CN206655790U - A kind of natural gas transport system - Google Patents
A kind of natural gas transport system Download PDFInfo
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- CN206655790U CN206655790U CN201720121389.4U CN201720121389U CN206655790U CN 206655790 U CN206655790 U CN 206655790U CN 201720121389 U CN201720121389 U CN 201720121389U CN 206655790 U CN206655790 U CN 206655790U
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- natural gas
- pipeline
- output end
- transport system
- transfer conduit
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Abstract
The utility model provides a kind of natural gas transport system, including high-pressure natural gas pipeline and low pressure natural gas pipeline, wherein, the natural gas transport system also includes：The expanding machine TRT being connected with the high-pressure natural gas pipeline by the first transfer conduit, wherein the expanding machine TRT includes the first natural gas output end；The heat pump heating device being connected with the first natural gas output end by the second transfer conduit, wherein described heat pump heating device includes the second natural gas output end, and the second natural gas output end is connected by the 3rd transfer conduit with the low pressure natural gas pipeline.Natural gas transport system provided by the utility model make use of the high-pressure energy of natural gas, while the partial heat energy of natural gas is converted into electric energy, accurately reach required pressure drop, natural gas temperature is constant, while generates the purpose of electric power.
Description
Technical field
Field of Environment Protection is the utility model is related to, more particularly to a kind of natural gas transport system.
Background technology
At present, the conventional buck measure serious waste at the natural valve station high-pressure energy of natural gas, especially naturally
In the case that the gas discharge at valve station is bigger, the energy of loss is particularly considerable；The general decompression side of natural gas urban gate station
Method is to use throttling arrangement, the high pressure A for entering natural valve station is dropped into high pressure B or sub-high pressure A, in pressure reduction, naturally
The pressure energy of gas is wasted.
Utility model content
The utility model provides a kind of natural gas transport system, and its purpose is to solve the pressure of high-pressure natural gas to obtain
Less than reasonable the problem of utilizing.
In order to achieve the above object, embodiment of the present utility model provides a kind of natural gas transport system, including high pressure
Gas pipeline and low pressure natural gas pipeline, the natural gas transport system also include：
The expanding machine TRT being connected with the high-pressure natural gas pipeline by the first transfer conduit, wherein the expansion
Machine TRT includes the first natural gas output end；
The heat pump heating device being connected with the first natural gas output end by the second transfer conduit, wherein the heat pump
Heater includes the second natural gas output end, and the second natural gas output end passes through the 3rd transfer conduit and the low pressure
Gas pipeline connects.
Wherein, the expanding machine TRT includes expanding machine and generator, wherein the expanding machine includes first day
Right gas input and the first natural gas output end, first natural gas input pass through with the high-pressure natural gas pipeline
First transfer conduit connects；The expanding machine also includes the 3rd natural gas output end, is connected with the generator by the first pipeline
Connect.
Wherein, the heat pump heating system includes condenser and evaporator, wherein the condenser includes the first condensation
Liquid output end and the first condenser input, the evaporator include the second condensate liquid output end and the second condenser input；
Condensate circulation pipeline is provided between the condenser and the evaporator, the condensate circulation pipeline includes
First circulation pipeline and second circulation pipeline, the first circulation pipeline connect the first condensate liquid output end and the second condensation
Device input, the second circulation pipeline connect the second condensate liquid output end and the first condensate liquid input.
Wherein, a compressor is provided with the first circulation pipeline, described in the condensate liquid is flowed to from the evaporator
Pressurizeed during condenser by compressor.
Wherein, a restricting element is provided with the second circulation pipeline, the condensate liquid flows to institute from the condenser
It is depressured when stating evaporator by restricting element.
Wherein, ground water circulation pipeline, the inlet pipeline of the ground water circulation pipeline are additionally provided with the evaporator
Connected with outlet pipeline with underground water.
