CN2791406Y - Overflow protection switch of gas cylinder - Google Patents
Overflow protection switch of gas cylinder Download PDFInfo
- Publication number
- CN2791406Y CN2791406Y CN 200520056390 CN200520056390U CN2791406Y CN 2791406 Y CN2791406 Y CN 2791406Y CN 200520056390 CN200520056390 CN 200520056390 CN 200520056390 U CN200520056390 U CN 200520056390U CN 2791406 Y CN2791406 Y CN 2791406Y
- Authority
- CN
- China
- Prior art keywords
- outer piston
- hole
- cavity
- protection switch
- gas
- 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.)
- Expired - Fee Related
Links
Landscapes
- Safety Valves (AREA)
Abstract
The utility model provides an overflow protection switch of a gas cylinder. The utility model belongs to an overflow protection device for gas. The utility model comprises a rotation valve, wherein the lower part of the rotation valve is also provided with an overflow protection switch which is composed of a casing, an outer piston, an inner piston and a spring. The utility model leads gas to be conducted and supplies protection for overflow through the self weight of the inner piston and the dynamic balance of gas consumption. The utility model has the advantages that when gas overflows, a gas source is automatically cut off and the usage is safe. The utility model is used for a gas cylinder.
Description
Technical field
The utility model relates to a kind of gas overcurrent protective device, is meant a kind of gas cylinder overcurrent protection switch especially.
Background technique
Traditional gas cylinder is only installed a rotary switch usually, supply with the gas flow of combustion gas tool by reduction valve control, but be connected that sebific duct breaks or other urgencies between gas cylinder and the combustion gas tool connecting, when the flow of combustion gas is increased suddenly, can not close the source of the gas bottle automatically, the generation that causes the accident, thereby there is above-mentioned potential safety hazard in existing gas cylinder.
The model utility content
The utility model is at the deficiencies in the prior art, can cut off source of the gas, a kind of gas cylinder overcurrent protection switch safe in utilization when a kind of combustion gas overcurrent is provided automatically.
The purpose of this utility model is achieved in that a kind of gas cylinder overcurrent protection switch, comprise rotation gate, wherein: described rotation gate bottom also be provided with the overcurrent protection switch, this overcurrent protection switch is made up of housing, outer piston, inner carrier and spring, described enclosure interior is a closed cavity, the top of cavity is provided with the through hole that is communicated with the rotation gate suction port, and cavity bottom is provided with pilot hole and a plurality of inlet hole; Outer piston is arranged in the cavity of housing, its top contacts with the hermetic seal of through hole lower edge, outer piston in through hole upper end be provided with can with the axial region of end in contact under the valve rod of rotation gate, piston base is provided with the guide-localization axle that adapts with pilot hole outside, and the guide-localization axle is arranged on also can be along its upper and lower moving in the pilot hole; Appearance is provided with outside boss on outer piston top, is provided with airtight room in the outer piston, and this top, room is provided with outlet passageway and is communicated with through hole, and the middle part, room is provided with gas-entered passageway and is communicated with cavity; Inner carrier is a spheroid, is placed in the room of outer piston, and the appearance of inner carrier can form hermetic seal with the passage lower edge; Described spring is arranged between the cavity bottom of the boss of outer piston outside and housing.
The room top passageway mouth of outer piston is fixed with the rubber seal ring that cooperates with inner carrier described in the above-mentioned gas cylinder overcurrent protection switch.
The utility model utilizes the deadweight of inner carrier and the equilibrium principle between the gas flow after adopting said structure, and when flow increased suddenly, inner carrier can move up automatically and with the outlet passageway sealing, play the purpose that prevents the combustion gas overcurrent; After on the gas cylinder the utility model being installed, can guarantee the safety that gas cylinder is used, avoid accident to take place.
