CN209839286U - Natural gas safety valve - Google Patents
Natural gas safety valve Download PDFInfo
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- CN209839286U CN209839286U CN201920103364.0U CN201920103364U CN209839286U CN 209839286 U CN209839286 U CN 209839286U CN 201920103364 U CN201920103364 U CN 201920103364U CN 209839286 U CN209839286 U CN 209839286U
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Abstract
A natural gas safety valve comprises a valve body, a valve cover and a sealing guide rod, wherein the bottom of the sealing guide rod is positioned at an air inlet in the valve body, the top of the sealing guide rod is positioned in the valve cover, an electromagnetic valve and an electromagnet are arranged in the valve body, and the electromagnetic valve is electrically connected with the electromagnet; the top of the sealing guide rod is provided with a magnet, and the electromagnet is positioned above the magnet. The electromagnetic valve is electrically connected with the processing circuit, the processing circuit comprises a flow sensor, an infrared sensor device, a signal processing module, a voltage stabilizing diode and an electromagnetic relay, and the electromagnetic relay is electrically connected with the electromagnetic valve. When the natural gas cooker is not used, no flame and natural gas flow, the signal processing module outputs low voltage, the two ends of the voltage stabilizing diode are not conducted, the circuit is disconnected, the electromagnetic relay, the electromagnetic valve and the electromagnet are not electrified, the electromagnet is not magnetic and cannot attract the magnet, the magnet and the sealing guide rod move towards the direction far away from the electromagnet, the sealing guide rod seals the air inlet of the valve body, the natural gas valve body is automatically closed, and the personal safety of a user is ensured.
Description
Technical Field
The utility model relates to a gas valve especially relates to a natural gas relief valve.
Background
A natural gas pipeline in a modern family is directly connected with a natural gas cooker, the natural gas pipeline is controlled to be opened and closed by a natural gas master control valve, and a user manually twists the natural gas master control valve to control the natural gas to be opened and closed. However, people often open the natural gas master control valve for a long time in life, and in case of aging and damage of a natural gas pipeline, natural gas leakage is easily caused, so that great hidden dangers exist in personal safety of natural gas users.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned technical problem to a natural gas relief valve is provided.
The utility model discloses a following technical scheme realizes:
a natural gas safety valve comprises a valve body 1, a valve cover 2 and a sealing guide rod 8, wherein the bottom of the sealing guide rod 8 is positioned at an air inlet in the valve body 1, the top of the sealing guide rod 8 is positioned in the valve cover 2, an electromagnetic valve 3 and an electromagnet 4 are arranged in the valve body 1, and the electromagnetic valve 3 is electrically connected with the electromagnet 4; the top of the sealing guide rod 8 is provided with a magnet 6, and the electromagnet 4 is positioned above the magnet 6;
when the electromagnetic valve 3 is electrified, the electromagnet 4 is electrified and has magnetism, and attracts the magnet 6, so that the magnet 6 drives the sealing guide rod 8 to move towards the electromagnet 4, and an air inlet in the valve body 1 is opened; when the electromagnetic valve 3 is powered off, the electromagnet 4 is powered off and loses magnetism, the magnet 6 cannot be attracted, the magnet 6 and the sealing guide rod 8 move towards the direction far away from the electromagnet 4, and the air inlet in the valve body 1 is closed;
the electromagnetic valve 3 is electrically connected with a processing circuit, and the processing circuit comprises a power supply 12, a protective resistor 13, a button switch 14, a flow sensor 7, an infrared sensor device 15, a signal processing module 16, a voltage stabilizing diode 17, a signal amplifier 18 and an electromagnetic relay 19; a flow sensor 7 is arranged at an air inlet in the valve body 1, the positive electrode of the power supply 12 is electrically connected with one end of a protective resistor 13, one end of the flow sensor 7 and one end of an infrared sensor device 15 respectively, and the negative electrode of the power supply 12 is electrically connected with one end of an electromagnetic relay 19; the other end of the protection resistor 13 is electrically connected with one end of a button switch 14, and the other end of the button switch 14 is respectively electrically connected with the output end of a signal amplifier 18 and the other end of an electromagnetic relay 19; the other end of the flow sensor 7 and the other end of the infrared sensor device 15 are respectively and electrically connected with the input ends of the signal processing module 16, the voltage stabilizing diode 17 and the signal amplifier 18 in sequence; the electromagnetic relay 19 is electrically connected with the electromagnetic valve 3;
the infrared sensor device 15 is arranged at the rear end of the natural gas cooker and used for detecting the combustion flame of the natural gas cooker; the button switch 14 is arranged on the surface of the natural gas cooker.
