CN109915637B - Gas connector with overcurrent protection - Google Patents
Gas connector with overcurrent protection Download PDFInfo
- Publication number
- CN109915637B CN109915637B CN201910260376.9A CN201910260376A CN109915637B CN 109915637 B CN109915637 B CN 109915637B CN 201910260376 A CN201910260376 A CN 201910260376A CN 109915637 B CN109915637 B CN 109915637B
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- China
- Prior art keywords
- gas
- connector
- movable cap
- gas channel
- overcurrent protection
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- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000012943 hotmelt Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 description 88
- 239000002737 fuel gas Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Abstract
The invention discloses a gas connector with overcurrent protection, which comprises a connector body, wherein a gas channel is arranged in the connector body, a movable cap capable of moving back and forth in the gas channel is arranged in the gas channel, a main gas channel is formed between the movable cap and the inner side wall of the gas channel, a sealing structure capable of sealing the main gas channel is also arranged between the movable cap and the inner side wall of the gas channel, when the air flow at the air inlet end of the gas channel exceeds a limiting value, the movable cap is driven to move by gas so that the main gas channel is sealed by the sealing structure, the connector body or the movable cap is provided with an auxiliary gas channel which can be conducted when the main gas channel is sealed, and a reset device capable of driving the movable cap to reset is arranged in the connector body. The invention has the overcurrent protection function, and in the overcurrent protection state, the excessively high flame in the gas appliance caused by the excessively large flow is avoided, and the occurrence of dangerous cases such as fire disaster and the like is effectively avoided.
Description
Technical Field
The invention relates to a gas connector with overcurrent protection.
Background
In daily life, people often use gas appliances for cooking, heating, lighting and the like, so gas safety is a very important problem. At present, a simple connection structure is generally adopted between the gas appliance and a gas source in the market, and some emergency situations such as: some connectors between the gas tools and the gas source do not have a flow limiting function, when the output gas flow of the gas source is too large, the combustion flame of the gas tools can become abnormally high, and the risks of gas tool overload, gas tool burning and even fire disaster and the like are easy to occur; in addition, when a fire occurs, the general gas appliance and the connecting structure thereof can not cut off the gas flow from the root, so that the safety is poor.
Therefore, how to overcome the above-mentioned drawbacks has become an important issue to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above, the present invention aims to provide a gas connector with overcurrent protection.
The invention adopts the technical proposal for solving the technical problems that:
the utility model provides a take gas connector of overflow protection, its includes the connector, be provided with the gas passageway in the connector, be provided with the movable cap that can reciprocate wherein in the gas passageway, form main air flue between the inside wall of movable cap and gas passageway, still be provided with between the inside wall of movable cap and gas passageway can seal the seal structure of main air flue, when the air current of gas passageway inlet end exceeded the limit value, the movable cap is moved by the gas drive so that main air flue is by seal structure seals, connector or movable cap are provided with the auxiliary air flue that can switch on when main air flue seals, be provided with in the connector and can drive the reset device that the movable cap reset.
Preferably, the gas connector further comprises a gas source connector arranged at the gas source output end, an elastic valve is arranged on the gas source connector, the gas connector further comprises a connecting hand wheel, the connecting body is connected with the connecting hand wheel through a hot melt protection ring, and when the connecting hand wheel is connected with the gas source connector, the connecting hand wheel drives the hot melt protection ring and the connecting body to move, so that the connecting body jacks up the elastic valve.
Preferably, the connecting body is provided with a first connecting surface facing away from the elastic valve, the connecting hand wheel is provided with a second connecting surface facing towards the elastic valve, and the hot melt protection ring is connected between the first connecting surface and the second connecting surface.
Preferably, the connecting hand wheel is in threaded connection with the air source connector.
Preferably, an annular sealing groove is formed in the outer side wall of the movable cap, the sealing structure comprises a sealing ring arranged in the sealing groove and a sealing surface arranged on the inner side wall of the fuel gas channel, and when the movable cap moves towards the gas outlet end of the fuel gas channel, the sealing ring can move along with the movable cap to be attached to the sealing surface so as to seal the main gas channel.
Preferably, the gas outlet end of the gas channel is provided with a setting member, an adjusting structure capable of adjusting the position of the setting member is arranged between the setting member and the side wall of the gas channel, and the reset device comprises a reset spring connected between the movable cap and the setting member.
Preferably, the adjusting structure comprises a threaded connection structure arranged between the setting member and the inner side wall of the gas channel.
