CN104197184A - LNG vaporizing, pressure-regulating and metering prizing tool and operation method thereof - Google Patents
LNG vaporizing, pressure-regulating and metering prizing tool and operation method thereof Download PDFInfo
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- CN104197184A CN104197184A CN201410405216.6A CN201410405216A CN104197184A CN 104197184 A CN104197184 A CN 104197184A CN 201410405216 A CN201410405216 A CN 201410405216A CN 104197184 A CN104197184 A CN 104197184A
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Abstract
The invention discloses an LNG vaporizing, pressure-regulating and metering prizing tool which comprises a base; an unloading pressurizing device, an air-heated vaporizer, an electric-heating heater and an air-heated EAG heater are arranged along the length direction of the base in sequence; a first main pipe is horizontally arranged on one side of the unloading pressurizing device; a first air inlet and a first air outlet are formed in two ends of the first main pipe; a second air outlet is formed in the middle of the first main pipe; a second air outlet branch is connected with a natural gas outlet by the air-heated EAG heater; the first air outlet is connected with a first air outlet branch in a conduction manner by a pipeline; the first air outlet branch extends from the second air outlet; the air-heated vaporizer comprises at least one air outlet which is connected to the natural gas outlet by the electric-heating heater; liquid inlet valves are arranged on connection parts of first to third liquid inlets of the air-heated vaporizer and the pipeline. The invention also provides an operation method of the LNG vaporizing, pressure-regulating and metering prizing tool; the working efficient is improved, requirements of different processes can be met, and the service life is long.
Description
Technical field
The present invention relates to skid technical field, specifically a kind of LNG gasification pressure regulation metering skid and operating method thereof.
Background technique
Along with the continuous expansion of social demand, energy problem more and more highlights, along with exploitation and the utilization of rock gas, alleviated energy starved problem, rock gas or green energy resource, pollution-free simultaneously, and the field using is increasing, also more and more abundanter round the equipment of rock gas, the skid of LNG gasification pressure regulation metering is exactly one wherein, but there is inefficiency in current filling station equipment, working life is short, complex structure, and maintenance cost is high, complicated operation, the problem such as dumb.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming of above prior art, LNG gasification pressure regulation metering skid and operating method thereof are proposed, in this technological scheme, be provided with air-heating type gasifier, electric heating type heater and air temperature type EAG heater, can not only increase work efficiency, meet the demand of different process, and can use simultaneously or separately, easy to operate, and the pressurized machine of unloading being provided with, can take care of the pressure difference in line, guarantee normal work, equipment is stable, flexible operation is changeable, cost-saving, working efficiency is high, simple to operate, the reliability of increase equipment and Security, the working life of raising equipment, easy to maintenance, dismounting is simple, reduce costs.
In order to solve the problems of the technologies described above, technological scheme of the present invention is achieved in the following ways: the skid of a kind of LNG gasification pressure regulation metering, comprise base, base is gone up level successively along its length and is provided with the pressurized machine of unloading, air-heating type gasifier, electric heating type heater and air temperature type EAG heater;
The pressurized machine one side level of unloading is provided with on the first supervisor and described the first supervisor and offers the first import and the first air outlet that are positioned at its two ends, and is positioned at second air outlet at its middle part;
Air-heating type gasifier is provided with three liquid entering holes near a side of the pressurized machine of unloading, two branch roads of giving vent to anger are extended by pipeline in the second air outlet, first branch road of giving vent to anger is connected with the first to the 3rd liquid entering hole conducting of air-heating type gasifier respectively, and second branch road of giving vent to anger connects gas outlet by air temperature type EAG heater;
The first air outlet is connected by pipeline and the second air outlet extended first branch road conducting of giving vent to anger, air-heating type gasifier comprises that at least one air outlet and air outlet are connected to gas outlet through electric heating type heater, and the first to the 3rd liquid entering hole of air-heating type gasifier and the joint of pipeline are respectively arranged with a liquid flowing valve.
