TW201606241A - Leakage prevention controlling method for gas pipeline - Google Patents

Abstract

The invention provides a leakage prevention controlling method for gas pipeline. The leakage prevention controlling method comprises: (A) forcibly supplying gas flow for a predetermined period of time in which, before the fire is ignited, a solenoid valve is first forced to generate magnetic excitation for a predetermined period of time to fully fill gas into a safety valve and its pipeline through an gas intake passage; (B) forcibly cutting off gas supply in which the power supply required for magnetic excitation of the solenoid valve is forcibly cut off so that the solenoid valve is no longer energized and a piston shutter of the solenoid valve blocks the entrance of the gas intake passage; (C) detecting and determining whether there is gas leakage in which, after gas has been filled and stayed in the safety valve and its pipeline for a period of time, a pressure sensor inside the safety valve sends a detected signal to an electric circuit board for use as an evidence to determine whether there is abnormal gas leakage; and (D) determining whether to supply gas again in which, when the pressure data detected by the pressure sensor inside the safety valve is smaller than a predetermined value or the detected pressure data is gradually reduced (an indication of presence of gas leakage), the solenoid valve is ensured not to be magnetically excited again so as to make sure that gas does not flow back into the safety valve and its pipeline. When pressure data detected by the pressure sensor inside the safety valve reaches or exceeds a predetermined value (an indication of absence of gas leakage), the solenoid valve can be magnetically excited again so as to ensure that gas can flow back into the safety valve and its pipeline again.

Description

Gas pipeline safety leak prevention control method

The invention relates to a safety leakage control method for a gas pipeline; in particular, a gas gas flow which can be forcibly supplied for a predetermined time before each ignition furnace fire flows into the safety valve and the inside of the pipeline, and then forcibly cuts off the electromagnetic The power supply required for the valve excitation detects whether the gas pressure value inside the safety valve and its pipeline remains unchanged through a predetermined time change, as a basis for re-starting the supply of gas gas to the solenoid valve.

According to the conventional gas leak detection device, please refer to the approved invention patent certificate No. I285248, which mainly includes an excitation device and a reed switch on one side of the body, and an induction device and a pressure detector on the other side. And the excitation device and the pressure detector are connected to the control circuit board to feed back the signal or transmit the signal, wherein the main body has an inlet connected to the inner valve chamber, and a passage extends in the valve chamber. The passage is connected to the outlet and is connected to the detection chamber, and a sealing cover is arranged in the valve chamber and the detection outside, and the cover is controlled to generate an adsorption magnetic force, which is disposed in the valve chamber of the body, and Connected to the control circuit board, the magnetic spring open relationship is set above the excitation device and the channel, and is a normally closed channel, which can be controlled by the excitation device to control the opening and closing of the outlet, and the pressure sensing device is received by the body The influence of the gas entering the channel is controlled, and there is a vertical deformation floating, and a control point is arranged at the bottom of the inner side. When the pressure sensing device is deformed and floated up and down, the high bottom position of the control point also changes. , The pressure detector can be detected based The position of the control point on the pressure sensing device is connected to the control circuit board; with the above structure, the magnetic spring opening relationship normally closes the channel and the outlet, and the gas system fills the valve chamber by the inlet, and the channel can enter the exit and the detection Room, the excitation device can generate magnetic force by externally controlling the excitation, and the reed switch is sucked, and the suction port is used to open the channel. When the gas enters the detection chamber, the position of the pressure sensing device is controlled, and the pressure sensing device is used. The displacement of the control point can be sensed by the pressure detector. When the control point is close to the pressure detector, the gas pressure is sufficient. When it is gradually drifting away, it means that the pressure is insufficient and there is gas leakage. When the gas leaks, the excitation occurs. The device controls the reed switch to close the channel.

