CN211475514U - Low temperature vacuum box mounting structure - Google Patents
Low temperature vacuum box mounting structure Download PDFInfo
- Publication number
- CN211475514U CN211475514U CN201922427313.6U CN201922427313U CN211475514U CN 211475514 U CN211475514 U CN 211475514U CN 201922427313 U CN201922427313 U CN 201922427313U CN 211475514 U CN211475514 U CN 211475514U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- vacuum box
- liquid
- return
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 claims abstract description 205
- 238000009434 installation Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 30
- 238000004321 preservation Methods 0.000 description 24
- 239000003949 liquefied natural gas Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 21
- 230000008569 process Effects 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a low-temperature vacuum box body mounting structure, relating to the technical field of LNG gas station equipment; the device comprises a pipeline assembly and a vacuum box body for accommodating the pipeline assembly, wherein the pipeline assembly comprises a gas return pipeline, a liquid filling pipeline, a first circulating pipeline and a second circulating pipeline, one end of the liquid filling pipeline, which is close to a filling gun port of the liquid filling pipeline, is provided with an emergency cut-off valve A and a check valve A, and the emergency cut-off valve A and the check valve A are arranged on the liquid filling pipeline positioned on the inner side of the vacuum box body; the first circulation pipeline comprises a vacuum pipe communicated with the liquid feeding pipeline, an emergency cut-off valve B is arranged on the vacuum pipe in a matching mode, and the vacuum pipe and the emergency cut-off valve B are located on the outer side of the vacuum box body; through implementing this technical scheme, can effectively solve current vacuum box layout mode and lead to the narrow and small technical problem in liquid feeding machine maintenance space to the realization adopts more reasonable vacuum box layout mode, gives liquid feeding machine installation and maintenance release more spaces, has brought bigger convenience for the installation and the maintenance of liquid feeding machine.
Description
Technical Field
The utility model relates to a LNG gas station equipment technical field especially relates to a low temperature vacuum box mounting structure.
Background
Natural gas is becoming more popular as a clean energy source, LNG is being the preferred fuel in many countries, the proportion of natural gas in energy supply is rapidly increasing, and liquefied natural gas is growing at a high rate of about 12% per year, becoming one of the most rapidly growing energy industries around the world. LNG (liquefied natural gas) is an ultra-low temperature clean and efficient energy source, the temperature of the LNG is usually-163 ℃, a liquid adding machine which runs on an LNG gas station is used, the internal pipeline of the LNG gas station is updated from the initial bare pipe heat preservation to the rectangular vacuum box structure heat preservation, and from the rectangular vacuum box heat preservation to the circular vacuum box heat preservation, the internal pipeline structure forms are continuously updated, the LNG gas station is aimed at enabling the LNG conveying pipeline to have better heat preservation treatment, meanwhile enabling the internal pipeline of the liquid adding machine to be neatly arranged, and avoiding large-area pipeline frosting or dripping phenomena.
However, in the process of implementing the embodiment of the present invention, the inventor of the present application finds that the existing pipeline heat preservation treatment at least has the following technical problems: on one hand, if the internal pipeline of the liquid adding machine is in a bare pipe heat preservation mode, the size of the liquid adding machine cannot be designed to be large due to the limitation of the overall size of the liquid adding machine, so that the internal pipeline distribution is compact, the pipeline is messy and difficult to distinguish, the welding and flaw detection operation is difficult, and great trouble is brought to later-period maintenance personnel; the insufficient space between the heat preservation pipelines directly causes the poor heat preservation performance of the whole pipeline, the phenomenon of large-area pipeline frosting can occur quickly after the liquid adding machine operates for a period of time, and if the liquid adding is stopped, the pipeline is frosted into water and drops into the ground or a pipe ditch in the process of returning the temperature, so that the serious water dropping phenomenon is caused; on the other hand if adopt the vacuum box heat preservation of rectangle structure or the vacuum box heat preservation of circular structure, even if can solve the technical problem that the pipeline is in disorder and the pipeline frosts, still there is the same technical problem with bare pipe heat preservation, the vacuum box occupies more than half space of liquid feeding machine internal pipeline, after having installed flowmeter and relevant valve annex, there is almost no equipment maintenance space, when the trouble appears in liquid feeding machine pipeline, valve or vacuum box etc. and need overhaul, still can't solve the difficult problem of later maintenance.
