KR100366312B1 - An automatic switching valve of the gas - Google Patents

Abstract

In case of a fire breakdown and a gas leakage accident, the gas shut-off system shuts down electricity by the disaster prevention system, and the normally closed solenoid valve automatically closes the solenoid valve to close the main flow path and stop the gas supply accordingly. And the manual opening and closing knobs open the bypass channel so that gas can be supplied.

In the automobile short circuit, the solenoid valve forms a plunger on the boss, forms a valve and a guide rod, and is fastened to an elastic shaft plate outside the valve body at the end of the guide rod, and fixed with a fastening plate by coupling a pressure cap from the outside. .

Such a configuration is composed of each configuration, when the failure occurs, the other blocking means can not block secondary, and also has a number of disadvantages, such as the difficulty of manufacturing by a complicated configuration.

The present invention has been drawn to improve the above problems, and in particular, the automatic opening and closing operation of the gas automatic on-off valve to open and close the valve automatically by the sensor, the pressure difference signal and the manual and solenoid to ensure that the opening and closing operation is made accurately and quickly. It is about.

Description

An automatic switching valve of the gas

The present invention is a gas safety car short circuit that is attached to a gas supply line such as LPG or LPG, in particular, to open and close the operation accurately and quickly, and the sensor, pressure difference signal and manual and It relates to a gas automatic on-off valve to open and close the valve automatically by the solenoid.

As is well known, liquefied petroleum gas (LPG) or liquefied natural gas (LNG), which is a clean fuel, is frequently used due to exhaustion of solid fuel and prevention of environmental pollution.

Natural gas is not only a clean fuel, but also has emerged as a future fuel with many preferences due to its characteristics that can reduce environmental pollution, and also has the convenience of supplying by pipeline in supply.

However, such natural gas is colorless and odorless, and if there is a leak or leak in the supply line, the leak cannot be confirmed, and therefore, there is a risk of an accident that causes enormous damage and personal injury.

Accordingly, the gas supply line is installed with an automatic gas circuit breaker to cut off the supply gas according to the abnormality of the line to prevent the accident by installing a gas vehicle circuit breaker to prevent the explosion accident by leaking gas.

The gas vehicle breaker is connected to be operated by an electric operation signal or a manual operation output from a controller of a disaster prevention system including a gas leak detector or a fire detector, a means for detecting various dangerous states, and an alarm means.

However, in case of gas leakage, the power supplied to the DC motor from the electronic controller has already been determined and the current required to increase after elapse of time cannot be obtained, so the gas shutoff function cannot be expected and an emergency cut-off speed is required. There is a problem that the time from the state to the complete block is delayed.

Such a conventional embodiment can be seen in the effect of the first patent registration No. 166417 and the first application utility model No. 12641 of 1998.

When the gas shut-off is cut off by the disaster prevention system in case of a fire and a gas leakage accident, the normally closed solenoid valve automatically closes the solenoid valve to close the main flow path and thus stop the gas supply.

And the manual opening and closing knobs open the bypass channel so that gas can be supplied.

In the automobile short circuit, the solenoid valve forms a plunger on the boss, forms a valve and a guide rod, and is fastened to an elastic shaft plate outside the valve body at the end of the guide rod, and fixed with a fastening plate by coupling a pressure cap from the outside. .

Such a configuration is composed of each configuration, when the failure occurs, the other blocking means can not block secondary, and also has a number of disadvantages, such as the difficulty of manufacturing by a complicated configuration.

The present invention has been made to improve the above problems, in particular, the automatic gas supply line opening and closing function having a safety automatic locking function when not locking the intermediate valve after using the gas by automating the function of the intermediate valve to be closed before and after gas use and,

Overflow blocking function to automatically cut off the flow of gas when sudden gas leakage occurs due to bursting of gas hose,

Blocking by a toggle mechanism of a solenoid actuator driving mechanism to prevent time difference caused by rotating the ball valve by 90 degrees with a DC motor with a deceleration device when it is blocked by an electrical signal by a gas sensor during gas leakage. It is an object of the present invention to provide a valve that is provided together or separately with a gas automatic shut-off valve that can be configured to function more securely, precisely and quickly.

