (en) * | 2016-08-31 | 2016-12-14 | 浙江浙能节能科技有限公司 | Pressure energy of natural gas comprehensive utilization device variable working condition interlock control system and method |
| CN107575744A (en) * | 2017-08-14 | 2018-01-12 | 新地能源工程技术有限公司 | Natural gas pressure regulating generating integration device and method |
| CN109441696A (en) * | 2018-11-15 | 2019-03-08 | 湖南红太东方机电装备股份有限公司 | A kind of energy conservation turbine-generator units |
| CN111219596A (en) * | 2020-03-03 | 2020-06-02 | 佛山市燃气集团股份有限公司 | Electricity cold production recycle system of hydrogenation station and natural gas pressure regulating station |
-
2014
- 2014-05-13 CN CN201420243993.0U patent/CN203847188U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533531A (en) * | 2015-01-06 | 2015-04-22 | 无锡玄同科技有限公司 | System and device for recovering pressure energy of natural gas pipeline as well as rotor expander |
| CN104533531B (en) * | 2015-01-06 | 2017-11-14 | 无锡玄同科技有限公司 | Natural gas line pressure energy recovery system, pressure energy retracting device |
| 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 |
| CN106224780A (en) * | 2016-08-31 | 2016-12-14 | 浙江浙能节能科技有限公司 | Pressure energy of natural gas comprehensive utilization device variable working condition interlock control system and method |
| CN107575744A (en) * | 2017-08-14 | 2018-01-12 | 新地能源工程技术有限公司 | Natural gas pressure regulating generating integration device and method |
| CN107575744B (en) * | 2017-08-14 | 2019-11-12 | 新地能源工程技术有限公司 | Natural gas pressure regulating generating integration device and method |
| CN109441696A (en) * | 2018-11-15 | 2019-03-08 | 湖南红太东方机电装备股份有限公司 | A kind of energy conservation turbine-generator units |
| CN109441696B (en) * | 2018-11-15 | 2024-08-13 | 湖南红太东方机电装备股份有限公司 | Energy-saving hydroelectric generating set |
| CN111219596A (en) * | 2020-03-03 | 2020-06-02 | 佛山市燃气集团股份有限公司 | Electricity cold production recycle system of hydrogenation station and natural gas pressure regulating station |
| CN111219596B (en) * | 2020-03-03 | 2024-05-24 | 佛燃能源集团股份有限公司 | Electric cooling production recycling system of hydrogenation station and natural gas pressure regulating station |
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