CN100360847C - Shockproof and fireproof emergency cut-off valve for gas - Google Patents
Shockproof and fireproof emergency cut-off valve for gas Download PDFInfo
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- CN100360847C CN100360847C CNB2006100237065A CN200610023706A CN100360847C CN 100360847 C CN100360847 C CN 100360847C CN B2006100237065 A CNB2006100237065 A CN B2006100237065A CN 200610023706 A CN200610023706 A CN 200610023706A CN 100360847 C CN100360847 C CN 100360847C
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- valve
- valve body
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- gas
- emergency cut
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Abstract
The present invention discloses a shockproof and fireproof emergency cut-off valve for gas, which comprises an upper valve body, a lower valve body, a valve cover, a temperature sensing device and a reset mechanism, wherein the reset mechanism which is composed of a reset operation rod and a nut is arranged at the bottom of the lower valve body, the top of the reset operation rod is provided with a groove, a valve rod and a valve rod limiting device are arranged in the valve body, the valve rod limiting device is provided with a limiting guide hole, the shaft line of which is along the vertical direction; a valve rod shaft penetrates and slides in the limiting guide hole, and the top of the valve rod shaft is fixed under the valve cover. A valve ball is movably clamped between the groove on the top of the reset operation rod and the bottom of the valve rod, and the temperature sensing device is positioned at one side of the valve ball to shift the valve ball. The present invention is not only provided with the temperature sensing device composed of nickel titan memory alloy, but also is provided with the valve ball used as a vibration sensing element, and thus, the present invention not only has the advantages of high response speed, reset for reuse and no requirements for energy source supply, but also has double functions of shock resistance and fire resistance. The present invention can be used for urban gas low and medium pressure pipelines or steel bottle liquid gas pipelines.
Description
Technical field:
The present invention relates to a kind of valve, particularly relate to a kind of gas emergency cut-off valve with antidetonation and fire prevention dual functions.
Background technique:
Along with society and rapid economy development, combustion gas all is greatly improved in the use popularity rate in town and country, and gas pipeline spreads all over the underground of cities and towns, and steel cylinder dress liquid gas also is used for a lot of families at large.
Earthquake is the natural disaster with very big collapsing force of burst type, ruinous earthquake will make the city paralysis of a normal operation in seconds, and the harm that gas accidents brings in the secondary disaster of earthquake the national wealth and the people's life safety is immeasurable.The slope of Japan shakes celestially, Muscovite Nie Fujiegeersike earthquake and the tsunami in the Indian Ocean etc. have all caused serious destruction to the city, and earthquake has caused secondary disasters such as the leakage of combustion gas and Secondary cases fire.
Combustion gas universal use in the family also can cause a series of safety problem, as leakage, fire or the like.The combustion gas of revealing runs into naked light and just may blast and cause fire, perhaps surrounding environment is because the other reasons breaking out of fire, if gas pipeline can not promptly block immediately, the combustion gas that the intensity of a fire will be ignited and be sprayed in the pipeline, and fire is spread along gas pipeline come, thereby cause bigger fire the condition of a disaster.Therefore, on the pipeline of the gas network in city, the fire safety valve is installed all generally, in case run into the surrounding environment breaking out of fire, the rapid rising of temperature can drive this fire safety valve and automatically gas pipeline be closed, ends combustion gas, thereby prevents expanding of fire.
Chinese patent " thermoinduction safety valve " (ZL02217608.X) discloses a kind of thermoinduction pushing mechanism be heated back action and thermoinduction safety valve of automatic-closing valve of utilizing, and it includes thermoinduction pushing mechanism and the resetting-mechanism that is made of bimetallic strip.Can promote valve ball after this thermoinduction pushing mechanism is heated when fire rapidly and stop up valve opening, thereby automatic-closing valve cuts off blast tube.After the condition of a disaster, resetting-mechanism can make valve recovery and restore funcitons to utilize once more.This thermoinduction safety valve has the advantage that speed of response is fast and can reset and utilize, yet it can only the back take place, just can work when surrounding atmosphere reaches uniform temperature at fire.And when earthquake takes place, in order to prevent gas leakage and secondary fire, just need be in the conveying of promptly cutting off combustion gas at the beginning of earthquake generation, still existing fire prevention safety valves for gas just can't be taken into account this situation and just work in first the stage of earthquake.Special shockproof safety valves for gas is also arranged at present, just can automatic-closing valve after the vibrations of perception earthquake, but it can't work under the situation of fire again.