1 is an exploded perspective view showing main parts of a first embodiment of the present invention.

Figure 2 (A) is a cap bottom view of the main servo valve of the present invention.

(B) is a sectional side view of the cap of the main servo valve of the present invention.

Figure 3 (A) is a cross-sectional view of Figure 1 showing the gas use state of the first embodiment of the present invention.

(B) is a cross-sectional view of Figure 1 showing a state without using the gas of the first embodiment of the present invention.

Figure 4 is a side sectional view showing a main portion of the valve configuration by the solenoid of the second embodiment of the present invention.

5 is a perspective view showing the main structure of the toggle mechanism for blocking the valve by the electric signal of the third embodiment of the present invention.

Fig. 6A is a sectional view showing an operating state of the third embodiment.

(B) is sectional drawing which showed the operating state of the closed state of (A).

7 is a sectional view showing a simple manual valve of the present invention.

Explanation of symbols for the main parts of the drawings

1: inlet pipe 2: outlet pipe 3: orifice

4: on-off valve 5: spring 6: operating rod

7: knob 10: valve body 11: corrugated pipe

12: diaphragm 13: pressure chamber 14: upper cap

15: interlocking rod 16, 16-1: euro ball 20: servo valve

21: overflow cap 22: interlocking rod 23: adjusting bolt

24: Pressure regulating spring 25: Euro groove 26: Valve rod

27: cover 28: servo body 29: upper and lower

29-1: Starting and Exiting 30: Euro Pavilion 31: Servo Diaphragm

40: stationary body 41: solenoid 42: interlocking arm

43: seal 50: micro switch 51: overflow detection diaphragm

52: touch rod 53: on / off switch rod 54: overflow spring

Referring to the configuration in more detail by the accompanying drawings of the present invention for achieving the above object as follows.

1 is an exploded perspective view of a main part showing a first embodiment of the present invention, Figure 2 (A) is a cap bottom view of the main servo valve of the present invention (B) is a cap side of the main servo valve of the present invention 3A is a cross sectional view of FIG. 1 showing a gas use state of the first embodiment of the present invention, and (B) is a cross sectional view of FIG. 1 showing a state of not using gas of the first embodiment of the present invention. It is shown.

As shown in the drawing, the opening and closing valves 4 which are lifted up and down by forming the "A" chamber of the inlet pipe 1 and the "B" chamber of the outlet pipe 2 and the orifice 3 as shown in FIG. In a conventional gas automatic valve opening and closing device configured to be operated by an operating rod (6) and a knob (7) or a solenoid,

Opening the upper valve body (10) of the orifice (3) to form an expansion diaphragm (Diaphragm) (12) integrally formed of the corrugated pipe (11), the upper cap (14) constituting the "C" chamber of the inner pressure chamber (13) In addition, the lower end of the diaphragm (12) to form an interlocking rod (15) fixing the opening and closing valve (4) to open and close the orifice (3)

The operating rod 6 is fixed to the diaphragm 12 to expose the upper cap 14 to the upper portion so that the operating rod 6 is interlocked by the manual knob 7 and the solenoid 41 to open / close the valve 4. In conjunction with the orifice (3) to open and close,

On the bottom surface of the “B” chamber of the valve body 10, a flow path hole 16 is formed to constitute a “D” seal and an “E” seal to separate the servo valve 20. The valve rod 26 connected to the interlocking rod 22 and elastically installed with the adjusting bolt 23 and the pressure regulating spring 24 and forming the flow path groove 25 on the outer circumferential surface thereof is fastened with the cover 27. The servo body 28 of the cover 27 drills up and down holes 29 and 29-1 so that the lower and outlet holes 29-1 are the "C" chamber and the valve body 10, which are the inner pressure chambers 13, respectively. ) And the flow path tube 30 formed by the servo body 28 connect the pressure chamber "C" chamber and the valve outlet tube 2 "B" chamber, and the up-and-out hole 29 is a valve inlet tube (1). From the "A" chamber of the pressure chamber to the "C" chamber.

