CN2765022Y - Combustion gas valve - Google Patents
Combustion gas valve Download PDFInfo
- Publication number
- CN2765022Y CN2765022Y CN 200420118086 CN200420118086U CN2765022Y CN 2765022 Y CN2765022 Y CN 2765022Y CN 200420118086 CN200420118086 CN 200420118086 CN 200420118086 U CN200420118086 U CN 200420118086U CN 2765022 Y CN2765022 Y CN 2765022Y
- Authority
- CN
- China
- Prior art keywords
- gas
- valve body
- embolism
- flow path
- valve
- 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
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Abstract
The utility model relates to a combustion gas valve which comprises a body provided with an inflow opening and an outflow opening. A plug chamber used for containing a plug with a ventilating path is formed between the inflow opening and the outflow opening. The plug can be rotated in a way that a handle is operated so as to open and close a gas passage, wherein the gas valve is provided with a super flow interrupting device which is installed inside the ventilating path of the plug. The super flow interrupting device can automatically close the gas passage when the gas flow exceeds the limited flow. The gas valve is also provided with an overheating interrupting device which is arranged inside the inflow opening of the body. The overheating interrupting device can automatically close the gas passage when the temperature is higher than a limited temperature.
Description
Technical field
The utility model system is about a kind of gas valve, especially a kind of the installation in the embolism inside that opens and closes fuel gas path one surpasses the flow cut-off, at the overheated cut-off of the inner installation of inflow entrance, can when surpassing limited flow rate or temperature and be higher than limiting temperature, gas flow seal the gas valve of fuel gas path automatically.
Background technique
Fig. 1 shows the thin portion of an existing gas valve, and it is disclosed in novel the 8820305 No. nine patent case of TaiWan, China of designer's application.The major character of this gas valve 90 is, have overheated cut-off 91 and super flow cut-off 92 simultaneously, the function that the former carries out is, be heated because of pyric factor at gas valve 90, the temperature that causes its bimetallic strip 93 is higher than limiting temperature when above, valve body 94 is the sealing fuel gas path automatically, stops the supply of combustion gas, prevents that fire from enlarging.The latter occurs in the situation etc. that breaks away from Gas appliance as combustion gas with flexible pipe, and the gaseous-pressure difference that makes valve body 95 front and back is during greater than the elastic-restoring force of spring 96, valve body 95 is moved and seals fuel gas path, stops combustion gas to continue to disengage, and avoids causing the gas gas explosion.
Because this gas valve 90 is that overheated cut-off 91 and super flow are passed the inflow entrance 98 that disconnected device 92 is installed in body 97 simultaneously, therefore takes up space, gas valve 90 needs long body 97 to admit them as a result.
In addition, aspect super flow cut-off 92, the involution of its valve body 95 is still needed and could involution be opened valve position by the effect of the promotion of overheated cut-off 91 and himself spring 96, belongs to indirect involution.
Summary of the invention
Therefore, the purpose of this utility model is to provide a kind of gas valve of improvement, it has and one surpasses the circulation flow path inside that the flow cut-off is installed in embolism, when gas flow surpasses limited flow rate, automatically the sealing fuel gas path stops the supply of combustion gas, does not account for the space of gas valve body so on the one hand, can when rotating embolism, make its valve body involution open valve position simultaneously.
Another purpose of the present utility model is to provide a kind of gas valve of improvement, and it has the inflow entrance inside that an overheated cut-off is installed in body, when temperature is higher than limiting temperature, seals fuel gas path automatically, stops the supply of combustion gas.
Realize the gas valve of the utility model purpose, comprise a body with inflow entrance and outflow opening, between inflow entrance and outflow opening, form an embolism chamber, to admit an embolism with circulation flow path, this embolism can be rotated by the operation leader, to open and close fuel gas path; Wherein, this gas valve has and one surpasses the circulation flow path inside that the flow cut-off is installed in embolism, and it can seal fuel gas path automatically when gas flow surpasses limited flow rate, stop the supply of combustion gas.
This gas valve also has the inflow entrance inside that an overheated cut-off is installed in body, and it can seal fuel gas path automatically when temperature is higher than limiting temperature, stop the supply of combustion gas.
Description of drawings
Fig. 1 is existing gas valve axial section, and wherein arrow is represented the fuel gas flow path, respectively schemes identical below.
