CN204372553U - A kind of depressurized system of pipe natural gas door station - Google Patents

A kind of depressurized system of pipe natural gas door station Download PDF

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Publication number
CN204372553U
CN204372553U CN201420811527.8U CN201420811527U CN204372553U CN 204372553 U CN204372553 U CN 204372553U CN 201420811527 U CN201420811527 U CN 201420811527U CN 204372553 U CN204372553 U CN 204372553U
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CN
China
Prior art keywords
outlet
pipe
pipeline
gas
heating
Prior art date
Application number
CN201420811527.8U
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Chinese (zh)
Inventor
洪百聪
张红玉
刘勇
Original Assignee
山东益华燃气设备有限公司
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Application filed by 山东益华燃气设备有限公司 filed Critical 山东益华燃气设备有限公司
Priority to CN201420811527.8U priority Critical patent/CN204372553U/en
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Publication of CN204372553U publication Critical patent/CN204372553U/en

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Abstract

The utility model relates to a kind of pipe natural gas door station depressurized system, comprise the fuel gas inlet connected successively by gas pipeline, limiting pressure closing valve, front-mounted heating device, monitoring pressure governor, vortex tube, heat dissipating pipe and gas outlet, described vortex tube comprises inlet end, hot junction outlet and cold side outlet, described inlet end is connected with described monitoring pressure governor by pipeline, described cold side outlet is communicated with described heat dissipating pipe one end by pipeline, also comprise heat exchanging pipe, described heat exchanging pipe comprises the hot junction outlet described in branch line is communicated with, stop valve and front-mounted heating device, the other end of described heat dissipating pipe to be converged with the branch line after the front-mounted heating device of heat exchanging pipe by pipeline and is communicated with described gas outlet.The utility model structure is simple, improves the temperature after natural gas depressurization, avoids rock gas and occurs because decompression temperature is too low the phenomenon that ice is stifled, ensure that the safe operation of air delivering pipeline.