Like this, in this technological scheme, be provided with air-heating type gasifier, electric heating type heater and air temperature type EAG heater, can not only increase work efficiency, meet the demand of different process, and can use simultaneously or separately, easy to operate, and the pressurized machine of unloading being provided with, can take care of the pressure difference in line, guarantees normal work, equipment is stable, flexible operation is changeable, cost-saving, and working efficiency is high, simple to operate, the reliability of increase equipment and Security, the working life of improving equipment, easy to maintenance, dismounting is simple, reduces costs.
The present invention also provides the operating method of a kind of LNG gasification pressure regulation metering skid, and this operating method is carried out according to the following steps:
Step (1): while use for the first time, guarantee that base is fixed on horizontal plane, first purge pipeline with inert gas with the pressure of 1-3Mpa and discharge foreign material, keep 30-40min, and park 5min with being coated with the wooden target plate of white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
Step (2): the liquid feed valve on tank car is connected with the first import, the valve of opening the pressurized machine of unloading with the aperture of 1-3%/s carries out precooling to pipeline, time is 8-10min, then with the pressurized machine of unloading, tank car is increased to 0.7-1.2Mpa, open the aperture of liquid feed valve to 30% on tank car with 2-5%/s aperture, again pipeline is carried out cooling, keep 8-10min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.2-0.65Mpa;
Step (3): when the liquid level of tank car tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, unloaded.
Like this, by rational operating method, first use before use inert gas purge pipeline, can effectively get rid of the foreign material in pipeline, prevent from polluting LNG Liquefied natural gas, cause beyond thought loss, and pipeline is first carried out to precooling, and then precooling, prevent the pipeline Yin Wendu generation that causes frost or destroy the problems such as pipeline that sharply declines, improve the working life of pipeline, cost-saving, simple to operate, and can be according to the demand choice for use air-heating type gasifier of operating mode, in electric heating type heater and air temperature type EAG heater one group or two groups or three groups, can not only be cost-saving, flexible and changeable, the working life of increase equipment, cost-saving, working efficiency is high.
The technological scheme that the present invention further limits is:
The skid of aforesaid LNG gasification pressure regulation metering, thereby the air outlet of air-heating type gasifier is two and two air outlets to be connected with respectively a heating supervisor and to form two heating branch roads, electric heating type heater is connected in parallel between two heating supervisors and four ports of electric heating type heater are responsible for and are connected with two heating by heating valve respectively;
Article two, heating branch road all connect gas outlet and first heating branch road be in series with the first pressure gauge, the second pressure gauge in parallel on the second heating branch road, is provided with one-level relief opening for control two branch roads of giving vent to anger simultaneously and for controlling the first secondary relief opening of giving vent to anger branch road on the second extended pipeline in air outlet.
The skid of aforesaid LNG gasification pressure regulation metering, in the process of unloading, in the time that line pressure is too small, opening electric heating type heater increases line pressure; In the time that line pressure is excessive; The utilization pressurized machine of unloading increases feed liquor mouth pressure on tank car, and the pressure difference of holding tube line pressure and tank car is within 0.2-0.65Mpa.
The skid of aforesaid LNG gasification pressure regulation metering, in the time that air-heating type gasifier can not use, can close the inlet/outlet valve of air-heating type gasifier, and liquid natural gas is delivered directly to the gasification of air temperature type EAG heater.
The operating method of aforesaid LNG gasification pressure regulation metering skid, comprises the following steps:
In step (1), inert nitrogen gas purges pipeline with the pressure of 1Mpa and discharges foreign material, keep 30min, and park 5min with the wooden target plate that is coated with white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
In step (2), the liquid feed valve on tank car is connected with the first import, the valve of opening the pressurized machine of unloading with the aperture of 2%/s carries out precooling to pipeline, time is 9min, then with the pressurized machine of unloading, tank car is increased to 0.7Mpa, open the aperture of liquid feed valve to 30% on tank car with 2%/s aperture, again pipeline is carried out cooling, keep 8min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.2-0.65Mpa;
Liquid level when tank car in step (3) tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, has unloaded.