Fig. 2 is the axial section of gas valve described in the utility model, shows that super flow cut-off and overheated cut-off remain on the non-action status situation.
Fig. 3 is an axial section of the present utility model, shows super flow cut-off when action, its valve body sealing fuel gas path situation.
Fig. 4 is the thin portion exploded view of the super flow cut-off of the utility model.
Fig. 5 is the thin portion exploded view of the overheated cut-off of the utility model.
Fig. 6 is an axial section of the present utility model, shows overheated cut-off when action, its valve body sealing fuel gas path situation.
Symbol description
1 ... body 3 ... embolism
5 ... super flow cut-off 7 ... overheated cut-off
10 ... gas valve 11 ... inflow entrance
12 ... outflow opening 13 ... the screw section
14 ... screw section 15 ... the embolism chamber
16a ... valve seat 16b ... valve seat
17 ... groove 18 ... valve seat
31 ... circulation flow path 32 ... draw-in groove
33 ... handle 34 ... O shape ring
35 ... threaded cap 36 ... nut
37 ... drive link 50 ... circulation flow path
51 ... housing 52 ... trip
53 ... groove 54 ... O shape ring
55 ... trip 56 ... sleeve
57 ... tongue-and-groove 58 ... groove
59 ... O shape ring 60 ... valve seat
61 ... support 62 ... circulation flow path
63 ... valve body 64 ... bar portion
65 ... pressure spring 66 ... protuberance
71 ... bearing 72 ... shell
73 ... support 74 ... pilot hole
75 ... step part 76 ... cantilever
77 ... trip 78 ... rod member
79 ... bar head 80 ... the ball hole
81 ... ball 82 ... valve body
83 ... groove 84 ... bimetallic strip
85 ... patchhole 86 ... slide bar
87 ... pressure spring 90 ... gas valve
91 ... overheated cut-off 92 ... super flow cut-off
93 ... bimetallic strip 94 ... valve body
95 ... valve body 96 ... pressure spring
97 ... body 98 ... inflow entrance
99 ... embolism
Embodiment
In Fig. 2, show the thin portion of a gas valve 10, can be for explanation technology contents of the present utility model.This gas valve 10 comprises a body 1, and it has an inflow entrance 11 and an outflow opening 12, respectively is formed with for connecting the screw section 13 and 14 of combustion gas with metal tube in the inside of an inflow entrance 11 and an outflow 12.Between the inflow entrance 11 of body 1 and outflow opening 12, also form an embolism chamber 15, to admit an embolism 3 that is used for opening and closing fuel gas path.Ring- type valve seat 16a and 16b that inflow oral-lateral and outflow oral-lateral in embolism chamber 15 is equipped with molding synthetic resin again separately, the spherical embolism 3 with circulation flow path 31 is to be held between two valve seat 16a and the 16b to rotate freely.Embolism 3 can be spherical or shape that other are suitable shown in the drawings, and is for example cylindric.The embodiment of accompanying drawing is intended to illustration and explanation, and is not intended to be limited to any specific pattern.
Embolism 3 rotatable propping up freely in the embolism chamber 15 that is held in body 1, these embolism 3 inside have a circulation flow path 31, adorning a drive link 37 above, the last headgear of this drive link 37 handle 33, again with a nut 36 lock handles 33, embolism 3 nationalitys are shown rotatory handling 33 and are rotated, and reach the purpose that opens and closes fuel gas path.Say it, when the circulation flow path 31 of embolism 3 was communicated with inflow entrance 11 and outflow opening 12, combustion gas was passed through the circulation flow path 31 of embolism 3 to flowing out 12, is supplied to Gas appliance by fuel tube again.When rotatory handling 33 made embolism rotate 90 degree (shown in dotted line), its inflow entrance 11 and outflow opening 12 were blocked by embolism 3, thereby the sealing fuel gas path, stopped the supply of combustion gas.The outside snare one O shapes ring 34 of drive link 37, and have a threaded cap 35 to push down O shape ring 34 to make it tight, so can be really between the surface of contact of drive link 37 and body 1 appropriate airtight of formation, prevent gas leakage.