Wherein, underground water is pumped into the ground water circulation by the inlet pipeline of the ground water circulation pipeline by a water pump
Pipeline, and the knot screen of filtering underground is additionally provided with the inlet pipeline.
Wherein, filter is provided with first transfer conduit, the filter inputs including the 4th natural gas
End and the 4th natural gas output end, the 4th natural gas input pass through first transfer conduit and the high-pressure natural gas
Pipeline is connected, and the 4th natural gas output end is connected by first transfer conduit with first natural gas input.
Wherein, it is communicated with the 4th transfer conduit between first transfer conduit and the low pressure natural gas pipeline, the 4th
Dropping equipment is provided with transfer conduit, first switch is provided between the filter and the dropping equipment.
Wherein, it is provided with second switch between the filter and the expanding machine.
Such scheme of the present utility model has following beneficial effect：
Natural gas transport system described in above-described embodiment of the present utility model utilizes the original mistake of natural gas urban gate station
Device is filtered, the perforate between original filter and dropping equipment, high-pressure side natural gas is drawn, is entered by pipeline and expanded
Machine, expanding machine drawing generator generate electricity；Low pressure natural gas after acting enters the condenser of heat pump by pipeline, same with this
When, heat pump is exchanged heat by the underground water with lifting, absorbs the heat of underground water, and the underground water after cooling is returned ground
Under, heat pump carries the condenser that heat enters heat pump, after natural gas is heated to predetermined temperature, into down stream low pressure side
Natural gas line；The purpose of the high-pressure energy using natural gas is realized, it is converted into electric power, while utilize heat pump
Energy conservation characteristic, during natural gas decompression is realized, the temperature change of natural gas does not occur, to the transport of downstream combustion gas with
Client is utilized without influence.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
【Description of reference numerals】
1- high-pressure natural gas pipelines；2- low pressure natural gas pipelines；3- expanding machines；4- generators；5- condensers；6- evaporates
Device；7- compressors；8- restricting elements；9- knot screens；10- filters；11- dropping equipments；12- first switches；13- second
Switch.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
The problem of the utility model cannot be utilized rationally for the pressure of existing high-pressure natural gas, there is provided Yi Zhongtian
Right gas Transmission system.
As shown in figure 1, embodiment of the present utility model provides a kind of natural gas transport system, including high-pressure natural gas pipe
Road 1 and low pressure natural gas pipeline 2, the natural gas transport system also include：Passed with the high-pressure natural gas pipeline 1 by first
The expanding machine TRT of defeated pipeline connection, wherein the expanding machine TRT includes the first natural gas output end；With it is described
The heat pump heating device that first natural gas output end is connected by the second transfer conduit, wherein the heat pump heating device includes the
Two natural gas output ends, and the second natural gas output end is connected by the 3rd transfer conduit and the low pressure natural gas pipeline 2
Connect.
Natural gas transport system described in above-described embodiment of the present utility model utilizes the original mistake of natural gas urban gate station
Device 10 is filtered, the perforate between original filter 10 and dropping equipment, high-pressure side natural gas is drawn, is entered by pipeline swollen
Swollen machine 3, the drawing generator 4 of expanding machine 3 generate electricity；Low pressure natural gas after acting enters the condenser 5 of heat pump by pipeline,
At the same time, heat pump is exchanged heat by the underground water with lifting, absorbs the heat of underground water, the underground water quilt after cooling
Underground is returned, heat pump carries the condenser 5 that heat enters heat pump, after natural gas is heated to predetermined temperature, under
Swim low-pressure side natural gas line；The purpose of the high-pressure energy using natural gas is realized, it is converted into electric power, utilized simultaneously
The energy conservation characteristic of heat pump, during natural gas decompression is realized, the temperature change of natural gas does not occur, to downstream combustion gas
Transport and client utilize without influence.