In view of the above technical problems, it is urgently needed to design a more reasonable layout of a vacuum box for solving the technical problem of narrow maintenance space of a liquid filling machine found in the application process of the existing vacuum box.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that the maintenance space of the liquid adding machine is narrow due to the arrangement mode of the existing vacuum box body, the utility model aims to provide a low-temperature vacuum box body installation structure, and the first purpose is to adopt a more reasonable arrangement mode of the vacuum box body, so that more space is released for the installation and maintenance of the liquid adding machine, and further the technical problem that the installation and maintenance space of the liquid adding machine is narrow is solved, and the whole pipeline assembly basically has no frosting phenomenon, so that a better heat preservation treatment effect can be achieved, and the arrangement of the pipeline inside the liquid adding machine is cleaner and tidier; the second purpose is to reduce the design size of the vacuum box body, and further reduce the manufacturing cost of the vacuum box body; the size design of the vacuum box body is reduced, meanwhile, the vacuumizing time is shortened, greater convenience is brought to the installation and maintenance of the liquid adding machine, and the vacuum box body has better practicability in practice.
The utility model adopts the technical scheme as follows:
low temperature vacuum box mounting structure locates inside LNG liquid feeding machine, includes
The pipeline assembly comprises a gas return pipeline, a liquid adding pipeline and a first circulating pipeline;
a vacuum box for accommodating the pipeline assembly; one end of the liquid feeding pipeline, which is close to a filling gun port of the liquid feeding pipeline, is provided with an emergency cut-off valve A and a check valve A, and the emergency cut-off valve A and the check valve A are arranged on the liquid feeding pipeline positioned on the inner side of the vacuum box body; the first circulation pipeline comprises a vacuum pipe communicated with the liquid feeding pipeline, an emergency cut-off valve B is arranged on the vacuum pipe in a matched mode, and the vacuum pipe and the emergency cut-off valve B are located on the outer side of the vacuum box body.
In the technical scheme, the vacuum tube with the emergency cut-off valve B in the first circulating pipeline is arranged on the outer side of the heat insulation box body, so that the design size of the vacuum box body is reduced to the maximum extent, more space is released for installation and maintenance by the structural design, and the technical problem that the installation and maintenance space of the liquid adding machine is narrow can be effectively solved; simultaneously because the design of vacuum tube in the first circulating line, when having reduced vacuum box appearance design size, also can effectively avoid the phenomenon that the pipeline subassembly appears frosting, can reach better heat preservation treatment effect, and the inside pipeline of liquid feeding machine arranges more neatly, has brought very big convenience for later maintenance.
Further, along gaseous return-air direction, air return gun mouth, check valve B, return-air flowmeter and return-air port have set gradually on the return-air pipeline, check valve B and return-air flowmeter all are located the return-air pipeline in the vacuum box outside to make the return-air in-process, the gas that gets into the return-air gun mouth through the return-air gun gets into the return-air pipeline that is located the vacuum box inboard and flows out by the return-air port through check valve B and return-air flowmeter in proper order.
Furthermore, the air return port is arranged below the vacuum box body and is arranged at the end part of the air return pipeline extending out of the bottom of the vacuum box body.
Further, along the liquid filling direction, still be provided with inlet, filter, liquid feeding flowmeter and filling gun mouth on the liquid feeding pipeline, filter and liquid feeding flowmeter are located the liquid feeding pipeline in the vacuum box outside on the way to make the liquid filling in-process in proper order through inlet, filter and liquid feeding flowmeter get into the liquid feeding pipeline that is located the vacuum box inboard and flow out by the filling gun mouth.
Furthermore, the filling gun port is arranged above the vacuum box body and is arranged at the end part of a liquid filling pipeline extending out of the top of the vacuum box body.
Furthermore, one end of the vacuum tube is communicated with a liquid adding pipeline close to the outer side of the vacuum box body, and the other end of the vacuum tube is communicated with an air return pipeline positioned on the inner side of the vacuum box body and used for precooling the liquid adding pipeline.
