CN108167647A - A kind of natural gas is stood to a high-profile - Google Patents
A kind of natural gas is stood to a high-profile Download PDFInfo
- Publication number
- CN108167647A CN108167647A CN201810060700.8A CN201810060700A CN108167647A CN 108167647 A CN108167647 A CN 108167647A CN 201810060700 A CN201810060700 A CN 201810060700A CN 108167647 A CN108167647 A CN 108167647A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- pressure regulator
- regulator valve
- drier
- pressure
- 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.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 164
- 239000003345 natural gas Substances 0.000 title claims abstract description 82
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 27
- 239000000567 combustion gas Substances 0.000 claims abstract description 8
- 239000002737 fuel gas Substances 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 6
- 239000002808 molecular sieve Substances 0.000 description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000446 fuel Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
- F17D1/05—Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of natural gas transportation distribution systems, more particularly to a kind of natural gas is stood to a high-profile, include drier, pressure regulator valve and gas flow meter, drier is located at before pressure regulator valve, tubular heater is additionally provided with before pressure regulator valve, for being heated to the natural gas in pressure piping before pressure regulator valve, the combustion gas feed pipe of the heating furnace connects the heating furnace with the middle pressure pipeline after pressure regulator valve, and the control valve of control heating furnace fuel gas supply amount is provided on feed pipe.The present invention passes through heating furnace, the natural gas before pressure regulator valve can be heated, the whole temperature for promoting natural gas, ensure that the temperature of the natural gas after being depressured by pressure regulator valve will not be too low, and under the transmission effect of natural gas self heat, temperature inside and outside pressure regulator valve is basically identical, and reduce pressure regulator valve influences the situation of service life due to internal/external heating unevenness.
Description
Technical field
The present invention relates to a kind of natural gas transportation distribution system, more particularly to a kind of natural gas is stood to a high-profile.
Background technology
During natural gas transportation, long-distance transport through frequently with high-pressure transport, air pressure often 1.6~4.0MPa it
Between, it can be guaranteed so as to the flow velocity of natural gas, and the gas pressure needed for the terminal user of natural gas is smaller, generally exists
Between 0.01~0.8MPa, therefore needed during natural gas is sent from conveyance conduit to terminal user by pressure regulation.Naturally
The regulating-metering station of gas is exactly by the system of the high-pressure natural gas pressure regulation in gas pipeline to required pressure, and in the mistake of pressure regulation
In journey and there is metering, regulating-metering station generally comprises station and low-key station to a high-profile, and station is generally located on appendix to a high-profile
Point defeated place in road, by high-pressure natural gas pressure regulation to middle pressure natural gas;Low-key station is generally located on terminal, by middle pressure natural gas pressure regulating
To pressure needed for terminal user.
Station includes sequentially connected drier, pressure regulator valve and flowmeter to existing natural gas to a high-profile, and high-pressure natural gas is passing through
It crosses under the pressure regulation effect of pressure regulator valve and becomes middle pressure natural gas, a large amount of heat can be absorbed in this process;Again due in natural gas
Containing some gas phase vapor, gas phase vapor saturated steam water content when temperature is higher(That is every kilogram of gas contains
Water)Saturated steam water content is high during than low temperature, and the gas phase water being precipitated in natural gas is easy in the case of temperature decrease,
Ice occurs in the inside of pressure regulator valve and blocks up phenomenon, it is therefore desirable to which drier is set before pressure regulator valve to absorb its internal water
Point, but gas phase water in natural gas can not be removed completely after drier is set, when the front and rear pressure difference of pressure regulator valve is excessive still
It will appear ice and block up phenomenon.
In the patent of invention for being CN103216700B in Authorization Notice No., a kind of natural gas line noise reduction, anti-icing is disclosed
Stifled and cold energy use device, in the apparatus, is provided with flat heat exchange pipe, by changing in the front and rear pipes and pressure regulator valve of pressure regulator valve
The front and rear pipes of hot flat tube heating pressure regulator valve and pressure regulator valve, prevent pressure regulator valve from ice occur and block up phenomenon.Disadvantage is that gas
Quickly, therefore flat heat exchange pipe is not obvious the heating effect of the natural gas in pipeline to flow velocity in pipeline, mainly to defeated
Pipeline and pressure regulator valve is sent to be heated, and with the pressure of pressure regulation valve regulation gas, the internal temperature of pressure regulator valve is relatively low, and external
Temperature is higher, can form the more apparent temperature difference, larger to the aging effects of pressure regulator valve.
Invention content
It stands to a high-profile the object of the present invention is to provide a kind of natural gas, it is uneven to solve pressure regulator valve internal/external heating in the prior art
The problem of even.