Gas valve 10 is characterised in that and one surpasses circulation flow path 31 inside that flow cut-off 5 is installed in embolism 3 that it can seal fuel gas path automatically when gas flow exceeds limited flow rate, stop the supply of combustion gas.Fig. 4 shows the thin portion of super flow cut-off 5, it comprises a housing 51 cylindraceous, this housing 51 has the plural trip 52 that is formed at circumferential part one end, can cooperate with the ring-type tongue-and-groove 32 of circulation flow path 31 inside that are located at embolism 3, makes housing 51 be fixed in the inside of circulation flow path 31.Circumferential part at housing 51 also has an annular ditch groove 53, and for O shape ring 54 is installed, formation is airtight reliably between the surface of contact of housing 51 and embolism 3 in view of the above, prevents gas leakage.Also there are some trips 55 inside of housing 51, and itself and tongue-and-groove 57 cooperations that are surrounded on sleeve 56 circumferential parts so can make the sleeve with circulation flow path 50 be fixed in the housing 51, to admit a support 61.On the circumferential part of sleeve 56, also have an annular ditch groove 58,, so can between the surface of contact of housing 51 and sleeve 56, form appropriate airtightly, prevent gas leakage for O shape ring 59 is installed.
This support 61 is installed in sleeve 56 inside, and it has circulation flow path 62, and can support bar portion 64 axle direction of valve body 63 to slide.One pressure spring 65 is arranged in the bar portion 64 of valve body 63, and the one end props up the tail end that is held in bar portion 64, and an end props up and is held in support 61, but so its elastic force of nationality makes in the valve body 63 frequent retraction supports 61.
When the Gas appliance normal operating condition, valve body 63 forward-and-rearward gaseous-pressure differences are less than the elastic force of spring 65.Therefore, super flow cut-off 5 keeps state of rest, and its valve body 63 still remains on out valve position, makes combustion gas pass through circulation flow path 62 on the support 61 to outflow opening 12, is supplied to Gas appliance by fuel tube again.
Taking place as combustion gas with the flexible pipe tip by abnormal conditions such as Gas appliance come off, when making valve body 63 forward-and-rearward gaseous-pressure differences, so valve body 63 is forced to advance greater than the elastic force of spring 65; When being formed at valve seat 60 driving fits in telescopic flow path 50 the place aheads, fuel gas path is to be closed (Fig. 3), and stops the supply of combustion gas at valve body 63.
When super flow cut-off 5 was had an effect, the protuberance 66 that is formed at valve body 63 the place ahead central authorities was to protrude in outside the sleeve 56.Afterwards, when artificial rotatory handling 33 made embolism 3 rotate 90 degree (shown in dotted line), embolism 3 became flexible because of protuberance 66 touches valve seat 16b, and opened valve position because of the automatic involution of the elastic force of spring 65, made the combustion gas circulation.
In preferred embodiment, fork is at the inflow entrance 11 inner overheated cut-ofves 7 of installing of gas valve 10.In Fig. 5, show the thin portion of overheated cut-off 7, it comprises a bearing 71, this bearing 71 is by the cylindrical case 72 of central authorities, reach a support 73 that is incorporated into this shell 72 and combustion gas is passed through and form, this shell 72 has a pilot hole 74, its inner ring-type step part 75 that forms; Support 73 is made up of the cantilever 76 of three each intervals, 120 degree, the free end thickness of each cantilever 76 thickens, and extend to form a trip 77 toward two limits, in the ring-type tongue-and-groove 17 that embeds inflow entrance 11 inside, so make bearing 71 be fixed in inflow entrance 11 inside of body 1.
The pilot hole 74 of this shell 72 allows a rod member 78 to insert and slides freely, the front end external diameter of this rod member 78 enlarges and forms a bar head 79, tail end has a ball hole 80 along footpath direction setting, and a ball 81 is installed respectively at two ends in ball hole 80, with the cooperation of nationality ball 81 with step part 75, the valve body 82 that is linked to bar head 79 is remained on out valve position, make the combustion gas circulation.Valve body 82 comprises a groove 83, its receivability bar head 79, and a bimetallic strip 84, and make bimetallic strip 84 between bar head 79 and valve body 82.Rod member 78 comprises an axial patchhole 85 again, and its receivability one slide bar 86 inserts, and a pressure spring 87 snares is arranged in slide bar 86 outsides, its two end props up respectively and is held in bearing 71 and bar head 79, and be confined state, to accumulate elastic energy, as the power source that promotes valve body 82 sealing fuel gas paths.