Although the above-mentioned creations can achieve the original purpose of creation, they are highly praised by the industry and the general operators. However, in view of the industry's continuous innovation and breakthrough in research and development and technology, the applicants have made more efforts to study. Improvement, and make it perfect and practical; plus, the creator has responded with numerous updates to the experimental test and the actual use of the consumer, and found that the following problems still need to be further improved: according to the above Figures 4-6 of the "Gas Leak Detection Device" and its instructions on page 8 line 14 to page 9 line 7 "..., continued from Figure 4, when the gas is opened by the entrance (11) The meeting is filled in the valve chamber (12). When the full pressure reaches the pressure regulating device (30), the pressure regulating device (30) is pushed outward by the gas pressure, which adjusts the inlet (11). The size is used to maintain the pressure of the gas, and the excitation device (40) can be externally controlled to generate magnetic force by the excitation, so that the gas can enter the outlet (14) and the detection chamber (15) simultaneously by the passage (13), ... As shown in Fig. 5, the system is closed by the outlet (14) of the body (10). Then, the inlet (11) is filled with gas, and the magnetic valve switch (50) controls the opening passage (13), so that the pressure sensing device (60) is actuated, ..., after a period of time control If there is no change in the position of point (61), it means that there is no gas leakage between the regulator and the pipeline at the back end, etc., which means that the conventional "gas leak detector" is external. When the excitation device (40) is controlled to generate a magnetic force, Continuous supply of gas into the regulator and piping without interruption, especially if there is a slight leak or small leakage in the regulator or pipeline, if the valve chamber (12) flows into the passage (13) The gas flow rate inside is larger than the leakage flow rate in the regulator or pipeline, and the position of the control point (61) on the pressure sensing device (60) is not moved at all, and the accidental determination is "no leakage gas gas". However, the state in which the gas is ignited while using the side of the furnace is leaked, so that the indoor is easily covered with a high concentration of carbon monoxide or an accidental risk of causing a gas explosion.

In view of the above, the present invention proposes a gas pipeline safety leak prevention control method in response to the above-mentioned shortcomings of the prior art, so as to effectively overcome the above problems, in order to benefit all consumers and manufacturers.

The gas leakage prevention control method of the gas pipeline of the invention can force the electromagnetic valve to be excited for a predetermined time to supply the gas gas flow into the inner part of the safety valve and the pipeline after each ignition of the fire, and then forcibly Cut off the power supply required for the solenoid valve to be energized, and determine whether the pressure value inside the safety valve and its pipeline is consistent through a certain period of time, and as a basis for whether the solenoid valve can be opened again to supply the gas flow, so When the safety valve before the ignition is ignited or when there is a large leak or a small leak inside the pipeline, the gas supply source of the safety valve can be completely cut off, so as to eliminate the carbon monoxide poisoning phenomenon and prevent the gas leakage during the use side leakage. The unexpected danger of explosion occurs as a progressive effect.

The gas pipeline safety leakage prevention control method of the present invention comprises at least: (A) forcibly supplying a gas flow rate for a predetermined time: before igniting the fire, the electromagnetic valve must be forcibly activated by the control element to generate a predetermined time of excitation. Acting to make gas gas fill the inside of the safety valve and its pipeline through the intake passage; (B) Forced cut off the supply of gas: forced cutting Disconnect the power supply required when the solenoid valve is energized, so that the solenoid valve will not be excited, and the piston valve plate of the solenoid valve can be blocked at the inlet of the air inlet; (C) detect whether the gas leaks abnormally: gas After the gas is filled in the safety valve and its pipeline for a period of time, the information detected by the pressure detector inside the safety valve is transmitted to the circuit board as a basis for judging whether there is abnormal gas leakage; (D) Whether to supply gas gas again: when the pressure value on the side of the pressure detector in the safety valve is less than a predetermined value or the detected value is gradually smaller (ie, there is a leakage phenomenon), it will ensure that the solenoid valve will not be excited again. Action to ensure that the gas cannot flow back into the safety valve and its piping again; when the pressure value on the side of the pressure detector in the safety valve reaches a predetermined value or more and remains unchanged (ie, there is no leakage), The solenoid valve can again generate an energizing action to ensure that the gas can flow back into the safety valve and its piping.