Fig. 5 is a side sectional view showing a main portion showing a toggle mechanism for blocking a valve by the solenoid of the second embodiment of the present invention.

In the second embodiment, as shown in the drawing, the operating rod 6 fixed to the upper end of the orifice 3 is fixed and exposed to the upper cap 14, with the closing by the manual knob 7.

The end of the interlocking arm 42 hinged to the upper cap 14 by fixing the " 자 " shaped fixture 40 pushes the operating rod 6 from the lower end of the manual knob 7 and the interlocking arm 42 The other side is connected to the seal 43 of the solenoid 41 fixed to the fixed body 40 so that the seal 43 of the solenoid moves the linkage arm 42 to lower the operation rod 6 on the other side. A solenoid and a toggle mechanism for opening and closing the valve are configured.

5 is a main perspective view showing the valve configuration by the electric signal of the third embodiment of the present invention and Figure 6 (A) is a cross-sectional view showing an operating state of the third embodiment. (B) shows sectional drawing which showed the operating state of the closed state of said (A).

As shown in this figure, the servo valve 20 and the upper cap 14 of the valve body 10 are configured, but the flow path 16-1 is formed in the “B” chamber of the valve body 10 to detect the overflow. The diaphragm 51 and the touch rod 52 fixed thereto are elastically installed with the overflow spring 54, and the on / off switch rod 53 of the micro switch 50 is configured outside the interlocking operation of the touch rod 52. Will be.

7 is a cross-sectional view showing a valve of a simple manual function of the present invention by opening the upper valve body 10 of the orifice (3) to constitute a telescopic diaphragm (12) integrally constituted by a corrugated pipe (11) The upper cap 14 is fixed, and the lower end of the diaphragm 12 forms an interlocking rod 15 which fixes the on / off valve 4 to open and close the orifice 3.

The diaphragm 12 was fixed to the operating rod 6 to expose the upper cap 14 to the upper portion was configured to open and close by the manual knob (7).

Reference numeral 21 shows the overflow cap as a sealed nut.

If described in more detail by the accompanying drawings the effect of the present invention configured as follows.

1 is an exploded perspective view of a main part showing a first embodiment of the present invention, Figure 2 (A) is a cap bottom view of the main servo valve of the present invention (B) is a cap side of the main servo valve of the present invention 3A is a cross sectional view of FIG. 1 showing a gas use state of the first embodiment of the present invention, and (B) is a cross sectional view of FIG. 1 showing a state of not using gas of the first embodiment of the present invention. As illustrated, when the gas supplied to the "A" chamber of the inlet pipe 1 flows in, the on-off valve 4 blocking the orifice 3 of the valve from the "A" chamber is returned to the return overflow spring 54. Since the gas is open (NO), the gas supplied is passed through the orifice (3) and supplied to the gas using device through the "B" chamber, and the gas is supplied to the on / off valves of gas appliances such as a gas range not shown. Phase available by opening and closing the valve by use of It is able to.

At this time, when the on-off valve of a gas appliance such as a gas range is opened, that is, when the user uses the apparatus, the pressure in the "B" chamber of the gas outlet pipe 2 is reduced to the valve inlet as shown in FIG. Inlet pipe (1) The pressure is lower than the "A" seal, the valve rod 26 and the interlocking rod 22 of the servo valve 20 by the pressure regulating spring 24 of the servo valve. This flows up and blocks the flow path opening and closing hole 29-1, thereby blocking the flow path of the "A" thread leading to the "C" thread.

Accordingly, as shown in FIG. 3B, the upper and lower flow path grooves 25 formed on the outer circumferential surface of the valve rod 26 of the servo valve 20 are moved to allow entry and exit holes 29-1 of the lower portion of the servo body 28. ) And through the inlet and outlet 29 of the upper part is switched to the open state, the pressure gas of the "C" chamber passes through the flow pipe 30 of the valve body 10 through the flow path groove 25 "B" The gas flows to the "C", thereby lowering the gas pressure in the "C" chamber, thereby preventing the closing of the shut-off valve 4 and having a pressure less than the spring 5 elasticity, thereby supplying gas to the opening and closing of the shut-off valve 4. It becomes available.