Summary of the invention:
In order to overcome the shortcoming of existing safety valves for gas, take into account the needs of earthquake and two kinds of the condition of a disasters of fire, the invention provides a kind of Shockproof and fireproof emergency cut-off valve for gas, but it has that speed of response is fast, simple structure, can reset utilize again, equal advantage of automatic-closing valve when earthquake or any the condition of a disaster of fire take place.
The present invention solves the technological scheme that its technical problem takes:
A kind of Shockproof and fireproof emergency cut-off valve for gas, include upper valve body, following valve body, valve gap, temperature-sensitive executor and resetting-mechanism, this upper valve body has the inlet hole that joins with gas pipeline and air outlet hole and can be by combustion gas and the valve opening of being closed by valve gap, it is characterized in that: described resetting-mechanism is located at down the bottom of valve body, it is made of reset operation bar and nut, this nut is positioned at down the bottom of valve body, has outside thread on the reset operation bar, and screw in this nut, its top is provided with a groove; Be provided with valve rod and valve rod limit stoper in the described upper valve body, this valve rod limit stoper is fixed in the upper valve body inner chamber, which is provided with the spacing pilot hole of axis along vertical, this stem shaft is worn and is sleeved in this spacing pilot hole, and the below of valve gap is fixed on its top; One valve ball is folded between the bottom of the groove of reset operation masthead end and valve rod versatilely; Described temperature-sensitive executor is positioned at a side of valve ball, and it is made up of temperature-sensitive actuator, actuating strut and bearing, and this bearing is fixedly arranged on the upper valve body, and actuating strut one end is hinged on this bearing, and is subjected to the promotion of temperature-sensitive actuator and and then stirs valve ball.
The reset operation bar of Shockproof and fireproof emergency cut-off valve for gas of the present invention, spacing pilot hole and valve rod are positioned on the same axis, and the top of upper valve body is provided with in order to calibrate the levelling bubble of spacing pilot hole axis vertical; Be provided with seal ring on the aperture periphery of described valve opening and the valve gap periphery, also be provided with an insulating inner lining ring between the periphery of the aperture of seal ring and valve opening, the material of this insulating inner lining ring is a pottery, and the material of seal ring is a rubber; Described temperature-sensitive actuator can be made by Ultimum Ti, and described valve ball can be made by stainless steel.
Compare with existing safety valves for gas, the invention has the beneficial effects as follows, it both had been provided with the temperature-sensitive actuator of being made by Ultimum Ti, be provided with valve ball again as the vibrations perception cell, therefore when taking place the earthquake oscillatory acceleration above predetermined value, when perhaps the breaking out of fire ambient air temperature reached uniform temperature, the valve ball of described Shockproof and fireproof emergency cut-off valve for gas all can fall, thereby cause valve gap to close, cut off fuel gas path, prevent the generation of secondary the condition of a disaster; The present invention also is provided with resetting-mechanism, but hand reset behind the valve closing makes the valve restore funcitons so that utilize once more.Therefore the present invention have not only that speed of response is fast, simple structure, the advantage that can reset and utilize again, but also have not only antidetonation but also frpf dual functions.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that the present invention is acted on the view when closing by seismaesthesia.
Fig. 3 is that the present invention acts on the closing state schematic representation by being heated.
Fig. 4 is the schematic representation of recovery operation of the present invention.
Embodiment:
The invention will be further described below in conjunction with specific embodiments and the drawings.
At first see also Fig. 1 structural representation of the present invention.The diagram Shockproof and fireproof emergency cut-off valve for gas includes upper valve body 1, following valve body 2, valve gap 3, temperature-sensitive executor 4 and resetting-mechanism 5, this upper valve body 1 has inlet hole 12, air outlet hole 13 and valve opening 11, this inlet hole 12 and air outlet hole 13 can join with gas pipeline, combustion gas enters valve from inlet hole 12, flows out from air outlet hole 13 by valve opening 11 backs.The periphery in described valve opening 11 apertures is provided with the insulating inner lining ring 16 of porcelain and the seal ring 15 of rubber system, and this insulating inner lining ring 16 is folded between the aperture periphery of seal ring 15 and valve opening 11; Also be provided with a seal ring 15 on the bottom peripheral edge of valve gap 3, just in time corresponding with the seal ring 15 of valve opening 11 aperture peripheries; Combustion gas can be closed and cut off to valve opening 11 after valve gap 3 falls, two seal rings 15 make sealing effect better, and insulating inner lining ring 16 can avoid seal ring 15 to be damaged by high temperature in fire.
