CN102954348A - Switch valve and gas-filling device of gas cylinder - Google Patents
Switch valve and gas-filling device of gas cylinder Download PDFInfo
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- CN102954348A CN102954348A CN2011102455296A CN201110245529A CN102954348A CN 102954348 A CN102954348 A CN 102954348A CN 2011102455296 A CN2011102455296 A CN 2011102455296A CN 201110245529 A CN201110245529 A CN 201110245529A CN 102954348 A CN102954348 A CN 102954348A
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Abstract
The invention discloses a switch valve and a gas-filling device of a gas cylinder. The gas-filling device comprises the switch valve connected to a gas cylinder, a manual inflator, and a connection pipe for connecting the switch valve and the manual inflator. The switch valve comprises a valve seat which is connected to an opening of the gas cylinder, a switch unit which is installed on the valve seat and is used for releasing a liquid and blocking a liquid from entering into the gas cylinder, and a connection unit. The connection unit comprises a plug located at one side of the valve seat and a joint located at the other side of the valve seat. The adjacent switch valves can be connected by the opposite plugs and joints so that multiple gas cylinders can be communicated and thus a stored liquid amount is greatly improved and practicality and use convenience are obtained.
Description
Technical field
The present invention relates to a kind of switch valve, particularly relate to a kind of fluid of can controlling and pass in and out the switch valve of gas cylinder and the inflator of gas cylinder.
Background technique
Intelligence toys such as building blocks etc., the creativity that can agitate mentality and inspire children, and help children to think independently, thereby extensively be subjected to Consumer's welcome and like.Yet, how by educating the angle that inspires, instruct protection of the child earth resource, understand the power source of the nature such as the sun, air, water, reach the purpose of teaching through lively activities, be the target that present industry does one's utmost to develop.
Consult Fig. 1, can drive the air pressure hydrodynamic(al) device 1 of building block unit as example take No. 214799 case of TaiWan, China patent certificate, a recovery cylinder 11 that mainly comprises exportable and recycle-water, stored-gas and water form a gas cylinder 12 of Pneumatic water, extract the pump 13 that water in this recovery cylinder 11 and ambient air enter this gas cylinder 12, discharge a switching group 14 of these gas cylinder 12 internal air pressure water, utilize Pneumatic water to produce an air pressure hydrodynamic(al) motor 15 of power, and be communicated with this recovery cylinder 11, this gas cylinder 12, this pump 13, this switching group 14 forms a pipeline group 16 of a circulation loop with this air pressure hydrodynamic(al) motor 15.
When the Pneumatic water in these switching group 14 these gas cylinders 12 of release, just can drive this air pressure hydrodynamic(al) motor 15 and produce powerful and lasting power, make a building block unit 2 produce smooth and easy and continuous action.
Yet, because 14 of aforementioned pump 13, gas cylinder 12 and switching group are communicated with by this pipeline group 16, and can't open separately, close, therefore, in use, all assemblies all will be installed on this building block unit 2, and not only pipeline is complicated, and can only use each time one by one gas cylinder 12, the space that can promote is still being arranged aspect the vitality of power.
Summary of the invention
The object of the present invention is to provide a kind of switch valve of gas cylinder of the Fluid Volume that can significantly promote storage and the inflator of gas cylinder.
The switch valve of gas cylinder of the present invention is applicable to a plurality of being serially connected, and this gas cylinder has a bottleneck, and the switch valve of this gas cylinder comprises: a valve seat, a switch element and a linkage unit.This valve seat has a valve nozzle that is connected with this bottle mouth of gas cylinder, and extends and be communicated with a first flow of this valve nozzle along an axial direction.This switch element is installed in this valve seat, be used for release fluids and enter this gas cylinder, and the fluid of blockading enters this gas cylinder.This linkage unit has a plug being formed on this valve seat one side and being communicated with this first flow, be formed on this valve seat opposite side and be communicated with a joint of this first flow, and be set between this joint and this first flow and be used for an air inlet bolt of this joint of sealing, this plug can or supply the joint of another switch valve to connect for injecting gas, and when this joint is connected in the plug of another switch valve that is connected, this air inlet bolt can be forced to open in the plug of the switch valve that is connected, so that this first flow is communicated with joint.
