CN104791601B - Equipment selection method for CNG (compressed natural gas) filling substation - Google Patents
Equipment selection method for CNG (compressed natural gas) filling substation Download PDFInfo
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- CN104791601B CN104791601B CN201510185389.6A CN201510185389A CN104791601B CN 104791601 B CN104791601 B CN 104791601B CN 201510185389 A CN201510185389 A CN 201510185389A CN 104791601 B CN104791601 B CN 104791601B
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Abstract
The invention relates to an equipment selection method for a CNG (compressed natural gas) filling substation, and mainly solves a problem of single and inaccurate equipment selection mode of a CNG filling substation in the prior art. The equipment selection method for the CNG filling substation comprises the following steps: determining the daily gas-filling capacity of a gas-filling station, the station area, whether the gas-filling time is focused or not, the shutdown influence extent and the mounting position of a compressor; according to formula calculation and engineering requirements, obtaining parameter requirements of major equipment, namely the compressor, a sequential control panel, gas storage equipment and a gas-filling machine, of the gas-filling station. With the adoption of the technical scheme, the method better solves the problem and can be used for equipment selection of the CNG filling substation.
Description
Technical field
The present invention relates to a kind of cng air entraining substation Equipments Choosing Method.
Background technology
Compressed natural gas (compressed natural gas, cng) compares gasoline and diesel oil have obvious price and
Environment-friendly advantage, therefore natural gas used for automobile quickly grow in recent years, and China has built substantial amounts of cng gas station, and main users are city
City's taxi, buses and small part private car.
Cng air entraining substation is the construction model in domestic many cities, is particularly well-suited to lack the position of building a station of gas distributing system
Put.Cng substation source of the gas is provided by the mother station of near cities, is transported to gas station by long-tube trailer.
The equipment of cng air entraining substation mainly has: mechanical hydraulic piston type compressor, sequential control disk, gas bomb gas storage
Well, filling machine etc..The lectotype selection of cng air entraining substation is generally chosen by experience, equipment disposal ability therefore occurs and adds
The unmatched situation of demand, the running status of the equipment difficult to reach optimum of gas station are runed in gas station.
At present both at home and abroad and the publication independent of cng air entraining substation Equipments Choosing Method.
Content of the invention
The technical problem to be solved is that in prior art, cng air entraining substation lectotype selection mode is single, inaccurate
True problem, provides a kind of new cng air entraining substation Equipments Choosing Method.The method is used in cng air entraining substation lectotype selection,
Have that cng air entraining substation lectotype selection mode is various, accurate advantage.
For solving the above problems, the technical solution used in the present invention is as follows: a kind of cng air entraining substation Equipments Choosing Method,
Comprise the steps:
A) input condition and basic parameter are determined:
(1) determine gas station day aerating ability, clearly plan to build the day of cng air entraining substation by engine request and Field Research
Average aerating amount q0, gas station per day aerating amount determines by following two methods:
A) directly give numerical value q0；
B) by type and the quantity survey (surveying) of aerating vehicle, type of vehicle and quantity are respectively as follows: taxi x1, buses x2,
Passenger train x3, other vehicles gas consumption q4, computing formula is:
q0=30*x1+100*x2+100*x3+q4；
(2) determine the area s that builds a station；
(3) determine whether the aerating time period concentrates, if the vehicle aerating time, how in certain several fixed time period, selects
For concentrating, gas station working time day t is based on 10 hours；Otherwise it is chosen as disperseing, gas station working time day t presses 16 hours
Meter；
(4) determine impact size of stopping transport；
(5) determine the installation site of compressor, according to engineering specifications, compressor can be indoor location or outdoor mounted, room
Interior installation need not consider shelter, and the need of outdoor mounted consider shelter and its decrease of noise functions；
(6) determine gas station hour discharge capacity q, gas station hour formula for displacement calculation is: q=q0/t；
B) compressor type selecting:
(1) compressor operating pressure upper and lower limit pmin, pmax, compressor operating upper pressure limit pmax >=20mpa are determined.
