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 PDF

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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
Application number
CN201810060700.8A
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Chinese (zh)
Inventor
张闻昊
郑雄
郑一雄
王子墨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Dongfang Tong Jie Gas Co Ltd
Original Assignee
Beijing Dongfang Tong Jie Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Dongfang Tong Jie Gas Co Ltd filed Critical Beijing Dongfang Tong Jie Gas Co Ltd
Priority to CN201810060700.8A priority Critical patent/CN108167647A/en
Publication of CN108167647A publication Critical patent/CN108167647A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00Pipe-line systems
    • F17D1/02Pipe-line systems for gases or vapours
    • F17D1/04Pipe-line systems for gases or vapours for distribution of gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00Pipe-line systems
    • F17D1/02Pipe-line systems for gases or vapours
    • F17D1/04Pipe-line systems for gases or vapours for distribution of gas
    • F17D1/05Preventing freezing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00Arrangements for supervising or controlling working operations
    • F17D3/01Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00Arrangements for supervising or controlling working operations
    • F17D3/12Arrangements for supervising or controlling working operations for injecting a composition into the line
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00Arrangements for supervising or controlling working operations
    • F17D3/18Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product

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  • 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

A kind of natural gas is stood to a high-profile
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.
CN201810060700.8A 2018-01-22 2018-01-22 A kind of natural gas is stood to a high-profile Pending CN108167647A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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CN207975475U (en) * 2018-01-22 2018-10-16 北京东方通捷燃气有限责任公司 A kind of natural gas lofty tone station

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN116719267B (en) * 2023-08-10 2023-10-24 哈尔滨商业大学 RTU-based oil gas storage and transportation control system

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