Further, when the valve body 1 is closed, the air inlet of the valve body 1 is sealed by the sealing guide rod 8, at this time, the distance between the top of the magnet 6 and the bottom of the electromagnet 4 is a first distance D1, and the first distance D1 is 10-15 cm.
Further, set up first spring 5 between magnet 6 and the valve body 1, first spring 5 one end is connected with magnet 6 bottom, and the other end is connected with valve body 1.
Further, the valve body 1 and the valve cover 2 are connected through a fixing bolt 11.
Furthermore, the two ends of the valve body 1 are symmetrically provided with electromagnetic valves 3, and the air inlet in the valve body 1 is symmetrically provided with flow sensors 7.
Further, the valve body 1 is provided with a guide seat 9, the guide seat 9 is provided with a through hole, and the sealing guide rod 8 can penetrate through the through hole of the guide seat 9 and move up and down relative to the air inlet of the valve body 1, so that the air inlet of the valve body 1 is opened or closed.
Further, the valve body 1 is provided with a lead hole 10, and a lead wire passes through the lead hole 10 to electrically connect the flow sensor 7 with the infrared sensor device 15.
Further, the infrared sensor device 15 includes a housing 151 and an infrared sensor 152, the housing 151 is provided with a wire guide 153, and the infrared sensor 152 is disposed on a surface of the housing 151.
Furthermore, the model of the flow sensor 7 is CFA100, the model of the infrared sensor 152 is KP500B, the model of the signal processing module 16 is ISO 4021, the model of the zener diode 17 is MM1Z75, and the model of the signal amplifier 18 is ATA-5220.
Further, the button switch 14 includes a button 141, a second spring 142, a switch housing 143, a movable contact 144, a button push rod 145 and a stationary contact 146, the button 141 is located outside the switch housing 143, one end of the button push rod 145 is connected to the bottom of the button 141, and the other end is located inside the switch housing 143 and connected to the movable contact 144; one end of the second spring 142 is connected with the bottom of the button 141, and the other end is connected with the top of the switch shell 143; a fixed contact 146 is correspondingly arranged below the movable contact 144, the distance between the movable contact 144 and the fixed contact 146 is a second distance D2, and the second distance D2 is 2-4 cm; two ends of the stationary contact 146 are two ends of the push switch 14, respectively.
Compared with the prior art, the utility model discloses main beneficial effect as follows: (1) the utility model overcomes prior art prejudice sets up solenoid valve and electro-magnet in the valve body, and the solenoid valve is connected with the electro-magnet electricity, sets up magnet at sealed guide arm top, and the electro-magnet is located the magnet top, and the solenoid valve is connected with the processing circuit electricity. The processing circuit comprises a power supply, a protective resistor, a button switch, a flow sensor, an infrared sensor device, a signal processing module, a voltage stabilizing diode, a signal amplifier and an electromagnetic relay, wherein the electromagnetic relay is electrically connected with the electromagnetic valve. After the signal processing module receives a signal that the flow sensor detects that the natural gas flows and a signal that the infrared sensor device sends out that the natural gas cooker burns flames, the signal processing module outputs high voltage which is larger than the breakdown voltage of the voltage stabilizing diode, so that the voltage stabilizing diode is reversely broken down and conducted. Under other conditions, the signal processing module outputs low voltage which is smaller than the breakdown voltage of the voltage stabilizing diode, the resistance of the voltage stabilizing diode is very large, two ends of the voltage stabilizing diode are not conducted, and the circuit is disconnected. When the user does not use the natural gas cooking utensils, there is not flame combustion nor natural gas flow, signal processing module will export low-voltage this moment, zener diode both ends do not switch on, the circuit disconnection, electromagnetic relay does not switch on and does not switch on, the solenoid valve does not switch on, therefore the electro-magnet does not have magnetism, can not attract magnet, magnet will move towards the direction of keeping away from the electro-magnet, and then drive the direction motion of sealed guide arm orientation keeping away from the electro-magnet, make sealed guide arm seal valve body air inlet department, make the natural gas pipeline unable entering natural gas pipeline, thereby realize the self-closing natural