CN203549375U - Pump skid body and liquefied natural gas secondary gas filling station with pump skid body - Google Patents

Pump skid body and liquefied natural gas secondary gas filling station with pump skid body Download PDF

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Publication number
CN203549375U
CN203549375U CN201320723516.XU CN201320723516U CN203549375U CN 203549375 U CN203549375 U CN 203549375U CN 201320723516 U CN201320723516 U CN 201320723516U CN 203549375 U CN203549375 U CN 203549375U
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CN
China
Prior art keywords
pump skid
skid body
vacuum chamber
liquefied natural
interface
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Expired - Lifetime
Application number
CN201320723516.XU
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Chinese (zh)
Inventor
梁兰芳
刘玉红
高学芳
吴平
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.)
China International Marine Containers Group Co Ltd
CIMC Enric Investment Holdings Shenzhen Co Ltd
Shijiazhuang Enric Gas Equipment Co Ltd
Original Assignee
China International Marine Containers Group Co Ltd
CIMC Enric Investment Holdings Shenzhen Co Ltd
Shijiazhuang Enric Gas Equipment Co Ltd
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Application filed by China International Marine Containers Group Co Ltd, CIMC Enric Investment Holdings Shenzhen Co Ltd, Shijiazhuang Enric Gas Equipment Co Ltd filed Critical China International Marine Containers Group Co Ltd
Priority to CN201320723516.XU priority Critical patent/CN203549375U/en
Application granted granted Critical
Publication of CN203549375U publication Critical patent/CN203549375U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model provides a pump skid body and a liquefied natural gas secondary gas filling station with the pump skid body. The pump skid body comprises a vacuum box body, a plurality of interfaces, internal pipelines and a plurality of valves, wherein the inside of the vacuum box body has a predetermined vacuum degree; the interfaces are arranged on the vacuum box body and are used for connecting devices outside the pump skid body; the internal pipelines are arranged in the vacuum box body and are connected with the interfaces; the valves are connected to the internal pipelines. The pipelines of the pump skid body provided by the utility model are sealed by the vacuum box body, so that the pipelines are prevented from exposing outside, and the service life of the pipelines is prolonged. Moreover, a vacuum environment is formed between each pipeline and the vacuum box body, so that the heat transfer efficiency from the outside to the liquefied natural gas is reduced, and a good cold insulation effect can be achieved.