Further, one end, close to the air return pipeline, of a first circulation pipeline located on the inner side of the vacuum box body is provided with a branch pipe, the branch pipe is located in the downstream direction of the emergency cut-off valve B in the first circulation pipeline, and the branch pipe is provided with a pressure transmitter. Therefore, when the pressure transmitter detects that pressure changes and fluctuation exist in the pipeline, the flowing condition of the pipeline liquid can be judged, and the condition that the metering of a client is inaccurate finally caused by manually adjusting the opening of the emergency cut-off valve B or the untight closing of the emergency cut-off valve B is avoided.
Further, the pipeline subassembly still includes the second circulation pipeline, the second circulation pipeline includes the liquid feeding hose that communicates with the filling gun mouth, the liquid return pipeline and locates the gun socket mouth of liquid return pipeline tip, liquid return pipeline and the air return pipeline that is located the vacuum box body communicate to make the liquid feeding rifle at liquid feeding hose tip insert in the gun socket mouth, liquid gets into the liquid feeding hose with filling gun mouth intercommunication through the liquid feeding pipeline, again through the liquid feeding hose get into the liquid return pipeline and flow by the return air port of air return pipeline.
Furthermore, the gun inserting seat opening is positioned above the vacuum box body, the liquid return pipeline extends into the vacuum box body from top to bottom and is communicated with the gas return pipeline, and a check valve C is arranged on the liquid return pipeline positioned on the inner side of the vacuum box body.
Furthermore, the volume ratio of the vacuum box body to the inner space of the liquid filling machine is less than or equal to 1/4. Therefore, the technical scheme strictly controls the appearance design size of the vacuum box body, and the vacuum box body is designed to occupy 1/4 of the inner space of the liquid adding machine to the maximum extent, so that the installation and the later maintenance of the pipeline are facilitated.
As described above, the present invention has at least the following advantages over the prior art:
1. compared with the bare pipe heat preservation mode, the vacuum box body mounting structure cancels the arrangement of the surface heat preservation structure of the bare pipe, releases the layout space of the pipeline and avoids the pipeline from being messy and difficult to distinguish; meanwhile, the design of the vacuum box body can effectively ensure the heat preservation treatment effect of the pipeline, so that the whole pipeline assembly basically has no frosting phenomenon.
2. Compared with the traditional vacuum box body design, the vacuum box body mounting structure strictly controls the appearance design size of the vacuum box body, the vacuum box body mounting structure is designed to occupy 1/4 of the inner space of a liquid adding machine to the maximum extent, the influence on a pipeline assembly is reduced by fully considering the appearance size design of the vacuum box body, and a vacuum tube with an emergency cut-off valve B is designed on a first circulation pipeline, so that the appearance design size of the vacuum box body is reduced, and a better heat preservation treatment effect can be achieved; and the vacuum tube is located the vacuum box outside to make liquid feeding machine inside pipeline arrange more rationally clean and tidy, brought very big convenience for later maintenance.
3. The utility model discloses the design of branch pipe and pressure transmitter that lie in quick action emergency valve B low reaches in first circulating line can effectively judge the interior liquid flow condition of pipeline, so when pressure transmitter detects that there is pressure variation and fluctuation in the pipeline, can be according to judging the interior liquid flow condition of pipeline, and then avoid the inaccurate condition of measurement that artificial adjustment quick action emergency valve B aperture or quick action emergency valve B itself closed not tightly and cause finally give the customer; the design of the pressure transmitter on the branch pipe also has the function of preventing liquid stealing, for example, if an operator does not insert the liquid adding gun into the gun socket opening but inserts the liquid adding gun into the vehicle-mounted steel cylinder when opening the second circulating pipeline, the liquid adding machine displays that the liquid is precooled by using the second circulating pipeline, and actually adds liquid to the vehicle, so that the liquid stealing phenomenon is caused; the design of the pressure transmitter can judge whether the liquid stealing phenomenon exists according to the liquid pressure change or fluctuation condition of the liquid adding gun inserted into the vehicle-mounted steel cylinder instead of the gun inserting seat port in the pipeline, the structural design is ingenious and reasonable, and the pressure transmitter has better practicability in field practice.