gas valve body when the user does not use the natural gas cooking utensils, prevent that the natural gas from taking place to leak, ensure user's personal safety. (2) When a user needs to use the natural gas cooker, the button switch is pressed, and when the button switch is pressed, the power supply voltage is divided by the protective resistor and then supplies power to the electromagnetic relay. The electromagnetic relay is electrically connected with the electromagnetic valve, and when the electromagnetic relay is electrified, the electromagnetic relay is conducted to enable the electromagnetic valve to be electrified. The electromagnetic valve is electrically connected with the electromagnet, when the electromagnetic valve is electrified, the electromagnet is also electrified, and the electromagnet is magnetic after being electrified, attracts the magnet at the top of the sealing guide rod, enables the magnet to move towards the electromagnet, and further drives the sealing guide rod to move towards the electromagnet, so that the valve body is opened, and natural gas can enter the pipeline. After natural gas enters the pipeline, the flow sensor arranged at the air inlet in the valve body can detect that the natural gas flows, and sends corresponding signals to the signal processing module. The user keeps the time for about 5 seconds after pressing the button switch, and simultaneously presses the ignition knob of the natural gas cooker to ignite the natural gas cooker and burn flame. The infrared sensor device arranged at the rear end of the natural gas cooker can detect that flame burning occurs in the natural gas cooker, and sends corresponding signals to the signal processing module. The user presses the button switch for about 5 seconds and then releases the button switch, and the button switch is switched off, so that the electromagnetic relay is powered off. At the moment, after the signal processing module receives a signal that the flow sensor detects that the natural gas flows and a signal that the infrared sensor device sends out that the natural gas cooker generates flame combustion, the signal processing module outputs high voltage which is larger than the breakdown voltage of the voltage stabilizing diode, so that the voltage stabilizing diode is reversely broken down and conducted. The output current of the signal processing module passes through the voltage stabilizing diode, then the current is amplified through the signal amplifier, and then the current passes through the electromagnetic relay, so that the electromagnetic relay is electrified and conducted. Also after the user loosens button switch and makes electromagnetic relay outage, make electromagnetic relay circular telegram again immediately and switch on, and then make solenoid valve, the equal circular telegram of electro-magnet, the electromagnetism iron circular telegram has magnetism, attracts sealed guide arm top magnet, makes magnet move towards the electro-magnet, and then drives sealed guide arm and move towards the electro-magnet to open the internal air inlet of valve, make the natural gas can get into the pipeline, the user can strike sparks by normal use natural gas cooking utensils. The use is safe and convenient. (3) The utility model discloses simple structure, low in manufacturing cost is honest and clean, and convenience safe in utilization has market perspective.
Drawings
FIG. 1 is a sectional view of the present invention
FIG. 2 is a schematic circuit diagram of the present invention
Fig. 3 is a schematic structural view of the push button switch 14 of the present invention
FIG. 4 is a schematic structural view of the infrared sensor device of the present invention
In the figure:
1-a valve body; 2-valve cover; 3-an electromagnetic valve; 4-an electromagnet; 5-a first spring; 6-a magnet; 7-a flow sensor; 8-sealing the guide rod; 9-a guide seat; 10-a lead hole; 11-fixing the bolt; 12-a power supply; 13-protective resistance; 14-a push button switch; 141-a button; 142-a second spring; 143-a switch housing; 144-moving contact; 145-push button push rod; 146-stationary contact; 15-an infrared sensor device; 151-a housing; 152-an infrared sensor; 153-wire guides; 16-a signal processing module; 17-a zener diode; 18-a signal amplifier; 19-an electromagnetic relay;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a natural gas safety valve comprises a valve body 1, a valve cover 2 and a sealing guide rod 8, wherein the bottom of the sealing guide rod 8 is positioned at an air inlet in the valve body 1, the top of the sealing guide rod 8 is positioned in the valve cover 2, an electromagnetic valve 3 and an electromagnet 4 are arranged in the valve body 1, and the electromagnetic valve 3 is electrically connected with the electromagnet 4; the top of the sealing guide rod 8 is provided with a magnet 6, and the electromagnet 4 is positioned above the magnet 6;