The operating method of aforesaid LNG gasification pressure regulation metering skid, comprises the following steps:
In step (1), inert nitrogen gas purges pipeline with the pressure of 2Mpa and discharges foreign material, keep 35min, and park 5min with the wooden target plate that is coated with white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
In step (2), the liquid feed valve on tank car is connected with the first import, the valve of opening the pressurized machine of unloading with the aperture of 1%/s carries out precooling to pipeline, time is 8min, then with the pressurized machine of unloading, tank car is increased to 0.8Mpa, open the aperture of liquid feed valve to 30% on tank car with 3%/s aperture, again pipeline is carried out cooling, keep 9min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.6-0.65Mpa;
Liquid level when tank car in step (3) tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, has unloaded.
The operating method of aforesaid LNG gasification pressure regulation metering skid, comprises the following steps:
In step (1), inert nitrogen gas purges pipeline with the pressure of 3Mpa and discharges foreign material, keep 40min, and park 5min with the wooden target plate that is coated with white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
In step (2), the liquid feed valve on tank car is connected with the first import, the valve of opening the pressurized machine of unloading with the aperture of 3%/s carries out precooling to pipeline, time is 10min, then with the pressurized machine of unloading, tank car is increased to 1.0Mpa, open the aperture of liquid feed valve to 30% on tank car with 5%/s aperture, again pipeline is carried out cooling, keep 10min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.5-0.65Mpa;
Liquid level when tank car in step (3) tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, has unloaded.
The invention has the beneficial effects as follows: in this technological scheme, be provided with air-heating type gasifier, electric heating type heater and air temperature type EAG heater, can not only increase work efficiency, meet the demand of different process, and can use simultaneously or separately, easy to operate, and the pressurized machine of unloading being provided with, can take care of the pressure difference in line, guarantee normal work, equipment is stable, and flexible operation is changeable, cost-saving, working efficiency is high, simple to operate, increases reliability and the Security of equipment, the working life of raising equipment, easy to maintenance, dismounting is simple, reduces costs;
By rational operating method, first use before use inert gas purge pipeline, can effectively get rid of the foreign material in pipeline, prevent from polluting LNG Liquefied natural gas, cause beyond thought loss, and pipeline is first carried out to precooling, and then precooling, prevent the pipeline Yin Wendu generation that causes frost or destroy the problems such as pipeline that sharply declines, improve the working life of pipeline, cost-saving, simple to operate, and can be according to the demand choice for use air-heating type gasifier of operating mode, in electric heating type heater and air temperature type EAG heater one group or two groups or three groups, can not only be cost-saving, flexible and changeable, the working life of increase equipment, cost-saving, working efficiency is high.
Brief description of the drawings
Fig. 1 is the structural representation of the designed LNG gasification pressure regulation metering skid of the present invention;
Wherein: 1-base, the 2-pressurized machine of unloading, 3-air-heating type gasifier, 4-electric heating type heater, 401-heats valve, 5-air temperature type EAG heater, 6-first is responsible for, 601-the first import, 602-the first air outlet, 603-the second air outlet, 7-gas outlet, 8-heats supervisor, 9-one-level relief opening, 10-secondary relief opening, 11-the first pressure gauge, 12-the second pressure gauge.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
embodiment 1
As shown in Figure 1, a kind of LNG gasification pressure regulation metering skid that the present embodiment provides, comprises base 1, and base 1 is gone up level successively along its length and is provided with the pressurized machine 2 of unloading, air-heating type gasifier 3, electric heating type heater 4 and air temperature type EAG heater 5; The pressurized machine 2 one side levels of unloading are provided with on the first supervisor 6 and the first supervisor 6 and offer the first import 601 and the first air outlet 602 that are positioned at its two ends, and are positioned at second air outlet 603 at its middle part; Air-heating type gasifier 3 is provided with three liquid entering holes near a side of the pressurized machine 2 of unloading, two branch roads of giving vent to anger are extended by pipeline in the second air outlet 603, first branch road of giving vent to anger is connected with the first to the 3rd liquid entering hole conducting of air-heating type gasifier 3 respectively, and second branch road of giving vent to anger connects gas outlet 7 by air temperature type EAG heater 5; The first air outlet 602 is connected by the branch road conducting of giving vent to anger of pipeline and the second air outlet 603 extended first, air-heating type gasifier 3 comprises that two air outlets and air outlet are connected to gas outlet 7 through electric heating type heater 4, and the first to the 3rd liquid entering hole of air-heating type gasifier 3 and the joint of pipeline are respectively arranged with a liquid flowing valve 301; Thereby the air outlet of air-heating type gasifier 3 is two and two air outlets to be connected with respectively a heating supervisor 8 and to form two heating branch roads, electric heating type heater 4 is connected in parallel between two heating supervisors 8 and four ports of electric heating type heater 4 are responsible for 8 by heating valve 401 with two heating respectively and are connected;
Article two, heating branch road all connect gas outlet 7 and first heating branch road be in series with the first pressure gauge 11, on the second heating branch road, be provided with one-level relief opening 9 for control two branch roads of giving vent to anger simultaneously on the second pressure gauge 12, the second extended pipelines in air outlet 603 in parallel and for controlling the first secondary relief opening 10 of giving vent to anger branch road.