In summary, the utility model adopts a more reasonable layout mode of the vacuum box body and the pipeline assembly to solve the technical problem of narrow maintenance space of the liquid adding machine, on one hand, the appearance design size of the vacuum box body is reduced to the maximum extent, and more space is released for the installation and maintenance of the liquid adding machine; meanwhile, the phenomenon of large-area pipeline frosting is avoided, so that the arrangement of pipelines inside the liquid adding machine is cleaner and more tidy, and the installation and maintenance of the pipelines inside the liquid adding machine are convenient; on the other hand, the appearance design size of the vacuum box body is reduced, the manufacturing cost of the vacuum box body is also reduced, the vacuumizing time can be effectively shortened in the later vacuumizing process, great convenience is brought to the installation and maintenance of the liquid adding machine, and the vacuum box body has good practicability in practice.
Drawings
The invention will be described by way of example only and with reference to the accompanying drawings, in which
Fig. 1 is a schematic flow chart of a low-temperature vacuum box installation structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an air return process in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the liquid filling process in the embodiment of the present invention;
FIG. 4 is a schematic diagram of the first cycle of the liquid in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of the second circulation process of the liquid in the embodiment of the present invention.
Description of reference numerals: 10-a vacuum box body; 20-a gas return line; 21-air return muzzle; 22-check valve B; 23-return air flow meter; 24-a return air port; 30-a liquid feeding pipeline; 31-liquid inlet; 32-a filter; 33-liquid feeding flowmeter; 34-emergency cut-off valve A; 35-check valve a; 36-filling muzzle; 40-a first circulation line; 41-vacuum tube; 42-emergency cut-off valve B; 43-branch pipe; 44-a pressure transmitter; 50-a second circulation line; 51-liquid feeding hose; 52-liquid return line; 53-pistol-socket port; 54-check valve C.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example one
The embodiment is substantially as shown in fig. 1 to 5: the embodiment provides a low-temperature vacuum box body mounting structure, which is arranged in an LNG filling machine and comprises a pipeline assembly and a vacuum box body 10 for accommodating the pipeline assembly, wherein the pipeline assembly comprises a return air pipeline 20, a filling pipeline 30 and a first circulating pipeline 40, one end of the filling pipeline 30, which is close to a filling gun port 36, is provided with an emergency cut-off valve A34 and a check valve A35, and the emergency cut-off valve A34 and the check valve A35 are arranged on the filling pipeline 30 positioned on the inner side of the vacuum box body 10; the first circulating pipeline 40 comprises a vacuum pipe 41 communicated with the charging pipeline 30, an emergency cut-off valve B42 is arranged on the vacuum pipe 41, and the vacuum pipe 41 and the emergency cut-off valve B42 are positioned outside the vacuum box body 10, so that the vacuum pipe 41 with the emergency cut-off valve B42 in the first circulating pipeline 40 is arranged outside the heat preservation box body in the embodiment, the design size of the vacuum box body 10 is reduced to the maximum extent, and therefore, the structural design releases more space for installation and maintenance, and the technical problem that the installation and maintenance space of the charging machine is narrow can be effectively solved; in the embodiment, the vacuum box 10 is designed as the vacuum box 10 based on the rectangular structure, which is not limited to this, but certainly, the vacuum box 10 based on the circular structure may also be used, the size is designed for better controlling the appearance of the vacuum box 10, the vacuum box 10 is designed as the rectangular structure, and the volume ratio of the vacuum box 10 to the internal space of the liquid adding machine is strictly controlled to be less than or equal to 1/4, so that the installation and the later maintenance of the pipeline are facilitated, and therefore, the structural design releases more space for the installation and the maintenance, and further, the technical problem of narrow installation and maintenance space of the existing pipeline liquid adding machine can be effectively solved; and because the design of vacuum tube 41 in first circulation pipeline 40, when having reduced vacuum box 10 appearance design size, also can effectively avoid the phenomenon that the pipeline subassembly appears frosting, can reach better heat preservation treatment effect, and the liquid feeding machine internal pipeline arranges more neatly, has brought very big convenience for later maintenance.
