CN1232746C - Anti-explosion fuel gas safety device - Google Patents
Anti-explosion fuel gas safety device Download PDFInfo
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- CN1232746C CN1232746C CN 01127668 CN01127668A CN1232746C CN 1232746 C CN1232746 C CN 1232746C CN 01127668 CN01127668 CN 01127668 CN 01127668 A CN01127668 A CN 01127668A CN 1232746 C CN1232746 C CN 1232746C
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- safety device
- fuel gas
- magnetic force
- ball
- gas safety
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Abstract
The present invention relates to an anti-explosion fuel gas safety device. A spring and a pressure ball are arranged in a pressure ball cavity on the left of a U-shaped bending pipe; one end of a cylinder on the left is communicated with the outside, and is provided with an isolating protecting sheet; the other end is provided with an isolating piston; the right of the U-shaped bending pipe can be clogged by the extending end of the piston. The right of the U-shaped bending pipe is also provided with a magnetic ball; when the magnetic ball is normal, the magnetic ball is suspended in the middle of the ball cavity of magnetic force, and moves upwards and downwards. When a valve on the gas outlet end is damaged or is exploded, the U-shaped bending pipe is clogged by the device under the action of the extending end of the piston, the pressure ball and the magnetic ball without the generation of the further leakage, the firing and the chain explosion of combustible gas.
Description
Technical field
The present invention relates to safety installations, more particularly, relate to a kind of anti-explosion safety device that is used for delivery of fuel gas.
Background technique
Existing coal gas, hydrogen or other inflammable gas, general all processes pressure treatment becomes liquid stores later on, and in use, these liquid fuels are delivered to combustion site by gas pipeline, be converted into ignition behind the gaseous state, in course of conveying, will discharge great pressure.If these inflammable gass leak out, can produce and poison or danger such as blast, therefore need leakproof, explosion-proof safe transport pipeline.Device such as common gas cooker normally is connected with steam line by a gas valve, though multiple gas valve is arranged in the prior art, be in the utility model patent of ZL02236812.4 disclosed a kind of " in the safe gas valve " for example in the patent No., its advantage is regularly to finish or combustion gas automatic-closing valve when revealing, but, if its combustion site is blasted because of gas leakage or other reasons, the gas valve of outlet side may be blown up, if do not close the inlet-end manifold road this moment, to cause the further leakage of inflammable gas, on fire and chain explosion, but all be simply to be connected between fuel gas pipeline and the gas equipments such as gas cooker in the prior art, do not have special anti-explosion fuel gas safety device to play this type of effect by gas valve.
Summary of the invention
Technical problem to be solved by this invention is, above-mentioned shortcoming at prior art, a kind of gas safety device is provided, can blast in the outlet side or other reason when causing valve to damage, automatically close the inlet end pipeline, make the outlet side that the further leakage of inflammable gas, on fire and chain explosion can not take place.
Technical program of the present invention lies in, construct a kind of anti-explosion fuel gas safety device, comprise the connecting pipeline of suction port, air outlet and band bending, it is characterized in that, on the connecting pipeline between described suction port and the air outlet, be provided with pressure ball chamber and cylinder successively; Be provided with a pressure ball of pressing to inlet end by spring in the described pressure ball chamber; The centre of described cylinder is connected described pressure ball chamber and air outlet respectively; separable insulation blocking sheet be connected and be provided with to a wherein end at its two ends can with ambient air; separator piston be connected and be provided with to the other end can by the inlet end bend pipe of perforate on its end wall and described connecting pipeline, and described piston is provided with the external part that can be stretched out and be stopped up described inlet end bend pipe under it drives by described end wall perforate.
In according to anti-explosion fuel gas safety device provided by the invention, the surface friction drag between described piston and the described cylinder inner wall is less than the surface friction drag between described protecting sheet and the described cylinder inner wall.
In according to anti-explosion fuel gas safety device provided by the invention, on the connecting pipeline between described inlet end bend pipe and the described pressure ball chamber, also be provided with the Magnetic force ball chamber, the inwall middle part in described Magnetic force ball chamber is provided with the inwall magnetic rings, described Magnetic force ball also is provided with Magnetic force ball in the chamber, described Magnetic force ball middle part is provided with the spheroid magnetic rings corresponding with described inwall magnetic rings, and described Magnetic force ball can be suspended in the middle part in described Magnetic force ball chamber under the effect of described two magnetic rings.