The present invention above-mentioned technical purpose technical scheme is that:
A kind of natural gas is stood to a high-profile, and comprising drier, pressure regulator valve and gas flow meter, drier is located at before pressure regulator valve, pressure regulation
Tubular heater is additionally provided with before valve, the heating furnace is used to heat the natural gas in pressure piping before pressure regulator valve,
The combustion gas feed pipe of the heating furnace is connected with the middle pressure pipeline after pressure regulator valve, and control heating furnace is provided on combustion gas feed pipe
The control valve of fuel gas supply amount.
By using above-mentioned technical proposal, tubular heater can heat the natural gas quickly flowed, before pressure regulator valve
Natural gas is heated, and so as to improve the natural gas temperature after pressure regulator valve pressure regulation, natural gas is avoided to be formed in pressure regulator valve
Ice blocks up phenomenon;And under the transmission effect of natural gas self heat, the temperature inside and outside pressure regulator valve is basically identical, reduces pressure regulation
Valve influences the situation of service life due to internal/external heating unevenness;In addition, tubular heater is using the mesolow after pressure regulation valve regulation
Natural gas is as fuel of heat supply, simple and convenient easy to drawing materials.
Preferably, heating furnace is located at before drier.
By using above-mentioned technical proposal, after drier is arranged on heating furnace, into the natural gas temperature of drier
Higher, the drier of natural gas is the device that natural gas is dried purification in a kind of adsorption capacity using molecular sieve, compared with
The adsorption capacity of molecular sieve is stronger at high temperature, and drying effect is more preferable.
Preferably, the pipeline after heating furnace is divided into two or more, each tube road is gentle comprising drier, pressure regulator valve
Flowmeter body.
By using above-mentioned technical proposal, each tube road after heating furnace can work independently, and can be spare mutually
It replaces.
Preferably, being provided with and communicated with maintenance branch pipe between the drier and pressure regulator valve of each bye-pass, maintenance branch pipe is every
Shut-off valve is provided between a adjacent bye-pass, and the forward and backward of the drier of each bye-pass is provided with shut-off valve, and dry
The forward and backward shut-off valve of device is located at before maintenance branch pipe.
By using above-mentioned technical proposal, when the drier of a certain bye-pass blocks, closing fault can be passed through
Shut-off valve, the shut-off valve overhauled on branch pipe opened towards on defective pipe on pipeline before and after drier, in this way other branch pipes
Natural gas of the road after filtration drying can enter in defective pipe, while be also capable of the drier of trouble shooting pipeline, no
Defective pipe gas supply can be caused to influence.
Preferably, odorization machine is also included, the pipeline connection after the outlet pipe and pressure regulator valve of odorization machine.
By using above-mentioned technical proposal, odorization machine can add foul smell to the natural gas filling in natural gas line, make natural
Gas has stink, natural gas leakage occurs in terminal or transmission process in this way, can be perceived by people at the first time.
Preferably, gas flow is calculated as gas turbine meter.
Preferably, the front and rear ends of pressure regulator valve are both provided with pressure gauge and thermometer.
By using above-mentioned technical proposal, the pressure and temperature before and after pressure regulator valve can be accurately monitored, in time adjustment heating
The heating temperature of stove and the regulating degree of pressure regulator valve.
Preferably, the front and rear ends of drier are both provided with pressure gauge.
It, can be according to the pressure differential of pressure gauge before and after drier, accurate judgement drier by using above-mentioned technical proposal
Whether block.
In conclusion the present invention has following technique effect:
1. by heating furnace, the natural gas before pressure regulator valve can be heated, the whole temperature for promoting natural gas ensures by pressure regulation
The temperature of natural gas after valve decompression will not be too low, and under the transmission effect of natural gas self heat, inside and outside pressure regulator valve
Temperature is basically identical, and reduce pressure regulator valve influences the situation of service life due to internal/external heating unevenness;
2. heating furnace uses the natural gas after pressure regulator valve pressure regulation to be risen as fuel to the natural gas in pressure regulator valve preceding pipeline
Temperature simply and easily solves the problems, such as furnace fuel supply.
Description of the drawings
Fig. 1 is the pipeline arrangement general flow chart of the present embodiment.
In figure, 1, drier;2nd, pressure regulator valve;3rd, gas flowmeter;4th, heating furnace;41st, combustion gas feed pipe;42nd, control valve;
5th, branch pipe is overhauled;6th, shut-off valve;7th, odorization machine.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing.The identical reference numeral of wherein identical parts
It represents.It should be noted that word "front", "rear" used in the following description, "left", "right", " on ", " under ", " bottom surface " and
" top surface " refers to the direction in attached drawing, and word " interior " and " outer " are referred respectively to towards or away from particular elements geometric center
Direction.