Referring to fig. 1 and fig. 2, along the gas return direction, the gas return line 20 provided in this embodiment is sequentially provided with a gas return gun port 21, a check valve B22, a gas return flow meter 23, and a gas return port 24, wherein the check valve B22 and the gas return flow meter 23 are both located on the gas return line 20 on the left side outside the vacuum box 10; the air return pipeline 20 penetrates from the left side of the vacuum box body 10 and extends out along the bottom of the middle position of the vacuum box body 10, and the air return port 24 is arranged at the end part of the air return pipeline 20 below the vacuum box body 10; as indicated by the arrow in fig. 2, the air return process of this embodiment is specifically implemented as follows: when the air return gun is inserted into a vehicle-mounted steel cylinder, the gas in the steel cylinder after being gasified by liquid enters the air return pipeline 20 through the air return gun, so that the gas entering the air return gun port 21 sequentially passes through the check valve B22 and the air return flowmeter 23, enters the air return pipeline 20 positioned on the inner side of the vacuum box body 10 and flows out of the air return port 24 to return to the storage tank, and the gas return process is completed. The design of the return air pipeline has the following beneficial effects: the pressure in the vehicle-mounted steel cylinder is reduced, and the liquid adding speed and efficiency of the liquid adding machine can be improved; the load of the pump is reduced; the gas with the temperature rising after the gas in the vehicle-mounted steel cylinder is gasified is reduced, the steel cylinder is filled more fully, and the filling rate is high; the vehicle running distance is larger after the vehicle is filled up once.
Referring to fig. 1 and fig. 3, along the liquid filling direction, the liquid filling pipeline 30 provided in this embodiment further includes a liquid inlet 31, a filter 32, a liquid filling flowmeter 33, and a filling gun port 36, wherein the filter 32 and the liquid filling flowmeter 33 are located on the liquid filling pipeline 30 at the left side outside the vacuum chamber 10; the liquid feeding pipeline 30 penetrates from the left side of the vacuum box body 10 and extends out along the top of the left end of the vacuum box body 10, and the filling muzzle 36 is arranged at the end part of the liquid feeding pipeline 30 above the vacuum box body 10; as indicated by the direction of the arrows in fig. 3, the liquid filling process of this embodiment is specifically implemented as follows: when a vehicle enters a station for liquid adding, a liquid adding gun connected with the filling gun port 36 through a liquid adding hose 51 is inserted into a vehicle-mounted steel bottle, so that LNG low-temperature liquid in the liquid adding machine enters the liquid adding pipeline 30 through the liquid inlet 31 and sequentially enters the liquid adding pipeline 30 positioned on the inner side of the vacuum box body 10 through the filter 32 and the liquid adding flowmeter 33, and the LNG low-temperature liquid enters the steel bottle through the liquid adding hose 51 and the liquid adding gun through the filling gun port 36 positioned above the vacuum box body 10, so that the LNG low-temperature liquid adding process is completed.
In order to reduce the design size of the vacuum box 10 and achieve a better heat preservation effect, in the embodiment, the vacuum tube 41 with the emergency cut-off valve B42 in the first circulation pipeline 40 is arranged outside the heat preservation box, so that the design size of the vacuum box 10 is reduced to the maximum extent, and meanwhile, the vacuum tube 41 is used as a circulation pipeline in the first circulation pipeline 40, so that the vacuum box has a better heat preservation effect; referring to fig. 1 and 4, the first circulation pipeline 40 is designed to effectively pre-cool the liquid feeding pipeline 30 when no liquid is fed to the vehicle for a long time, so as to prevent the liquid feeding pipeline 30 from being heated to affect subsequent LNG cryogenic liquid filling; specifically, the left end of the vacuum tube 41 is communicated with the liquid feeding pipeline 30 close to the outer side of the vacuum box body 10, and the right end of the vacuum tube 41 is communicated with the air return pipeline 20 positioned on the inner side of the vacuum box body 10 and used for precooling the liquid feeding pipeline 30; the first circulation process of the liquid in this embodiment is specifically implemented as follows, as indicated by the direction of the arrows in fig. 4: when no vehicle liquid is added for a long time, the liquid adding pipeline 30 needs to be pre-cooled when the temperature rises, so that LNG low-temperature liquid in the liquid adding machine enters the vacuum pipe 41 through the liquid inlet 31 and the filter 32 and sequentially enters the first circulating pipeline 40 positioned on the inner side of the vacuum box body 10 through the emergency cut-off valve B42, the LNG low-temperature liquid flows back to the storage tank through the air return opening 24 positioned below the vacuum box body 10, the storage tank can be effectively pre-cooled, the pipeline between the pump and the liquid adding machine has a good pre-cooling effect, and the follow-up LNG low-temperature liquid can be smoothly filled through the liquid adding pipeline 30.