Description

Pump skid body and the LNG Liquefied natural gas secondary gas station with this pump skid body
Technical field
The utility model relates to clean energy resource field, relates in particular to a kind of pump skid body and the LNG Liquefied natural gas secondary gas station with this pump skid body.
Background technique
LNG Liquefied natural gas (LNG) is one of universally acknowledged clean energy resource, compared with diesel oil, has two large advantages.The one, environment-friendly advantage, is used LNG as motor fuel, and in tail gas, the content of harmful matter, than using its nitrogen dioxide of oil fuel, carbon dioxide content to reduce respectively 98% and 30%, is more conducive to environmental protection; The 2nd, economic advantages, the motor of equal-wattage, the diesel oil based in the market and LNG calculation of price, use LNG fuel ratio use diesel oil can fuel saving expense approximately 30%.Therefore by LNG as an alternative fuel applications at traffic and transport fields such as automobile, boats and ships, country is realized to energy-saving and emission-reduction strategic objective significant.
Along with developing rapidly of LNG industry, the construction of LNG gas station presents explosive growth, and the pattern of gas station is also varied.LNG belongs to low-temperature deep liquid, and the insulation to storage tank in gas station, the insulation of pipeline are just particularly important.And heat insulation effect has vital impact to the operation profit of gas station.The heat preserving mode of pipeline in gas station, traditional has foam-in-place cold insulation pipeline form and the poly-fulminuric acid fat of PIR() form that combines with vacuum pipeline of cold insulation material.
Cryopump is to connect the maximum part of valve, conventionally makes pump skid body-modular unit.For foam-in-place cold insulation pipeline, because sealing effect is poor, with regard to easily damaging, affect year in and year out cold insulation effect.In addition, foam-in-place cold insulation pipeline needs very large space.And for vacuum pipeline, although cold insulation effect is relatively better, for the pump skid body of secondary station, as shown in Figure 1, show the pump skid body of existing double pump vacuum tube line style.Which floor the vacuum pipeline 120 being connected with cryopump 110 need to arrange, and valve quantity is more, therefore installs, it is all very inconvenient to operate.In addition, vacuum pipeline 120 is exposed to outside, therefore also has the poor problem of sealing effect.
Therefore, the LNG Liquefied natural gas secondary gas station that is necessary to propose a kind of pump skid body He has this pump skid body, to solve problems of the prior art.
Model utility content
In order to address the above problem, according to one side of the present utility model, provide a kind of pump skid body for LNG Liquefied natural gas secondary gas station, described pump skid body comprises: vacuum chamber, has predetermined degree of vacuum in described vacuum chamber; Multiple interfaces, it is arranged on described vacuum chamber, for being connected with the device outside described pump skid body; Internal pipeline, it is arranged in described vacuum chamber, and connects described multiple interface; And multiple valves, it is connected to described internal pipeline.
Preferably, each valve body and the functional unit of including in described multiple valves, described valve body is arranged in described vacuum chamber, and described functional unit is arranged on the wall of described vacuum chamber, and can operate from the outside of described vacuum chamber.
Preferably, the outer surface that is positioned at the parts of described vacuum chamber is provided with thermal insulation layer.
Preferably, described multiple interface comprise storage tank interface for connecting storage tank, for exporting the output interface of LNG Liquefied natural gas, for receiving the input interface of rock gas and cryopump interface for being connected cryopump.
Preferably, described vacuum chamber comprises the side being oppositely arranged and the end face being oppositely arranged, described cryopump interface is arranged on in described side, described storage tank interface be arranged in described end face one upper, and described input interface and described output interface are arranged on another in described end face.
Preferably, described multiple interfaces also comprise the vaporizer interface for connecting empty temperature vaporizer, and described vaporizer interface is arranged on another in described side.
Preferably, described predetermined degree of vacuum is higher than 10 -3pa.
The utility model also provides a kind of LNG Liquefied natural gas secondary gas station, and described LNG Liquefied natural gas secondary gas station comprises: any pump skid body as above; Storage tank, it is connected to described pump skid body by one or more in described multiple interfaces; And cryopump, it is connected to described pump skid body by one or more in described multiple interfaces.
Preferably, being positioned at outside described vacuum chamber is vacuum pipeline for connecting the exterior tubing of described internal pipeline and described cryopump.
Preferably, described LNG Liquefied natural gas secondary gas station also comprises by one or more sky temperature vaporizer and/or the liquid fillers that are connected to described pump skid body in described multiple interfaces.
The pipeline of the pump skid body that the utility model provides is sealed by vacuum chamber, avoids outside pipeline is exposed to the working life of having improved pipeline.And, between pipeline and vacuum chamber, be set to vacuum environment, reduced the extraneous heat transference efficiency to LNG Liquefied natural gas, can there is good cold insulation effect.
In model utility content, introduced the concept of a series of reduced forms, this will further describe in embodiment part.The utility model content part does not also mean that key feature and the essential features that will attempt to limit technological scheme required for protection, does not more mean that the protection domain of attempting to determine technological scheme required for protection.