Wherein, the expanding machine TRT includes expanding machine 3 and generator 4, wherein the expanding machine 3 includes the
One natural gas input and the first natural gas output end, first natural gas input and the high-pressure natural gas pipeline
1 is connected by the first transfer conduit；The expanding machine 3 also includes the 3rd natural gas output end, passes through first with the generator 4
Pipeline connects.
Expanding machine TRT described in above-described embodiment of the present utility model includes expanding machine 3 and generator 4, described
Expanding machine 3 uses turbo-expander 3, and the expanding machine 3 is that one kind makes expansion of compressed gas and power output, thus pressure
Prime mover with energy reduction is reduced, in the expanding machine 3, the energy exchange of gas occurs between the nozzle vane of air deflector
In running wheel.High pressure draught is expanded in nozzle, then enters impeller with certain speed, promotes impeller rotation.
Air-flow can also further expand after entering impeller, and the recoil strength of air-flow further promotes impeller to rotate, the impeller axle driving of rotation
4 groups of generatings of generator.Because the time that gas passes through in expanding machine 3 is extremely short, have little time to carry out heat friendship with surrounding environment
Change, thus adiabatic efficiency is very high, this process can be considered constant entropy expansion.Gas flow into expanding machine 3 can pass through water conservancy diversion
Blade is adjusted, with the change of adaptive system load.
Had according to thermal balance relation：Q=(h1-h2) × M × 3600 × ÷ 1000 of 1 × η of η, 2 × η, 3 ÷ 3600；Wherein, Q is
The generated energy of expansion power generation system, unit MW；
H1 be the entrance side of expanding machine 3 natural gas enthalpy, unit kj/kg；
H2 be the outlet side of expanding machine 3 natural gas enthalpy, unit kj/kg；
M be into the natural gas of expanding machine 3 mass flow, unit kg/s；
η 1 is the internal efficiency of expanding machine 3；η 2 is gear-box efficiency；η 3 is the efficiency of generator 4.
Wherein, the heat pump heating system includes condenser 5 and evaporator 6, wherein the condenser 5 includes first
Condensate liquid output end and the first condenser input, the evaporator 6 includes the second condensate liquid output end and the second condenser is defeated
Enter end；Condensate circulation pipeline is provided between the condenser 5 and the evaporator 6, the condensate circulation pipeline includes
First circulation pipeline and second circulation pipeline, the first circulation pipeline connect the first condensate liquid output end and the second condensation
Device input, the second circulation pipeline connect the second condensate liquid output end and the first condensate liquid input.
Heat pump heating system described in above-described embodiment of the present utility model includes condenser 5 and evaporator 6, and heat pump adds
Hot systems be it is a kind of can obtain low-grade heat from the empty gas and water or soil of nature, done work by electric power, export available height
The equipment of grade heat energy, the high-grade electric energy of consumption can be converted to 3 times even more than 3 times of heat energy, be a kind of efficient work(
Can technology；The heat pump heating system that the utility model uses, absorbs heat, to the heat supply of condenser 5 from underground water.
Had according to thermal balance relation：M=(h3-h2) × M × ÷ η 5 of 3600 ÷ (h5-h4) ÷ η 4；
Wherein, m be underground water mass flow, unit kg/h；
H3 corresponds to the enthalpy of natural gas under inlet temperature, unit kj/kg for the outlet pressure of expanding machine 3；
H4 exports the enthalpy of underground water, unit kj/kg for heat pump evaporator 6；
H5 be the entrance underground water of heat pump evaporator 6 enthalpy, unit kj/kg；
η 4 is the errors of heat pump evaporator 6；η 5 is the errors of heat pump condenser 5.
Wherein, a compressor 7 is provided with the first circulation pipeline, the condensate liquid flows to institute from the evaporator 6
Pressurizeed when stating condenser 5 by compressor 7.
Wherein, a restricting element 8 is provided with the second circulation pipeline, the condensate liquid flows to from the condenser 5
It is depressured during the evaporator 6 by restricting element 8.