Compressor operating low pressure limit pmin≤3mpa；
(2) number of compressors and average discharge qc are determined, the average discharge summation of all compressors of cng gas station need to be more than
Equal to gas station hour discharge capacity q, the calculation of compressor average discharge is: takes the flat of capacity under 3,7,10,15 and 20mpa
Average；Same day aerating ability is less than 10000nm3When, if shutting down, sensitivity is big, select two average discharges to be at least the pressure of q
Contracting machine；If shutting down, sensitivity is little, an average discharge is selected to be at least the compressor of q；Same day aerating ability be 10000～
20000nm3When, if shutting down, sensitivity is big, select two average discharges to be at least the compressor of q；If it is little to shut down sensitivity,
At least q or two average discharge of an average discharge is selected to be at least the compressor of q/2；Same day aerating ability be 20000～
30000nm3When, if shutting down, sensitivity is big, select at least q or two average discharge of two average discharges to be at least q/2's
Compressor；If shutting down, sensitivity is little, at least q/2 or one discharge capacity of two average discharges is selected to be the compressor of q；
(3) type of cooling: the type of cooling of compressor can adopt air-cooled, water-cooled and three kinds of modes of combination cooling, Ge Jipai
Temperature degree need to be less than or equal to 150 DEG C, and ultimate delivery temperature is not higher than 15 DEG C of ambient temperature；
(4) mounting means and its anti-noise require: the mounting means of compressor is indoor location or outdoor mounted, outdoor mounted
Compressor must configure sound insulation shelter, shelter requirements of type selecting is: the noise at the outer 1m of shelter is not more than 75db.
C) sequential control disk type selecting: the hour flow of sequential control disk generally has 1500,2000,2500,3000nm3Several
Kind, according to calculated hour discharge capacity q, choose corresponding specification upwards, sequential control disk is chosen as pneumatic type；
D) gas storage equipment selection method: gas storage equipment can be chosen as gas bomb group or gas storage well according to project situation, point
For low pressure, high pressure, three sections of middle pressure, cng substation directly adopts long-tube trailer as low pressure stage, and the volume fraction of medium and high pressure is
3:1 or 2:1, single bottle water capacity is equal, is chosen as 2m3Or 3m3；When being individually provided with fixing gas storage facility in cng air entraining substation,
The total measurement (volume) of fixing gas storage facility is not to be exceeded 18m3, stand in the vehicle-mounted bottle group gas storage trailer parked should not be more than 1；Individually
Cng air entraining substation no fixing gas storage facility when, stand in the vehicle-mounted gas bomb group trailer parked should not be more than 2；
E) filling machine type selecting: filling machine is rush-harvesting and rush-planting machine, and filling machine number calculation formula is:
Filling machine quantity=q/ (2*2500)；
F) filling gas station equipment is integrated: if process island area s≤220 square metre, must be chosen to integrated form skid and adds
Gas substation；Discharge column, compressor, gas bomb group, sequential control disk need to be integrated into skid form, filling machine is placed in sled or puts
In the outer individually arrangement of sled；Compressor must be by the way of outdoor mounted；If 220 square metres of process island area s ＞, take
Integration mode or the mode of the independent arrangement of each equipment.
Cng air entraining substation Equipments Choosing Method to this patent description, it should be understood that
(1) the filling gas station equipment selection method of this patent description, mainly for key equipment, does not include to process pipe, joins
Set valve and the requirement of instrument；
(2) parameter being related in the filling gas station equipment selection method of this patent description and regulation etc. are according to gb50156 " automobile
Refueling station design and construction specification " etc. concerned countries standard.