Below in conjunction with accompanying drawing, describe advantage of the present utility model and feature in detail.
Accompanying drawing explanation
Following accompanying drawing of the present utility model is used for understanding the utility model in this as a part of the present utility model.Shown in the drawings of mode of execution of the present utility model and description thereof, be used for explaining principle of the present utility model.In the accompanying drawings,
The plan view of the pump skid body of the existing double pump vacuum tube of Fig. 1 line style;
Fig. 2 is according to the plan view of the pump skid body with cryopump of a preferred embodiment of the utility model; And
Fig. 3 is according to the schematic block diagram of the LNG secondary gas station of a preferred embodiment of the utility model.
Embodiment
In the following description, having provided a large amount of concrete details understands the utility model more thoroughly to provide.But, it will be apparent to one skilled in the art that the utility model can be implemented without one or more these details.In other example, for fear of obscuring with the utility model, for technical characteristicss more well known in the art, be not described.
In order thoroughly to understand the utility model, will detailed structure be proposed in following description.Obviously, embodiment of the present utility model is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present utility model is described in detail as follows, but except these are described in detail, the utility model can also have other mode of executions.
According to an aspect of the present utility model, provide a kind of pump skid body.This pump skid body is mainly used in LNG secondary gas station.Fig. 2 shows the plan view of the pump skid body that is connected with cryopump, below in conjunction with Fig. 2, describes the utility model in detail.As shown in Figure 2, pump skid body comprises vacuum chamber 210, multiple interface 220, internal pipeline and multiple valve 230.
Vacuum chamber 210 is airtight casing.The shape of vacuum chamber 210 is not limited to the shape shown in figure.In one embodiment, vacuum chamber 210 can be the shape of square body roughly.In other embodiments, vacuum chamber 210 can also be cylindrical etc.Further, this vacuum chamber 210 is interior can remain on predetermined degree of vacuum, to reduce the thermal radiation of the LNG Liquefied natural gas in internal pipeline and internal pipeline, and then to LNG Liquefied natural gas cold insulation effectively.Preferably, this predetermined degree of vacuum can be higher than 10 -3pa, to reduce the gas heat-transfer efficiency of the extraneous LNG Liquefied natural gas to low temperature.Be appreciated that the degree of vacuum in vacuum chamber 210 is higher, heat transference efficiency is lower.But in practice, also need the fabricating cost of the parts (such as internal pipeline etc.) of considering vacuum chamber 210 and inside thereof, therefore those skilled in the art can reasonably arrange the degree of vacuum in vacuum chamber 210 in above-mentioned scope.
Multiple interfaces 220 are arranged on vacuum chamber 210, for being connected with the device outside this pump skid body.Device outside pump skid body for example comprises cryopump 300, unloads, one or more in liquid filler and empty temperature vaporizer.The type of interface 220 is for example flange-interface and/or pipe welding port etc.As example, multiple interfaces 220 comprise storage tank interface for connecting storage tank, for exporting the output interface of LNG Liquefied natural gas, for receiving the input interface of LNG Liquefied natural gas and cryopump interface for being connected cryopump.The function that describes multiple interfaces 220 in detail of the LNG secondary gas station hereinafter providing in connection with the utility model.
Internal pipeline is arranged in vacuum chamber 210, thereby not shown in Fig. 2.Internal pipeline is used for connecting multiple interfaces 220, and arranges according to corresponding function, the corresponding function of external means being connected to realize multiple interfaces 220.
Multiple valves 230 are connected to internal pipeline, for control internal pipeline LNG Liquefied natural gas flow.Valve 230 can, according to the function setting of expecting to realize, therefore be not limited to the set-up mode shown in Fig. 2.In a preferred embodiment, each valve 230 includes valve body and functional unit.In order to improve cold insulation effect, valve body is all arranged in vacuum chamber 210, and functional unit is arranged on the wall of vacuum chamber 210, and functional unit can operate from the outside of vacuum chamber 210.Like this, can to valve 230, operate from the outside of vacuum chamber 210, and facilitate maintenance of valve.Fig. 2 only shows this preferred implementation, only shows the functional unit of valve 230 from the outside of vacuum chamber 230.
The pipeline of the pump skid body that the utility model provides is sealed by vacuum chamber 210, avoids outside pipeline is exposed to the working life of having improved pipeline.And, between pipeline and vacuum chamber, be set to vacuum environment, reduced the extraneous heat transference efficiency to LNG Liquefied natural gas, can there is good cold insulation effect.
In a preferred embodiment, the outer surface that is positioned at the parts of vacuum chamber 210 is provided with thermal insulation layer.At the valve body of valve 230, be arranged in the embodiment of vacuum chamber 210, on internal pipeline and valve body, thermal insulation layer can be set.The material of thermal insulation layer can be the composite bed of laminated aluminium foil and paper.Thermal insulation layer is wrapped on internal pipeline and valve body.In other embodiments, thermal insulation layer also can adopt other material, as long as can realize its function.