At this time, the differential pressure generated in the valve inlet "A" chamber and the outlet "B" chamber is controlled by the servo adjustment bolt 23 to form the opening and closing maintenance by adjusting the pressure regulating spring 24 of the servo valve.

With such use, when the on-off valve of a gas appliance such as a gas range is closed, the pressure of the "B" chamber at the gas outlet side of the valve is equal to the pressure of the "A" chamber at the valve inlet side, so that the pressure of the servo diaphragm 31 is reduced. The gas pressure applied to the "D" seal is greater than the servovalve pressure regulating spring 24 and the pressure is lowered to lower the valve rod 26 fixed to the interlocking rod 22 and the fixed rod 22 together with the servobore 31. do.

Accordingly, as shown in FIG. 3A, the lowered valve rod 26 moves downwardly in FIG. 3B to move the upper and lower flow path grooves 25 to move the upper flow path groove 25 and the upper portion. As the entrance and exit holes 29 are blocked, the lower entrance and exit holes 29-1 are converted into matching openings.

That is, the valve rod 26 that is moved above is subjected to a pressure greater than the pressure regulating spring 24, the servo valve is lifted up, the servo valve diaphragm 31 is lowered.

Accordingly, the “A” seal pressure of the valve supply inlet pipe 1 passes through the flow pipe 30 through the flow path of the servo valve 20, and then again the lower inlet / out holes 29-1 of the valve rod 26 and Via the lower flow path groove 25, the flow pipe 30 of the valve body 10 passes through the "C" chamber of the diaphragm 12 in the upper cap 14, and presses the spring 5 at that pressure to open and close the valve. (4) is in close contact with the orifice (3) to block the movement to the "B" thread.

As described above, the present invention utilizes a pressure difference for opening and closing the valve by using a servo mechanism having a diaphragm and a servo valve interlocked according to the pressure of the gas flowing in the valve.

4 is a side cross-sectional view showing a main part showing a valve configuration by a solenoid according to a second embodiment of the present invention. As shown in FIG. 4, the solenoid 41 receives an electrical signal of a fire or gas leakage signal from an internal or external gas leakage detector. By interlocking with the solenoid 41 operates as shown in the drawing to raise the seal 43 to move the end of the linkage arm 42 located in the front end thereof.

Since the interlocking arm 42 is shaft-installed on the fixed body 40 in the form of a seesaw, the other side is lowered and at this time, the operating rod 6 is pushed back by pushing the operating rod 6 exposed to the lowered position. As shown in (A) of 3, the center portion of the diaphragm 12 is lowered to lower the integrally fixed on / off valve 4 to close the orifice 3.

In addition, when the user presses the knob 7 of the manual operation together with the solenoid 41 operation by the electric signal as described above, the on / off valve 4 is interlocked with the knob 7, the operating rod 6, and the diaphragm 12. By lowering the orifice (3) can be closed.

As described above, the present invention enables automatic opening and closing with automatic by an electrical signal.

5 is a perspective view showing a main portion of the valve configuration by the electric signal of the third embodiment of the present invention and Figure 6 (A) is a cross-sectional view showing an operating state of the third embodiment. (B) comprises the servo valve 20 and the upper cap 14 in the valve body 10 as shown in the cross-sectional view showing the operating state of the closed state of (A), the valve body 10 of the The flow path hole 16-1 is formed in the “B” thread to elastically install the overflow sensing diaphragm 51 and the touch rod 52 fixed thereto with the overflow spring 54, and then move outwardly from the interlocking side of the touch rod 52. By configuring the on / off switch rod 53 of the micro-switch 50, the overflow detection diaphragm provided on the side of the “B” chamber of the gas outlet pipe 2 of the valve body 10 as shown in FIG. Due to the gas pressure of the "B" chamber which flows into the flow path 16-1 connected to the 51, the overflow detecting diaphragm 51 of the micro-switch 50 has a larger force than the overflow spring 54 to be always returned. Press the switch rod 53 to bring the contact of the micro switch 50 into the normally open state. Maintaining the electrical open-circuit state (開路) to the solenoid to thereby operate the toggle mechanism composed of a deployed operating rod (6) and maintains the valve open state.