This patent passes through to determine whether gas station day aerating ability, area of building a station, aerating time concentrate, stop transport impact greatly
After the input conditions such as little, compressor installation site, calculated and engine request according to formula, obtain gas station capital equipment i.e.: pressure
The parameter request of the equipment such as contracting machine, sequential control disk, gas storage equipment, filling machine, carried Equipments Choosing Method is built according to gas station
Stand feature, the condition such as day aerating amount, calculated by strict formula, in conjunction with the advanced experience in industry, propose the equipment optimizing
Selecting type scheme, the rational parameter configuration of output requires, and the power that causes the device to is matched with the demand of building a station.This patent device, method exports
Process route and lectotype selection result not unique, result of calculation be given multiple meet require selecting type schemes, by user of service
According to the quality of each scheme of gas station conditions correlation, choose the type selecting result being suitable for the most, achieve preferable technique effect.
Brief description
Fig. 1 is the schematic flow sheet of the method for the invention.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Specific embodiment
[embodiment 1]
Plan to build 10000m3City cng air entraining substation it is allowed to about 200 square metres of area of building a station, the aerating time concentrates, main
Service object is wanted to be taxi and private car.
According to above basic condition, the main equipment selection embodiment of cng substation is as follows:
First, input condition:
(1) day aerating amount is q0=10000m3；
(2) build a station s=200 square metre of area；
(3) the aerating time concentrates, i.e. t=10 hour；
(4) impact of stopping transport is less；
(5) compressor installation site is outdoor mounted；
(6) according to above-mentioned condition, gas station hour discharge capacity q=q can be calculated0/ t=1000nm3/h.
2nd, compressor selection method
(1) according to source of the gas situation, determine that compressor operating pressure limit is: compressor operating upper pressure limit pmax >=
20mpa, lower limit pmin≤3mpa.
(2) compressor total displacement must be more than or equal to gas station hour discharge capacity q, and due to stopping transport, impact is less, and compressor is optional
For separate unit or multiple stage configuration.Consider economy, select single compressor, its average discharge requires as qc >=1000nm3/h.
(3) type of cooling of compressor selects the mode of combination cooling.Meet delivery temperatures at different levels and need to be less than or equal to 150
DEG C, ultimate delivery temperature is not higher than 15 DEG C of ambient temperature.
(4) because area of building a station is less than 220 square metres, compressor must be chosen to outdoor mounted.Therefore sound insulation must be configured
Shelter.Shelter must meet: the noise at the outer 1m of shelter is not more than 75db.
3rd, sequential control disk selection method
The hour discharge capacity of gas station is 1000nm3/ h, the hour flow of sequential control disk generally has 1500,2000,2500,
3000nm3Several, therefore select flow to be 1500nm3The equipment of/h, its working mode selection is pneumatic type.
4th, gas storage equipment selection method
Gas storage equipment elects the gas bomb group of 4 bottles as, and single bottle water capacity elects 2m as3, the ratio of medium and high pressure bottle group is
1:1, that is, respectively using 2 bottles.
5th, filling machine selection method
Filling machine selects rush-harvesting and rush-planting machine, filling machine quantity=10000/ (2*2500)=2.
6th, filling gas station equipment integrated approach
Due to process island area s≤220 square metre, select to use integrated form skid air entraining substation.Select using gas will be unloaded
The skid form that post, compressor, gas bomb group, sequential control disk, filling machine are fully integrated.
[example two]
Plan to build 30000m3Cng air entraining substation it is allowed to about 500 square metres of area of building a station, the aerating time concentrates, and main takes
Business object is taxi and city bus.
According to above basic condition, the main equipment selection embodiment of cng substation is as follows:
First, input condition:
(1) day aerating amount is q0=30000m3；
(2) build a station s=500 square metre of area；
(3) the aerating time concentrates, i.e. t=10 hour；
(4) impact of stopping transport is larger；
(5) compressor installation position selection is outdoor mounted, does not individually build machine room；
(6) according to above-mentioned condition, gas station hour discharge capacity q=q can be calculated0/ t=3000nm3/h.