Compressor 7 is provided with heat pump heating system described in above-described embodiment of the present utility model, makes the condensate liquid
For pressurized delivered to the condenser 5, the condensate liquid, from underground water draw heat, becomes high-temperature low-pressure gaseous state at evaporator 6,
By compressor compresses, turn into high pressure gaseous, heat is taken away by natural gas into condenser 5, becomes high-pressure liquid, then
It is depressured by the restricting element 8, becomes low-pressure liquid, be transported to the condensate liquid, exchanged heat with the natural gas, is made low
The natural gas of temperature recovers original temperature and volume, is conveniently delivered in the low pressure natural gas pipeline 2 and is used.
Wherein, ground water circulation pipeline, the inlet pipeline of the ground water circulation pipeline are additionally provided with the evaporator 6
Connected with outlet pipeline with underground water.
Wherein, underground water is pumped into the ground water circulation by the inlet pipeline of the ground water circulation pipeline by a water pump
Pipeline, and the knot screen 9 of filtering underground is additionally provided with the inlet pipeline.
The thermal source of the water source type heat pump in ground water circulation pipeline described in above-described embodiment of the present utility model directly takes
From underground water, after underground water is elevated, by removal of impurities, into the evaporator 6 of heat pump, after being exchanged heat with heat pump, weighed
New to return underground, underground water completes a circulation；The heat that heat pump carries is released in condenser 5, to low temperature day
Right gas is heated.
Wherein, filter 10 is provided with first transfer conduit, the filter 10 includes the 4th natural gas
Input and the 4th natural gas output end, the 4th natural gas input pass through first transfer conduit and the high pressure day
Right air pipe 1 connects, and the 4th natural gas output end passes through first transfer conduit and first natural gas input
Connection.
Wherein, it is communicated with the 4th transfer conduit between first transfer conduit and the low pressure natural gas pipeline 2, the 4th
Dropping equipment 11 is provided with transfer conduit, first switch is provided between the filter 10 and the dropping equipment 11
12。
Wherein, it is provided with second switch 13 between the filter 10 and the expanding machine 3.
Natural gas transport system described in above-described embodiment of the present utility model is by from upstream high gas pipeline 1
Natural gas is after filter 10, under the control of first switch 12 and second switch 13, is done into the expansion of turbo-expander 3
Work(, and drawing generator 4 generates electricity；Natural gas after workmanship enters gas heater.Underground water lift pump lifts underground water
To ground, after removal of impurities, into the evaporator 6 of heat pump, cooled underground water is returned underground again, heat pump
Working media carries the heat energy obtained from underground water, into condenser 5, in condenser 5, the working media pair of heat pump
Natural gas is heated, and after natural gas is heated to predetermined temperature, down stream low pressure natural gas tube is transported to by valve
Road 2, when patent system is in inspecting state, the original decompression pipeline of natural gas urban gate station is switched to, realizes that natural gas drops
Pressure, does not influence natural gas urban gate station normal operation.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (10)
1. a kind of natural gas transport system, including high-pressure natural gas pipeline and low pressure natural gas pipeline, it is characterised in that the day
Right gas Transmission system also includes：
The expanding machine TRT being connected with the high-pressure natural gas pipeline by the first transfer conduit, wherein the expanding machine is sent out
Electric installation includes the first natural gas output end；
The heat pump heating device being connected with the first natural gas output end by the second transfer conduit, wherein the heat pump
Device includes the second natural gas output end, and the second natural gas output end is natural by the 3rd transfer conduit and the low pressure
Air pipe connects.
2. natural gas transport system according to claim 1, it is characterised in that the expanding machine TRT includes swollen
Swollen machine and generator, wherein the expanding machine includes the first natural gas input and the first natural gas output end, described
One natural gas input is connected with the high-pressure natural gas pipeline by the first transfer conduit；The expanding machine also includes the 3rd day
Right gas output end, is connected with the generator by the first pipeline.