Described resetting-mechanism 5 is located at down the bottom of valve body 2, and the bottom of this time valve body 2 is recessed peviform, and its central bottom is a lowest part; Resetting-mechanism 5 is made of reset operation bar 51 and nut 52, these nut 52 axially locating are in the bottom of following valve body 2, has outside thread on the hypomere of reset operation bar 51, and screw in this nut 52, when turn nut 52, reset operation bar 51 can move up and down vertically, and the top of this reset operation bar 51 is provided with a groove.
Be provided with valve rod 6 and valve rod limit stoper 7 in the described upper valve body 1, this valve rod limit stoper 7 is fixed in upper valve body 1 inner chamber, and be provided with the spacing pilot hole 71 of axis above along vertical, valve rod 6 axially penetrates in this spacing pilot hole 71, and form with spacing pilot hole 71 and to be slidingly matched, its top and valve gap 3 are connected and are fixed in the below of valve gap 3, thereby the axial motion of valve rod 6 in spacing pilot hole 71 can drive valve gap 3 and rise or fall, to open or close valve opening 11; Above-mentioned reset operation bar 51, spacing pilot hole 71 and valve rod 6 are positioned at same axis, and on the promptly same vertical line, the top of upper valve body 1 is provided with in order to calibrate the levelling bubble 14 of spacing pilot hole 71 axis verticals; The valve ball 8 that one usefulness stainless steel is made is held in the groove on reset operation bar 51 tops versatilely, and valve rod 6 is shelved on the top of valve ball 8 again, and in other words, promptly valve ball 8 is folded between the bottom of the groove on reset operation bar 51 tops and valve rod 6 versatilely; Therefore, after valve ball 8 broke away from, valve rod 6 will drive valve gap 3 along vertical and fall.
Described temperature-sensitive executor 4 is located at a side of valve ball 8, and it is made up of temperature-sensitive actuator 41, actuating strut 42 and bearing 43; This bearing 43 is fixedly arranged on the upper valve body 1, and actuating strut 42 1 ends are hinged on the bearing 43 and can swing around this bearing 43; Temperature-sensitive actuator 41 is made by NiTi (Ni-Ti) memory alloy, when temperature raises, because the temperature characteristic of NiTi (Ni-Ti) memory alloy, this temperature-sensitive actuator 41 can distortion and is extended, thus pushing action bar 42 and and then stir valve ball 8 and from the groove on reset operation bar 51 tops, tumble.
The working procedure and the principle of Shockproof and fireproof emergency cut-off valve for gas of the present invention are as described below.
At first inlet hole 12 and the air outlet hole 13 with described Shockproof and fireproof emergency cut-off valve for gas inserts gas pipeline respectively, then with reference to the levelling bubble 14 on valve top with the valve level-off, make the axis of spacing pilot hole 71 be in vertical.The normal situation of opening of valve is seen shown in Figure 1: valve ball 8 is shelved in the groove on reset operation bar 51 tops, valve ball 8 withstands valve rod 6 and valve gap 3 simultaneously, make valve opening 11 be held open state, combustion gas can be passed through inlet hole 12, valve opening 11 and air outlet hole 13 in unobstructed ground successively.
When earthquake took place, valve ball 8 perceived the acceleration of crustal shock.After this accekeration reaches predefined value, valve ball 8 can drop to down in the bottom of valve body 2 recessed peviforms from the groove on reset operation bar 51 tops, at this moment the valve rod 6 that is always headed on by valve ball 8 just supports owing to the bottom has lost and glides along the spacing pilot hole in the valve rod limit stoper 7 71, the valve gap 3 that is connected with valve rod 6 simultaneously also falls thereupon, and the state of this moment can be referring to Fig. 2.After valve gap 3 falls valve opening 11 is closed, thereby, cut off blast tube automatically with valve closing.