2nd, compressor selection method
(1) according to source of the gas situation, determine that compressor operating pressure limit is: compressor operating upper pressure limit pmax >=
20mpa, lower limit pmin≤3mpa.
(2) compressor total displacement must be more than or equal to gas station hour discharge capacity q, and due to stopping transport, impact is larger, and compressor configures
For 2.The average discharge of single compressor requires as qc >=1500nm3/h.
(3) type of cooling of compressor selects the mode of combination cooling.Meet delivery temperatures at different levels and need to be less than or equal to 150
DEG C, ultimate delivery temperature is not higher than 15 DEG C of ambient temperature.
(4) because area of building a station is 500 square metres, more than 220 square metres, and compressor room, compressor are not individually built
It is chosen as outdoor mounted.Therefore configure sound insulation shelter for every compressor.Shelter must meet: the noise at the outer 1m of shelter is little
In 75db.
3rd, sequential control disk selection method
The hour discharge capacity of gas station is 3000nm3/ h, the hour flow of sequential control disk generally has 1500,2000,2500,
3000nm3Several, therefore select flow to be 3000nm3The equipment of/h, its working mode selection is pneumatic type.
4th, gas storage equipment selection method
Gas storage equipment elects 4 gas storage wells as, and individual well water capacity elects 3m as3, the ratio of medium and high pressure bottle group is 1:1, that is,
Respectively use 2 wells.
5th, filling machine selection method
Filling machine selects rush-harvesting and rush-planting machine, filling machine quantity=30000/ (2*2500)=6.
6th, filling gas station equipment integrated approach
Because process island area s is more than 220 square metres, may be selected to use integrated form or common mounting means.For the ease of
Maintenance and operation, select common dispersion mounting means, and each tables of equipment alone becomes sled.
Claims (1)
1. a kind of cng air entraining substation Equipments Choosing Method, comprises the steps:
A) input condition and basic parameter are determined:
(1) determine gas station day aerating ability, the per day of cng air entraining substation is clearly planned to build by engine request and Field Research
Aerating amount q0, gas station per day aerating amount determines by following two methods:
A) directly give numerical value q0；
B) by type and the quantity survey (surveying) of aerating vehicle, type of vehicle and quantity are respectively as follows: taxi x1, buses x2, passenger traffic
Car x3, other vehicles gas consumption q4, computing formula is:
q0=30*x1+100*x2+100*x3+q4；
(2) determine the process island area s that builds a station；
(3) determine whether the aerating time period concentrates, if the vehicle aerating time how in certain several fixed time period, is chosen as collecting
In, gas station working time day t is based on 10 hours；Otherwise it is chosen as disperseing, gas station working time day t is based on 16 hours；
(4) determine impact size of stopping transport；
(5) determine the installation site of compressor, according to engineering specifications, compressor can be indoor location or outdoor mounted, indoor peace
Dress need not consider shelter, and the need of outdoor mounted consider shelter and its decrease of noise functions；
(6) determine gas station hour discharge capacity q, gas station hour formula for displacement calculation is: q=q0/t；
B) compressor type selecting:
(1) compressor operating pressure upper and lower limit pmin, pmax, compressor operating upper pressure limit pmax >=20mpa, compression are determined
Machine minimum working pressure pmin≤3mpa；
(2) number of compressors and average discharge qc are determined, the average discharge summation of all compressors of cng gas station need to be more than or equal to
Gas station hour discharge capacity q, the calculation of compressor average discharge is: takes the average of capacity under 3,7,10,15 and 20mpa
Value；Same day aerating ability is less than 10000nm3When, if shutting down, sensitivity is big, select two average discharges to be at least the compression of q
Machine；If shutting down, sensitivity is little, an average discharge is selected to be at least the compressor of q；Same day aerating ability be 10000～