As shown in Figure 1, a kind of natural gas is stood to a high-profile, the heating furnace for setting gradually and being connected by pipeline from front to back is included
4th, drier 1,2 and gas flow meter 3 of pressure regulator valve, are high pressure gas pipeline before heating furnace 4, air pressure 1.6~4.0MPa it
Between, it is heated after natural gas by drier 1 drying after removal natural gas in moisture, adjusted later by pressure regulator valve 2
High-pressure natural gas is adjusted to middle pressure, is sent to low-key station later by the pressure of natural gas.Pressure regulator valve 2, will be high during pressure regulation
Pressure natural gas is adjusted to middle pressure natural gas, this will absorb a large amount of heat in the process, once the temperature of pressure regulator valve 2 is too low, naturally
Vapor in gas will be condensed and can be frozen, and generating ice in the exit of pressure regulator valve 2 blocks up phenomenon, heating furnace 4 and drier 1
Setting be exactly in order to prevent ice block up phenomenon.Drier 1 is for the moisture in dry natural gas, and heating furnace 4 is to pass through heating
Natural gas promotes the bulk temperature of natural gas, natural gas is prevented to be down to freezing point.Pass through the whole temperature for promoting natural gas of heater 4
Degree, enable to pressure regulator valve 2 export natural gas also have certain temperature, heat transmit under the action of pressure regulator valve 2 from it is interior to
Outer temperature is all than more uniform.
The drier of diversified forms and model can be used in drier 1, and drier 1 is using molecular-sieve type in the present embodiment
Drier is the prior art, can refer to the patent application application No. is 201510246058.9.Molecular-sieve type drier is to utilize
Natural gas is dried the device of purification in the adsorption capacity of molecular sieve, and the adsorption capacity of molecular sieve is more at a higher temperature
By force, drying effect is more preferable, therefore drier 1 is arranged on after heating furnace 4 can reach better drying effect.Certainly, such as
Drier 1 can also be arranged on before heating furnace 4 by fruit drier 1 using the drying mode of other forms.
Heating furnace 4 is using tubular heater, and concrete structure can refer to Authorization Notice No. as CN105180653B, tubular type
Heating furnace is capable of the gas or liquid of effectively hot high velocity, it is preferable that the combustion gas feed pipe 41 and pressure regulator valve of heating furnace 4
Middle pressure pipeline connection after 2, fuel of the middle pressure natural gas as heating furnace 4 after such adjusting of pressure regulator valve 2, to heating furnace 4
Heat supply is gathered materials on the spot.The control valve 42 of control fuel gas supply amount on combustion gas feed pipe 41 can be set, tempering can also be set
Valve etc..
Pipeline after heating furnace 4 can be divided into the pipeline of two or two or more, later each bye-pass convergence, every
The diameter of each pipeline can be reduced in this way, shares transport comprising drier 1,2 and gas flow meter 3 of pressure regulator valve on pipeline
Pressure, while in the case of a bye-pass failure, the work of other pipelines will not be influenced, it ensure that natural gas was stood to a high-profile
Continue pressure regulation transport capacity.
Since the probability that drier 1 breaks down in natural gas is stood to a high-profile is higher, and drier 1 once breaks down,
Entire tap line will be stopped, can be in the drier 1 and pressure regulator valve of each bye-pass to avoid such case
Maintenance branch pipe 5 is provided with and communicated between 2, maintenance branch pipe 5 is both provided with shut-off valve 6 between each adjacent bye-pass, each
The forward and backward of drier 1 is also equipped with shut-off valve 6, and the forward and backward shut-off valve 6 of each drier 1 is located at before maintenance branch pipe 5.When
When the drier 1 of defective pipe breaks down, the forward and backward shut-off valve 6 of closing fault pipeline drier 1 is opened on maintenance branch pipe 5
Other tap lines lead to the shut-off valve 6 of defective pipe, ensure that other tap lines enter through 1 dried natural gas of drier
Defective pipe, it is ensured that defective pipe is also at operating status, reduces influence of the drier 1 to whole system, while also can
It is enough that the drier 1 of defective pipe is overhauled.
The common failure of drier 1 is pipeline blockage, judges whether drier 1 blocks for convenience, can be dry
The front and rear ends setting pressure gauge of dry device 1 judges the stopping state of drier 1, pressure by the pressure differential of front and rear pressure gauge
Difference is bigger, and the possibility for occurring blocking is bigger.