1‧‧‧Safety valve

10‧‧‧Intake passage

11‧‧‧Into the airway

12‧‧‧Airway

13‧‧‧ air chamber

2‧‧‧ solenoid valve

20‧‧‧Axis rod

21‧‧‧ piston plate

25‧‧‧ Spring

3‧‧‧pipe

4‧‧‧ Pressure detector

41‧‧‧film parts

45‧‧‧Magnetic parts

Figure 1 is a flow chart of the safety leak prevention control of the present invention.

Fig. 2 is a sectional view showing the combination of the present invention in the detection and discrimination.

Referring to Figures 1 to 2, the present invention provides a gas leakage prevention control method for a gas pipeline, which is as follows: (A) Forced supply of gas gas flow for a predetermined time: before igniting the fire, it must first The solenoid valve 2 is forcibly activated by a control element (not shown) to generate a magnetizing action for a predetermined time, so that the piston plate member 21 already located on the shaft rod 20 of the solenoid valve 2 can be away from the intake passage 10 of the safety valve 1. (that is, in an open state), and allowing gas to flow into the air inlet passage 11, the air chamber 13, and the air passage 1 which are filled with the safety valve 1 via the intake passage 10 of the safety valve 1. 2 and the inside of the pipe 3, at the same time, the gas gas which has been located in the gas chamber 13 can push the film member 41 upward (outer), and the magnetic member 45 already located on the film member 41 can be passed to the pressure detector. The direction of 4 is close for the pressure detector 4 to measure the pressure value; and the piston plate member 21 of the solenoid valve 2 and the inlet of the air inlet 11 of the safety valve 1 are normally closed; B) Forcibly cutting off the supply of gas: when the solenoid valve 2 is excited for a predetermined time, it is forcibly cut off the supply power (ie, micro current or micro voltage) required when the solenoid valve 2 is excited, so that the solenoid valve 2 is not There is a phenomenon of continued excitation (i.e., the piston plate member 21 of the solenoid valve 2 is pushed by the spring 25 of the solenoid valve 2 to be pushed into the inlet of the air inlet passage 11 of the safety valve 1) as a gas to cut off the gas. The basis of the intake passage 10 of the safety valve 1 flowing into the air inlet passage 11, the air chamber 13 and the air outlet passage 12; (C) detecting whether or not the gas gas is abnormally leaked: when the gas gas is filled in the air inlet passage 11 of the safety valve 1, After a period of time in the gas chamber 13, the air outlet 12 and its line 3, the pressure inside the safety valve 1 is utilized. The message detected by the detector 4 is transmitted to the control area of the circuit board (not shown) as a basis for judging whether there is abnormal gas leakage; however, the detection of the present invention determines whether it is abnormal gas leakage. Exclude the leakage allowed by the national leak test standard value. In other words, if the leaked gas is within the allowable leakage of the national leak test standard value, it is judged as non-abnormal gas gas leakage. Otherwise, if the gas flow gas leakage is greater than the country When the leak amount allowed by the leak test standard value is determined, it is determined as abnormal gas gas leakage; (D) whether gas gas is supplied again: when it is located in the air passage 11, the gas chamber 13, the air outlet 12, and the pipeline of the safety valve 1 3 The gas pressure inside the gas detector for a period of time is detected by the pressure detector 4 in the safety valve 1 and the pressure value is less than a predetermined value or a detected value. When it is gradually smaller (ie, there is a leakage phenomenon), the control circuit board (not shown) will forcibly cut off the supply power (ie, micro current or micro voltage) required when the solenoid valve 2 is energized, and force the solenoid valve 2 The excitation action is not generated again (ie, the piston plate member 21 of the solenoid valve 2 can be surely blocked at the inlet of the air inlet 11 of the safety valve 1) to ensure that the gas cannot flow again from the intake passage 10 to the safety valve 1 After entering the air passage 11, the air chamber 13, the air outlet 12 and the inside of the pipeline 3, and forming a turning knob (not shown), the invalid operation of the fire can not be immediately ignited; when the air inlet 11 of the safety valve 1 is located, The pressure value of the gas gas in the gas chamber 13, the air outlet 12 and the pipeline 3 for a period of time passing through the pressure detector 4 in the safety valve 1 reaches a predetermined value or more and remains unchanged (ie, no leakage phenomenon) When the control circuit board (not shown) will continue to supply the supply power (i.e., micro current or micro voltage) required for the solenoid valve 2 to be energized, and force the solenoid valve 2 to generate the piston plate member 21 after the excitation operation. Can be surely opened (ie, the entrance of the piston plate 21 and the safety valve 1 into the air passage 11) Keeping open) to ensure that gas can flow from the intake passage 10 to the air inlet 11, the air chamber 13, the air outlet 12 and its line 3 of the safety valve 1 to facilitate turning the knob (not shown) ) The effective operation of igniting the fire immediately after the operation.