The switch valve of gas cylinder of the present invention, the joint of this linkage unit is hubbed on this valve seat, and has an a pair of block that relatively is formed on its internal surface and defines a Da Jing district and a path district, this plug has the outstanding section of placing, and relatively be formed on this section of placing outer surface and Zhou Jing less than this Da Jing district and greater than a pair of fin in this path district, this section of placing can be set in the joint of the switch valve that is connected, aforementioned fin can be by the Da Jing district of the joint that is connected, and is hampered by this to block with the joint turn that this is connected.
The switch valve of gas cylinder of the present invention, this linkage unit also have be set in this first flow and around this axis define a duct an external member, pass a screw piece that screws togather and define around this axis a perforation behind this joint with this valve seat, and elastic component, this air inlet bolt has an air inlet tightening latch that is set in this external member duct, and be set in an air inlet bolt head in this screw piece perforation, this elastic component is nested with between this external member and this air inlet bolt head, there be not under the External Force Acting hermetic closed this perforation of this air inlet bolt head of permanent ejection.
The switch valve of gas cylinder of the present invention, this valve seat also has second runner that intersects and be communicated with this valve nozzle with this first flow, this switch element has a switch valve member that passes this second runner, and this switch valve member can enter of this valve nozzle at the fluid of blockading and close valve position and release fluids and enter of this valve nozzle and open between valve position and switch.
The switch valve of gas cylinder of the present invention, this valve seat also has this valve nozzle of connection and this first flow, a pore of the second runner, and this switch element also has and is set in this valve nozzle and around the collar of this pore, an inflation bolt, and elastic element, this inflation bolt has an inflation tightening latch that is set in this collar, and be set in an inflation bolt head in this pore, this elastic element is nested with between this collar and this inflation bolt head, do not having under the External Force Acting, permanent ejection should be inflated hermetic closed this pore of bolt head, this switch valve member can make at this inflation bolt head of an ejection valve position of opening in a gap of inflation bolt head and this pore formation, and a turn between valve position of closing that gets loose this inflation bolt head.
The switch valve of gas cylinder of the present invention, this switch valve member has relatively this inflation bolt head and the wide unequal major axis section in footpath and a minor axis section, and be emerging in outer one of this valve seat and dial control, this group control is in the turn process, this minor axis section turn of interlock is to the valve position that closes of relative this inflation bolt head, and this major axis section turn of interlock is to the valve position of opening of this inflation bolt head of ejection.
The inflator of gas cylinder of the present invention, this gas cylinder have a bottleneck, and this inflator comprises: the switch valve of at least one described gas cylinder, a pump and an adapter.This pump has a cylindrical shell, is set in a stopper rod in this cylindrical shell by this cylindrical shell one end, and is formed on this cylindrical shell the other end and defines a plug and a suction port of an air outlet.This adapter has a pipe fitting, and is arranged on two joints at these pipe fitting two ends, and the joint of this adapter is connected with the plug of this switch valve, the plug of this pump respectively.
Beneficial effect of the present invention is: adjacent switch valve can interconnect with relative plug and joint, and most gas cylinders are ganged up, and can significantly promote the Fluid Volume of storage, makes the present invention also have in the use practicability and convenience.
Description of drawings
Fig. 1 is a stereogram, and No. 214799 case of TaiWan, China patent certificate is described;
Fig. 2 is a three-dimensional exploded view, and a preferred embodiment of the inflator of the switch valve of gas cylinder of the present invention and gas cylinder is described;
Fig. 3 is a combination stereogram of this preferred embodiment;
Fig. 4 is the sectional view along Fig. 3 hatching line IV-IV;
Fig. 5 is the sectional view along Fig. 3 hatching line V-V;
Fig. 6 is a sectional view, illustrates that a plug places in the joint in this preferred embodiment;
Fig. 7 is a sectional view, illustrates that this plug is hampered by this joint in this preferred embodiment;
Fig. 8 is a sectional view, illustrates that the switch valve member is positioned in this preferred embodiment to close valve position;
Fig. 9 is a stereogram, illustrates that most gas cylinders are connected in series mutually in this preferred embodiment;
Figure 10 is a sectional view, illustrates that most gas cylinders are interconnected in this preferred embodiment;
Figure 11 is a stereogram, illustrates that this preferred embodiment is assembled in a building block unit.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples.