20000nm3When, if shutting down, sensitivity is big, select two average discharges to be at least the compressor of q；If it is little to shut down sensitivity,
At least q or two average discharge of an average discharge is selected to be at least the compressor of q/2；Same day aerating ability be 20000～
30000nm3When, if shutting down, sensitivity is big, select at least q or two average discharge of two average discharges to be at least q/2's
Compressor；If shutting down, sensitivity is little, at least q/2 or one average discharge of two average discharges is selected to be at least the compression of q
Machine；
(3) type of cooling: the type of cooling of compressor can adopt air-cooled, water-cooled and three kinds of modes of combination cooling, aerofluxuss temperature at different levels
Degree need to be less than or equal to 150 DEG C, and ultimate delivery temperature is not higher than 15 DEG C of ambient temperature；
(4) mounting means and its anti-noise require: the mounting means of compressor is indoor location or outdoor mounted, the pressure of outdoor mounted
Contracting machine must configure sound insulation shelter, and shelter requirements of type selecting is: the noise at the outer 1m of shelter is not more than 75db；
C) sequential control disk type selecting: the hour flow of sequential control disk generally has 1500, and 2000,2500,3000nm3 is several, root
According to calculated hour discharge capacity q, choose corresponding specification upwards, pneumatic type elected as by sequential control disk；
D) gas storage equipment selection method: gas storage equipment is chosen as gas bomb group or gas storage well according to project situation, be divided into low pressure,
Three sections of high pressure, middle pressure, cng substation directly adopts long-tube trailer as low pressure stage, and the volume fraction of medium and high pressure is 3:1 or 2:
1, single bottle water capacity is equal, is 2m3 or 3m3；When being individually provided with fixing gas storage facility in cng air entraining substation, fixing gas storage sets
The total measurement (volume) applied is not to be exceeded 18m3, stand in the vehicle-mounted bottle group gas storage trailer parked should not be more than 1；Individually cng air entraining substation
No fixing gas storage facility when, stand in the vehicle-mounted gas bomb group trailer parked should not be more than 2；
E) filling machine type selecting: filling machine is rush-harvesting and rush-planting machine, and filling machine number calculation formula is:
Filling machine quantity=q/ (2*2500)；
F) filling gas station equipment is integrated: if building a station process island area s≤220 square metre, must be chosen to integrated form skid and adding
Gas substation；Discharge column, compressor, gas bomb group, sequential control disk need to be integrated into skid form, filling machine is placed in sled or puts
In the outer individually arrangement of sled；Compressor must be by the way of outdoor mounted；If building a station 220 square metres of process island area s ＞,
Take the mode that integration mode or each equipment are individually arranged.
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| CN112539338B (en) * | 2019-09-20 | 2022-08-05 | 中国石油化工股份有限公司 | Model selection method for liquid hydrogen supply hydrogenation station equipment |
| CN112539337B (en) * | 2019-09-20 | 2022-08-05 | 中国石油化工股份有限公司 | Model selection method for high-pressure tube bundle vehicle hydrogen supply station equipment |
| CN112539340B (en) * | 2019-09-20 | 2022-07-29 | 中国石油化工股份有限公司 | Water electrolysis hydrogen supply hydrogenation station equipment model selection method |
| CN111832189B (en) * | 2020-07-24 | 2021-09-14 | 重庆通用工业(集团)有限责任公司 | Centrifugal vapor compressor model selection method |
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| CN101839393A (en) * | 2009-12-30 | 2010-09-22 | 中石油昆仑天然气利用有限公司 | Direct gas-filling energy-saving system for CNG (Compressed Natural Gas) primary station and process flows thereof |
| CN201757268U (en) * | 2010-08-17 | 2011-03-09 | 自贡通达机器制造有限公司 | CNG station quick gas filling device |
| US8783307B2 (en) * | 2010-12-29 | 2014-07-22 | Clean Energy Fuels Corp. | CNG time fill system and method with safe fill technology |
| CN103148348B (en) * | 2013-03-22 | 2015-04-29 | 北京伯肯新能源设备有限公司 | Electronic type CNG (Compressed Natural Gas) gas charging station sequence control panel |
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