The front and rear ends of pressure regulator valve 2 can also be respectively provided with pressure gauge and thermometer.According to the thermometer measure after pressure regulator valve 2
As a result, being adjusted come the heating effect to heating furnace 4, heating furnace 4 can be suitably reduced if the temperature after pressure regulator valve 2 is higher
Heating temperature, in order to avoid cause to waste;If the temperature after pressure regulator valve 2 is told somebody what one's real intentions are, the heating temperature of heating furnace 4 should be increased in time
Degree, in case ice occur blocks up phenomenon.Pressure gauge is to measure the forward and backward pipeline pressure of pressure regulator valve 2, will to meet the pressure after pressure regulation
It asks.
In addition station can also include odorization machine 7 to natural gas to a high-profile, during the outlet pipe of odorization machine 7 is after the pressure regulator valve 2
Press pipeline connection, be most better than each bypass line summarize place after.Odorization machine 7 can add the natural gas filling in natural gas line
Foul smell makes natural gas have stink, natural gas leakage occurs in terminal or transmission process in this way, can be at the first time by people
Discovered.
Gas turbine meter can be used in gas flowmeter 3, is suitble to the measurement of the high flow rate gas flow of mesohigh.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of no creative contribution after this specification is read, but as long as at this
It is all protected in the right of invention by Patent Law.
Claims (8)
1. a kind of natural gas is stood to a high-profile, drier is included(1), pressure regulator valve(2)And gas flow meter(3), drier(1)Positioned at tune
Pressure valve(2)Before, which is characterized in that pressure regulator valve(2)It is additionally provided with tubular heater before(4), the heating furnace(4)For right
Pressure regulator valve(2)Natural gas in preceding pressure piping is heated, the heating furnace(4)Combustion gas feed pipe(41)With pressure regulator valve
(2)Middle pressure pipeline connection later, combustion gas feed pipe(41)On be provided with control heating furnace(4)The control valve of fuel gas supply amount
(42).
2. a kind of natural gas according to claim 1 is stood to a high-profile, which is characterized in that heating furnace(4)Positioned at drier(1)It
Before.
3. a kind of natural gas according to claim 2 is stood to a high-profile, which is characterized in that heating furnace(4)Pipeline later is divided into
Two or more, each tube road includes drier(1), pressure regulator valve(2)And gas flow meter(3).
4. a kind of natural gas according to claim 3 is stood to a high-profile, which is characterized in that the drier of each bye-pass(1)With
Pressure regulator valve(2)Between be provided with and communicated with maintenance branch pipe(5), overhaul branch pipe(5)It is provided with and cuts between each adjacent bye-pass
Only valve(6), and the drier of each bye-pass(1)Forward and backward be provided with shut-off valve(6), and drier(1)Forward and backward cut-off
Valve(6)Positioned at maintenance branch pipe(5)Before.
5. a kind of natural gas according to claim 4 is stood to a high-profile, which is characterized in that also comprising odorization machine(7), odorization machine
(7)Outlet pipe and pressure regulator valve(2)Pipeline connection later.
6. a kind of natural gas according to claim 5 is stood to a high-profile, which is characterized in that gas flowmeter(3)For gas-turbine
Flowmeter.
7. a kind of natural gas according to claim 6 is stood to a high-profile, which is characterized in that pressure regulator valve(2)Front and rear ends be all provided with
It is equipped with pressure gauge and thermometer.
8. a kind of natural gas according to claim 7 is stood to a high-profile, which is characterized in that drier(1)Front and rear ends be all provided with
It is equipped with pressure gauge.
Priority Applications (1)
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CN201810060700.8A CN108167647A (en) | 2018-01-22 | 2018-01-22 | A kind of natural gas is stood to a high-profile |
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CN201810060700.8A CN108167647A (en) | 2018-01-22 | 2018-01-22 | A kind of natural gas is stood to a high-profile |
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CN108167647A true CN108167647A (en) | 2018-06-15 |
Family
ID=62515217
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CN201810060700.8A Pending CN108167647A (en) | 2018-01-22 | 2018-01-22 | A kind of natural gas is stood to a high-profile |
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Cited By (3)
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CN110873286A (en) * | 2019-11-21 | 2020-03-10 | 西安交通大学 | Multiple air source supply device for high-pressure large-flow gas experiment |
CN110953482A (en) * | 2019-12-16 | 2020-04-03 | 云南云铝海鑫铝业有限公司 | Air pipe system for maintenance of aluminum electrolysis workshop without stopping air |
CN116719267A (en) * | 2023-08-10 | 2023-09-08 | 哈尔滨商业大学 | RTU-based oil gas storage and transportation control system |
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