The safety leakage prevention control method of the present invention can supply the gas flow rate into the safety valve 1 by forcibly starting the electromagnetic valve 2 for a predetermined time by a control element (not shown) before each ignition of the fire. After entering the air passage 11, the air chamber 13, the air outlet 12, and the inside of the pipeline 3, the power supply required for the electromagnetic valve 2 to be energized is forcibly cut off, and the air inlet passage 11 of the safety valve 2 is discriminated by the detection of a certain time. Whether the pressure values inside the air chamber 13, the air outlet 12 and its pipeline 3 are maintained consistently, and as a basis for whether the solenoid valve 2 can be opened again to supply the gas flow rate, thus, whether it is the safety valve 1 before the ignition of the fire or its Inside the pipeline 3 is large In the case of leakage or small leakage, the gas supply source of the safety valve 1 can be completely and effectively cut off, so as to achieve the progressive effect of eliminating the carbon monoxide poisoning phenomenon and preventing the accidental risk of gas explosion.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention; therefore, any changes or modifications to the features and spirits described in the scope of the present application should include Within the scope of the patent application of this creation.

Claims (3)

A gas pipeline safety leakage prevention control method comprises at least: (A) forcibly supplying a gas flow rate for a predetermined time: before igniting the fire, the electromagnetic valve must be forced to start the electromagnetic valve for a predetermined time by the control element. The gas is filled through the intake passage to the inside of the safety valve and its pipeline; (B) the gas supply is forcibly cut off: the supply power required for the excitation of the solenoid valve is forcibly cut off, so that the solenoid valve does not have Excitation phenomenon, and the piston valve plate of the solenoid valve can be blocked at the inlet of the air inlet; (C) detecting and judging whether the gas is abnormally leaked: the gas is covered in the safety valve and its pipeline for a period of time, and the safety is utilized. The message detected by the pressure detector inside the valve is transmitted to the circuit board as a basis for judging whether there is abnormal gas leakage; (D) whether gas gas is supplied again: when the pressure detector in the safety valve is detected When the pressure value is less than the predetermined value or the detected value is gradually smaller (ie, there is a leakage phenomenon), it will ensure that the solenoid valve will not generate the excitation action again to ensure the gas gas. The method again flows into the safety valve and its pipeline; when the pressure value on the side of the pressure detector in the safety valve reaches a predetermined value or more and remains unchanged (ie, there is no leakage phenomenon), the solenoid valve can generate excitation again. Action to ensure that gas can flow back into the safety valve and its piping again; by the above method, it can be completely effective regardless of any large leakage or small leakage inside the safety valve before the ignition of the fire or its pipeline. The gas supply source of the safety valve is cut off to ensure that the carbon monoxide poisoning phenomenon and the accidental danger of preventing gas explosion are prevented. The gas pipeline safety leakage prevention control method according to claim 1, wherein the electromagnetic valve excitation refers to an air inlet passage of the piston plate member on which the piston plate member is moved by the suction force and away from the safety valve. The entrance to form an open state. For example, the gas pipeline safety leakage prevention control method described in claim 1 is characterized in that the piston plate member of the electromagnetic valve and the inlet port of the safety valve are normally closed.