Description

A kind of depressurized system of pipe natural gas door station
Technical field
The utility model relates to a kind of depressurized system of pipe natural gas door station, belongs to field.
Background technique
In city gas system, pipe natural gas door station is the terminus of long distance Trunk-line, it is the gas source point of cities and towns, industrial region transmission and distribution network, its task is the combustion gas that reception long-distance transport pipes transport, carry out purifying in station, pressure regulation, metering, makings detect and add smelly after, send into city transmission and distribution network or the direct large-scale industry and commerce user of feeding.
The Imported gas temperature at pipe natural gas door station is 10 ~ 20 DEG C, inlet pressure is about 3.8Mpa, outlet pressure requires to be about 0.4Mpa, therefore, major part rock gas must to reduce pressure middle pressure through reduction valve, enter in city again and press transmission and distribution network, and in the high-pressure natural gas decompression process of door station, there will be cooling, after general decompression, temperature can reduce by 18 ~ 20 degree, when intake temperature is 20 DEG C, after decompression, outlet temperature is above zero, can heat directly to enter in city presses in transmission and distribution network, if but intake temperature is not high when being such as 10 DEG C, due to decompression cooling effect, sometimes outlet temperature may be low to-9 DEG C, the too low reduction valve ice that there will be of outlet temperature blocks up phenomenon, affect the safe operation of air delivering pipeline, in order to avoid, middle pressure outlet temperature is too low and reduction valve ice stifled, often need outside heat (boiler or electricity) heating high-pressure rock gas, which adds operation cost.
Model utility content
The deficiency that the utility model exists for above-mentioned prior art, provides a kind of without the need to external heat source, safe and reliable pipe natural gas door station depressurized system.
The technological scheme that the utility model solves the problems of the technologies described above is as follows: a kind of pipe natural gas door station depressurized system, comprise the fuel gas inlet connected successively by gas pipeline, limiting pressure closing valve, front-mounted heating device, monitoring pressure governor and gas outlet, it is characterized in that, vortex tube is provided with between described monitoring pressure governor and heat dissipating pipe, described vortex tube comprises inlet end, hot junction outlet and cold side outlet, described inlet end is connected with described monitoring pressure governor by pipeline, described cold side outlet is communicated with one end of heat dissipating pipe by pipeline, also comprise heat exchanging pipe, described heat exchanging pipe comprises the described hot junction be communicated with by branch line and exports, stop valve and front-mounted heating device, the other end of described heat dissipating pipe to be converged with the branch line after the front-mounted heating device of heat exchanging pipe by pipeline and is communicated with described gas outlet.
Further, the pipeline of described gas outlet is also provided with pressure gauge, temperature takes into account safety valve.The convenient pressure and temperature observing outlet in time, guarantees the safe and stable operation of air delivering pipeline.
Further, described heat dissipating pipe surface is provided with multiple fin.Be convenient to and external environment heat exchange.
High-pressure natural gas is entered by fuel gas inlet, to reduce pressure middle pressure transmission and distribution network through monitoring pressure governor, vortex tube after preposition heater heat temperature raising, in vortex tube, rock gas High Rotation Speed is divided into the cold two strands of air-flows of heat, hot air flow returns the heat exchange of front-mounted heating device by heat exchange circuit, in time the high-pressure natural gas entered by fuel gas inlet is heated, and cold airflow carries out heat exchange through finned heat dissipating pipe and external environment, two plume manifolds respectively after heat exchange close and are delivered to middle pressure transmission and distribution network by gas outlet.
The beneficial effects of the utility model are: the utility model is provided with front-mounted heating device, can to the high-pressure natural gas elder generation heat temperature raising entering this system, then enter monitoring pressure governor to reduce pressure, the vortex tube of the main pattern of fever of the rear end setting of monitoring pressure governor, the hot air flow exporting out from vortex tube hot junction provides heat to carry out heat exchange by heat exchanging pipe to front-mounted heating device, make full use of the hot air flow heat of vortex tube, be that the rock gas entered from fuel gas inlet heats up by being supplied to the heat of front-mounted heating device, eliminate external thermal source, and heat exchange intensification can also be carried out through heat dissipating pipe and external environment from the cold side outlet cold airflow out of vortex tube, pressure transmission and distribution network is entered into from gas outlet after hot air flow and cold airflow converge, the utility model structure is simple, improve the outlet temperature after natural gas depressurization, avoid rock gas and occur because decompression temperature is too low the phenomenon that ice is stifled, ensure that the safe operation of air delivering pipeline, and avoid the waste of the energy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, fuel gas inlet; 2, limiting pressure closing valve; 3, front-mounted heating device; 4, pressure governor is monitored; 5, vortex tube; 51, inlet end; 52, hot junction outlet; 53, cold side outlet; 6, stop valve; 7, heat dissipating pipe; 8, pressure gauge; 9, thermometer; 10, safety valve; 11, gas outlet.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of pipe natural gas door station depressurized system, comprise the fuel gas inlet 1 connected successively by gas pipeline, limiting pressure closing valve 2, front-mounted heating device 3, monitoring pressure governor 4 and gas outlet 11, described vortex tube 5 comprises inlet end 51, hot junction outlet 52 and cold side outlet 53, described inlet end 51 is connected with described monitoring pressure governor 4 by pipeline, described cold side outlet 53 is communicated with heat dissipating pipe 7 one end by pipeline, also comprise heat exchanging pipe, described heat exchanging pipe comprises the hot junction outlet 52 described in branch line is communicated with, stop valve 6 and front-mounted heating device 3, the other end of described heat dissipating pipe 7 is communicated with described gas outlet 11 with after the branch line after the front-mounted heating device of heat exchanging pipe converges by pipeline.
The pipeline of described gas outlet is also provided with pressure gauge 8, thermometer 9 and safety valve 10.The convenient pressure and temperature observing outlet in time, guarantees the safe and stable operation of air delivering pipeline.
Described heat dissipating pipe 7 surface is provided with multiple fin.Be convenient to and external environment heat exchange.
High-pressure natural gas is entered by fuel gas inlet, after preposition heater heat temperature raising, then through monitoring pressure governor, vortex tube reduces pressure middle pressure transmission and distribution network, vortex tube is main pattern of fever, if intake temperature 10 °, hot junction outlet temperature about 60 °, cold side outlet temperature about-30 °, in vortex tube, rock gas High Rotation Speed is divided into the cold two strands of air-flows of heat, hot air flow is by heat exchanging pipe and the heat exchange of front-mounted heating device, in time the high-pressure natural gas through front-mounted heating device is first heated, no longer need to adopt external heat source to heat front-mounted heating device, avoid the waste of the energy, and cold airflow carries out heat exchange through finned heat dissipating pipe and external environment, two plume manifolds respectively after heat exchange close and are delivered to middle pressure transmission and distribution network by gas outlet, after depressurized system makes pressure regulation under the effect monitoring pressure governor and vortex tube, pressure is steady, fuel gas inlet temperature can be improved about 10 ° by the hot air flow of vortex tube, and after cold airflow and external environment heat exchange temperature a little less than ambient temperature, guarantee that the temperature of rock gas is above zero, ice is not stifled to ensure that pressure reduction, ensure the safe operation of delivery line.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (3)