3. natural gas transport system according to claim 1, it is characterised in that the heat pump heating system includes condensation
Device and evaporator, wherein the condenser includes the first condensate liquid output end and the first condenser input, the evaporator bag
Include the second condensate liquid output end and the second condenser input；
Condensate circulation pipeline is provided between the condenser and the evaporator, the condensate circulation pipeline includes first
Circulation line and second circulation pipeline, the first circulation pipeline connects the first condensate liquid output end and the second condenser is defeated
Enter end, the second circulation pipeline connects the second condensate liquid output end and the first condensate liquid input.
4. natural gas transport system according to claim 3, it is characterised in that be provided with one on the first circulation pipeline
Compressor, the condensate liquid are pressurizeed by compressor when flowing to the condenser from the evaporator.
5. natural gas transport system according to claim 3, it is characterised in that be provided with one on the second circulation pipeline
Restricting element, the condensate liquid are depressured by restricting element when flowing to the evaporator from the condenser.
6. natural gas transport system according to claim 3, it is characterised in that be additionally provided with underground water in the evaporator
Circulation line, the inlet pipeline and outlet pipeline of the ground water circulation pipeline connect with underground water.
7. natural gas transport system according to claim 6, it is characterised in that the water inlet pipe of the ground water circulation pipeline
Underground water is pumped into the ground water circulation pipeline by road by a water pump, and is additionally provided with filtering underground on the inlet pipeline
Knot screen.
8. natural gas transport system according to claim 1, it is characterised in that be provided with first transfer conduit
Device is filtered, the filter includes the 4th natural gas input and the 4th natural gas output end, the 4th natural gas input
End is connected by first transfer conduit with the high-pressure natural gas pipeline, and the 4th natural gas output end passes through described the
One transfer conduit is connected with first natural gas input.
9. natural gas transport system according to claim 8, it is characterised in that first transfer conduit and the low pressure
The 4th transfer conduit is communicated between gas pipeline, is provided with dropping equipment in the 4th transfer conduit, the filter with
First switch is provided between the dropping equipment.
10. natural gas transport system according to claim 8, it is characterised in that the filter and the expanding machine
Between be provided with second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720121389.4U CN206655790U (en) | 2017-02-09 | 2017-02-09 | A kind of natural gas transport system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720121389.4U CN206655790U (en) | 2017-02-09 | 2017-02-09 | A kind of natural gas transport system |
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| Publication Number | Publication Date |
|---|---|
| CN206655790U true CN206655790U (en) | 2017-11-21 |
Family
ID=60313490
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720121389.4U Active CN206655790U (en) | 2017-02-09 | 2017-02-09 | A kind of natural gas transport system |
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| CN (1) | CN206655790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443710A (en) * | 2018-03-26 | 2018-08-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Natural gas pressure regulating heating system and pressure regulating heating method |
-
2017
- 2017-02-09 CN CN201720121389.4U patent/CN206655790U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443710A (en) * | 2018-03-26 | 2018-08-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Natural gas pressure regulating heating system and pressure regulating heating method |
| CN108443710B (en) * | 2018-03-26 | 2020-02-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Natural gas pressure-regulating heating system and pressure-regulating heating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHINA TECHNOLOGY EXCHANGE Co.,Ltd. Assignor: TOP RESOURCE CONSERVATION & ENVIRONMENT Corp. Contract record no.: X2021980013180 Denomination of utility model: A natural gas transmission system Granted publication date: 20171121 License type: Exclusive License Record date: 20211124 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A natural gas transmission system Effective date of registration: 20211125 Granted publication date: 20171121 Pledgee: CHINA TECHNOLOGY EXCHANGE Co.,Ltd. Pledgor: TOP RESOURCE CONSERVATION & ENVIRONMENT Corp. Registration number: Y2021110000071 |