KR930003053B1 - Automatic closing controller for gas pipe - Google Patents

Abstract

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Description

Automatic closing controller of gas pipe

1 is a projection view of the present invention,

1a is a plan view thereof.

Sectional drawing cut | disconnected along the X-X ray | wire of FIG. 1B and FIG. 1C, The N part is sectional drawing of the excess flow automatic control apparatus.

1C is a bottom view of the main body of the present invention.

2 is an exploded view of the present invention.

3 is a partial cross-sectional view of the present invention showing a state in which an on-off valve closes a pipe outlet and a state in which an automatic pipe closing device closes a pipe inlet.

4 is a partial cross-sectional view of the present invention showing a state in which the on-off valve is open and the state in which the automatic pipe closing facility is opened.

5 is an exploded view of the lever stopper shaft of the automatic closing controller of the gas pipe of the present invention.

6 is a perspective view of a time control device of the automatic closing controller of the gas pipe of the present invention, showing a connection state between the time control device and the rolling element therein.

7 is a projection of the time control coverplate of the automatic closing controller of the gas pipe of the present invention.

8 is a time scale plate of the automatic closing controller of the gas pipe of the present invention.

* Explanation of symbols for main parts of the drawings

1A: Gas inlet 1A ₁ : Inlet nozzle

1B: gas outlet 1D: protrusion pillar

1D ₁ : rectangular concave 1D ₂ : screw hole

1E: Pressure reducing valve chamber 1H, 2: Time control device

1H ₂ : through hole 1H ₆ : support

1H ₇ : Screw hole 3: Cover plate

4: time scale plate 5: opening and closing rotary plate

6: automatic pipe closing device 7: open port stopper

8: on-off valve 9: pressure reducing part

10: leak prevention film piece 11: metal disc

12: spring 13: pressure reducing valve sealing cover

14: adjustment ring 15: base cover

20: excess flow automatic control device 30: pressure reducing valve device

Recently, liquefied gas fuel is commonly used in general households, and the apparatus using the fuel includes a high pressure gas container, an on-off valve, a pressure reducing controller, and a low pressure pipe to a combustion furnace.

Among them, the pressure reducing controller has a function of converting a high pressure gas having a pressure of about 6 Kg (60000 mmH ₂ O) into a set low pressure gas of about 400 mmH ₂ O, and releasing a high pressure gas at the time of effective pressure reduction. Doing.

As a cause of the decompression effect, it is often forgotten to close the on / off valve or the foreign matter is inserted into the rubber contact portion on the head end side of the gas inlet side of the decompression controller and the lever stopper shaft for decompression. By not being able to control the large and small flow rate of the gas inlet normally, the high pressure gas is not reduced to a predetermined low pressure, and the pressure in the decompression chamber is gradually increased to become a high pressure.

If you do not take proper measures and continue to use, the low pressure pipe is destroyed and eventually a disaster occurs. Commonly used pressure reducers have one reduced pressure automatic pressure safety design.

That is, when the pressure in the decompression chamber exceeds the set pressure because the pressure is not reduced, the safety valve is to immediately discharge the high pressure gas.

This design prevents the problem of high pressure gas destroying the low pressure pipe, but has the following drawbacks.

First, the decompression effect is not known.

Therefore, when used again, disasters are likely to occur due to the high pressure gas that is likely to burn.

Second, the commonly used pressure reducing controller is provided with a safety valve, so that the high-pressure gas inside it is safely discharged, but the user always keeps the container in the room for convenience of use, the discharged gas will fill the room, Eventually, it poses a danger to the human body or creates a high risk of fire or explosion.

This causes high pressure gas to destroy low pressure pipes and gas stoves designed for low pressure when not decompressed during use, and also causes a large disaster by leaking a large amount of gas.

Applicant of the present invention has developed a gas pipe automatic closing controller that closes the gas pipe when the gas is not decompressed in the end by studying in detail the various drawbacks of the commonly used controller in view of such a risk. to be.