1. a pipe natural gas door station depressurized system, comprise the fuel gas inlet connected successively by gas pipeline, limiting pressure closing valve, front-mounted heating device, monitoring pressure governor and gas outlet, it is characterized in that, vortex tube is provided with between described monitoring pressure governor and heat dissipating pipe, described vortex tube comprises inlet end, hot junction outlet and cold side outlet, described inlet end is connected with described monitoring pressure governor by pipeline, described cold side outlet is communicated with one end of heat dissipating pipe by pipeline, also comprise heat exchanging pipe, described heat exchanging pipe comprises the described hot junction be communicated with by branch line and exports, stop valve and front-mounted heating device, the other end of described heat dissipating pipe to be converged with the branch line after the front-mounted heating device of heat exchanging pipe by pipeline and is communicated with described gas outlet.
2. pipe natural gas door station according to claim 1 depressurized system, is characterized in that, the pipeline of described gas outlet is also provided with pressure gauge, temperature takes into account safety valve.
3. pipe natural gas door station according to claim 1 and 2 depressurized system, it is characterized in that, described heat dissipating pipe surface is provided with multiple fin.
CN201420811527.8U 2014-12-18 2014-12-18 A kind of depressurized system of pipe natural gas door station CN204372553U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420811527.8U CN204372553U (en) 2014-12-18 2014-12-18 A kind of depressurized system of pipe natural gas door station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420811527.8U CN204372553U (en) 2014-12-18 2014-12-18 A kind of depressurized system of pipe natural gas door station

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CN204372553U true CN204372553U (en) 2015-06-03

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107940235A (en) * 2017-11-09 2018-04-20 大连理工大学 Ultra-low temperature surroundings based on recycling incoming-flow pressure energy take hot day right controlled atmosphere temperature voltage-regulating system
CN107965667A (en) * 2017-11-09 2018-04-27 大连理工大学 It is a kind of to realize that Cryogenic air takes the pipe natural gas voltage-regulating system of heat using pipeline pressure itself
CN108071939A (en) * 2017-11-09 2018-05-25 大连理工大学 It is a kind of to realize that Cryogenic air takes the compressed natural gas pressure regulating gas system of heat using storage tank pressure itself
CN109854951A (en) * 2018-12-24 2019-06-07 涿州滨海燃气有限公司 High voltage rail pressure classification utilizes system
CN110406824A (en) * 2019-07-15 2019-11-05 芜湖暖江电气科技有限公司 Double-channel gas vortex self-heating apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107940235A (en) * 2017-11-09 2018-04-20 大连理工大学 Ultra-low temperature surroundings based on recycling incoming-flow pressure energy take hot day right controlled atmosphere temperature voltage-regulating system
CN107965667A (en) * 2017-11-09 2018-04-27 大连理工大学 It is a kind of to realize that Cryogenic air takes the pipe natural gas voltage-regulating system of heat using pipeline pressure itself
CN108071939A (en) * 2017-11-09 2018-05-25 大连理工大学 It is a kind of to realize that Cryogenic air takes the compressed natural gas pressure regulating gas system of heat using storage tank pressure itself
CN107940235B (en) * 2017-11-09 2018-10-16 大连理工大学 Ultra-low temperature surroundings based on recycling incoming-flow pressure energy take hot day right controlled atmosphere temperature voltage-regulating system
WO2019090885A1 (en) * 2017-11-09 2019-05-16 大连理工大学 Natural gas temperature-adjusting and pressure-adjusting system capable of absorbing heat in ultra-low temperature environment based on incoming flow pressure energy recovery
CN107965667B (en) * 2017-11-09 2019-08-20 大连理工大学 It is a kind of to realize that Cryogenic air takes the pipe natural gas voltage-regulating system of heat using pipeline pressure itself
CN108071939B (en) * 2017-11-09 2019-08-20 大连理工大学 It is a kind of to realize that Cryogenic air takes the compressed natural gas pressure regulating gas system of heat using storage tank pressure itself
US10704739B2 (en) 2017-11-09 2020-07-07 Dalian University Of Technology Natural gas temperature and pressure regulating system based on recovering pressure energy and absorbing heat from ultralow temperature ambient environment
CN109854951A (en) * 2018-12-24 2019-06-07 涿州滨海燃气有限公司 High voltage rail pressure classification utilizes system
CN110406824A (en) * 2019-07-15 2019-11-05 芜湖暖江电气科技有限公司 Double-channel gas vortex self-heating apparatus

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CP03 Change of name, title or address

Address after: 264006 No. 2, Yichang Road, Yantai economic and Technological Development Zone, Shandong, China

Patentee after: Shandong Yihua Energy Equipment Co., Ltd.

Address before: 264000 Kaifeng Road, Yantai economic and Technological Development Zone, Shandong, China, 3-1

Patentee before: SHANDONG YIHUA GAS EQUIPMENT CO., LTD.

CP03 Change of name, title or address