Preferably, the auxiliary air passage is arranged on the movable cap in a penetrating manner, an air inlet end of the auxiliary air passage is provided with an air inlet small hole, and the cross section area of the air inlet small hole is smaller than that of the main air passage.
The beneficial effects of the invention are as follows:
1. the invention has the overcurrent protection function, and in the overcurrent protection state, the excessively high flame in the gas appliance caused by the excessively large flow is avoided, and the occurrence of dangerous cases such as fire disaster and the like is effectively avoided;
2. the invention has the over-temperature protection function, when a fire occurs, the hot-melt protection ring can be quickly dissolved at high temperature, the connector can be separated from the gas cylinder connector under the elastic action of the elastic valve, the gas valve is closed to cut off the gas source, and the gas appliance connected with the rear end can automatically flameout because no gas is supplied, so that the safety performance is excellent.
Drawings
FIG. 1 is a schematic view of the main part of the present invention during normal ventilation;
FIG. 2 is a schematic structural view of the main parts of the present invention in an overcurrent protection state;
fig. 3 is a schematic view of the structure of the present invention in normal ventilation.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 to 3, arrows in fig. 1 to 3 indicate air flow directions, the invention provides a gas connector with overcurrent protection, which comprises a connector body 1, wherein a gas channel 10 is arranged in the connector body 1, an air inlet end of the gas channel 10 is provided with an air inlet nozzle 8 extending outwards, and the gas channel 10 is connected with an air source through the air inlet nozzle 8. The gas channel 10 is internally provided with a movable cap 2 capable of reciprocally moving in the gas channel, a main air channel 11 is formed between the movable cap 2 and the inner side wall of the gas channel 10, a sealing structure capable of sealing the main air channel 11 is further arranged between the movable cap 2 and the inner side wall of the gas channel 10, when the air flow at the air inlet end of the gas channel 10 exceeds a limiting value, the movable cap 2 is driven to move by the gas so that the main air channel 11 is sealed by the sealing structure, the connector 1 or the movable cap 2 is provided with an auxiliary air channel 21 which can be conducted when the main air channel 11 is sealed, and a resetting device capable of driving the movable cap 2 to reset is arranged in the connector 1.
When the invention works normally, the direction of the air flow is from the air inlet end of the gas channel 10 to the main air channel 11 to the air outlet end of the gas channel 10, when the air flow force output by the air source is overlarge, the flow rate of the main air channel 11 also exceeds a limiting value, and at the moment, the movable cap 2 moves towards the air outlet end of the gas channel 10 under the pressure of the gas until the main air channel 11 is sealed by a sealing structure. After the main air passage 11 is sealed, the direction of the air flow is from the air inlet end of the gas passage 10 to the auxiliary air passage 21 to the air outlet end of the gas passage 10, at the moment, the gas flow is reduced sharply, the ignited big fire in the gas appliance can be switched into small fire suddenly, at the moment, the gas appliance is in an overcurrent protection state, and the dangerous cases such as fire disaster and the like caused by too high flame in the gas appliance due to too large flow are avoided. After the user closes the gas appliance, the internal gas path of the invention gradually reaches pressure balance, and then the movable cap 2 automatically resets under the action of the resetting device, so that the next round of work can be prepared.
Preferably, an annular sealing groove 22 is formed in the outer side wall of the movable cap 2, the sealing structure comprises a sealing ring 23 arranged in the sealing groove 22 and a sealing surface 13 arranged on the inner side wall of the gas channel 10, and when the movable cap 2 moves towards the gas outlet end of the gas channel 10, the sealing ring 23 can move along with the movable cap 2 to be attached to the sealing surface 13 so as to seal the main gas channel 11. Referring to fig. 2, the gas passage 10 is provided therein with a conical tapered section which gradually decreases toward the gas outlet end thereof, and the sealing surface 13 is formed on the inner side wall of the conical tapered section, however, the positions of the sealing surface 13 and the sealing ring 23 may be exchanged, and the sealing surface 13 may be a stepped surface provided in the gas passage 10.