when the electromagnetic valve 3 is electrified, the electromagnet 4 is electrified and has magnetism, and attracts the magnet 6, so that the magnet 6 drives the sealing guide rod 8 to move towards the electromagnet 4, and an air inlet in the valve body 1 is opened; when the electromagnetic valve 3 is powered off, the electromagnet 4 is powered off and loses magnetism, the magnet 6 cannot be attracted, the magnet 6 and the sealing guide rod 8 move towards the direction far away from the electromagnet 4, and the air inlet in the valve body 1 is closed;
the electromagnetic valve 3 is electrically connected with a processing circuit, and the processing circuit comprises a power supply 12, a protective resistor 13, a button switch 14, a flow sensor 7, an infrared sensor device 15, a signal processing module 16, a voltage stabilizing diode 17, a signal amplifier 18 and an electromagnetic relay 19; the flow sensor 7 is connected in parallel with the infrared sensor device 15 and then sequentially connected in series with the signal processing module 16, the voltage stabilizing diode 17, the signal amplifier 18 and the electromagnetic relay 19, the protection resistor 13 is connected in series with the button switch 14, one end (end a) of the protection resistor 13 is electrically connected with one end (end F) of the flow sensor 7 and one end (end E) of the infrared sensor device 15 respectively, one end (end D) of the button switch 14 is electrically connected with one end (end G) of the signal amplifier 18 and one end (end H) of the electromagnetic relay 19 respectively, the positive electrode of the battery 12 is electrically connected with one end (end a) of the protection resistor 13, and the negative electrode of the battery is electrically connected with the other end (end I) of the electromagnetic relay 19; the electromagnetic relay 19 is electrically connected with the electromagnetic valve 3, and a flow sensor 7 is arranged at an air inlet in the valve body 1;
the infrared sensor device 15 is arranged at the rear end of the natural gas cooker and used for detecting the combustion flame of the natural gas cooker; the button switch 14 is arranged on the surface of the natural gas cooker.
Specifically, when the valve body 1 is closed, the sealing guide rod 8 can seal the air inlet of the valve body 1, so that natural gas cannot enter a natural gas pipeline.
Preferably, the power supply 12 supplies 24V.
Further, when the valve body 1 is closed, the air inlet of the valve body 1 is sealed by the sealing guide rod 8, at this time, the distance between the top of the magnet 6 and the bottom of the electromagnet 4 is a first distance D1, and the first distance D1 is 10-15 cm.
Further, set up first spring 5 between magnet 6 and the valve body 1, first spring 5 one end is connected with magnet 6 bottom, and the other end is connected with valve body 1.
Further, the valve body 1 and the valve cover 2 are connected through a fixing bolt 11.
Furthermore, the two ends of the valve body 1 are symmetrically provided with electromagnetic valves 3.
Further, flow sensors 7 are symmetrically arranged at the air inlet in the valve body 1.
Specifically, one of the flow sensors 7 is on standby, and only one of the flow sensors 7 is electrically connected to the infrared sensor device 15. When one flow sensor 7 is damaged and cannot work, the other flow sensor 7 can be electrically connected with the infrared sensor 15, and the natural gas safety valve can work normally.
Further, the valve body 1 is provided with a guide seat 9, the guide seat 9 is provided with a through hole, and the sealing guide rod 8 can penetrate through the through hole of the guide seat 9 and move up and down relative to the air inlet of the valve body 1, so that the air inlet of the valve body 1 is opened or closed.
Further, the valve body 1 is provided with a lead hole 10, and a lead wire passes through the lead hole 10 to electrically connect the flow sensor 7 with the infrared sensor device 15.
Further, as shown in fig. 4, the infrared sensor device 15 includes a housing 151 and an infrared sensor 152, the housing 151 is provided with a wire guide 153, and the infrared sensor 152 is provided on a surface of the housing 151.
Specifically, the valve body 1 is provided with a lead hole 10, and a lead wire passes through the lead hole 10 and the lead hole 153 in this order to electrically connect the flow sensor 7 and the infrared sensor device 15.
Furthermore, the model of the flow sensor 7 is CFA100, the model of the infrared sensor 152 is KP500B, the model of the signal processing module 16 is ISO 4021, the model of the zener diode 17 is MM1Z75, and the model of the signal amplifier 18 is ATA-5220.