Consult Fig. 2, a preferred embodiment of inflator of the present invention cooperates a gas cylinder 3 to use.This gas cylinder 3 has a bottleneck 31.Cooperate and consult Fig. 3, Fig. 4, and Fig. 5, this inflator comprises by a valve seat 4, a switch element 5, a switch valve, the pump 7 that linkage unit 6 forms, and one is taken over 8.
This valve seat 4 have a valve nozzle 41 screwing togather with this gas cylinder 3 bottlenecks 31 and be connected, along an axial direction extend and be communicated with this valve nozzle 41 a first flow 42, intersect and be communicated with second runner 43 of this valve nozzle 41 with this first flow 42, and be communicated with a pore 44 of this valve nozzle 41 and this first flow 42, the second runner 43.
This switch element 5 has a collar 51, an inflation bolt 52, an elastic element 53, and a switch valve member 54.This collar 51 is set in this valve nozzle 41 and around this pore 44.This inflation bolt 52 has an inflation tightening latch 521 that is set in this collar 51, and is set in an inflation bolt head 522 in this pore 44.This elastic element 53 is nested with on 522 on this collar 51 and this inflation bolt head, is not having under the External Force Acting, and permanent ejection should inflation bolt head 522 and these pore 44 airtight contacts, and sealed porosity 44.This switch valve member 54 passes this second runner 43, and has relatively this inflation bolt head 522 and the wide unequal major axis section 541 in footpath and a minor axis section 542, and is emerging in one group of control 543 outside this valve seat 4.This group control 543 is in the turn process, these minor axis section 542 turns of interlock to relatively and of this inflation bolt head 522 that gets loose close valve position (such as Fig. 8), reach these major axis section 541 turns of interlock to ejection and should inflate bolt head 522, drive valve position (such as Fig. 5) for one that makes this inflation bolt head 522 and this pore 44 form a gap.
This linkage unit 6 has an external member 61, a screw piece 62, a joint 63, an air inlet bolt 64, an elastic component 65, and a plug 66.This external member 61 is set in this first flow 42 and around this axis X and defines a duct 610.This screw piece 62 passes behind this joint 63 and this valve seat 4 screws togather, and makes this joint 63 be hubbed on this valve seat 4 one sides, and has a perforation 621 that extends along this axis X.This joint 63 is communicated with these first flows 42, and has and relatively be formed on an internal surface and define a Da Jing district 631 (such as Fig. 6) and a pair of block 633 in a path district 632 (such as Fig. 6).This air inlet bolt 64 has an air inlet tightening latch 641 that is set in these external member 61 ducts 610, and is set in an air inlet bolt head 642 in these screw piece 62 perforations 621.This elastic component 65 is arranged on 642 on this external member 61 and this air inlet bolt head, is not having under the External Force Acting these air inlet bolt head 642 hermetic closed these perforations 621 of permanent ejection.This plug 66 is formed on this valve seat 4 opposite sides, and has a section of placing 661 from outward projection of this valve seat 4, reach a pair of fin 662 that relatively is formed on this section of placing 661 outer surfaces, this plug 66 is in the maximum Zhou Jing at described fin place less than these Da Jing district 631 bores, but greater than these path district 632 bores.
This pump 7 has a cylindrical shell 71, is plugged on a stopper rod 72 in this cylindrical shell 71 by these cylindrical shell 71 1 ends, and is formed on these cylindrical shell 71 the other ends and defines a plug 74 and a suction port 75 of an air outlet 73.This plug 74 has a section of placing 741, and relatively is formed on a pair of fin 742 of this section of placing 741 outer surfaces.
This adapter 8 has a pipe fitting 81, and is arranged on two joints 82 at these pipe fitting 81 two ends.Described joint 82 has respectively a pair of block 823 that relatively is formed on its internal surface and defines a Da Jing district 821 (such as Fig. 6) and a path district 822 (such as Fig. 6).And it is worth mentioning that, the footpath in this Da Jing district 821 is wider than aforementioned fin 662,742 maximum Zhou Jing, and the footpath in this path district 822 is wide less than aforementioned fin 662,742 maximum Zhou Jing.