Further, the gas outlet end of the gas channel 10 is provided with a setting member 6, an adjusting structure capable of adjusting the position of the setting member 6 is arranged between the setting member 6 and the side wall of the gas channel 10, and the resetting device comprises a resetting spring 7 connected between the movable cap 2 and the setting member 6. In this embodiment, the outer sidewall of the setting member 6 is screwed with the inner sidewall of the gas passage 10, and the adjusting structure includes a threaded connection structure provided between the setting member 6 and the inner sidewall of the gas passage 10. The position of the setting member 6 can be adjusted by screwing the setting member 6, and thus the travel of the movable cap 2 when the seal ring 23 is attached to the seal surface 13 can be adjusted, and the set maximum flow rate can be adjusted by adjusting the position of the setting member 6 because the elastic force of the return spring 7 is changed along with the travel of the movable cap 2. When the set maximum flow rate value needs to be adjusted up, the setting piece 6 is moved towards the movable cap 2, and when the set maximum flow rate value needs to be adjusted down, the setting piece 6 is moved towards the air outlet direction of the fuel gas channel 10.
As a preferred scheme of the invention, the auxiliary air passage 21 is penetratingly arranged on the movable cap 2, the air inlet end of the auxiliary air passage 21 is provided with an air inlet small hole 211, and the cross section area of the air inlet small hole 211 is far smaller than that of the main air passage 11. In general, the cross-sectional area of the air inlet aperture 211 should be less than one tenth of the cross-sectional area of the main air duct 11.
Referring to fig. 3, as a further improvement of the present invention, the gas connector further includes a gas source connector 3 disposed at a gas source output end, an elastic valve 31 is disposed on the gas source connector 3, the gas connector further includes a connection hand wheel 5, the connection body 1 is connected with the connection hand wheel 5 through a hot melt protection ring 4, and when the connection hand wheel 5 is connected with the gas source connector 3, the connection hand wheel 5 drives the hot melt protection ring 4 and the connection body 1 to move, so that an air inlet end of the connection body 1 is inserted into the gas source connector 3 and the elastic valve 31 is ejected.
Preferably, the connecting body 1 is provided with a first connecting surface 12 facing away from the elastic valve 31, the connecting hand wheel 5 is provided with a second connecting surface 51 facing towards the elastic valve 31, and the hot melt protection ring 4 is connected between the first connecting surface 12 and the second connecting surface 51. The hot melt protection ring 4 is made of engineering plastics with a lower melting point.
In this scheme, connecting hand wheel 5, air source connect 3, elasticity valve 31 are current mature structure, and its specific structure is not repeated, and connecting hand wheel 5 and air source connect 3 spiro union. During normal operation of the invention, the air inlet end of the connector 1 is inserted into the air source connector 3 and the elastic valve 31 is pushed open. When an emergency occurs, such as a pipeline leaking gas and catching fire, or an improper use of fire, the hot melt protection ring 4 will dissolve rapidly at high temperature, under the elastic force of the elastic valve 31, the connector 1 will separate from the gas cylinder connector, and the gas valve is closed to cut off the gas source, and the gas appliance connected to the rear end will automatically extinguish because no gas is supplied. Thus, valuable time for disposing of dangerous situations or escaping is provided for the user.
The above is only a preferred embodiment of the present invention, and the technical solutions for achieving the object of the present invention by substantially the same means are all within the scope of protection of the present invention.
Claims (8)
1. The utility model provides a take gas connector of overflow protection, its characterized in that includes connector (1), be provided with gas passageway (10) in connector (1), be provided with movable cap (2) that can reciprocate wherein in gas passageway (10), form main air flue (11) between the inside wall of movable cap (2) and gas passageway (10), still be provided with between the inside wall of movable cap (2) and gas passageway (10) and seal structure that can seal main air flue (11), when the air current of gas passageway (10) inlet end exceeds the limit value, movable cap (2) are moved by the gas drive so that main air flue (11) are sealed by seal structure, connector (1) or movable cap (2) are provided with auxiliary air flue (21) that can switch on when main air flue (11) are sealed, be provided with in connector (1) and can drive reset device that movable cap (2) reset.
2. The gas connector with the overcurrent protection according to claim 1, further comprising a gas source connector (3) arranged at the gas source output end, wherein an elastic valve (31) is arranged on the gas source connector (3), the gas connector further comprises a connecting hand wheel (5), the connecting body (1) is connected with the connecting hand wheel (5) through a hot melt protection ring (4), and when the connecting hand wheel (5) is connected with the gas source connector (3), the connecting hand wheel (5) drives the hot melt protection ring (4) and the connecting body (1) to move, so that the connecting body (1) jacks up the elastic valve (31).