Description of drawings
Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in fig. 1, gas cylinder overcurrent protection switch of the present utility model, comprise rotation gate 1, also be provided with overcurrent protection switch 2 in rotation gate 1 bottom, this overcurrent protection switch 2 is made up of housing 21, outer piston 22, inner carrier 3 and spring 24, housing 21 inside are closed cavity 210, the top of cavity 210 is provided with the through hole 211 that is communicated with rotation gate 1 suction port, be provided with pilot hole 212 in cavity 210 bottoms relative, be evenly equipped with six inlet holes 213 in cavity 21 bottoms of pilot hole 212 peripheries with through hole 211; Outer piston 22 is a cylindrical body, be arranged in the cavity 210 of housing 21, its top contacts with through hole 211 lower edge hermetic seals, outer piston 22 upper ends in through hole 211 be provided with can with the axial region 221 of end in contact under the valve rod of rotation gate 1, under the internal diameter of the external diameter of axial region 221 than through hole 211; Be fixed with the guide-localization axle 222 that adapts with pilot hole 212 in outer piston 22 bottoms, guide-localization axle 222 is arranged on also can be along its upper and lower moving in the pilot hole 212; Be provided with outside boss 223 in outer piston 22 top appearances; Be provided with airtight room 224 in the outer piston 22, these 224 tops, room are provided with outlet passageway 225 and are communicated with through hole 211, and the outlet passageway at 224 tops is fixed with the rubber seal ring 25 that cooperates with inner carrier 23 for 225 mouthfuls in the room; 224 middle parts, room are provided with gas-entered passageway 226 and are communicated with cavity 210; Inner carrier 23 is a spheroid, is placed in the room 224 of outer piston 22, and the appearance of inner carrier 23 can form hermetic seal with passage 225 lower edges; Spring 24 is arranged between cavity 210 bottoms of the boss 223 of outer piston 22 outsides and housing 21.
When the utility model is specifically practical, the shell 21 of overcurrent protection switch 2 is fixedly connected on the gas cylinder, when needing to use combustion gas, rotation gate 1 opened get final product, combustion gas is in inlet hole 213, cavity 210, enter rotation gate 1 behind gas-entered passageway 226, outlet passageway 225, the through hole 211, behind reduction valve, burn to the combustion gas tool; When gas flow increased suddenly, 225 mouthfuls of rubber seal rings 25 that cooperate with inner carrier 23 of outlet passageway that inner carrier 23 is moved upward to 224 tops, room contacted the formation hermetic seal, and the short fuel gas path of resistance prevents the combustion gas overcurrent.If desired inner carrier 23 is resetted again, rotation gate 1 should be closed, make the axial region 221 of extruding outer piston 22 upper ends, valve rod lower end of rotation gate 1, pressure spring 24 makes outer piston 22 move down 1～1.5mm, get final product the pressure on balance inner carrier 23 both sides, inner carrier 23 resets under the effect of self gravitation.To identical in the inflation of combustion bottle and the prior art, only need open rotation gate 1, the elastic force that can overcome spring 24 because of the combustion gas of outside with outer piston 22 to pressing down, outer piston 22 is separated with through hole 211 lower edges, combustion gas can charge in the gas cylinder, in case outside combustion gas is closed, outer piston 22 promptly moves up automatically and through hole 211 lower edges form hermetic seal.The utility model is set at Qn=0.6M with the rated flow of overcurrent protection switch 2 usually
3/ h, safe action flow＞1.5Qn, closing pressure≤3.6kPa.