Situation when Fig. 3 has represented breaking out of fire.When in a single day ambient temperature reaches the operating temperature of temperature-sensitive executor 4, then temperature-sensitive actuator 41 will anamorphic stretching and 42 swings of pushing action bar, actuating strut 42 and then stir valve ball 8 and tumble from reset operation bar 51 tops to the following bottom of valve body 2, valve rod 6 glides owing to having lost to support simultaneously, coupled valve gap 3 also falls thereupon and valve opening 11 is closed, thereby gas pipeline is interrupted.The present invention selects 85 ℃-90 ℃ operating temperature points of closing automatically as valve, so the phase transition temperature of NiTi (Ni-Ti) memory alloy is designed to 85 ℃-90 ℃.
After the condition of a disaster, described Shockproof and fireproof emergency cut-off valve for gas can reset to re-use by manual operations, and its reset mode as shown in Figure 4.Valve ball 8 drops on down the bottom of valve body 2 at this moment, by swivel nut 52 reset operation bar 51 is screwed out downwards, because the bottom of valve body 2 is recessed peviform down, so valve ball 8 just falls minimum central bottom, valve body 2 bottoms extremely down naturally after rise; At this moment oppositely turn nut 52 more gently, reset operation bar 51 promptly rise and will be on the valve ball 3 top, when valve ball 8 reached preposition and valve rod 6 jack-up made valve gap 3 open valve openings 11, resetting was successfully.
Shockproof and fireproof emergency cut-off valve for gas of the present invention can restore repeated use, greatly reduces its user cost; Has temperature response characteristics at a high speed owing to constitute NiTi (Ni-Ti) memory alloy of temperature-sensitive actuator 41, so described Shockproof and fireproof emergency cut-off valve for gas can move in second and interrupts blast tube at 2-3, speed of response is better than existing fire safety valve greatly; In addition in the present invention, valve ball 8 has the double action of seismaesthesia element and executive component concurrently, has therefore also simplified the structure of valve; Shockproof and fireproof emergency cut-off valve for gas of the present invention does not in addition need to consume any energy when work; And being it, biggest advantage of the present invention has dual functions: generation that can both the perception the condition of a disaster not only in earthquake disaster, and in the fire the condition of a disaster and automatic self-closing gas valve, thus avoid the further expansion of the condition of a disaster.
In sum, Shockproof and fireproof emergency cut-off valve for gas of the present invention not only has response speed Hurry up, simple structure, can reset re-uses, does not need energy supply and the cheap advantage of use cost, But also have antidetonation and fireproof dual-use function. It can be applicable in the hanging down of city gas supply network In the pressure pipe road, also can be used in the pipeline of common steel cylinder liquefied gas.
Claims (7)
1, a kind of Shockproof and fireproof emergency cut-off valve for gas, include upper valve body (1), following valve body (2), valve gap (3), temperature-sensitive executor (4) and resetting-mechanism (5), this upper valve body (1) has the inlet hole (12) that joins with gas pipeline and air outlet hole (13) and can be by combustion gas and the valve opening (11) of being closed by valve gap (3), it is characterized in that: described resetting-mechanism (5) is located at down the bottom of valve body (2), it is made of reset operation bar (51) and nut (52), this nut (52) is positioned at down the bottom of valve body (2), the reset operation bar has outside thread on (51), and screw in this nut (52), its top is provided with a groove; Be provided with valve rod (6) and valve rod limit stoper (7) in the described upper valve body (1), this valve rod limit stoper (7) is fixed in upper valve body (1) inner chamber, which is provided with the spacing pilot hole (71) of axis along vertical, this valve rod (6) axle is worn and is sleeved in this spacing pilot hole (71), and the below of valve gap (3) is fixed on its top; One valve ball (8) is folded between the bottom of the groove on reset operation bar (51) top and valve rod (6) versatilely; Described temperature-sensitive executor (4) is positioned at a side of valve ball (8), it is made up of temperature-sensitive actuator (41), actuating strut (42) and bearing (43), this bearing (43) is fixedly arranged on the upper valve body (1), actuating strut (42) one ends are hinged on this bearing (43), and are subjected to the promotion of temperature-sensitive actuator (41) and and then stir valve ball (8).
2, Shockproof and fireproof emergency cut-off valve for gas according to claim 1 is characterized in that: described reset operation bar (51), spacing pilot hole (71) and valve rod (6) are positioned on the same axis.