As a preferable scheme of the embodiment, a branch pipe 43 is arranged at one end of the first circulation pipeline 40, which is positioned inside the vacuum box 10, close to the return pipeline 20, the branch pipe 43 is positioned in the downstream direction of the emergency cut-off valve B42 in the first circulation pipeline 40, and a pressure transmitter 44 is arranged on the branch pipe 43, so that the flowing condition of liquid in the pipeline can be effectively judged, and when the pressure transmitter detects pressure change and fluctuation in the pipeline, the flowing condition of liquid in the pipeline can be judged according to the judgment, and further, the situation that the metering finally given to a client is inaccurate due to manual adjustment of the opening degree of the emergency cut-off valve B or untight closing of the; the design of the pressure transmitter on the branch pipe also has the function of preventing liquid stealing, for example, if an operator does not insert the liquid adding gun into the gun socket opening but inserts the liquid adding gun into the vehicle-mounted steel cylinder when opening the second circulating pipeline, the liquid adding machine displays that the liquid is precooled by using the second circulating pipeline, and actually adds liquid to the vehicle, so that the liquid stealing phenomenon is caused; the design of the pressure transmitter can judge whether the liquid stealing phenomenon exists according to the liquid pressure change or fluctuation condition of the liquid adding gun inserted into the vehicle-mounted steel cylinder instead of the gun inserting seat port in the pipeline, the structural design is ingenious and reasonable, and the pressure transmitter has better practicability in field practice.
Example two
The second embodiment is substantially the same as the first embodiment, except that: referring to fig. 1 and fig. 5, in order to further pre-cool the LNG cryogenic liquid filling pipe, the pipe assembly of the present embodiment further includes a second circulation pipe 50, where the second circulation pipe 50 includes a liquid filling hose 51 communicated with the filling gun port 36, a liquid return pipe 52, and a gun socket port 53 disposed at an end of the liquid return pipe 52; specifically, the gun socket port 53 is located above the right end of the vacuum box 10, the liquid return pipeline 52 extends into the vacuum box 10 from top to bottom and is communicated with the gas return pipeline 20 located in the vacuum box 10, and the liquid return pipeline 52 located inside the vacuum box 10 is provided with a check valve C54; the second circulation process of the liquid in this embodiment is specifically implemented as indicated by the arrow in fig. 5: when no vehicle liquid is added for a long time, at the moment, before the vehicle enters a station and needs liquid adding, the liquid conveying pipeline is quickly pre-cooled, the liquid adding gun is inserted into the gun inserting seat opening 53, the LNG low-temperature liquid enters the liquid adding pipeline 30 through the liquid inlet 31 and sequentially enters the liquid adding pipeline 30 positioned on the inner side of the vacuum box body 10 through the filter 32 and the liquid adding flowmeter 33, the LNG low-temperature liquid enters the liquid return pipeline 52 through the liquid adding hose 51 and the liquid adding gun through the filling gun opening 36 positioned above the vacuum box body 10, and finally enters the storage bottle through the air return opening 24 on the air return pipeline 20 communicated with the liquid return pipeline 52, so that the liquid adding hose 51 and the liquid adding gun can be effectively pre-cooled, the pre-cooling effect of the liquid adding pipeline 30 is improved, and the smooth filling of the subsequent LNG low-temperature liquid through the liquid adding pipeline is further ensured.
