CN2844641Y

CN2844641Y - Bottle prized LNG gas-supply terminal

Info

Publication number: CN2844641Y
Application number: CN 200520075278
Authority: CN
Inventors: 郑; 叶健明
Original assignee: CHANGZHOU XINLI GAS EQUIPMENT Co Ltd
Current assignee: Terrence Energy Co., Ltd.
Priority date: 2005-09-07
Filing date: 2005-09-07
Publication date: 2006-12-06
Anticipated expiration: 2015-09-07

Abstract

The utility model relates to a bottle group type prized LNG gas supplying terminal. The utility model comprises a bottle group which is composed of a plurality of low-temperature steel bottles, a bottle group prizer and a gasifying voltage regulation metering and odorizing prizer, wherein the low-temperature steel bottles are connected with the bottle group prizer through pipe lines; the output end of the bottle group prizer is connected with the input end of the gasifying voltage regulation metering and odorizing prizer, and a safety valve is arranged on the bottle group prizer; the gasifying voltage regulation metering and odorizing prizer is integrated by a BOG gasifier, a safety valve, a safety diffusing pipe passage, an odorizing machine, a main voltage regulator, an air temperature type gasifier, a flow meter and an electrical heating type gasifier. The utility model has the advantages of compact structure, small occupation areas, convenient installation and disassembly and good safety performance, and the utility model can be repeatedly used for many times and many places.

Description

Bottle group type skid-mounted LNG air feed terminal

Technical field

The utility model belongs to LNG Liquefied natural gas (LNG) transmission ﹠ distribution technology field, specifically, relates to a kind of bottle of group type skid-mounted LNG air feed terminal, mainly is to be supplied to users such as middle samll cities and towns, industry, gas station, gasification.

Background technique

At present LNG be the main transmission ﹠ distribution mode of LNG Liquefied natural gas be LNG receiving station gasification back by high-in-the low-pressure pipe network transmission ﹠ distribution, the design gas supply capacity that this plenum system is general is all bigger, the design gas supply capacity of the LNG air feed equipment of China's maximum reaches 120,000 Nm at present ³/ day.

Yet this plenum system also has its bigger shortcoming.One, this transmission ﹠ distribution mode require to use nearer apart from the unloading of imported L NG ground, bigger downstream gas consumption is arranged simultaneously, otherwise Economy is not high.Therefore, it is applicable to that relatively coastal population is many, economic flourishing area.Yet along with finishing of West-East National Gas Transmission Project, general area that are fairly developed economically has all been brought into use western gas, and therefore, the market share is subjected to certain influence.And vast hinterland, though the usage requirement of rock gas is also arranged, general gas consumption is less, economic ability to take the burden a little less than, simultaneously with the gas point dispersion that distributes, be not suitable for the structure of large-scale pipe network system.Its two, generally adopt the air feed equipment of this kind design all bigger, floor space is also bigger.More concerning population, the economic flourishing area, land resources is more rare, the big project of not too suitable development floor space, and this has also restricted the use of this natural gas transmission and distribution mode.

The disclosed a kind of LNG Liquefied natural gas air feeder of Chinese patent CN1332327A has just solved the low-temperature storage problem of LNG Liquefied natural gas and the recovery problem of boil-off gas, still exists floor space big, problems such as installing/dismounting inconvenience.

Summary of the invention

The purpose of this utility model provides a kind of compact structure, and floor space is little, easy installation and removal, and how Safety performance is good, can be repeatedly, reusable bottle group type skid-mounted LNG air feed terminal.

The technological scheme that realizes above-mentioned purpose is: a kind of bottle of group type skid-mounted LNG air feed terminal, comprise the bottle group that a plurality of low temperature steel cylinders are formed, comprise that also bottle group sledge and gasification pressure regulation metering add smelly sledge, the low temperature steel cylinder is connected with bottle group sledge by pipeline, the output terminal of bottle group sledge is connected with the input end that gasification pressure regulation metering adds smelly sledge, is furnished with safety valve on the bottle group sledge, gasification pressure regulation metering add smelly sledge by BOG vaporizer, safety valve, that safety is diffused pipeline, odorization machine, main voltage regulator, air-heating type gasifier, flowmeter and electric heating type vaporizer is integrated.

After adopting technique scheme, the air feed terminal becomes a kind of modular system, becomes sledge after the function module that the component composition of multiple function is certain, thereby compact structure, and floor space is little, and easy installation and removal.It stresses the standardization and the versatility of system module, and the different equal modules of station quantity available of different flow is formed in parallel, thus can be repeatedly, how reuse.It mainly utilizes the heat of surrounding environment to gasify simultaneously, and is auxiliary with a spot of electric energy, can reduce construction cost and operating cost.Rely on safety valve and the effect of diffusing pipeline safely, improved the Safety performance of air feed terminal.