The present invention has various functions such as an automatic closing control function of a gas pipe whose gas flow rate is exceeded, an automatic closing control function of a time-controlled gas pipe, and a function of automatically notifying the decompression effect.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic closing controller for a gas pipe that can detect a decompression failure, that is, not depressurization, and prevent a disaster caused by the decompression failure when the time-controlled automatic closing device is operated.

Still another object of the present invention is to provide an automatic closing controller for a gas pipe, which automatically closes the pipe according to gas decompression effect by having an on / off valve blocking a gas passage in a normal direction.

It is another object of the present invention to provide an automatic closing controller of a gas pipe that can automatically close the gas distribution passage when a kind of gas flows out of the flow rate.

Techniques and apparatuses used to achieve the above and other objects of the present invention will be described below with reference to specific examples and drawings.

The automatic closing controller of the gas pipe of the present invention is composed of main components such as one main body, one time control device, one set of pressure reducing valves, one set open / close valve, and one set of excess flow automatic control devices.

The main body consists of one cylindrical body and consists of one time control chamber, one pressure reducing valve chamber, and a thin wall between the time control chamber and the pressure reducing valve chamber.

The overflow automatic control device is arranged in the middle of the gas inlet pipe, and the time control device is installed inside the time control room.

The on-off valve is then operated by the rolling piece.

When the device is operated, the gas is depressurized by the pressure reducing valve and then flows into the gas outlet pipe through the on / off valve, which will be described in detail below.

With reference to FIG. 1, the gas inlet 1A and the gas outlet 1B are at the both outer side edges of the main body 1, respectively. There is one inlet nozzle 1A ₁ near the inner end of the gas inlet 1A of the main body 1. One thin wall 1K is formed integrally with the main body 1, and is installed sideways in the main body 1.

For this reason, the space in the main body 1 is divided into one pressure reduction valve chamber 1E and one time control apparatus chamber 1H.

It faces on the wall surface E of the thin wall 1K of the time control room 1H, and there is one protrusion part 1H ₁ near the gas outlet, and the gas outlet 1B at the front end of this protrusion part. And a through hole 1H ₂ communicating with each other, the central axis of the on-off valve 3 can be extended into the time control device chamber 1H via the through hole 1H ₂ .

In addition, three protrusions 1H ₅ are provided at approximately the same distance, and each of these protrusions 1H ₅ is fitted with three fixing screws of the time control device 2, thereby fitting them. Due to this, a suitable distance can be maintained between the time controller and the thin wall 1K.

On both sides of the front end of the inlet nozzle 1A ₁ facing the wall surface of the thin wall 1K of the pressure reducing valve chamber 1E, there are two projecting pillars 1D facing each other, which are higher than the inlet nozzles. On each of them, one rectangular concave portion 1D ₁ and one screw hole 1D ₂ are provided.

One projection 1E ₁ is provided at the position facing the gas inlet direction, and one through hole 1E through which the gas outlet 1B and the through hole 1H ₂ communicate with each other on the upper end surface of the projection 1E ₁ . ₂ ) is provided, which causes the gas to flow through the through hole 1H ₂ from the through hole 1E ₂ after being decompressed when the on-off valve is operated, and is discharged to the outlet 1B.

The on-off valve 8 will be described with reference to FIGS. 3 and 4.

The on-off valve 8 is disposed at the outlet 1B of the gas flow passage and is fixed in place by screwing the gas pipe 8G.

It is mainly composed of the central axis 8A, the leak-proof oil seals 8B, 8C and the coil spring 8D. The central axis 8A is in the form of a rod, on which there are protruding edges 8A ₁ , 8A ₂ , 8A ₃ , 8A ₄ and a recess 8A ₅ .