The unusual heat heating that is caused by fire or other factors at gas valve 10, when causing temperature and surpassing the reaction temperature of bimetallic strip 84, bimetallic strip 84 is towards valve body 82 bendings, slide bar 86 loses the effect of compeling heading pearl 81 because of bimetallic strip 84 back-flexings, make ball 81 because of loosening can't fixed beam 78, so spring 87 utilizes its elastic force to promote rod member 78, and valve body 82 is moved; Valve body 82 be formed at bulk flow when entering the mouth valve seat 18 driving fits in 11 the place aheads, fuel gas path is to be closed (Fig. 6), interdicts combustion gas automatically and releases, and avoids greater disaster.Fig. 6 shows overheated cut-off 7 when action, the thin portion of valve body 82 sealing fuel gas paths.
Because super flow cut-off 5 is installed in embolism 3 inside that open and close fuel gas path, does not therefore account for the space of gas valve 10, and can when rotating embolism 3, make its valve body 63 direct involutions open valve position.
Again, this super flow cut-off 5 can be installed in the inner use of a gas valve jointly with an overheated cut-off 7.
Claims (3)
1, a kind of gas valve, it comprises a body with inflow entrance and outflow opening, between inflow entrance and outflow opening, is formed with an embolism chamber, to admit an embolism with circulation flow path; It is characterized in that this gas valve has and one surpasses the circulation flow path inside that the flow cut-off is installed in embolism, this super flow cut-off comprises:
One sleeve, its airtight circulation flow path inside that is installed in embolism, and have a circulation flow path;
One support, it is installed in the circulation flow path inside of sleeve, and has the circulation flow path of the combustion gas of making circulation;
One valve body, it has one and is held in the bar portion that support axially slides, and a central protuberance that is formed at front end; And
One pressure spring, its snare are in the bar portion of valve body, and two ends prop up respectively and are held in bar portion tail end and support, make in the frequent retraction support of valve body with its elastic force of mat, keep the combustion gas circulation; In valve body forward-and-rearward gaseous-pressure difference during greater than the elastic force of spring, make before the valve body so that with the valve seat driving fit that is formed at telescopic flow path the place ahead, fuel gas path is sealed.
2. gas valve according to claim 1 is characterized in that, has a housing cylindraceous between described embolism and the sleeve, its airtight circulation flow path inside that is installed in embolism, the then airtight inside that is installed in housing of this sleeve.
3. gas valve according to claim 1 and 2 is characterized in that, also comprises an overheated cut-off, and this overheated cut-off has:
One bearing, the inflow entrance inside that it is installed in body has a cylindrical case, and a support that is incorporated into this shell and combustion gas is circulated, and this shell comprises an inner pilot hole that forms a ring-type step part;
One rod member, it has a pilot hole that inserts shell bar portion in axial sliding, and the tail end of this bar portion has a ball hole radially, and the front end external diameter enlarges and forms the bar head, and has an axial patchhole;
Two balls, it is installed in ball hole two ends of rod member respectively;
One pressure spring, its snare are in the outside of rod member, and two ends prop up support and the bar head that is held in bearing respectively;
One slide bar, its patchhole that inserts rod member endwisely slips;
One valve body, it has one in the face of the groove of rod member, admitting the bar head, and combines with the bar head; And
One bimetallic strip, it is installed in the groove of valve body, and when being failure to actuate, towards the bending of bar head direction, with the compressing slide bar ball is pushed up outward, ball is propped up be held on the step part of pilot hole, rod member is fixing with the shell of bearing, valve body is remained on make firmly putting of combustion gas circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118086 CN2765022Y (en) | 2004-10-28 | 2004-10-28 | Combustion gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118086 CN2765022Y (en) | 2004-10-28 | 2004-10-28 | Combustion gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765022Y true CN2765022Y (en) | 2006-03-15 |
Family
ID=36167941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118086 Expired - Fee Related CN2765022Y (en) | 2004-10-28 | 2004-10-28 | Combustion gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2765022Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212024A (en) * | 2019-07-10 | 2021-01-12 | 陈石明 | Device for closing the overheating inside the valve plug of a gas switching device |
-
2004
- 2004-10-28 CN CN 200420118086 patent/CN2765022Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212024A (en) * | 2019-07-10 | 2021-01-12 | 陈石明 | Device for closing the overheating inside the valve plug of a gas switching device |
| CN112212024B (en) * | 2019-07-10 | 2022-10-28 | 陈石明 | Device for closing the overheating inside the valve plug of a gas switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |