CN217978347U

CN217978347U - LNG liquid adding machine

Info

Publication number: CN217978347U
Application number: CN202222324303.1U
Authority: CN
Inventors: 郭秀平; 王瑞冰; 李宝成
Original assignee: ENRIC(LANGFANG) ENERGY EQUIPMENT INTEGRATION CO LTD
Current assignee: ENRIC(LANGFANG) ENERGY EQUIPMENT INTEGRATION CO LTD
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-06
Anticipated expiration: 2032-08-31

Abstract

The application belongs to the technical field of the LNG filling, concretely relates to LNG liquid feeding machine, include: a vacuum box; the liquid feeding pipeline comprises a liquid inlet pipe, a liquid phase flowmeter, a vacuum pipe and a liquid feeding gun, wherein part of the liquid inlet pipe is arranged in the vacuum box, a liquid inlet and a liquid outlet of the liquid inlet pipe are respectively arranged at two ends of the liquid inlet pipe and are both arranged at the outer side of the vacuum box, and the liquid inlet is communicated with the LNG storage tank through a connecting pipeline; one end of the liquid phase flowmeter is communicated with the liquid outlet, and the other end of the liquid phase flowmeter is connected with the liquid adding gun through the vacuum tube. This scheme can directly be with the liquefied natural gas filling in the LNG storage tank to automobile-used gas cylinder through feed liquor pipe, liquid flowmeter, vacuum tube and liquid feeding rifle, and whole pipeline simple structure has reduced the liquid feeding resistance that liquefied natural gas received in the pipeline for liquefied natural gas's filling effect obtains showing and promotes.

Description

LNG liquid adding machine

Technical Field

The application belongs to the technical field of LNG filling, concretely relates to LNG liquid feeding machine.

Background

A Liquefied Natural Gas (LNG) filling machine (also known as an LNG liquid filling machine) is ultra-low temperature metering equipment for filling liquefied natural gas of an LNG filling station into an LNG automobile, and can be applied to various LNG filling stations. The equipment consists of three parts, namely a circuit system, a mass flowmeter and a gas circuit system. The LNG filling machine is suitable for various LNG filling stations in the current market, has the characteristics of high precooling speed, stable filling, accurate metering and the like, and has a huge promotion effect on the wide application of LNG.

However, the existing double-gun liquid adding machine is mostly of an integral vacuum box structure, the structure is complex, and the pipeline resistance is too large due to the complex pipeline, so that the filling effect of the liquefied natural gas is influenced.

SUMMERY OF THE UTILITY MODEL

An object of this application provides a LNG liquid feeding machine can simplify liquid feeding machine structure to reduce the pipeline resistance, promote LNG filling effect.

This application first aspect provides an LNG liquid feeding machine, includes:

a vacuum box;

the liquid feeding pipeline comprises a liquid inlet pipe, a liquid phase flowmeter, a vacuum pipe and a liquid feeding gun, wherein part of the liquid inlet pipe is arranged in the vacuum box, a liquid inlet and a liquid outlet of the liquid inlet pipe are respectively arranged at two ends of the liquid inlet pipe and are both arranged at the outer side of the vacuum box, and the liquid inlet is communicated with the LNG storage tank through a connecting pipeline; one end of the liquid phase flowmeter is communicated with the liquid outlet, and the other end of the liquid phase flowmeter is connected with the liquid adding gun through the vacuum tube.

In an exemplary embodiment of the present application, the liquid feeding line further comprises a first pneumatic emergency cut-off valve, which is in communication with the vacuum tube to open or close the vacuum tube.

In an exemplary embodiment of the present application, the vacuum tube is connected to the filling gun by a connecting hose.

In an exemplary embodiment of this application, LNG liquid feeding machine still includes the pneumatic quick emergency valve of second, the pneumatic quick emergency valve of second partly with be located in the vacuum box the feed liquor pipe intercommunication, another part of the pneumatic quick emergency valve of second is located the outside of vacuum box is right before carrying out the liquid feeding gaseous natural gas in the feed liquor pipe liquefies.

In an exemplary embodiment of this application, LNG liquid feeding machine still includes the return air pipeline, the return air pipeline include first muffler, second muffler, gas phase flowmeter and with the return air rifle of first muffler intercommunication, the gas phase flowmeter is located first muffler with between the second muffler, the part of second muffler is located in the vacuum chamber, the second muffler is kept away from the one end of gas phase flowmeter is equipped with the return air mouth, the return air mouth pass through the outlet duct with LNG storage tank intercommunication.

In an exemplary embodiment of the present application, a first check valve is provided on the first return pipe.

In an exemplary embodiment of the present application, the liquid inlet and the air return opening are both provided with one, and the liquid inlet and the air return opening are both provided at the bottom of the vacuum box.

In an exemplary embodiment of this application, LNG liquid feeding machine still includes and is used for placing the liquid feeding rifle seat, the liquid feeding rifle seat through the third muffler with in the vacuum chamber the second muffler intercommunication for with the natural gas of gasification in the liquid feeding rifle introduce in the LNG storage tank.

In an exemplary embodiment of the present application, a second check valve is provided on the third muffler.

In an exemplary embodiment of the present application, the first return air pipe is connected to the return air gun through a return air hose, and the connection hose and the return air hose are both metal hoses.

The scheme of the application has the following beneficial effects:

the LNG liquid adding machine comprises the vacuum box and the liquid inlet pipe, wherein the liquid inlet pipe is partially arranged inside the vacuum box, so that the pipeline structure inside the vacuum box is simpler, the production and assembly are simpler, and the production cost is reduced; the filled LNG is measured by the liquid phase flowmeter, so that the accuracy is high; in addition, can directly annotate the liquefied natural gas in the LNG storage tank to the gas cylinder for the car through feed liquor pipe, liquid flowmeter, vacuum tube and liquid feeding rifle, whole pipeline simple structure has reduced the liquid feeding resistance that liquefied natural gas received in the pipeline for liquefied natural gas's filling effect obtains showing and promotes.

Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 shows a schematic structural diagram of an LNG liquid filling machine provided in an embodiment of the present application;

fig. 2 shows a schematic front view of an LNG charger according to an embodiment of the present application;

fig. 3 shows a schematic top view structure diagram of an LNG charger provided in an embodiment of the present application.

Description of reference numerals:

101. a vacuum box; 102. a liquid feeding pipeline; 1021. a liquid inlet pipe; 1021a liquid inlet; 1021b, a liquid outlet; 1022. a liquid phase flow meter; 1023. a vacuum tube; 1024. a first pneumatic emergency shut-off valve; 103. a connecting hose; 104. a second pneumatic emergency cut-off valve; 105. a gas return line; 1051. a first return air pipe; 1052. a second muffler; 1052a, a return air port; 1053. a gas phase flow meter; 106. a first check valve; 107. a liquid adding gun seat; 108. a third air return pipe; 109. a second check valve; 110. an air return hose.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

In the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral parts thereof; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the embodiments of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an LNG charger according to the present invention; fig. 2 is a schematic front view of an LNG liquid adding machine according to the present application; fig. 3 is a schematic structural diagram of the LNG charger in a top view according to the embodiment of the present application.

Referring to fig. 1 to 3, the LNG charger of the present embodiment includes a vacuum tank 101 and a charging line 102; the charging line 102 includes a liquid inlet tube 1021, a liquid phase flow meter 1022, a vacuum tube 1023, and a charging gun (not shown).

Referring to fig. 2 or 3, a portion of the liquid inlet tube 1021 is disposed in the vacuum box 101 to accommodate the liquid inlet tube 1021 in the vacuum box 101, and a liquid inlet 1021a and a liquid outlet 1021b of the liquid inlet tube 1021 are respectively disposed at two ends of the liquid inlet tube 1021 and are both disposed outside the vacuum box 101 to facilitate introducing and outputting lng; the liquid inlet 1021a is communicated with an LNG storage tank (not shown in the figure) through a connecting pipeline so as to introduce liquefied natural gas in the LNG storage tank into the liquid inlet pipe 1021 for liquid adding; in addition, a liquid outlet 1021b at the other end of the liquid inlet pipe 1021 is communicated with a liquid phase flowmeter 1022 through structures such as a bolt and a flange, so that in the liquid adding process, the liquid phase flowmeter 1022 measures the liquefied natural gas flowing through the liquid inlet pipe 1021, and the measurement of the filled liquefied natural gas is more accurate.

Further, as shown in fig. 1 and 2, an end of the liquid phase flow meter 1022 remote from the liquid inlet pipe 1021 communicates with the vacuum pipe 1023, and an end of the vacuum pipe 1023 remote from the liquid phase flow meter 1022 is connected with the priming gun. Like this, through feed liquor pipe 1021, liquidoid flowmeter 1022, vacuum tube 1023 and liquid feeding rifle structure for liquid feeding pipeline 102 is simpler, has reduced the liquid feeding resistance that liquefied natural gas received in the pipeline, and then makes the filling effect better, improves the filling speed. In addition, the liquefied natural gas to be filled is metered by the liquid phase flowmeter 1022, so that the metering effect is more accurate.

It should be noted that, referring to fig. 1, the LNG refueling gun is used for double-gun refueling, that is, two symmetrically arranged refueling pipelines 102 are provided, and the two refueling pipelines 102 may operate independently or simultaneously.