Consult Fig. 2, Fig. 5, Fig. 6 and Fig. 7, during inflation, only need utilize the aforementioned joint 82 of this adapter 8 to be socketed respectively the plug 74 of this pump 7 and the plug 66 on this valve seat 4, make fin 662, the 742 Da Jing district 821 by aforementioned joint 82 respectively on this plug 66,74, then, the aforementioned joint 82 of turn to aforementioned block 823 stops aforementioned fin 662,742 again, just aforementioned joint 63,82 can be positioned on the aforementioned plug 66,74, and this pump 7 is communicated with this valve seat 4 by this adapter 8.
At this moment, when this switch valve member 54 is positioned at this and drives valve position, can be formed a gap with this pore 44 by the inflation bolt head 522 of these major axis section 541 ejections, this air inlet bolt 64 can be subjected to this elastic component 65 the elastic force effect and with these perforation 621 airtight contacts, and sealing perforation 621, at this moment, only need back and forth pump this stopper rod 72, just can guide ambient air by this suction port 75 through this air outlet 73, this pipe fitting 81 enters the first flow 42 in this valve seat 4, again by this first flow 42 through this second runner 43, aforementioned inflation bolt head 522 enters in this gas cylinder 3 with the gap of this pore 44.
It is worth mentioning that, the suction port 75 of this pump 7 can an external water source (not shown), and synchronous attraction water enters in this cylindrical shell 71, whereby, the fluids such as water, air is delivered in this gas cylinder 3.
Consult Fig. 2, Fig. 8, after inflation is finished, only need the control 543 of dialling of this switch valve member 54 of turn to close valve position to this, make this major axis section 541 break away from this inflation bolt head 522, at this moment, this inflation bolt 52 can be subject to the elastic force effect of this elastic element 53, multiple again hermetic closed this pore 44, and the air pressure in this gas cylinder 3 of blockading leaks.Whereby, only need unload this adapters 8, this pump 7, valve seat 4 and this gas cylinder 3 that is connected just can become the individuality of an individualism, and during use, only need again this switch valve member 54 of turn to drive valve position to this, just can reach the purpose that discharges the air pressure in the gas cylinder 3.
Consult Fig. 6, Fig. 9, Figure 10, importantly, the present invention can be by connecting most switch valves most the gas cylinders 3 of contacting, during use, plug 66 with this valve seat 4 places in the joint 63 of adjacent valve seat 4 respectively, make the fin 662 Da Jing district 631 by this joint 63 respectively on this plug 66, then, this joint 63 of turn to aforementioned block 633 stops aforementioned fin 662 again, just this joint 63 can be positioned on this plug 66, and because after this plug 66 places this joint 63, can form a gap with this perforation 621 by this air inlet bolt 64 of ejection, the first flow 42 of adjacent valve seat 4 is interconnected, whereby, at Fig. 9, air inlet bolt 64 in 10 rightmost side valve seats 4 still seals under the situation of this perforation 621, the same valve seat 4 and this pump 7 that only needs to take over by this 8 connection diagrams, 9 leftmost sides, just can be with water, the fluids such as air are delivered in all gas cylinders 3 simultaneously, and only need the switch valve member 54 of control graph 9 leftmost side valve seats 4 just can reach unlatching, close the purpose of all gas cylinders 3, the switch valve member 54 that perhaps can sequentially control from left to right on each valve seat 4 is positioned at out valve position, makes aforementioned gas cylinder 3 discharge one by one air pressure.
Consult Figure 11, whereby, aforementioned gas cylinder 3 can be assembled in separately on the building block unit 91, required air pressure when supplying power building blocks 92 and producing power, and do not need to comprise as shown in Figure 5 pump 7, and most gas cylinders 3 can well-off power, prolongs the actuation time of this building block unit 91.