3. A gas connector with overcurrent protection according to claim 2, characterized in that the connecting body (1) is provided with a first connecting surface (12) facing away from the elastic valve (31), the connecting hand wheel (5) is provided with a second connecting surface (51) facing towards the elastic valve (31), and the hot-melt protection ring (4) is connected between the first connecting surface (12) and the second connecting surface (51).
4. A gas connector with overcurrent protection according to claim 2, characterized in that the connecting hand wheel (5) is screwed with the gas source connection (3).
5. The gas connector with the overcurrent protection according to claim 1, wherein an annular sealing groove (22) is formed in the outer side wall of the movable cap (2), the sealing structure comprises a sealing ring (23) arranged in the sealing groove (22) and a sealing surface (13) arranged on the inner side wall of the gas channel (10), and when the movable cap (2) moves towards the gas outlet end of the gas channel (10), the sealing ring (23) can move along with the movable cap (2) to be attached to the sealing surface (13) so as to seal the main gas channel (11).
6. The gas connector with overcurrent protection according to claim 5, wherein the gas outlet end of the gas channel (10) is provided with a setting member (6), an adjusting structure capable of adjusting the position of the setting member (6) is arranged between the setting member (6) and the side wall of the gas channel (10), and the resetting device comprises a resetting spring (7) connected between the movable cap (2) and the setting member (6).
7. A gas connector with overcurrent protection as claimed in claim 6, wherein the adjustment structure comprises a threaded connection between the setting member (6) and the inner side wall of the gas channel (10).
8. The gas connector with the overcurrent protection according to claim 1, wherein the auxiliary air passage (21) is penetratingly arranged on the movable cap (2), an air inlet end of the auxiliary air passage (21) is provided with an air inlet small hole (211), and the cross-sectional area of the air inlet small hole (211) is smaller than that of the main air passage (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910260376.9A CN109915637B (en) | 2019-04-02 | 2019-04-02 | Gas connector with overcurrent protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910260376.9A CN109915637B (en) | 2019-04-02 | 2019-04-02 | Gas connector with overcurrent protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109915637A CN109915637A (en) | 2019-06-21 |
| CN109915637B true CN109915637B (en) | 2024-03-15 |
Family
ID=66968218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910260376.9A Active CN109915637B (en) | 2019-04-02 | 2019-04-02 | Gas connector with overcurrent protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109915637B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512967Y (en) * | 2001-09-24 | 2002-09-25 | 台山市意立达瓦斯器材有限公司 | Cut-off device for gas valve |
| KR20030008259A (en) * | 2001-07-16 | 2003-01-25 | 박진하 | Over pressure safety system for portable gas range |
| CN201170361Y (en) * | 2008-01-11 | 2008-12-24 | 广东万家乐燃气具有限公司 | Adjustable steady flow valve for water heater |
| CN201306484Y (en) * | 2008-12-10 | 2009-09-09 | 李雪波 | Gas overflow protective device |
| CN202216414U (en) * | 2011-07-26 | 2012-05-09 | 能率(中国)投资有限公司 | Water temperature/flow rate automatic regulating device |
| CN209781790U (en) * | 2019-04-02 | 2019-12-13 | 广东长青（集团）股份有限公司 | Fuel connector with super-flow protection |
-
2019
- 2019-04-02 CN CN201910260376.9A patent/CN109915637B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030008259A (en) * | 2001-07-16 | 2003-01-25 | 박진하 | Over pressure safety system for portable gas range |
| CN2512967Y (en) * | 2001-09-24 | 2002-09-25 | 台山市意立达瓦斯器材有限公司 | Cut-off device for gas valve |
| CN201170361Y (en) * | 2008-01-11 | 2008-12-24 | 广东万家乐燃气具有限公司 | Adjustable steady flow valve for water heater |
| CN201306484Y (en) * | 2008-12-10 | 2009-09-09 | 李雪波 | Gas overflow protective device |
| CN202216414U (en) * | 2011-07-26 | 2012-05-09 | 能率(中国)投资有限公司 | Water temperature/flow rate automatic regulating device |
| CN209781790U (en) * | 2019-04-02 | 2019-12-13 | 广东长青（集团）股份有限公司 | Fuel connector with super-flow protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109915637A (en) | 2019-06-21 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201013 Address after: 528415, No. 42, South Avenue, Xiaolan Town, Guangdong, Zhongshan Applicant after: Changqing thermal energy technology (Zhongshan) Co.,Ltd. Address before: No. 42, No. 42, Xiaolan Town, Guangdong, Guangdong Applicant before: GUANGDONG CHANT Group Inc. |
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