Further, as shown in fig. 3, the button switch 14 includes a button 141, a second spring 142, a switch housing 143, a movable contact 144, a button push rod 145 and a stationary contact 146, the button 141 is located outside the switch housing 143, one end of the button push rod 145 is connected to the bottom of the button 141, and the other end is located inside the switch housing 143 and connected to the movable contact 144; one end of the second spring 142 is connected with the bottom of the button 141, and the other end is connected with the top of the switch shell 143; a fixed contact 146 is correspondingly arranged below the movable contact 144, the distance between the movable contact 144 and the fixed contact 146 is a second distance D2, and the second distance D2 is 2-4 cm; one end (i.e., the end C of the button switch 14) of the stationary contact 146 is connected to the other end (the end B) of the protection resistor 13, and the other end (i.e., the end D of the button switch 14) of the stationary contact 146 is connected to one end (the end G) of the signal amplifier 18 and the other end (the end I) of the electromagnetic relay 19, respectively.
Specifically, when the user presses the push button switch 14, that is, presses the button 141, the button push rod 145 moves toward the stationary contact 146, and the movable contact 144 gradually approaches the stationary contact 146. When the movable contact 144 contacts the fixed contact 146, the protection resistor 13 is conducted with the push switch 14, and the circuit is conducted.
The utility model discloses the theory of operation as follows:
when a user needs to use the natural gas cooker, the button switch 14 is pressed, the movable contact 144 is contacted with the fixed contact 146, the protective resistor 13 is conducted with the button switch 14, the circuit is conducted, and the voltage of the power supply 12 is divided by the protective resistor 13 to supply power to the electromagnetic relay 19. The electromagnetic relay 19 is electrically connected to the electromagnetic valve 3, and when the electromagnetic relay 19 is energized, the electromagnetic relay 19 is turned on to energize the electromagnetic valve 3. Solenoid valve 3 is connected with electro-magnet 4 electricity, and when 3 circular telegrams backs of solenoid valve, make electro-magnet 4 also circular telegrams, has magnetism after 4 circular telegrams of electro-magnet, attracts 8 top magnets 6 of sealed guide arm, makes magnet 6 move towards electro-magnet 4, and then drives 8 motion towards electro-magnet 4 of sealed guide arm to open the interior air inlet of valve body 1, make the natural gas can get into the pipeline.
After natural gas enters the pipeline, the flow sensor 7 arranged at the air inlet in the valve body 1 can detect that the natural gas flows, and sends corresponding signals to the signal processing module 16.
The user keeps for about 5 seconds after pressing the button switch 14, and simultaneously presses the ignition knob of the natural gas cooker to ignite the natural gas cooker and burn flame. The infrared sensor device 15 arranged at the rear end of the natural gas cooker can detect that flame burning occurs in the natural gas cooker, and sends corresponding signals to the signal processing module 16.
The user presses the push switch 14 for about 5 seconds and then releases the push switch 14, so that the electromagnetic relay 19 is turned off.
At this time, after the signal processing module 16 receives the signal that the flow sensor 7 detects that the natural gas flows and the signal that the infrared sensor device 15 sends out that the natural gas cooking appliance burns flame, the signal processing module 16 outputs a high voltage, which is greater than the breakdown voltage of the zener diode 17, so that the zener diode 17 is reversely broken down and conducted. The output current of the signal processing module 16 passes through the voltage stabilizing diode 17, then the current is amplified through the signal amplifier 18, and then the current passes through the electromagnetic relay 19, so that the electromagnetic relay 19 is electrified and conducted. That is, immediately after the user turns off the electromagnetic relay 19 after releasing the push switch 14, the electromagnetic relay 19 is again energized and turned on.
When the electromagnetic relay 19 is energized again, the electromagnetic relay 19 is turned on to energize the electromagnetic valve 3. Solenoid valve 3 is connected with electro-magnet 4 electricity, and after 3 circular telegrams of solenoid valve, makes electro-magnet 4 circular telegrams, has magnetism after 4 circular telegrams of electro-magnet, attracts 8 top magnets 6 of sealed guide arm, makes magnet 6 move towards electro-magnet 4, and then drives sealed guide arm 8 and move towards electro-magnet 4 to open air inlet in the valve body 1, make the natural gas can get into the pipeline, the user can strike sparks with normal use natural gas cooking utensils.
After the signal processing module 16 receives the signal that the flow sensor 7 detects that the natural gas flows and the signal that the infrared sensor device 15 sends out that the natural gas cooking utensils generate flame combustion, the signal processing module 16 outputs high voltage, which is greater than the breakdown voltage of the voltage stabilizing diode 17, so that the voltage stabilizing diode 17 is reversely broken down and conducted. Under other conditions, the signal processing module 16 outputs a low voltage which is smaller than the breakdown voltage of the voltage stabilizing diode 17, the resistance of the voltage stabilizing diode 17 is very large, two ends of the voltage stabilizing diode 17 are not conducted, and the circuit is disconnected.