embodiment 2
Device in the present embodiment is identical with embodiment's 1 structure, and the operating method of the LNG gasification pressure regulation metering skid of the present embodiment is carried out according to the following steps:
Step (1): while use for the first time, guarantee that base 1 is fixed on horizontal plane, first purge pipeline with inert nitrogen gas with the pressure of 1Mpa and discharge foreign material, keep 30min, and park 5min with being coated with the wooden target plate of white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
Step (2): the liquid feed valve on tank car is connected with the first import 601, the valve of opening the pressurized machine 2 of unloading with the aperture of 2%/s carries out precooling to pipeline, time is 9min, then with the pressurized machine 2 of unloading, tank car is increased to 0.7Mpa, open the aperture of liquid feed valve to 30% on tank car with 2%/s aperture, again pipeline is carried out cooling, keep 8min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.2-0.65Mpa;
Step (3): when the liquid level of tank car tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, unloaded.
embodiment 3
Device in the present embodiment is identical with embodiment's 1 structure, and the operating method of the LNG gasification pressure regulation metering skid of the present embodiment is carried out according to the following steps:
Step (1): while use for the first time, guarantee that base 1 is fixed on horizontal plane, first purge pipeline with inert nitrogen gas with the pressure of 2Mpa and discharge foreign material, keep 35min, and park 5min with being coated with the wooden target plate of white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
Step (2): the liquid feed valve on tank car is connected with the first import 601, the valve of opening the pressurized machine 2 of unloading with the aperture of 1%/s carries out precooling to pipeline, time is 8min, then with the pressurized machine 2 of unloading, tank car is increased to 0.8Mpa, open the aperture of liquid feed valve to 30% on tank car with 3%/s aperture, again pipeline is carried out cooling, keep 9min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.6-0.65Mpa;
Step (3): when the liquid level of tank car tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, unloaded.
embodiment 4
Device in the present embodiment is identical with embodiment's 1 structure, and the operating method of the LNG gasification pressure regulation metering skid of the present embodiment is carried out according to the following steps:
Step (1): while use for the first time, guarantee that base 1 is fixed on horizontal plane, first purge pipeline with inert nitrogen gas with the pressure of 3Mpa and discharge foreign material, keep 40min, and park 5min with being coated with the wooden target plate of white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
Step (2): the liquid feed valve on tank car is connected with the first import 601, the valve of opening the pressurized machine 2 of unloading with the aperture of 3%/s carries out precooling to pipeline, time is 10min, then with the pressurized machine 2 of unloading, tank car is increased to 1.0Mpa, open the aperture of liquid feed valve to 30% on tank car with 5%/s aperture, again pipeline is carried out cooling, keep 10min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.5-0.65Mpa;
Step (3): when the liquid level of tank car tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, unloaded.
Like this, by being provided with air-heating type gasifier, electric heating type heater and air temperature type EAG heater in technological scheme of the present invention, can not only increase work efficiency, meet the demand of different process, and can use simultaneously or separately, easy to operate, and the pressurized machine of unloading being provided with, can take care of the pressure difference in line, guarantees normal work, equipment is stable, flexible operation is changeable, cost-saving, and working efficiency is high, simple to operate, the reliability of increase equipment and Security, the working life of improving equipment, easy to maintenance, dismounting is simple, reduces costs.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposing according to the present invention, and any change of doing on technological scheme basis, within all falling into protection domain of the present invention.