In conclusion, the installation structure of the vacuum box 10 in the embodiment reasonably designs the vacuum box 10, strictly controls the appearance design size of the vacuum box 10, and designs the vacuum box to occupy 1/4 of the internal space of the liquid adding machine to the maximum extent, so that more space is released for the installation and maintenance of the liquid adding machine, the technical problem that the installation and maintenance space of the liquid adding machine is narrow is solved, the appearance design size of the vacuum box 10 is reduced, the manufacturing cost of the vacuum box 10 is also reduced, the vacuumizing time can be effectively shortened in the later vacuumizing process, and great convenience is brought to the installation and maintenance of the liquid adding machine; in addition, in the embodiment, the influence on the pipeline assembly caused by the reduction of the design of the external dimension of the vacuum box body 10 is fully considered, and the vacuum pipe 41 with the emergency cut-off valve B42 is designed on the first circulating pipeline 40 close to the outer side of the vacuum box body 10, so that the external dimension of the vacuum box body 10 is reduced, and a good heat preservation treatment effect can be achieved; air return pipeline 20, liquid feeding pipeline 30, first circulating line 40 and second circulating line 50 combine the rational layout design of vacuum box in this embodiment simultaneously, can effectively guarantee that gaseous return-air process, liquid filling process and pipeline precooling process accomplish in order smoothly, and this project organization makes the inside pipeline of liquid feeding machine arrange more neatly, has also brought very big convenience for later maintenance, has better practicality in the practice.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a low temperature vacuum box mounting structure, locates inside LNG liquid feeding machine, its characterized in that: comprises that
The pipeline assembly comprises a gas return pipeline, a liquid adding pipeline and a first circulating pipeline;
a vacuum box for accommodating the pipeline assembly; one end of the liquid feeding pipeline, which is close to a filling gun port of the liquid feeding pipeline, is provided with an emergency cut-off valve A and a check valve A, and the emergency cut-off valve A and the check valve A are arranged on the liquid feeding pipeline positioned on the inner side of the vacuum box body; the first circulation pipeline comprises a vacuum pipe communicated with the liquid feeding pipeline, an emergency cut-off valve B is arranged on the vacuum pipe in a matched mode, and the vacuum pipe and the emergency cut-off valve B are located on the outer side of the vacuum box body.
2. The cryogenic vacuum box installation structure of claim 1, wherein: along gaseous return-air direction, air return gun mouth, check valve B, return-air flowmeter and return-air port have set gradually on the return-air pipeline, check valve B and return-air flowmeter all are located the return-air pipeline in the vacuum box outside on to make the return-air in-process, the gas that gets into the return-air gun mouth through the return-air gun gets into the return-air pipeline that is located the vacuum box inboard and flows out by the return-air port through check valve B and return-air flowmeter in proper order.
3. The cryogenic vacuum box installation structure of claim 2, wherein: the air return port is arranged below the vacuum box body and is arranged at the end part of the air return pipeline extending out of the bottom of the vacuum box body.
4. The cryogenic vacuum box installation structure of claim 1, wherein: along the liquid filling direction, still be provided with inlet, filter, liquid feeding flowmeter and filling gun mouth on the liquid feeding pipeline, filter and liquid feeding flowmeter are located the liquid feeding pipeline in the vacuum box outside to make the liquid filling in-process in proper order through inlet, filter and liquid feeding flowmeter get into the liquid feeding pipeline that is located the vacuum box inboard and flow out by the filling gun mouth.
5. The cryogenic vacuum box installation structure of claim 4, wherein: the filling gun port is arranged above the vacuum box body and is arranged at the end part of a liquid filling pipeline extending out of the top of the vacuum box body.
6. The cryogenic vacuum box installation structure of claim 4, wherein: one end of the vacuum tube is communicated with a liquid feeding pipeline close to the outer side of the vacuum box body, and the other end of the vacuum tube is communicated with an air return pipeline positioned on the inner side of the vacuum box body and used for pre-cooling the liquid feeding pipeline.
7. The cryogenic vacuum box installation structure of claim 6, wherein: the first circulation pipeline that is located the vacuum box inboard is close to return air pipeline one end and has set the branch pipe, the branch pipe is arranged in the downstream direction of quick action emergency valve B in the first circulation pipeline, dispose pressure transmitter on the branch pipe.
8. The cryogenic vacuum box installation structure of claim 4, wherein: the pipeline assembly still includes the second circulation pipeline, the second circulation pipeline includes the liquid feeding hose, the liquid return pipeline that communicate with the filling gun mouth and locates the rifle socket mouth of liquid return pipeline tip, the liquid return pipeline communicates with the return pipeline that is located the vacuum box to make the liquid feeding rifle at liquid feeding hose tip insert in the rifle socket mouth, liquid gets into the liquid feeding hose with filling gun mouth intercommunication through the liquid feeding pipeline, again through the liquid feeding hose get into the liquid return pipeline and flow by the return pipeline's return air port.