In according to anti-explosion fuel gas safety device provided by the invention, the external part of described piston is cylindrical and the end is the hemisphere structure, the inwall of described inlet end bend pipe be provided with can with the close-fitting arc groove of described external part.
In according to anti-explosion fuel gas safety device provided by the invention, between described suction port and described inlet end bend pipe, also be provided with suction valve.
Implement anti-explosion fuel gas safety device provided by the invention, can blast in the outlet side or other reason when causing valve to damage, under the effect of the external part of described piston, described pressure ball and magnetic ball, the intermediate connection tube road is stopped up, make the outlet side that the further leakage of inflammable gas, on fire and chain explosion can not take place.
Description of drawings
Below in conjunction with drawings and Examples, further specify characteristics of the present invention, in the accompanying drawing;
Fig. 1 is the schematic representation when anti-explosion fuel gas safety device is in aeration status not in a preferred embodiment of the invention;
Fig. 2 is that anti-explosion fuel gas safety device shown in Figure 1 is in the schematic representation when ventilating normal working;
Schematic representation when Fig. 3 is the unexpected non-resistance in the outlet side of anti-explosion fuel gas safety device shown in Figure 1;
Fig. 4 is the schematic representation of the outlet side of anti-explosion fuel gas safety device shown in Figure 1 when blasting.
Embodiment
In a preferred embodiment of the present invention, the structure of anti-explosion fuel gas safety device is shown in Fig. 1,2,3 and 4, as can be seen from the figure, this device comprises the connecting pipeline of suction port 1, air outlet 2 and the bending of middle band " U " shape, and the left side of described " U " shape bend pipe is provided with pressure ball chamber 13 and cylinder 11 successively; In pressure ball chamber 13, be provided with a spring 8 and a pressure ball 5, the diameter of this pressure ball 5 designs less than the internal diameter in pressure ball chamber 13 and greater than the internal diameter of its underpart mouth of pipe, in the present embodiment, pressure ball 5 is made by steel, the elastic force of spring 8 can be with pressure ball 5 as far as possible toward pressing down to stop up the mouth of pipe of its underpart, when 2 places, air outlet blasted, the pressure that is produced also can be with pressure ball 5 as far as possible toward pressing down to stop up the mouth of pipe of its underpart; Cylinder 11 is the four-way structure; difference cut-in pressure ball chamber 13 and air outlet 2 in the middle of it; separable insulation blocking sheet 3 be connected and be provided with to left end in its two ends can with ambient air; in the present embodiment; insulation blocking sheet 3 is made of plastic; the right-hand member of cylinder 11 can be connected by the perforate on its end wall and the right of " U " shape bend pipe; also be provided with separator piston 4 at cylinder 11 right parts; be provided with external part 12 on piston 4, this external part 12 can be stretched out and be stopped up the right of " U " shape bend pipe by the end wall perforate of cylinder under the drive of piston 4.
Wherein, the external part 12 of piston 4 is designed to cylindrical and the end is the hemisphere structure, the inwall on corresponding " U " shape bend pipe the right be provided with can with these external part 12 close-fitting arc grooves 15.Surface friction drag between piston 4 and the cylinder inner wall should be designed to less than the surface friction drag between protecting sheet 3 and the cylinder inner wall.Like this, when the impact force in the cylinder 11 was enough big, piston 4 can move right earlier and stop up the right of " U " shape bend pipe; When the impact force that is subjected to when cylinder 11 further strengthened, protecting sheet 3 will be moved to the left under this bigger impact force, separates from cylinder at last, makes the left end of cylinder 11 unlimited fully.
