CN116624628A - Novel automatic protection mechanism for household pipeline gas - Google Patents

Novel automatic protection mechanism for household pipeline gas Download PDF

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Publication number
CN116624628A
CN116624628A CN202310588606.0A CN202310588606A CN116624628A CN 116624628 A CN116624628 A CN 116624628A CN 202310588606 A CN202310588606 A CN 202310588606A CN 116624628 A CN116624628 A CN 116624628A
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CN
China
Prior art keywords
valve
closing valve
self
temperature self
pressure
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Granted
Application number
CN202310588606.0A
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Chinese (zh)
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CN116624628B (en
Inventor
王新建
肖江
李长贵
苗采坤
吴猛
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Baoding Qiansheng Electrical Technology Co ltd
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Baoding Qiansheng Electrical Technology Co ltd
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Publication of CN116624628B publication Critical patent/CN116624628B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K21/00—Fluid-delivery valves, e.g. self-closing valves
    • F16K21/04—Self-closing valves, i.e. closing automatically after operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/48—Mechanical actuating means actuated by mechanical timing-device, e.g. with dash-pot
    • F16K31/485—Mechanical actuating means actuated by mechanical timing-device, e.g. with dash-pot and specially adapted for gas valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

The invention discloses a novel automatic protection mechanism for household pipeline fuel gas, which belongs to the technical field of valves and has the technical key points that: including timing trip valve, high temperature self-closing valve and ball valve, still include: the timing shut-off valve comprises a shut-off valve air inlet end, a sealing valve, a timing button assembly, a pressure sensing diaphragm, a brake valve block, a flow channel and a diffusion pipe, wherein the shut-off valve air inlet end is connected with a gas pipeline air outlet end, the timing button assembly is connected with the sealing valve, the brake valve block is connected with the timing button assembly, the air outlet end is provided with the flow channel, and the flow channel is connected with the diffusion pipe; the pressure sensing diaphragm is used for sealing and isolating a high-pressure cavity and a low-pressure cavity at the top of the cut-off valve; and the high-temperature self-closing valve comprises a high-temperature self-closing valve body, an overflow valve and a self-closing valve rod assembly, the air outlet end of the timing shut-off valve is connected with the high-temperature self-closing valve body, the air outlet end of the high-temperature self-closing valve is connected with the ball valve inlet, and the high-temperature self-closing valve has the advantages of pure mechanical and physical properties, no electronic component and great improvement of the safety and reliability of the gas self-closing valve.