In addition, if the pressure in the "B" chamber of the gas outlet pipe 2 of the valve becomes low due to sudden gas leakage due to gas hose breakage, abnormality in the pipeline and gas equipment, the gas caught by the overflow detection diaphragm 51 As the pressure is lowered, the overflow detection diaphragm 51 is brought into close contact with the flow path hole 16-1 on the valve body 10 side by the return spring 5, and the touch rod 52 moved therewith is a micro switch 50. Is spaced apart from the switch bar 53.

Therefore, an electrical signal is applied to the solenoid according to the closing signal in the open state due to the conversion of the micro switch 50 to push the interlocking arm 42 of the toggle mechanism and the operating rod 6 installed on the on / off valve 4. By lowering the closing valve 4 will be closed.

That is, the open state of the on-off valve 4 is instantaneously lowered to block the orifice 3. That is, the flow path of the gas from the inlet pipe 1 "A" chamber to the valve outlet pipe 2 "B" chamber is interrupted | blocked.

In addition, in FIG. 7, the diaphragm 12 is fixed by forming the expansion diaphragm 12 having the corrugated pipe 11 integrally by opening the upper valve body 10 of the orifice 3 and fixing it with the upper cap 14. At the lower end, an interlocking rod 15 fixing the opening and closing valve 4 is configured to open and close the orifice 3, and the operating rod 6 is fixed to the diaphragm 12 to expose the upper cap 14 to the upper portion. By configuring the knob (7) to allow the user to open and close the valve as needed, the present invention is configured in parallel and individually configured a plurality of means by the pressure difference and the electrical and sensing functions to increase the safety and at the same time only simple functions as needed It is a useful design that can be configured to obtain the convenience of production and use.

As described above, the present invention provides an automatic gas supply line opening / closing function to obtain a precise opening and closing action by opening and closing a valve without a separate power source by opening and closing a servo valve with a pressure difference between a valve inlet and an outlet side.

With the large pressure sensing area of the overflow detection diaphragm, it detects the pressure drop in the gas supply pipe and detects the pressure drop in the gas supply pipe to turn on / off the micro switch and transmit the electrical signal to the solenoid.

Shut off function by using toggle lock device by external signal that can close valve by interlocking arm by interlocking arm by interlocking solenoid by external electric signal, and simply press the valve by force and any manual knob. In addition to the opening and closing configuration that can be manually operated together or integrally or as necessary, the combination of 1,2 and 3, and each configuration separately to ensure safety and convenience of use to increase the safety and accidents It is a useful invention which can be prevented beforehand.

Claims (8)