As can be seen from the figure, the right at described " U " shape bend pipe also is provided with Magnetic force ball chamber 14, inwall middle part in Magnetic force ball chamber 14 is provided with inwall magnetic rings 9, the Magnetic force ball 7 of an oval ball shape is housed in Magnetic force ball chamber 14, the minor axis of this Magnetic force ball 7 (being lateral shaft) designs less than the internal diameter of cavity 14, and the minor axis of this Magnetic force ball 7 is greater than the upper and lower part mouth of pipe of cavity 14, and in the present embodiment, Magnetic force ball 7 can be made with plastics or rubber; Be provided with the spheroid magnetic rings 6 corresponding with inwall magnetic rings 9 at Magnetic force ball 7 middle parts, these two magnetic rings 6,9 can be inlayed with the permanent magnet of different pole and be formed, can produce the power that attracts each other between the two, the weight of Magnetic force ball 7 is designed to be less than this magnetic attracting force, so can be suspended in the middle part in Magnetic force ball chamber 14.As can be seen from the figure, also be provided with suction valve 10 at suction port 2 one ends.
Anti-explosion fuel gas safety device of the present invention be in when not ventilating state as shown in Figure 1; this moment, suction valve 10 cut out; protecting sheet 3 is in the normal position with piston 4; the external part 12 of piston 4 does not reach the right of " U " shape bend pipe; pressure ball 5 is pressed onto by spring 8 on the suction port of its underpart, Magnetic force ball 7 at the effect low suspension of magnetic rings 6,9 in central authorities.
State when anti-explosion fuel gas safety device of the present invention is in the ventilation proper functioning as shown in Figure 2, compared to Figure 1, this moment, suction valve 10 was open-minded, because of the elastic force design of the weight of pressure ball 5 and spring 8 suitably, gas pressure is greater than both sums, thereby pressure ball 5 is upwards pushed away, make gas flow to air outlet 2 through cylinder 11.Because of the outlet side is slow venting, the weight of Magnetic force ball 7 and gas pressure sum are designed to be less than the magnetic attracting force between two magnetic rings 6,9, so still be suspended in the middle part in Magnetic force ball chamber 14.
State during the outlet side of anti-explosion fuel gas safety device of the present invention unexpected non-resistance as shown in Figure 3; so-called outlet side does not have pressure suddenly; be meant the outlet side valve because of the external force effect is broken, protecting sheet 3 under situations such as cylinder 11 left ends drop out, the outlet side is in unresisted opening-wide state.This moment, the gas impulse force upwards pushed away pressure ball 5, because of the outlet side non-resistance, Magnetic force ball 7 can be pressed to the mouth of pipe of its underpart by the gas pressure of suction port 1 input, this mouth of pipe was clogged make gas can not flow to the left side of " U " shape bend pipe again.Just when the unexpected non-resistance in outlet side, can play the effect of blinding off a line.
State when blast in the air outlet of anti-explosion fuel gas safety device of the present invention as shown in Figure 4, in instant of detonation, air outlet 2 can produce the huge recoil force shown in the direction of arrow, with pressure ball 5 push away downwards, Magnetic force ball 7 upwards pushes away, the middle part of " U " shape bend pipe is blocked to be clogged, recoil force can not affact suction port 1, and gas can not flow to the left side of " U " shape bend pipe again.If impact force is enough big, because of being blocked, " U " shape bend pipe clogs, piston 4 in the cylinder 11 can move right under momentum effect, its external part 12 is stretched out by the end wall perforate of cylinder under the drive of piston 4 and cooperates with the right groove 15 of " U " shape bend pipe, guarantees that further gas can not flow to air outlet 2 again.If also have bigger impact force, whole device may break, and protecting sheet 3 can play the effect of breaking of preventing, because of it will come off from the left side of cylinder 11 under the effect of impact force, thereby impact force is thoroughly discharged.
As seen from the above-described embodiment, in anti-explosion fuel gas safety device of the present invention, " U " shape bend pipe and cylinder all should have enough shock resistances, explosion-proof intensity; Frictional force between piston 4 and the cylinder inner wall should be less than the frictional force between protecting sheet 3 and the cylinder inner wall; Frictional force between protecting sheet 3 and the cylinder inner wall also should be less than shock resistance, the explosion-proof intensity of bend pipe and cylinder.In addition, the weight of the elastic force of spring 8 and pressure ball 5, the magnetic force between the magnetic rings 6,9 and the weight of magnetic ball 7 all should be done special design according to the described cooperation gas pressure of the foregoing description.
Anti-explosion fuel gas safety device of the present invention can use with coordinative composition of equipments such as gas pressure reducer, pressure gauges.