When a user needs to close the flame midway when using the natural gas cooker to cook dishes, the ignition knob of the natural gas cooker is rotated to close the flame. At this time, the infrared sensor device 15 does not detect that flame burning occurs in the natural gas stove, the infrared sensor device 15 sends the signal to the signal processing module 16, the signal processing module 16 outputs a low voltage at this time, the low voltage is smaller than the breakdown voltage of the voltage stabilizing diode 17, the resistance of the voltage stabilizing diode 17 is large, the two ends of the voltage stabilizing diode 17 are not conducted, the circuit is disconnected, and the electromagnetic relay 19 is not conducted. The electromagnetic relay 19 is electrically connected to the electromagnetic valve 3, and the electromagnetic valve 3 is electrically connected to the electromagnet 4, so that when the electromagnetic relay 19 is not energized, neither the electromagnetic valve 3 nor the electromagnet 4 is energized. Electromagnet 4 is not electrified and does not have magnetism, can not attract magnet 6, and magnet 6 will move towards the direction of keeping away from electromagnet 4, and then drive the direction motion of sealed guide arm 8 orientation keeping away from electromagnet 4, makes sealed guide arm 8 seal valve body 1 air inlet department, makes the unable natural gas line that gets into of natural gas line.
When a user closes the flame for a period of time in the middle of cooking with the natural gas cooker and needs to open the flame again, the user needs to press the button switch 14 first, and the voltage of the power supply 12 is divided by the protective resistor 13 to supply power to the electromagnetic relay 19. The electromagnetic relay 19 is electrically connected to the electromagnetic valve 3, and when the electromagnetic relay 19 is energized, the electromagnetic relay 19 is turned on to energize the electromagnetic valve 3. Solenoid valve 3 is connected with electro-magnet 4 electricity, and when 3 circular telegrams backs of solenoid valve, make electro-magnet 4 also circular telegrams, has magnetism after 4 circular telegrams of electro-magnet, attracts 8 top magnets 6 of sealed guide arm, makes magnet 6 move towards electro-magnet 4, and then drives 8 motion towards electro-magnet 4 of sealed guide arm to open the interior air inlet of valve body 1, make the natural gas can get into the pipeline.
When the valve body 1 is closed, the sealing guide rod 8 can seal the air inlet of the valve body 1, so that natural gas cannot enter a natural gas pipeline. The signal processing module 16 outputs high voltage or low voltage according to the inputted electric signal, and is prior art, not the utility model discloses an improvement and protection scope. In specific implementation, the method can be realized by adopting the prior art. The utility model protects is the structure of natural gas relief valve.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications and equivalent changes made according to the technical spirit of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a natural gas safety valve, includes valve body (1), valve gap (2) and sealed guide arm (8), sealed guide arm (8) bottom is located air inlet department in valve body (1), and the top is located inside valve gap (2), its characterized in that: an electromagnetic valve (3) and an electromagnet (4) are arranged in the valve body (1), and the electromagnetic valve (3) is electrically connected with the electromagnet (4); the top of the sealing guide rod (8) is provided with a magnet (6), and the electromagnet (4) is positioned above the magnet (6);
when the electromagnetic valve (3) is electrified, the electromagnet (4) is electrified and has magnetism, and attracts the magnet (6), so that the magnet (6) drives the sealing guide rod (8) to move towards the electromagnet (4), and an air inlet in the valve body (1) is opened; when the electromagnetic valve (3) is powered off, the electromagnet (4) is powered off and loses magnetism, the magnet (6) cannot be attracted, the magnet (6) and the sealing guide rod (8) move towards the direction away from the electromagnet (4), and an air inlet in the valve body (1) is closed;
the electromagnetic valve (3) is electrically connected with a processing circuit, and the processing circuit comprises a power supply (12), a protective resistor (13), a button switch (14), a flow sensor (7), an infrared sensor device (15), a signal processing module (16), a voltage stabilizing diode (17), a signal amplifier (18) and an electromagnetic relay (19); a flow sensor (7) is arranged at an air inlet in the valve body (1), the positive electrode of the power supply (12) is electrically connected with one end of a protective resistor (13), one end of the flow sensor (7) and one end of an infrared sensor device (15) respectively, and the negative electrode of the power supply (12) is electrically connected with one end of an electromagnetic relay (19); the other end of the protective resistor (13) is electrically connected with one end of a button switch (14), and the other end of the button switch (14) is respectively and electrically connected with the output end of a signal amplifier (18) and the other end of an electromagnetic relay (19); the other end of the flow sensor (7) and the other end of the infrared sensor device (15) are respectively and electrically connected with the input ends of the signal processing module (16), the voltage stabilizing diode (17) and the signal amplifier (18) in sequence; the electromagnetic relay (19) is electrically connected with the electromagnetic valve (3);
the infrared sensor device (15) is arranged at the rear end of the natural gas cooker and used for detecting the combustion flame of the natural gas cooker; the button switch (14) is arranged on the surface of the natural gas cooker.