The outer diameter of the edge (8A ₁₎ protrudes which is smaller than the outside diameter of the protruding edge (8A ₂₎ In addition, the two grooves (8A ₆₎ in a ring shape between the projecting edge is formed. An oil seal 8B is disposed in the annular groove 8A ₆ .

This prevents the outflow of gas because the opening can be closed to the gas discharge pipe accurately when the on-off valve is closed. The outer diameters of the edges 8A ₃ and 8A ₄ of the protrusions are about the same and are smaller than the outer diameters of the edges 8A ₂ .

One annular groove 8A ₇ is formed between the protruding edge 8A ₃ and the protruding edge 8A ₄ . One oil seal 8C is provided in the annular groove to prevent gas from overflowing from the hole 1H ₂ .

Since the outer diameter of the protruding edge 8A ₃ and 8A ₄ is smaller than the diameter of the small end of the coil spring 8D, the end of the small diameter of the coil spring 8D passes through the protruding edge 8A ₄ . It can be pushed behind the edge 8A ₂ .

This causes the return force of the coil spring and the pushing force of the gas stream to move the center axis to the left when the rolling piece 2B does not press the center axis, thus closing the opening of the gas pipe 8G, and thereby To close the pipe in the normal direction.

Since the lower end of the central shaft is provided with one suitable recessed portion 8A ₅ to be combined with the rolling piece 2B of the control device 2, when the device is operated, the rolling piece 2B is the central shaft 8A. Move to the right.

At this time, since the front end of the center axis 8A also falls from the opening of the gas pipe 8G, gas flows into the gas pipe 8G from the opening 1B.

Since the present invention is designed to close in the normal direction, there is no fear of gas leaking to the outside when the pressure is not reduced even before or during use. Next, a description will be given with reference to FIG. The time controller 2 is provided with a rectangular spring 2A, and the end of the rectangular spring 2A is connected to one fixing screw of the time controller.

Due to the elastic pressure of the spring itself, the end portion of the rolling piece 2B can be kept pushing the rolling piece 2B against the central shaft 8A of the on-off valve.

Therefore, when the on-off valve 8 is kept open or the time control returns to "0", the end of the rolling piece 2B does not push the rolling piece 2B again, so the opening and closing is finally opened and closed. The valve 8 is closed. The rolling piece 2B is formed of an iron piece having a thickness of about 1 mm.

When the end portion is subjected to a pressure of about 0.5 Kg or more, it is bent and cannot operate with respect to the central axis 8A of the on-off valve 8.

Due to this, when the pressure in the pressure reducing valve room reaches more than 0.5Kg (about 10 times the normal normal pressure of 400mmH ₂ O) when the pressure is not reduced, the on / off valve is not opened and thus gas cannot be supplied. You will notice that the decompression has not been made.

7 shows a fixed cover plate 3 of the time control device, which is basically a circular plate, and on the circular plate there is one large, long, roughly arcuate cut ( 3C), and there are three small holes 3A in the circular plate, each of which is used to fit with three fixing screws in the time controller 2, and four round holes 3B close to the circumference. It is used to engage with four screw holes 1H ₇ on the four semicircular supports 1H ₆ on the interior wall of the time controller of the main body 1.

At the time of assembly, the time control device is first inserted into the top of the projection 1H ₅ , and the three small holes 3A of the time control fixing cover plate 3 have three fixing screws in the time control device 2. And the four round holes 3B of the time control cover plate 3 are screwed in line with the four holes 1H ₇ of the four semicircular supports 1H ₆ .

The assembling person at the time of assembling and after assembling can observe whether the assembly is corrected from the cut-out part 3 and whether the rolling piece of the time control device works correctly with respect to the central axis 8A of the on-off valve.

A description will be given with reference to FIGS. 2 and 5. The pressure reducing valve device 30 is composed of a pressure reducing component 9, a leakproof film piece 10, a metal disc 11, a spring 12, a sealing cover 13, an adjustment ring 14 and a base cover 15. It is.