Claims (8)
1. LNG gasification pressure regulation metering skid, comprise base (1), it is characterized in that: described base (1) is gone up level successively along its length and is provided with the pressurized machine of unloading (2), air-heating type gasifier (3), electric heating type heater (4) and air temperature type EAG heater (5);
Described pressurized machine (2) the one side levels of unloading are provided with on the first supervisor (6) and described the first supervisor (6) and offer the first import (601) and the first air outlet (602) that are positioned at its two ends, and are positioned at second air outlet (603) at its middle part;
Described air-heating type gasifier (3) is provided with three liquid entering holes near a side of the pressurized machine (2) of unloading, two branch roads of giving vent to anger are extended by pipeline in described the second air outlet (603), first branch road of giving vent to anger is connected with the first to the 3rd liquid entering hole conducting of air-heating type gasifier (3) respectively, and second branch road of giving vent to anger connects gas outlet (7) by air temperature type EAG heater (5);
Described the first air outlet (602) is connected by the branch road conducting of giving vent to anger of pipeline and the second air outlet (603) extended first, described air-heating type gasifier (3) comprises that at least one air outlet and described air outlet are connected to gas outlet (7) through electric heating type heater (4), and the first to the 3rd liquid entering hole of air-heating type gasifier (3) and the joint of pipeline are respectively arranged with a liquid flowing valve (301).
2. LNG gasification pressure regulation metering according to claim 1 skid, it is characterized in that: the air outlet of described air-heating type gasifier (3) be two and two air outlets be connected with respectively a heating supervisor (8) thus form two heating branch roads, described electric heating type heater (4) is connected in parallel between two heating supervisors (8) and four ports of electric heating type heater (4) are responsible for (8) by heating valve (401) with two heating respectively and are connected;
Described two heating branch roads all connect gas outlet (7) and the first heating branch road is in series with the first pressure gauge (11), the second pressure gauge in parallel (12) on the second heating branch road, is provided with one-level relief opening (9) for control two branch roads of giving vent to anger simultaneously and for controlling the first secondary relief opening (10) of giving vent to anger branch road on the extended pipeline in described the second air outlet (603).
3. the operating method based on LNG gasification pressure regulation metering claimed in claim 1 skid, is characterized in that, comprises the steps:
Step (1): while use for the first time, guarantee that base (1) is fixed on horizontal plane, first purge pipeline with inert gas with the pressure of 1-3Mpa and discharge foreign material, keep 30-40min, and park 5min with being coated with the wooden target plate of white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
Step (2): the liquid feed valve on tank car is connected with the first import (601), the valve of opening the pressurized machine of unloading (2) with the aperture of 1-3%/s carries out precooling to pipeline, time is 8-10min, then with the pressurized machine of unloading (2), tank car is increased to 0.7-1.2Mpa, open the aperture of liquid feed valve to 30% on tank car with 2-5%/s aperture, again pipeline is carried out cooling, keep 8-10min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.2-0.65Mpa;
Step (3): when the liquid level of tank car tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, unloaded.
4. the operating method of LNG gasification pressure regulation metering according to claim 3 skid, is characterized in that: in the process of unloading, in the time that line pressure is too small, opening electric heating type heater (4) increases line pressure; In the time that line pressure is excessive; The utilization pressurized machine (2) of unloading increases feed liquor mouth pressure on tank car, and the pressure difference of holding tube line pressure and tank car is within 0.2-0.65Mpa.
5. the operating method of LNG gasification pressure regulation metering according to claim 3 skid, air-heating type gasifier (3) it is characterized in that: in the time that can not use, can close the inlet/outlet valve of air-heating type gasifier (3), liquid natural gas is delivered directly to air temperature type EAG heater (5) gasification.