Claims (2)
1. gas cylinder overcurrent protection switch, comprise rotation gate (1), it is characterized in that: described rotation gate (1) bottom also be provided with overcurrent protection switch (2), this overcurrent protection switch (2) is made up of housing (21), outer piston (22), inner carrier (23) and spring (24), described housing (21) inside is closed cavity (210), the top of cavity (210) is provided with the through hole (211) that is communicated with rotation gate (1) suction port, is provided with pilot hole (212) and a plurality of inlet hole (213) in cavity (210) bottom; Outer piston (22) is arranged in the cavity (210) of housing (21), its top contacts with through hole (211) lower edge hermetic seal, outer piston (22) in through hole (211) upper end be provided with can with the axial region (221) of end in contact under the valve rod of rotation gate (1), be provided with the guide-localization axle (222) that adapts with pilot hole (212) in outer piston (22) bottom, guide-localization axle (222) is arranged on also can be along its upper and lower moving in the pilot hole (212); Appearance is provided with outside boss (223) on outer piston (22) top, (22) are provided with airtight room (224) in the outer piston, top, this room (224) is provided with outlet passageway (225) and is communicated with through hole (211), and room (224) middle part is provided with gas-entered passageway (226) and is communicated with cavity (210); Inner carrier (23) is a spheroid, is placed in the room (224) of outer piston (22), and the appearance of inner carrier (23) can form hermetic seal with passage (225) lower edge; Described spring (24) is arranged between cavity (210) bottom of outside boss (223) of outer piston (22) and housing (21).
2. gas cylinder overcurrent protection switch according to claim 1 is characterized in that: room (224) top passageway (225) mouth in outer piston (22) is fixed with the rubber seal ring (25) that cooperates with inner carrier (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520056390 CN2791406Y (en) | 2005-03-31 | 2005-03-31 | Overflow protection switch of gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520056390 CN2791406Y (en) | 2005-03-31 | 2005-03-31 | Overflow protection switch of gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2791406Y true CN2791406Y (en) | 2006-06-28 |
Family
ID=36807476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520056390 Expired - Fee Related CN2791406Y (en) | 2005-03-31 | 2005-03-31 | Overflow protection switch of gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2791406Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930206A (en) * | 2014-03-17 | 2015-09-23 | 麦格纳斯太尔工程两合公司 | Stop valve |
-
2005
- 2005-03-31 CN CN 200520056390 patent/CN2791406Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930206A (en) * | 2014-03-17 | 2015-09-23 | 麦格纳斯太尔工程两合公司 | Stop valve |
| CN104930206B (en) * | 2014-03-17 | 2018-06-19 | 麦格纳斯太尔工程两合公司 | Shut-off valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201159033Y (en) | Airtight door | |
| CN2791406Y (en) | Overflow protection switch of gas cylinder | |
| CN214119066U (en) | Outlet pressure control valve for refrigeration system | |
| CN206572028U (en) | Can pressure release type check valve | |
| CN206432341U (en) | Safety-type lithium battery | |
| CN205315789U (en) | Air charging nozzle | |
| CN110953387A (en) | Aerostatics utricule fills gassing all-in-one | |
| CN201309658Y (en) | Bottle cap capable of reducing negative pressure in plastic water cup | |
| CN206347191U (en) | A kind of built-in gas table control valve pilot mechanism | |
| CN203783879U (en) | Pressure release valve of hydraulic pump | |
| CN202501017U (en) | Solenoid valve for automatic gas emergency cutoff | |
| CN202691135U (en) | Membrane type pneumatic diaphragm valve | |
| CN200993241Y (en) | Water-sealed butterfly valve | |
| CN206234416U (en) | A kind of rotary safe valve for bus | |
| CN201547925U (en) | Rectangular check valve of low leakage ventilation system | |
| CN2828307Y (en) | Arrow drilling tool check valve | |
| CN2828467Y (en) | Inflation seal ring | |
| CN2771593Y (en) | Two-way air-mould valve | |
| CN2898499Y (en) | Air valve | |
| CN202451454U (en) | Lining of pump head | |
| CN201651471U (en) | Automobile oil tank safety valve | |
| CN202790741U (en) | Oil tank constant pressure pressure-reducing valve | |
| CN204176055U (en) | A kind of axial flow gas control balance stop valve | |
| CN203548685U (en) | Internal fine groove air intake stay wire type air damper | |
| CN204328101U (en) | A kind of inhalation valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 |