The actuating rod 6 and the knob of the opening and closing valve 4 together with the spring 5 are formed by forming the " A " chamber of the inlet pipe 1 and the " B " (7) Or in a conventional gas automatic valve opening and closing device configured to be operated by a solenoid valve, Opening the upper valve body (10) of the orifice (3) constitutes a telescopic diaphragm (12) integrally formed with a corrugated pipe (11), and is fixed with an upper cap (14) that constitutes a "C" chamber, which is an inner pressure chamber (13). In addition, the lower end of the diaphragm (12) constitutes an interlocking rod (15) fixing the opening and closing valve (4) to open and close the orifice (3). The diaphragm 12 fixes the actuating rod 6 to expose the upper cap 14 to the upper portion so that the actuating rod 6 is interlocked by the manual knob 7 and the solenoid 41 to open / close the valve 4. In conjunction with the orifice (3) to open and close, On the bottom surface of the “B” chamber of the valve body 10, a flow path hole 16 is formed to constitute a “D” seal and an “E” seal to separate the servo valve 20. The valve rod 26 is connected to the interlocking rod 22 and elastically installed with the adjusting bolt 23 and the pressure regulating spring 24, and the flow path groove 25 is formed on the outer circumferential surface thereof and fastened with the cover 27. The servo body 28 of the cover 27 drills up and down holes 29 and 29-1 so that the lower and outlet holes 29-1 are the "C" chamber and the valve body 10, which are the inner pressure chambers 13, respectively. And the flow path tube 30 formed of the servo body 28 are connected to the pressure chamber "C" chamber and the outlet pipe 2 "B" chamber of the valve, and the up-and-out hole 29 is the valve inlet tube 1. It is connected to the pressure chamber "C" chamber in the "A" chamber of the opening and closing by the servo valve with the pressure difference between the valve inlet side and the outlet side. Valve. By fixing the operating rod (6) fixed to the upper end of the orifice (3) to expose the upper cap (14) above, with the closing by the manual knob (7), The end of the interlocking arm 42 hinged to the upper cap 14 by fixing the "∪" -shaped fixture 40 is pushed the operating rod 6 from the lower end of the manual knob (7) and other linkage arm (42) The side portion is connected to the seal 43 of the solenoid 41 fixed to the fixed body 40, the seal 43 of the solenoid moves the interlocking arm 42 to lower the automatic rod 6 on the other side to close the valve. Configure solenoid to open and close Gas automatic shutoff valve, characterized in that the gas leakage blocking function to close the valve by the solenoid and toggle lock device by the external electrical signal. It consists of a servo valve 20 and the upper cap 14 in the valve body 10, the flow path hole (16-1) is formed in the "B" chamber of the valve body 10 and the overflow detection diaphragm (51) and The touch rod 52 fixed thereto is elastically installed with the overflow spring 54, and the on / off switch rod 53 of the micro switch 50 is configured outside of the interlocking operation of the touch rod 52 to provide the overflow sensing diaphragm. A gas automatic shutoff valve characterized in that the microswitch is turned on / off by pressure detection and an electrical signal is transmitted to the solenoid. The method according to claim 1 or 2, Opening the upper valve body 10 of the orifice 3 to form an expansion and contraction diaphragm 12 integrally constituted by the corrugated pipe 11 to be fixed by the upper cap 14, and the lower end of the diaphragm 12, the opening and closing valve ( 4) to open and close the orifice (3) by configuring the interlocking rod (15) fixed The diaphragm 12 is fixed to the operating rod (6) to expose the upper cap 14, the automatic opening and closing valve, characterized in that the opening and closing with the manual knob (7). The method according to claim 1 or 2, By opening and closing the servo valve by the pressure difference between the valve inlet and outlet side, the automatic diaphragm opening and closing function without the power source to the diaphragm caused by the pressure difference, and the gas leakage blocking function to open and close the valve by solenoid by the external electrical signal and manual Gas automatic shutoff valve, characterized in that made by combining. The method according to claim 1 or 3, By opening and closing the servo valve by the pressure difference between the valve inlet and outlet side, the diaphragm by the pressure difference is automatically turned on and off by the automatic gas supply line opening and closing function and the flow sensing diaphragm pressure sensing without the power source, Gas solenoid valve, characterized in that it is made by combining the over-current blocking function to open and close by the solenoid. The method according to claim 2 or 3, The micro switch is turned on / off by pressure sensing of the overflow detecting diaphragm and the electrical signal is transmitted to the solenoid. Gas automatic shut-off valve characterized in that the combination of the gas leakage blocking function. The method according to claim 2 or 3, By opening and closing the servo valve by the pressure difference between the valve inlet and outlet side, the gas leakage blocking to open and close the valve by solenoid and manual knob by the automatic gas supply line opening and closing function and external electric signal without diaphragm caused by the pressure difference. Function and Overflow Detection Diaphragm pressure detection and switching the micro switch on / off and electric signal to the solenoid, and the solenoid toggle locking device to open and close the gas, characterized in that the automatic opening and closing function valve.