2. A gas safety valve as claimed in claim 1, wherein: when the valve body (1) is closed, the air inlet of the valve body (1) is sealed by the sealing guide rod (8), at the moment, the distance between the top of the magnet (6) and the bottom of the electromagnet (4) is a first distance D1, and the first distance D1 is 10-15 cm.
3. A gas safety valve according to claim 2, wherein: set up first spring (5) between magnet (6) and valve body (1), first spring (5) one end is connected with magnet (6) bottom, and the other end is connected with valve body (1).
4. A gas safety valve according to claim 3, wherein: the valve body (1) is connected with the valve cover (2) through a fixing bolt (11).
5. A natural gas safety valve according to claim 4, wherein: the electromagnetic valves (3) are symmetrically arranged at two ends of the valve body (1), and the flow sensors (7) are symmetrically arranged at air inlets in the valve body (1).
6. A natural gas safety valve according to claim 1, 2, 3, 4 or 5, wherein: the valve body (1) is provided with a guide seat (9), the guide seat (9) is provided with a through hole, and the sealing guide rod (8) can penetrate through the through hole of the guide seat (9) and move up and down relative to the air inlet of the valve body (1) so as to open or close the air inlet of the valve body (1).
7. A natural gas safety valve according to claim 1, 2, 3, 4 or 5, wherein: the valve body (1) is provided with a lead hole (10), and a lead passes through the lead hole (10) to electrically connect the flow sensor (7) with the infrared sensor device (15).
8. A natural gas safety valve according to claim 1, 2, 3, 4 or 5, wherein: the infrared sensor device (15) comprises a shell (151) and an infrared sensor (152), wherein the shell (151) is provided with a wire guide hole (153), and the infrared sensor (152) is arranged on the surface of the shell (151).
9. A natural gas safety valve according to claim 1, 2, 3, 4 or 5, wherein: the flow sensor (7) is CFA100 in model, the infrared sensor (152) is KP500B in model, the signal processing module (16) is ISO 4021 in model, the zener diode (17) is MM1Z75 in model, and the signal amplifier (18) is ATA-5220 in model.
10. A natural gas safety valve according to claim 1, 2, 3, 4 or 5, wherein: the button switch (14) comprises a button (141), a second spring (142), a switch shell (143), a movable contact (144), a button push rod (145) and a fixed contact (146), wherein the button (141) is positioned outside the switch shell (143), one end of the button push rod (145) is connected with the bottom of the button (141), and the other end of the button push rod (145) is positioned in the switch shell (143) and is connected with the movable contact (144); one end of the second spring (142) is connected with the bottom of the button (141), and the other end of the second spring is connected with the top of the switch shell (143); a fixed contact (146) is correspondingly arranged below the movable contact (144), the distance between the movable contact (144) and the fixed contact (146) is a second distance D2, and the second distance D2 is 2-4 cm; and two ends of the static contact (146) are two ends of the button switch (14) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103364.0U CN209839286U (en) | 2019-01-22 | 2019-01-22 | Natural gas safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103364.0U CN209839286U (en) | 2019-01-22 | 2019-01-22 | Natural gas safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209839286U true CN209839286U (en) | 2019-12-24 |
Family
ID=68902312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920103364.0U Expired - Fee Related CN209839286U (en) | 2019-01-22 | 2019-01-22 | Natural gas safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209839286U (en) |
-
2019
- 2019-01-22 CN CN201920103364.0U patent/CN209839286U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210122 |