According to the above as can be known, the inflator of the switch valve of gas cylinder of the present invention and gas cylinder has following advantages and effect:
Each switch valve of the present invention can both independently open or cut out, and become the individuality of an individualism, therefore, when the aforementioned switch valve that gas cylinder 3 is installed is assembled in this building block unit 91, do not need to comprise pump 7, and can room for promotion benefit and simplified assembly, and adjacent switch valve can interconnect with relative plug 66 and joint 63, most gas cylinders 3 are ganged up, and can significantly promote the amount of gas pressure of storage, make children understand the transmission situation of power source (air pressure) and the proportional relation of amount of gas pressure and power time, not only the purpose of teaching through lively activities can be reached, and convenience and practicability on using can be promoted.
Claims (7)
1. the switch valve of a gas cylinder is applicable to a plurality of being serially connected, and this gas cylinder has a bottleneck, it is characterized in that the switch valve of this gas cylinder comprises:
A valve seat has a valve nozzle that is connected with this bottle mouth of gas cylinder, and extends and be communicated with a first flow of this valve nozzle along an axial direction;
A switch element is installed in this valve seat, be used for release fluids and enter this gas cylinder, and the fluid of blockading enters this gas cylinder; And
A linkage unit, have a plug being formed on this valve seat one side and being communicated with this first flow, be formed on this valve seat opposite side and be communicated with a joint of this first flow, and be set between this joint and this first flow and be used for an air inlet bolt of this joint of sealing, this plug can or supply the joint of another switch valve to connect for injecting gas, and when this joint is connected in the plug of another switch valve that is connected, this air inlet bolt can be forced to open in the plug of the switch valve that is connected, so that this first flow is communicated with joint.
2. the switch valve of gas cylinder according to claim 1, it is characterized in that: the joint of this linkage unit is hubbed on this valve seat, and has an a pair of block that relatively is formed on its internal surface and defines a Da Jing district and a path district, this plug has the outstanding section of placing, and relatively be formed on this section of placing outer surface and Zhou Jing less than this Da Jing district and greater than a pair of fin in this path district, this section of placing can be set in the joint of the switch valve that is connected, aforementioned fin can be by the Da Jing district of the joint that is connected, and is hampered by this to block with the joint turn that this is connected.
3. the switch valve of gas cylinder according to claim 1 and 2, it is characterized in that: this linkage unit also has an external member that is set in this first flow and defines a duct around this axis, pass a screw piece that screws togather and define around this axis a perforation behind this joint with this valve seat, and elastic component, this air inlet bolt has an air inlet tightening latch that is set in this external member duct, and be set in an air inlet bolt head in this screw piece perforation, this elastic component is nested with between this external member and this air inlet bolt head, there be not under the External Force Acting hermetic closed this perforation of this air inlet bolt head of permanent ejection.
4. the switch valve of gas cylinder according to claim 1, it is characterized in that: this valve seat also has second runner that intersects and be communicated with this valve nozzle with this first flow, this switch element has a switch valve member that passes this second runner, and this switch valve member can enter of this valve nozzle at the fluid of blockading and close valve position and release fluids and enter of this valve nozzle and open between valve position and switch.
5. the switch valve of gas cylinder according to claim 4, it is characterized in that: this valve seat also has this valve nozzle of connection and this first flow, a pore of the second runner, and this switch element also has and is set in this valve nozzle and around the collar of this pore, an inflation bolt, and elastic element, this inflation bolt has an inflation tightening latch that is set in this collar, and be set in an inflation bolt head in this pore, this elastic element is nested with between this collar and this inflation bolt head, do not having under the External Force Acting, permanent ejection should be inflated hermetic closed this pore of bolt head, this switch valve member can make at this inflation bolt head of an ejection valve position of opening in a gap of inflation bolt head and this pore formation, and a turn between valve position of closing that gets loose this inflation bolt head.
6. the switch valve of gas cylinder according to claim 5, it is characterized in that: this switch valve member has relatively this inflation bolt head and the wide unequal major axis section in footpath and a minor axis section, and be emerging in outer one of this valve seat and dial control, this group control is in the turn process, this minor axis section turn of interlock is to the valve position that closes of relative this inflation bolt head, and this major axis section turn of interlock is to the valve position of opening of this inflation bolt head of ejection.