3, Shockproof and fireproof emergency cut-off valve for gas according to claim 1 and 2 is characterized in that: the top of described upper valve body (1) is provided with in order to calibrate the levelling bubble (14) of spacing pilot hole (71) axis vertical.
4, Shockproof and fireproof emergency cut-off valve for gas according to claim 1 and 2, it is characterized in that: be provided with seal ring (15) on the aperture periphery of described valve opening (11) and valve gap (3) periphery, between the aperture periphery of seal ring (15) and valve opening (11), also be provided with an insulating inner lining ring (16).
5, Shockproof and fireproof emergency cut-off valve for gas according to claim 4 is characterized in that: the material of described insulating inner lining ring (16) is a pottery, and the material of described seal ring (15) is a rubber.
6, Shockproof and fireproof emergency cut-off valve for gas according to claim 1 is characterized in that: described temperature-sensitive actuator (41) is made by Ultimum Ti.
7, Shockproof and fireproof emergency cut-off valve for gas according to claim 1 is characterized in that: described valve ball (8) is made by stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100237065A CN100360847C (en) | 2006-01-27 | 2006-01-27 | Shockproof and fireproof emergency cut-off valve for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100237065A CN100360847C (en) | 2006-01-27 | 2006-01-27 | Shockproof and fireproof emergency cut-off valve for gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1807948A CN1807948A (en) | 2006-07-26 |
| CN100360847C true CN100360847C (en) | 2008-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100237065A Expired - Fee Related CN100360847C (en) | 2006-01-27 | 2006-01-27 | Shockproof and fireproof emergency cut-off valve for gas |
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| Country | Link |
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| CN (1) | CN100360847C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591356B (en) * | 2013-11-28 | 2015-12-09 | 重庆理工大学 | The one-way valve of coal gas is closed in earthquake automatically |
| CN108190283B (en) * | 2018-01-13 | 2019-06-21 | 东北石油大学 | A kind of urgent balancing device of storage tank abnormal pressure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4278102A (en) * | 1979-03-19 | 1981-07-14 | Kelley Charles H | Disaster activated shut-off valve |
| US4715394A (en) * | 1986-09-19 | 1987-12-29 | Donnell Michael S O | Gas supply safety valve for earthquake protection |
| US4799505A (en) * | 1988-05-20 | 1989-01-24 | Homer Nowell | Earthquake triggered gas valve |
| JPH09210230A (en) * | 1996-02-06 | 1997-08-12 | O T Matsutoo:Kk | Earthquake resistant, automatic closing valve |
| CN2440992Y (en) * | 2000-09-06 | 2001-08-01 | 汤木生 | Automatic gravity controlled valve for earthquake and fire disaster |
| CN2451850Y (en) * | 2000-11-27 | 2001-10-03 | 林耀邦 | Automatic closing gas safety on-off when earthquake |
| CN2521461Y (en) * | 2001-09-10 | 2002-11-20 | 汤木生 | Indoor pipeline gas leakage and earthquake automatic controller |
-
2006
- 2006-01-27 CN CNB2006100237065A patent/CN100360847C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4278102A (en) * | 1979-03-19 | 1981-07-14 | Kelley Charles H | Disaster activated shut-off valve |
| US4715394A (en) * | 1986-09-19 | 1987-12-29 | Donnell Michael S O | Gas supply safety valve for earthquake protection |
| US4799505A (en) * | 1988-05-20 | 1989-01-24 | Homer Nowell | Earthquake triggered gas valve |
| JPH09210230A (en) * | 1996-02-06 | 1997-08-12 | O T Matsutoo:Kk | Earthquake resistant, automatic closing valve |
| CN2440992Y (en) * | 2000-09-06 | 2001-08-01 | 汤木生 | Automatic gravity controlled valve for earthquake and fire disaster |
| CN2451850Y (en) * | 2000-11-27 | 2001-10-03 | 林耀邦 | Automatic closing gas safety on-off when earthquake |
| CN2521461Y (en) * | 2001-09-10 | 2002-11-20 | 汤木生 | Indoor pipeline gas leakage and earthquake automatic controller |
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| Publication number | Publication date |
|---|---|
| CN1807948A (en) | 2006-07-26 |
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Granted publication date: 20080109 Termination date: 20120127 |