Description of drawings

Fig. 1 is a process flow diagram of the present utility model;

Fig. 2 is an equipment organigram of the present utility model;

Fig. 3 is the schematic top plan view of Fig. 2.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

As Fig. 1,2, shown in 3, a kind of bottle of group type skid-mounted LNG air feed terminal, comprise the bottle group that a plurality of low temperature steel cylinders 3 are formed, comprise that also bottle group sledge 1 and gasification pressure regulation metering add smelly sledge 2, low temperature steel cylinder 3 is connected with bottle group sledge 1 by pipeline, the output terminal of bottle group sledge 1 is connected with the input end that gasification pressure regulation metering adds smelly sledge 2, be furnished with safety valve 1.1 on the bottle group sledge 1, gasification pressure regulation metering adds smelly sledge 2 by BOG vaporizer 2.1, safety valve 2.2, safety is diffused pipeline 2.3, odorization machine 2.5, main voltage regulator 2.7, air-heating type gasifier 2.9, flowmeter 2.6 and electric heating type vaporizer 2.8 are integrated.

Flowmeter 2.6 adopts turbine flowmeter.It has that the scene indicates that flow shows and the function of teletransmission instantaneous flow, integrated flow, flux signal can be reached that the control room shows, printing.

As shown in Figure 1, 2, 3, the gasification pressure regulation is measured to add on the smelly sledge 2 Safety relief valve 2.4 is housed.Can improve the Security of air feed.

As shown in Figure 1, the gasification pressure regulation is measured to add on the smelly sledge 2 thermometer, temperature transducer and pressure transmitter is housed.Bottle group sledge 1 and gasification pressure regulation metering add on the smelly sledge 2 all is furnished with pressure meter, can on-the-spotly show pressure, is convenient to monitoring.

Air feed terminal band liquid phase low-temperature safety cut-off valve, various gas, liquid Safety relief valve are provided with a plurality of pressure, temperature parameter monitory point, and link the Security that has improved equipment integral with supervisory system.

Working principle of the present utility model is as follows:

As shown in Figure 1, gas cylinder 3 enters bottle group sledge 1, adds smelly sledge 2 to gasification pressure regulation metering then.Add in the smelly sledge in gasification pressure regulation metering, BOG gas carries out pressure regulation, metering after heating up by BOG heater 2.1.

After the liquid that comes out in the steel cylinder 3 measures air-heating type gasifier 2.9 gasifications that add in the smelly sledge 2 through the gasification pressure regulation; enter main voltage regulator 2.7 and carry out the gas pressure regulation; when the overpressure of downstream tube road, cut-off valve promptly ultrahigh pressure cuts off, and is not subjected to the harm of high pressure with the protection upstream device.If the gas temperature after heating is low excessively, then before pressure regulation, also to carry out double heating by 2.8 pairs of gases of electric heating type vaporizer.Gas stream after the pressure regulation measures through turbine flowmeter 2.6, and metering back gas enters pipe network behind odorization machine 2.5, be delivered to the user.

All functions chunk of the present utility model is integrated in (the on-the-spot connection) on the sledge seat, and floor space is little, the on-site installation work amount is few, has only the connection of importing and exporting pipeline connection and external electrical, operation, easy to maintenance, safe and reliable, and can carry out Remote, need not on-the-spot on duty.

Claims

1, a kind of bottle of group type skid-mounted LNG air feed terminal, comprise the bottle group that a plurality of low temperature steel cylinders (3) are formed, it is characterized in that: comprise that also bottle group sledge (1) and gasification pressure regulation metering add smelly sledge (2), low temperature steel cylinder (3) is connected with bottle group sledge (1) by pipeline, the output terminal of bottle group sledge (1) is connected with the input end that gasification pressure regulation metering adds smelly sledge (2), be furnished with safety valve (1.1) on the bottle group sledge (1), gasification pressure regulation metering adds smelly sledge (2) by BOG vaporizer (2.1), safety valve (2.2), safety is diffused pipeline (2.3), odorization machine (2.5), main voltage regulator (2.7), air-heating type gasifier (2.9), flowmeter (2.6) and electric heating type vaporizer (2.8) are integrated.

2, bottle group type skid-mounted LNG air feed terminal according to claim 1, it is characterized in that: described flowmeter (2.6) is a turbine flowmeter.

3, bottle group type skid-mounted LNG air feed terminal according to claim 1 and 2, it is characterized in that: gasification pressure regulation metering adds is equipped with Safety relief valve (2.4) on the smelly sledge (2).

4, bottle group type skid-mounted LNG air feed terminal according to claim 1 and 2, it is characterized in that: gasification pressure regulation metering adds on the smelly sledge (2) is equipped with thermometer, temperature transducer and pressure transmitter.