9. The cryogenic vacuum box installation structure of claim 8, wherein: the gun inserting seat opening is positioned above the vacuum box body, the liquid return pipeline extends into the vacuum box body from top to bottom and is communicated with the gas return pipeline, and a check valve C is arranged on the liquid return pipeline positioned on the inner side of the vacuum box body.
10. The cryogenic vacuum box installation structure of claim 1, wherein: the volume ratio of the vacuum box body to the inner space of the liquid filling machine is less than or equal to 1/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427313.6U CN211475514U (en) | 2019-12-30 | 2019-12-30 | Low temperature vacuum box mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427313.6U CN211475514U (en) | 2019-12-30 | 2019-12-30 | Low temperature vacuum box mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211475514U true CN211475514U (en) | 2020-09-11 |
Family
ID=72359243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922427313.6U Active CN211475514U (en) | 2019-12-30 | 2019-12-30 | Low temperature vacuum box mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211475514U (en) |
-
2019
- 2019-12-30 CN CN201922427313.6U patent/CN211475514U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2021201306B2 (en) | Increased storage capacity of gas in pressure vessels | |
| CN103672394A (en) | Pump-free LNG gas-filling system and liquefied natural gas processing method | |
| CN211475514U (en) | Low temperature vacuum box mounting structure | |
| CN203671240U (en) | Liquefied petroleum gas tank emptying device | |
| CN104445038A (en) | Small underground oil depot | |
| CN105953072A (en) | Gas dispenser for injecting liquefied natural gas while gas is mixed in | |
| CN110953479B (en) | Gas filling control system and control method of LNG (liquefied natural gas) double-gun gas filling machine | |
| CN104864261B (en) | LNG filling measurement method with functions of self-pre-cooling and low temperature maintaining, and apparatus | |
| CN210128238U (en) | Plain type car LNG fills dress sled | |
| CN105485515B (en) | A kind of LNG receiving stations loading system and charging method | |
| CN203783760U (en) | Double-layered fuel gas conveying system for multi-point gas inlet dual-fuel engine | |
| CN212929537U (en) | Gas circuit system of steel bottle filling gun | |
| CN106051453A (en) | Splashing preventing device of liquefied natural gas (LNG) filling machine | |
| CN207178066U (en) | A kind of vehicle-mounted LNG refrigeration vaporizers and the refrigerating transport vehicle for installing the vaporizer | |
| CN201688131U (en) | Automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device | |
| CN208058407U (en) | A kind of LNG gas stations | |
| CN108150825A (en) | The pre-cooler of low temperature ultra-large type LNG tank | |
| CN205278760U (en) | Filling system of LNG accepting station | |
| CN103343884B (en) | Liquid helium conveying system used for large-size multi-section liquid helium heat sinks and class converting method for large-size multi-section liquid helium heat sinks | |
| CN203718371U (en) | Liquefied natural gas filling machine capable of detecting inner leakage automatically | |
| CN207921732U (en) | A kind of LNG combined types aerating storage tank | |
| CN203628253U (en) | Liquefied natural gas adding device with power gas source storage tank | |
| CN112460475A (en) | Double-gun liquid adding machine | |
| CN205877699U (en) | Splash device is prevented to liquefied natural gas filling machine | |
| CN205919870U (en) | Frost -proof level gauge for low -pressure circulation barrel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201110 Address after: 610000 101, building 10, 117 South Third Road, economic and Technological Development Zone (Longquanyi District), Chengdu City, Sichuan Province Patentee after: Chengdu dexinda Energy Technology Center (limited partnership) Address before: 610000 No.10 workshop 101, No.117, Nansan Road, Chengdu Economic and Technological Development Zone (Longquanyi District), Sichuan Province Patentee before: EUP Energy Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240429 Address after: No. 4, workshop 1, floor 1, unit 1, building 1, No. 1888, Checheng West Third Road, Chengdu Economic and Technological Development Zone (Longquanyi District), Sichuan 610000 Patentee after: Youjiete clean energy Co.,Ltd. Country or region after: China Address before: Room 101, building 10, No.117, Nansan Road, Chengdu Economic and Technological Development Zone (Longquanyi District), Sichuan 610000 Patentee before: Chengdu dexinda Energy Technology Center (limited partnership) Country or region before: China |