In addition, vacuum box 101 covers part of feed liquor pipe 1021 for the inside pipeline structure of vacuum box 101 is simpler, and whole liquid feeding pipeline 102 is compacter, reduces whole LNG liquefied natural gas's production equipment time, has also reduced manufacturing cost.

It should be noted that, referring to fig. 2, the vacuum tube 1023 is a "Z" shaped and upwardly bent right-angle elbow, so as to prevent gaseous natural gas from entering the vacuum tube 1023, and ensure the filling effect.

Further, referring to fig. 1 or fig. 3, the liquid adding pipeline 102 further includes a first pneumatic emergency cut-off valve 1024, and the first pneumatic emergency cut-off valve 1024 is communicated with the vacuum tube 1023 to open or close the vacuum tube 1023 when liquid is added or not added, and can have a check function when the vacuum tube 1023 is opened or closed to prevent backflow of liquefied natural gas, and prevent the gasified natural gas from flowing into the vacuum tube 1023 to ensure the filling effect of the liquefied natural gas.

Furthermore, in order to increase the moving range of the liquid filling gun and reduce the difficulty of liquid filling of the liquid filling gun, the vacuum tube 1023 is connected with the liquid filling gun through the connecting hose 103.

It can be understood that the connection hose 103 can be made of a metal hose with a shrinking function so as to be convenient for storage and expansion, thereby improving the flexibility of liquid feeding of the liquid feeding gun.

In addition, referring to fig. 1 or 3, the LNG dispenser further includes a second pneumatic emergency cut-off valve 104, a portion of the second pneumatic emergency cut-off valve 104 is communicated with a liquid inlet pipe 1021 in the vacuum tank 101, and another portion is disposed outside the vacuum tank 101. Thus, the gasified natural gas in the liquid inlet pipe 1021 can be liquefied through the second pneumatic emergency cut-off valve 104, and the purity of the liquefied natural gas can be further improved, so that the filling effect is ensured; besides, the second starting emergency cut-off valve can be used for ensuring that the whole structure is safer and more compact.

Moreover, the second pneumatic quick action emergency valve 104 is designed according to the number of the liquid feeding pipelines 102, for example, the liquid feeding pipelines 102 have two, and the second pneumatic quick action emergency valve 104 is also provided with two valves including two valves, so as to liquefy the gasified natural gas in the two liquid feeding pipelines 102 respectively, and ensure the liquid feeding effect.

Referring to fig. 1 and 3, the LNG charger further includes a gas return line 105, and the gas return line 105 includes a first gas return pipe 1051, a second gas return pipe 1052, a gas phase flow meter 1053, and a gas return gun (not shown) communicating with the first gas return pipe 1051.

The gas phase flowmeter 1053 is communicated with the first return pipe 1051 and the second return pipe 1052 through structures such as flanges and bolts, and is used for metering the gas natural gas flowing through the first return pipe 1051 and the second return pipe 1052, so that the metering effect is more accurate; the part of second muffler 1052 is located in vacuum box 101 to accomodate second muffler 1052, and make the pipeline in vacuum box 101 simpler, simplified production and equipment, also reduced manufacturing cost.

In addition, referring to fig. 2, an end of the second gas return pipe 1052 remote from the gas phase flow meter 1053 is provided with a gas return port 1052a, the gas return port 1052a is located outside the vacuum box 101, and the gas return port 1052a is communicated with the LNG storage tank through a gas outlet pipe, so that the gaseous natural gas in the gas return gun is introduced into the LNG storage tank, and the gaseous natural gas is recovered. Like this, can retrieve the gaseous state natural gas in the automobile-used gas cylinder, avoid the wasting of resources.

It should be noted that the air return line 105 also adopts a double-gun structure, that is, the LNG liquid feeder adopts the double air return line 105; the two return air lines 105 may be operated separately or simultaneously.

In addition, for the sake of compact and neat arrangement of the whole, the two liquid feeding pipes 102 and the two gas return pipes 105 are symmetrically arranged with each other, and the liquid feeding pipes 102 are arranged outside the gas return pipes 105.

It should be noted that, referring to fig. 1, the first gas return pipe 1051 is provided with a first check valve 106 to prevent backflow of the gaseous natural gas, so as to ensure safety of the pipeline.

Furthermore, referring to fig. 2, in order to facilitate the installation of the LNG liquid feeder and bring greater convenience to the construction of the station, the liquid inlet 1021a and the air return opening 1052a are both provided as one, so that the parts are convenient and time-saving to manufacture, and the production cost is reduced; the liquid inlet 1021a and the air return opening 1052a are located at the bottom of the vacuum box 101, so as to facilitate liquid feeding and air return, facilitate pipeline installation in the vacuum box 101, and open holes at the outer side of the vacuum box 101.