That is, FIG. 5 shows the lever stopper shaft 9A and the pivot 9A ₅ of the pressure-sensitive component 9, the lever stopper shaft 9A is a curvature product of a hard metal, and the ends of the head are rectangular, In the center is the hollow head 9A ₁ , the gas inlet nozzle 1A ₁ and one of the thin pieces 9A _{3 made} of rubber are in contact with each other.

And the end (9A ₂₎ are in the forms of the small arc-shaped cross-section, it is convenient to put into the leak-barrier film pieces (1D).

In addition, one hollow hole 9A ₄ is provided in each of the hollow heads, and a pivot 9A is formed therebetween so as to be fixed by the head of the screw that is coupled with the hole 1D ₂ to form a rectangular concave. The pressure reducing valve portion 9 is fixed by fitting into the pivot in the portion 1D ₁ .

Since other components and the decompression operation principle are generally the same as those of a pressure controller generally used, repeated descriptions are omitted in the text.

Referring to FIG. 2, the time scale plate 4 is provided so that the time scale plate 4 is inserted into the upper end of the time control unit chamber of the main body 1 and protrudes from the center hole of the scale plate 4. Opening and closing rotary plate 5 is attached to the top of the central axis of the device.

When attaching the pressure reducing valve device, first insert the leakage preventing film piece 10 onto the lever 10, the end portion 9A ₂ of the stopper shaft, and then place the metal disc 11 into the leakage preventing film piece 10. It is attached to the lower end, the spring 12 is connected to the lower end of the metal disc to support the leak-proof film piece 10 by the metal disc 11 spring 12, the control ring 14 and the base cover 15 To the pressure-sensitive sealing cover 13, and finally, the sealing cover 13 is fixed with a screw.

The safety hole is not provided in the center part of this leak prevention film piece 10, but this structure differs from the leak prevention film piece normally used.

As a result, even when the pressure is not reduced, leakage of gas to the outside does not occur.

In order to perfect this design, the gas inlet hole 1A of this apparatus is again equipped with a set of automatic excess flow control devices.

A part "N" in FIG. 1 shows an excess flow automatic control device. Such a device is installed in the middle of the gas inlet distribution pipe on the right side of the main body.

This apparatus is arranged at the gas inlet 1A of the main body 1, and a set of automatic closing devices 6 and its pipe device 6 which automatically shut off the pipe when the pressure is not reduced or when the gas flows out of excess flow. Because it is arranged on the upper side of the), it includes a set of opening caps 7 to strike and drop the balls 6B and restore the pipe flow.

The automatic pipe closing device 6 is again installed at the gas inlet 1A of the main body 1, ie between the pipe 1A ₂ larger than the diameter of the ball 6B and the relatively small pipe 1A ₃ . One ball 6B which lies in front of one oil ring 6A and closes the opening of the oil ring and lies in front of the ball, the ball 6B rolling too far away from the oil ring 6A One spring 6C or other eccentric iron piece (not shown) is positioned to prevent it from going.

This allows the ball 6B to be held at a suitable position in the pipe 1A ₂ .

Therefore, when the pressure reducing valve device becomes ineffective or gas leaks excessively due to gas pipe rupture or rupture of the main body, a large pressure difference occurs before and after the oil ring 6A, and at this time, a relatively small pipe behind the oil ring ( The gas flow into 1A ₃ ) creates a very large suction force on the ball, which causes the ball to rise to a processing state and close the opening of the oil ring to achieve the effect of closing the pipe.

The opening plug 7 has a screw at the bottom, a base 7C attached to the top of the pipe 1A ₂ , a lower end larger than the outer diameter at the lower end, and a screw at the upper end thereof so that the push cap and There is one connecting center shaft 7E to be connected, and is installed above a relatively large lower end of the connecting center shaft 7E, and also frictionally blends with the connecting center shaft 7E to prevent the gas from leaking to the outside. It is installed between one oil ring (7D) and the press cap (7A) and the base (7C) to be used, so that when the pressure applied to the upper end of the press cap (7A) is removed, the press cap (7A) and the press cap One spring 7B, which is fitted with the connecting center shaft 7E, which can be returned to its original position together, is arranged above the base 7C, and is also engaged with the upper part of the connecting center shaft 7E. 7A of push caps, etc. are included.