Referring to Fig. 3, show the LNG secondary gas station according to a preferred embodiment of the utility model.
Cryopump 300 is connected to pump skid body 200 by cryopump interface.Cryopump interface comprises cryopump liquid entering hole and cryopump liquid return hole.Cryopump 300 provides power for the conveying between the device outside conveying and the pump sledge 200 of LNG Liquefied natural gas in pump sledge 200.For LNG secondary gas station, can use two cryopumps 300, but the utility model is not got rid of the situation of using more cryopumps 300.Preferably, referring to Fig. 2, the exterior tubing for connecting internal pipeline and cryopump 300 being positioned at outside vacuum chamber 210 can be for vacuum pipeline.Vacuum pipeline can be existing any vacuum pipeline.Can be for example the vacuum pipeline of two-layer pipe, between bimetallic tube, be provided with and in the space between thermal insulating material and bimetallic tube, there is certain degree of vacuum.
As example, pump skid body 200 can be from the 400 reception LNG Liquefied natural gas of unloading.Unload and 400 by input interface, be connected to pump skid body 200.Unload and 400 be used for to pump skid body 200, providing LNG Liquefied natural gas by input interface.Certainly, in unshowned other embodiment, pump skid body 200 can also receive LNG Liquefied natural gas from other gas source.
Storage tank 500 is connected to pump skid body 200 by storage tank interface.Storage tank interface can comprise storage tank liquid entering hole, storage tank liquid outlet and storage tank gas phase mouth.LNG Liquefied natural gas via internal pipeline, be transported to storage tank 500 via storage tank liquid entering hole again, and is stored in storage tank 500 under the pumping pressure of cryopump 300.When needed, the LNG Liquefied natural gas being stored in storage tank 500 provides to output interface via storage tank liquid outlet, pump skid body 200 under the pumping of cryopump 300.According to single tank volume≤60m of < < LNG Liquefied natural gas (LNG) Vehicle Fueling Station technical specification > > LNG storage tank 3, and the total measurement (volume) V of LNG storage tank, 60m 3< V≤120m 3.Therefore, in one embodiment, can provide two storage tanks, the volume of each storage tank is 60m 3.
Output interface place is connected with for example output unit of liquid filler 600.In addition,, in unshowned other embodiment, output interface can also directly be connected with the vehicle or other device that need liquid feeding, to provide LNG Liquefied natural gas to them.In the preferred embodiment shown in Fig. 3, liquid filler 600 is connected to liquid filler by output interface.In the preferred embodiment, output interface can comprise output liquid entering hole and output liquid return hole.Output liquid entering hole is for exporting to LNG Liquefied natural gas to need the vehicle of liquid feeding or other device.Output liquid return hole is used for making unnecessary LNG Liquefied natural gas return to pump skid body 200, and is finally sent back to storage tank 500.
Return referring to Fig. 2, in the preferred embodiment, vacuum chamber 210 comprises the side 211 that is oppositely arranged and 212 and the end face 213 and 214 that is oppositely arranged.Cryopump interface is arranged on in side, for example, on side 211.When cryopump 230 is installed, cryopump 230 can be arranged on to a side at these 211 places, side, as shown in Figure 2.Storage tank interface is arranged on in end face, for example, on end wall 213.When being installed, storage tank storage tank can be arranged on to the one end at these end wall 213 places.Input interface and output interface are arranged on another in end face, for example end face 214.
In further preferred embodiment, multiple interfaces also comprise the vaporizer interface for connecting empty temperature vaporizer, and vaporizer interface can be arranged on another in side, for example, on side 212.Participate in Fig. 3, empty temperature vaporizer 700 can be connected to pump skid body 200 by vaporizer interface, and empty temperature vaporizer 700 is mainly used in increasing the air pressure that source is provided of LNG Liquefied natural gas, for example, increase the air pressure of unloading in 400, to improve the speed of unloading.
According to another aspect of the present utility model, also provide a kind of LNG secondary gas station.Should be referring to Fig. 3, LNG secondary gas station comprises any pump skid body as above, storage tank and cryopump.The all parts comprising about pump skid body can, referring to the description of appropriate section above, for simplicity, no longer describe in detail herein.Storage tank 500 for example, is connected to pump skid body by one or more (storage tank interfaces) in multiple interfaces 220.Cryopump 300 for example, is connected to pump skid body 200 by one or more (cryopump interfaces) in multiple interfaces.In addition, LNG secondary gas station can also comprise empty temperature vaporizer 700 and/or liquid filler 600, and they can for example, be connected to pump skid body 200 by one or more (vaporizer interface and/or output interfaces) in multiple interfaces respectively.
The pipeline of the pump skid body that the utility model provides is sealed by vacuum chamber, avoids outside pipeline is exposed to the working life of having improved pipeline.And, between pipeline and vacuum chamber, be set to vacuum environment, reduced the extraneous heat transference efficiency to LNG Liquefied natural gas, can there is good cold insulation effect.
The utility model is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to the utility model to be limited in described scope of embodiments.In addition it will be understood by those skilled in the art that; the utility model is not limited to above-described embodiment; according to instruction of the present utility model, can also make more kinds of variants and modifications, these variants and modifications all drop in the utility model scope required for protection.Protection domain of the present utility model is defined by the appended claims and equivalent scope thereof.