Previously described is a preferred embodiment of the present invention, when specifically implementing, can also save wherein Magnetic force ball chamber 14, inwall magnetic rings 9, Magnetic force ball 7 and spheroid magnetic rings 6, and just the right side with " U " shape bend pipe is made as bypass structure.
Claims (6)
1, a kind of anti-explosion fuel gas safety device comprises the connecting pipeline that suction port, air outlet and band bend, and it is characterized in that, is provided with pressure ball chamber and cylinder on the connecting pipeline between described suction port and the air outlet successively; Be provided with a pressure ball of pressing to inlet end by spring in the described pressure ball chamber; The centre of described cylinder is connected described pressure ball chamber and air outlet respectively; separable insulation blocking sheet be connected and be provided with to a wherein end at its two ends can with ambient air; separator piston be connected and be provided with to the other end can by the inlet end bend pipe of perforate on its end wall and described connecting pipeline, and described piston is provided with the external part that can be stretched out and be stopped up described inlet end bend pipe under it drives by described end wall perforate.
According to the described anti-explosion fuel gas safety device of claim 1, it is characterized in that 2, the surface friction drag between described piston and the described cylinder inner wall is less than the surface friction drag between described protecting sheet and the described cylinder inner wall; Surface friction drag between described protecting sheet and the described cylinder inner wall is less than the anti-impact force of described pipeline and cylinder.
3, according to the described anti-explosion fuel gas safety device of claim 2, it is characterized in that, on the connecting pipeline between described inlet end bend pipe and the described pressure ball chamber, also be provided with the Magnetic force ball chamber, the inwall middle part in described Magnetic force ball chamber is provided with the inwall magnetic rings, described Magnetic force ball also is provided with Magnetic force ball in the chamber, and described Magnetic force ball middle part is provided with the spheroid magnetic rings corresponding with described inwall magnetic rings.
According to the described anti-explosion fuel gas safety device of claim 3, it is characterized in that 4, the attraction force between described inwall magnetic rings and the spheroid magnetic rings makes described Magnetic force ball can be suspended in the middle part in described Magnetic force ball chamber greater than the weight of described Magnetic force ball.
According to the described anti-explosion fuel gas safety device of claim 1, it is characterized in that 5, the external part of described piston is cylindrical and the end is the hemisphere structure, the inwall of corresponding described inlet end bend pipe be provided with can with the close-fitting arc groove of described external part.
6, according to each described anti-explosion fuel gas safety device among the claim 1-5, it is characterized in that, between described suction port and described inlet end bend pipe, also be provided with suction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01127668 CN1232746C (en) | 2001-07-25 | 2001-07-25 | Anti-explosion fuel gas safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01127668 CN1232746C (en) | 2001-07-25 | 2001-07-25 | Anti-explosion fuel gas safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1399088A CN1399088A (en) | 2003-02-26 |
| CN1232746C true CN1232746C (en) | 2005-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01127668 Expired - Fee Related CN1232746C (en) | 2001-07-25 | 2001-07-25 | Anti-explosion fuel gas safety device |
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| Country | Link |
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| CN (1) | CN1232746C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537438A (en) * | 2012-01-14 | 2012-07-04 | 刘立文 | Gas explosion-protection device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941295A (en) * | 2017-11-22 | 2018-04-20 | 重庆陆吾科技有限公司 | A kind of gas meter explosion-protection equipment simple in structure |
| CN112178255B (en) * | 2020-10-19 | 2022-04-26 | 北京天兵科技有限公司 | Explosion-proof device and assembling method thereof |
| CN112349536A (en) * | 2020-10-31 | 2021-02-09 | 贵州电网有限责任公司 | Gas blowing arc-extinguishing device of gas circuit breaker |
| CN113146114B (en) * | 2021-05-13 | 2023-01-24 | 中国石油天然气股份有限公司 | Welding single-filament head for maintaining without stopping conveying and pressing |
-
2001
- 2001-07-25 CN CN 01127668 patent/CN1232746C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537438A (en) * | 2012-01-14 | 2012-07-04 | 刘立文 | Gas explosion-protection device |
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| Publication number | Publication date |
|---|---|
| CN1399088A (en) | 2003-02-26 |
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