Due to this, when the ball 6B closes the opening of the oil ring and pressurizes the top surface of the pressing cap 7A, the connection center shaft 7E is operated to drop the ball 6B onto the pipe 1A ₂ . In addition, it can recover the distribution of pipes.

In addition, the connecting central axis is returned to its original position so as not to affect the gas distribution.

As described above, the present invention can close the gas distribution pipe in a time-controlled manner, and can notify the decompression effective state by the rolling element, and also automatically close the pipe even when the gas is excessively leaked to generate a disaster. It is an ideal invention with the effect of preventing.

Claims (4)

An automatic closing controller of a gas pipe that automatically closes the gas pipe when it becomes a kind of gas decompression effective state, comprising: a main body; The cylindrical chain body has one time control device chamber 1H and one pressure reducing valve chamber 1E, which are partitioned by one thin wall 1K, and gas inlets are provided at both outer ends of the body. There is a 1A and a gas outlet 1B, and one inlet nozzle 1A ₁ is provided near the inner end of the gas inlet 1A, and this inlet nozzle 1A ₁ is a time control room 1H. It is formed integrally with the main body on the wall facing the thin wall (1K) of the, there are four semi-circular support (1H ₆ ) whose height is slightly lower than the top surface of the time control room (1H), the top surface of the support A screw hole 1H ₇ is used for fitting with the time controller cover plate, and one projection 1H ₁ is provided on the wall near the outlet hole 1B, and a gas outlet 1B is provided at the front end of the projection part 1B. ) and has a single through hole (1H ₂₎ for communicating with each other, and The same gap distance above the surface and the top end portion, and is provided with three protrusions (1H ₆₎ with a recess, in addition, the inlet nozzle (1A ₁₎ on the wall surface of the thin wall (1K) that faces the pressure reducing valve chamber (1E) On both sides of the front side, there is an opposite projecting column (1D), the height of the two projecting pillars are higher than the inlet nozzle (1A ₁ ), there is a rectangular recess (1D ₁ ) and a screw hole (1D ₂ ) on each are provided, in the direction opposed to the gas inlet and the one projection (1E _1), the projection (1E ₁₎ has a through hole (1E ₂₎ is passing through each gas outlet (1B) and through holes (1H ₂₎ the And; A time control device 2 having a rolling piece for operating a set of on / off valves 8; A time scale plate 4 installed on the top of one fixed cover plate; An opening and closing rotary plate 5 installed at one top of the main body; An on / off valve (8), a set of pressure reducing parts (9), a leak-proof film piece (10), and a metal disc (11), which are provided near the outlet hole (1B) inside the single pressure reducing valve and used to control gas flow. , A pressure reducing valve device 30 assembled with a spring 12, a pressure reducing valve sealing cover 13, an adjustment ring 14 and a base cover 15, and a gas distribution pipe on the right side of a set of main bodies. An excess flow automatic control device (20) including an automatic pipe closing device (6) and an opening plug (7) disposed on a set of automatic pipe closing devices; When the pressure is not reduced, when the pressure in the pressure reducing valve chamber exceeds the set pressure, the rolling piece 2B is not operated with respect to the on / off valve 8, thereby informing the user of the pressure reduction effect, and the gas is discharged to the excess flow rate. When the excess flow automatic control device 20 automatically closes the pipe immediately, the automatic closing controller of the gas pipe, characterized in that to achieve a disaster prevention effect. The on-off valve (8) according to claim 1, wherein the on-off valve (8) is arranged at the outlet (1B) of the gas flow passage, and the on-off valve (8) is fixed in place by screwing the gas pipe (8G). Is composed of a central axis (8A), a leak-proof oil ring (8B), (8C), a spring (8D), the