7. the inflator of a gas cylinder, this gas cylinder has a bottleneck, it is characterized in that this inflator comprises:
At least one is such as the switch valve of the described gas cylinder of arbitrary claim in the claim 1 to 6;
A pump has a cylindrical shell, is set in a stopper rod in this cylindrical shell by this cylindrical shell one end, and is formed on this cylindrical shell the other end and defines a plug and a suction port of an air outlet; And
, an adapter has a pipe fitting, and is arranged on two joints at these pipe fitting two ends, and the joint of this adapter is connected with the plug of this switch valve, the plug of this pump respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110245529.6A CN102954348B (en) | 2011-08-25 | 2011-08-25 | Switch valve and gas-filling device of gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110245529.6A CN102954348B (en) | 2011-08-25 | 2011-08-25 | Switch valve and gas-filling device of gas cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102954348A true CN102954348A (en) | 2013-03-06 |
| CN102954348B CN102954348B (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110245529.6A Active CN102954348B (en) | 2011-08-25 | 2011-08-25 | Switch valve and gas-filling device of gas cylinder |
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| Country | Link |
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| CN (1) | CN102954348B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812397A (en) * | 2017-11-20 | 2019-05-28 | 吴树木 | It can be to the inflator that tubeless tyre is inflated |
| CN110030177A (en) * | 2018-01-12 | 2019-07-19 | 极点股份有限公司 | Gas-charging connection and its combination with storage cylinder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3235512A1 (en) * | 1982-09-24 | 1984-03-29 | Philipp Kreis GmbH & Co Truma-Gerätebau, 8000 München | Safety device for gas connection lines, in particular for movable rooms |
| JPH09184599A (en) * | 1996-01-05 | 1997-07-15 | Ckd Corp | Gas supplying stacked unit |
| DE29802433U1 (en) * | 1998-02-16 | 1998-09-17 | GOK Regler- und Armaturen- Gesellschaft mbH & Co. KG, 97342 Seinsheim | Automatic valve for LPG |
| TW563585U (en) * | 2002-10-30 | 2003-11-21 | Genius Toy Taiwan Co Ltd | Pneumatic water-powered device capable of driving unit of building blocks |
| US20070163662A1 (en) * | 2004-02-24 | 2007-07-19 | Reilly Joseph P | Proportional pressure control valve |
| CN201322182Y (en) * | 2008-12-26 | 2009-10-07 | 张海辉 | CNG safe fast charge system with control screen |
| US20090293976A1 (en) * | 2008-06-02 | 2009-12-03 | Stretch Dale A | Two position three way valve |
-
2011
- 2011-08-25 CN CN201110245529.6A patent/CN102954348B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3235512A1 (en) * | 1982-09-24 | 1984-03-29 | Philipp Kreis GmbH & Co Truma-Gerätebau, 8000 München | Safety device for gas connection lines, in particular for movable rooms |
| JPH09184599A (en) * | 1996-01-05 | 1997-07-15 | Ckd Corp | Gas supplying stacked unit |
| DE29802433U1 (en) * | 1998-02-16 | 1998-09-17 | GOK Regler- und Armaturen- Gesellschaft mbH & Co. KG, 97342 Seinsheim | Automatic valve for LPG |
| TW563585U (en) * | 2002-10-30 | 2003-11-21 | Genius Toy Taiwan Co Ltd | Pneumatic water-powered device capable of driving unit of building blocks |
| US20070163662A1 (en) * | 2004-02-24 | 2007-07-19 | Reilly Joseph P | Proportional pressure control valve |
| US20090293976A1 (en) * | 2008-06-02 | 2009-12-03 | Stretch Dale A | Two position three way valve |
| CN201322182Y (en) * | 2008-12-26 | 2009-10-07 | 张海辉 | CNG safe fast charge system with control screen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812397A (en) * | 2017-11-20 | 2019-05-28 | 吴树木 | It can be to the inflator that tubeless tyre is inflated |
| CN110030177A (en) * | 2018-01-12 | 2019-07-19 | 极点股份有限公司 | Gas-charging connection and its combination with storage cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102954348B (en) | 2014-12-24 |
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