6. the operating method of LNG gasification pressure regulation metering according to claim 3 skid, is characterized in that:
In step (1), inert nitrogen gas purges pipeline with the pressure of 1Mpa and discharges foreign material, keep 30min, and park 5min with the wooden target plate that is coated with white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
In step (2), the liquid feed valve on tank car is connected with the first import (601), the valve of opening the pressurized machine of unloading (2) with the aperture of 2%/s carries out precooling to pipeline, time is 9min, then with the pressurized machine of unloading (2), tank car is increased to 0.7Mpa, open the aperture of liquid feed valve to 30% on tank car with 2%/s aperture, again pipeline is carried out cooling, keep 8min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.2-0.65Mpa;
Liquid level when tank car in step (3) tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, has unloaded.
7. the operating method of LNG gasification pressure regulation metering according to claim 3 skid, is characterized in that:
In step (1), inert nitrogen gas purges pipeline with the pressure of 2Mpa and discharges foreign material, keep 35min, and park 5min with the wooden target plate that is coated with white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
In step (2), the liquid feed valve on tank car is connected with the first import (601), the valve of opening the pressurized machine of unloading (2) with the aperture of 1%/s carries out precooling to pipeline, time is 8min, then with the pressurized machine of unloading (2), tank car is increased to 0.8Mpa, open the aperture of liquid feed valve to 30% on tank car with 3%/s aperture, again pipeline is carried out cooling, keep 9min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.6-0.65Mpa;
Liquid level when tank car in step (3) tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, has unloaded.
8. the operating method of LNG gasification pressure regulation metering according to claim 3 skid, is characterized in that:
In step (1), inert nitrogen gas purges pipeline with the pressure of 3Mpa and discharges foreign material, keep 40min, and park 5min with the wooden target plate that is coated with white paint at all air outlets place, if foreign is qualified, otherwise continue to purge until all outlet ports does not have foreign matter to fly out;
In step (2), the liquid feed valve on tank car is connected with the first import (601), the valve of opening the pressurized machine of unloading (2) with the aperture of 3%/s carries out precooling to pipeline, time is 10min, then with the pressurized machine of unloading (2), tank car is increased to 1.0Mpa, open the aperture of liquid feed valve to 30% on tank car with 5%/s aperture, again pipeline is carried out cooling, keep 10min, then open liquid feed valve completely, the pressure difference of line pressure and tank car is remained on to 0.5-0.65Mpa;
Liquid level when tank car in step (3) tends to be zero-bit, when the pressure on tank car equates with the pressure on storage tank simultaneously, has unloaded.
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| CN2844640Y (en) * | 2005-09-07 | 2006-12-06 | 常州信力燃气设备有限公司 | Storage tank prized LNG gas-supply terminal |
| CN102207244A (en) * | 2011-05-13 | 2011-10-05 | 天津华迈燃气装备股份有限公司 | Skid-mounted-type liquefied natural gas filling device for automobiles |
| CN202791322U (en) * | 2012-07-10 | 2013-03-13 | 佰焰(天津)燃气科技发展有限公司 | LNG (liquefied natural gas) gasification station |
| CN202791324U (en) * | 2012-09-05 | 2013-03-13 | 上海伊丰新能源科技有限公司 | Equipment for achieving whole skid mounting of processing equipment of gas station |
| CN203671232U (en) * | 2013-12-26 | 2014-06-25 | 四川金科环保科技有限公司 | Integrated LNG (liquefied natural gas) storing and filling pry |
| CN203671243U (en) * | 2013-12-26 | 2014-06-25 | 四川金科环保科技有限公司 | LNG pump valve pry |
| CN204083783U (en) * | 2014-08-15 | 2015-01-07 | 大丰市大昌燃气设备有限公司 | The skid of a kind of LNG gasification pressure regulation metering |
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| CN104197184B (en) | 2016-04-13 |
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Address after: 214113 group seven, democratic village, Liu Zhuang Town, Dafeng District, Yancheng City, Jiangsu Patentee after: Jiangsu Dachang Gas Equipment Co. Ltd. Address before: 214113 group seven, democratic village, Liu Zhuang Town, Dafeng City, Yancheng City, Jiangsu Patentee before: DAFENG DACHANG GAS EQUIPMENT CO., LTD. |
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