central axis (8A) is in the form of a circular rod and a protruding edge (8A ₁ ) thereon _{(8A 2) (8A 3)} (8A 4) and the recess (8A ₅₎ for this is provided, the outer diameter of the protruding edge (8A ₁₎ is smaller than the outside diameter of the protruding edge (8A _2), also, One annular groove 8A ₆ is formed between these two protruding edges, and one oil seal 8B is disposed in the annular groove 8A ₆ , and this oil seal 8B is provided. ) Is configured to prevent the outflow of gas by closing the opening of the exhaust pipe accurately when the on-off valve is closed, Submitted edge (8A ₃₎ the outer diameter of the edge (8A ₄₎ protrude and are the same and also is smaller than the edge of the outer diameter of (8A ₂₎ projecting at the same time, the edges (8A projected as the projecting edge (8A _{3) 4} ) an annular groove 8A ₇ is formed between the oil grooves in which the gas does not overflow into the edge 8A ₃ protruding from the hole 1H _{2 in the} annular groove 8A ₇ . 8C is provided, and the outer diameters of the protruding edges 8A ₃ and 8A ₄ are smaller than the inner diameter of the small diameter end of the coil spring 8D, whereby the small diameter end of the coil spring It is designed to be pushed through the protruding edges 8A ₃ and 8A ₄ to the rear of the protruding edges 8A ₂ , so that when the rolling piece 2B does not press the central axis, Return force of 8D) and pushing force of gas stream By moving it to the left, the opening of the gas pipe 8G is closed and the pipe is closed in the normal direction, and at the central axis end, a suitable one to be combined with the rolling piece 2B of the time control device 2 is provided. The recessed part 8A ₅ is provided, so that, when the device is operated, the rolling piece 2B moves the central axis 8A to the right, and the front end of the central axis 8A is also defined by the gas pipe 8G. A gas pipe automatic closing controller, characterized in that the gas is flowed from the opening (1B) into the gas pipe (8G) by being separated from the opening. 2. A pipe according to claim 1, having a built-in automatic pipe closing device, which is located at the gas inlets (1, A) of the body (1) and which is larger than the diameter of the balls (6B) (1A ₂ ) and relatively small pipes. One oil ring 6A provided in (1A ₃ ), one ball 6B provided in front of the oil ring 6A, and closing the opening of the oil ring, and provided in front of the ball. By including one spring 6C, or an eccentric iron piece, which is positioned so that it does not roll away from this oil ring, the ball is held in the proper position of the pipe 1A ₂ so that the pressure reducing valve device becomes ineffective or gas The gas pipe automatic closing controller, characterized in that configured to be able to achieve the effect of the automatic pipe closing by closing the opening of the oil ring when excessively spilled. 2. An open plug according to claim 1, wherein an open plug is built in, and the open plug has a screw at the bottom, one base (7C) attached to the upper part of the pipe (1A ₂ ) and a lower outer diameter at the lower end, the upper end. There is a screw, which is in contact with the connection center shaft 7E, which can be engaged with the press cap, the upper part of the relatively large bottom of the connection center shaft 7E, and the connection center shaft thereof, thereby preventing the gas from leaking outside. It is installed between one oil ring (7D) and the press cap (7A) and the base (7C), which is used to connect the center of the press cap when the pressure is removed from the top surface of the press cap (7A). At the same time, one spring 7B, base 7C, which can return to its original position, is also composed of one push cap 7A that engages with the upper portion of the connection center shaft 7E, whereby the ball is When closing the opening of the oil ring 7E, When pressure is applied to the top surface of the rim cap, the connection center axis can be operated to strike the ball 6B and drop it, so that the pipe can return the flow of gas to the automatic closing controller of the gas pipe. .

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