Claims (10)

1. for a pump skid body for LNG Liquefied natural gas secondary gas station, it is characterized in that, described pump skid body comprises:
Vacuum chamber, has predetermined degree of vacuum in described vacuum chamber;
Multiple interfaces, it is arranged on described vacuum chamber, for being connected with the device outside described pump skid body;
Internal pipeline, it is arranged in described vacuum chamber, and connects described multiple interface; And
Multiple valves, it is connected to described internal pipeline.
2. pump skid body as claimed in claim 1, it is characterized in that, each valve body and the functional unit of including in described multiple valves, described valve body is arranged in described vacuum chamber, described functional unit is arranged on the wall of described vacuum chamber, and can operate from the outside of described vacuum chamber.
3. pump skid body as claimed in claim 1, is characterized in that, the outer surface that is positioned at the parts of described vacuum chamber is provided with thermal insulation layer.
4. pump skid body as claimed in claim 1, it is characterized in that, described multiple interfaces comprise storage tank interface for connecting storage tank, for exporting the output interface of LNG Liquefied natural gas, for receiving the input interface of rock gas and cryopump interface for being connected cryopump.
5. pump skid body as claimed in claim 4, it is characterized in that, described vacuum chamber comprises the side being oppositely arranged and the end face being oppositely arranged, described cryopump interface is arranged on in described side, described storage tank interface be arranged in described end face one upper, and described input interface and described output interface are arranged on another in described end face.
6. pump skid body as claimed in claim 5, is characterized in that, described multiple interfaces also comprise the vaporizer interface for connecting empty temperature vaporizer, and described vaporizer interface is arranged on another in described side.
7. pump skid body as claimed in claim 1, is characterized in that, described predetermined degree of vacuum is higher than 10 -3pa.
8. a LNG Liquefied natural gas secondary gas station, is characterized in that, described LNG Liquefied natural gas secondary gas station comprises:
Pump skid body as described in any one in claim 1-7;
Storage tank, it is connected to described pump skid body by one or more in described multiple interfaces; And
Cryopump, it is connected to described pump skid body by one or more in described multiple interfaces.
9. LNG Liquefied natural gas secondary as claimed in claim 8 gas station, is characterized in that, being positioned at outside described vacuum chamber is vacuum pipeline for connecting the exterior tubing of described internal pipeline and described cryopump.
10. LNG Liquefied natural gas secondary as claimed in claim 8 gas station, is characterized in that, described LNG Liquefied natural gas secondary gas station also comprises by one or more sky temperature vaporizer and/or the liquid fillers that are connected to described pump skid body in described multiple interfaces.
CN201320723516.XU 2013-11-13 2013-11-13 Pump skid body and liquefied natural gas secondary gas filling station with pump skid body Expired - Lifetime CN203549375U (en)

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Application Number Priority Date Filing Date Title
CN201320723516.XU CN203549375U (en) 2013-11-13 2013-11-13 Pump skid body and liquefied natural gas secondary gas filling station with pump skid body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320723516.XU CN203549375U (en) 2013-11-13 2013-11-13 Pump skid body and liquefied natural gas secondary gas filling station with pump skid body

Publications (1)

Publication Number Publication Date
CN203549375U true CN203549375U (en) 2014-04-16

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Granted publication date: 20140416