In addition, as shown in fig. 1 or fig. 3, the LNG refueling machine further includes a refueling gun seat 107 for placing a refueling gun, and after refueling of the refueling gun is completed, the refueling gun is placed on the refueling gun seat 107; and this liquid feeding gun platform 107 communicates through second muffler 1052 in third muffler 108 and the vacuum box 101 to in introducing the LNG storage tank with the natural gas of gasification in the liquid feeding rifle, store the natural gas, avoid the natural gas to reveal, guarantee the security effect.

Further, referring to fig. 1, the third gas return pipe 108 is also provided with a second check valve 109 to prevent backflow of the gaseous natural gas and ensure safety.

It should be noted that the liquid filling gun seat 107 is located above the liquid filling pipe 102 and the gas return pipe 105, so as to ensure that the gaseous natural gas enters the third gas return pipe 108.

Exemplarily, as shown in fig. 1 or fig. 3, the third gas return pipe 108 includes two branch pipes symmetrically disposed with respect to each other and a merging pipe communicated with the two branch pipes, and the ends of the two branch pipes are both provided with filling gun seats 107 and respectively correspond to the two filling guns, so as to recycle the gas natural gas in the filling guns into the branch pipes; the other end of the merging pipe is communicated with a second gas return pipe 1052 in the vacuum box 101, so that the gaseous natural gas in the branch pipe is introduced into the second gas return pipe 1052, and then introduced into the LNG storage tank through a gas return port 1052a, so as to be stored. The merging pipe is also a bent right-angle elbow pipe, one end of which is communicated with the branch pipe, and the other end of which vertically extends into the vacuum box 101 and is communicated with the second air return pipe 1052.

It will be appreciated that, in order to avoid backflow of the gaseous natural gas, the second check valve 109 is provided in the branch pipe, as shown in fig. 1 or 3.

In addition, the first air return pipe 1051 is connected to the air return gun through the air return hose 110, so as to increase the moving range of the air return gun and reduce the difficulty of using the air return gun.

It should be noted that the connection hose 103 and the air return hose 110 are both made of metal hoses, so that the connection strength and the use convenience can be ensured.

In the description herein, references to the description of the terms "some embodiments," "exemplary," etc. mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or exemplary is included in at least one embodiment or exemplary of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and should not be construed as limiting the present application and that various changes, modifications, substitutions and alterations can be made therein by those skilled in the art within the scope of the present application, and therefore all changes and modifications that come within the meaning of the claims and the description of the invention are to be embraced therein.

Claims

1. The utility model provides a LNG liquid feeding machine which characterized in that includes:

a vacuum box;

2. The LNG charger of claim 1, characterized in that the charging line further comprises a first pneumatic emergency shut-off valve in communication with the vacuum tube to open or close the vacuum tube.

3. The LNG charger of claim 1, characterized in that the vacuum tube is connected to the charging gun by a connecting hose.

4. The LNG filling machine of claim 3, further comprising a second pneumatic emergency shut-off valve, a portion of the second pneumatic emergency shut-off valve being in communication with the liquid inlet pipe located in the vacuum box, another portion of the second pneumatic emergency shut-off valve being located outside the vacuum box to liquefy the gaseous natural gas in the liquid inlet pipe prior to filling.

5. The LNG liquid adding machine according to claim 3 or 4, further comprising a gas return pipeline, wherein the gas return pipeline comprises a first gas return pipe, a second gas return pipe, a gas phase flow meter and a gas return gun communicated with the first gas return pipe, the gas phase flow meter is arranged between the first gas return pipe and the second gas return pipe, a part of the second gas return pipe is arranged in the vacuum box, a gas return port is arranged at one end, far away from the gas phase flow meter, of the second gas return pipe, and the gas return port is communicated with the LNG storage tank through a gas outlet pipe.

6. The LNG filler of claim 5, wherein the first gas return line is provided with a first check valve.

7. The LNG liquid adding machine according to claim 5, wherein one liquid inlet is provided with one air return port, and the other air return port is provided at the bottom of the vacuum box.

8. The LNG liquid adding machine according to claim 5, further comprising a liquid adding gun base for placing the liquid adding gun, wherein the liquid adding gun base is communicated with the second air return pipe in the vacuum tank through a third air return pipe so as to introduce natural gas gasified in the liquid adding gun into the LNG storage tank.

9. The LNG filling machine of claim 8, wherein the third gas return pipe is provided with a second check valve.

10. The LNG liquid feeder of claim 9, wherein the first gas return pipe is connected to the gas return gun through a gas return hose, and the connecting hose and the gas return hose are both metal hoses.