Description

Novel automatic protection mechanism for household pipeline gas
Technical Field
The invention relates to the technical field of valves, in particular to a novel automatic protection mechanism for household pipeline fuel gas.
Background
The self-closing valve for household pipeline is mainly installed between the gas outlet end of the gas pipeline and the gas stove and is used for protecting the safety of indoor gas pipeline. The pressure abnormality or leakage and other conditions of the household gas pipeline can occur in the use process, and the gas self-closing valve actively cuts off a channel between the gas pipeline and the gas stove when the abnormality occurs, so that the household gas pipeline is usually used again after the abnormality is eliminated, and the household gas pipeline needs to be manually opened to ensure that the indoor environment is safe.
The main stream gas self-closing valve in the market at present can be automatically triggered to close under the conditions of abnormal pressure and abnormal flow through a mechanical structure. Or by adding an electronic alarm (usually a gas sensor) to detect micro-leakage, and actively alarming to manually close the valve. These two products have mainly the following disadvantages:
1) The existing mechanical structure can only cut off the valve through pressure abnormal action under the condition of large leakage, and is difficult to detect abnormal conditions of micro leakage and high temperature.
2) The electronic alarm self-closing valve can only play a role in alarming when leakage occurs, and can not automatically close the valve, so that potential safety hazards of gas utilization exist.
3) The electronic alarm structure depends on electric energy, and has poor reliability and high explosion-proof level requirement. Is not suitable for mass popularization and use.
Currently, mechanical self-closing valves capable of simultaneously solving various abnormal conditions are not available in the market at present. Accordingly, there is a need to provide a new household plumbing gas auto-protection mechanism system that addresses the above-described issues.
Disclosure of Invention
Aiming at the defects existing in the prior art, the embodiment of the invention aims to provide a novel automatic protection mechanism for household pipeline gas, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a novel automatic protection mechanism of domestic pipeline gas, includes timing trip valve, high temperature self-closing valve and ball valve, still includes:
the timing shut-off valve comprises a shut-off valve air inlet end, a sealing valve, a timing button assembly, a pressure sensing diaphragm, a brake valve block, a flow channel and a diffusion pipe, wherein the shut-off valve air inlet end is mechanically connected with a gas pipeline air outlet end, the timing button assembly is connected with the sealing valve, the brake valve block is connected with the timing button assembly, the air outlet end is provided with the flow channel, and the flow channel is connected with the diffusion pipe; the pressure sensing diaphragm is used for sealing and isolating a high-pressure cavity and a low-pressure cavity at the top of the cut-off valve; and
the high-temperature self-closing valve comprises a high-temperature self-closing valve body, an overflow valve and a self-closing valve rod assembly, wherein the air outlet end of the timing shut-off valve is connected with the high-temperature self-closing valve body, and the air outlet end of the high-temperature self-closing valve is connected with the ball valve inlet.
As a further scheme of the invention, the timing button assembly comprises a timer gear, a fish-mouth wheel, a push rod and a timer reset spring, wherein the timer gear comprises an escapement mechanism, the timer reset spring is connected with the sealing valve, the timer gear is connected with a brake valve block, and the timer reset spring is connected with the timer gear through the fish-mouth wheel.
As a further scheme of the invention, the pressure sensing diaphragm comprises a high-pressure cavity and a low-pressure cavity, and divides the flow channel into a high-pressure cavity and a low-pressure cavity which are independent and sealed.
As a further scheme of the invention, the high-temperature self-closing valve body comprises a high-temperature self-closing valve air inlet pipe and a ball valve air outlet pipe, the ball valve air outlet pipe is connected with the ball valve, and the timing shut-off valve is connected with the high-temperature self-closing valve air inlet pipe.
As a further scheme of the invention, the self-closing valve rod assembly comprises a cover valve rod, a reset cover, a valve rod, a pressure stabilizing spring, a self-closing valve upper cover, a corrugated ring, a temperature sensing magnet, a sealing gasket, a pressure spring and a permanent magnet, wherein the cover valve rod is connected with the reset cover, the valve rod is arranged in the reset cover, the pressure stabilizing spring is arranged on the outer side of the valve rod, the self-closing valve upper cover is connected with the reset cover, the corrugated ring and the temperature sensing magnet are connected with the valve rod, the sealing gasket is connected with the permanent magnet through the pressure spring, and the pressure spring pushes the permanent magnet to be abutted against the valve body of the high-temperature self-closing valve.
In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:
(1) The pure mechanical and physical type valve has no electronic component, and the safety and reliability of the gas self-closing valve are greatly improved.
(2) The high temperature and micro-leakage automatic closing of the self-closing valve can be realized within a certain range, and the potential safety hazards of fire and gas leakage are effectively eliminated.
In order to more clearly illustrate the structural features and efficacy of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic diagram of an automatic protection system according to an embodiment of the invention.
Fig. 2 is a cross-sectional view of the structure of the automatic protection system in the embodiment of the invention.
FIG. 3 is a cross-sectional view of a high temperature self-closing valve and ball valve assembly in an embodiment of the invention.
Fig. 4 is a cross-sectional view of a timed cutoff valve assembly in an embodiment of the invention.
Reference numerals: 1-timing shut-off valve, 11-shut-off valve air inlet end, 12-sealing valve, 13-timing button assembly, 131-timer gear, 132-fishmouth wheel, 133-push rod, 134-timer reset spring, 14-pressure sensing diaphragm, 141-high pressure cavity, 142-low pressure cavity, 15-brake valve block, 16-runner, 17-diffuser pipe, 2-high temperature self-closing valve, 21-high temperature self-closing valve body, 211-high temperature self-closing valve air inlet pipe, 212-ball valve air outlet pipe, 22-overflow valve, 23-self-closing valve stem assembly, 231-warning cover valve stem, 232-reset cover, 233-valve stem, 234-pressure stabilizing spring, 235-self-closing valve upper cover, 236-ripple ring, 237-temperature sensing magnet, 238-sealing gasket, 239-pressure spring, 2310-permanent magnet, 3-ball valve.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
In one embodiment, a novel household pipeline gas automatic protection mechanism, see fig. 1-4, comprises a timing cut-off valve 1, a high-temperature self-closing valve 2 and a ball valve 3, and further comprises:
the timing shut-off valve 1 comprises a shut-off valve air inlet end 11, a sealing valve 12, a timing button assembly 13, a pressure sensing diaphragm 14, a brake valve block 15, a flow channel 16 and a diffuser pipe 17, wherein the shut-off valve air inlet end 11 is mechanically connected with a gas pipeline air outlet end, the timing button assembly 13 is connected with the sealing valve 12, the brake valve block 15 is connected with the timing button assembly 13, the gas pipeline air outlet end is provided with the flow channel 16, and the flow channel 16 is connected with the diffuser pipe 17; the pressure sensing diaphragm 14 is used for sealing and isolating a high-pressure cavity and a low-pressure cavity at the top of the cut-off valve; and
the high-temperature self-closing valve 2 comprises a high-temperature self-closing valve body 21, an overflow valve 22 and a self-closing valve rod assembly 23, the air outlet end of the timing shut-off valve 1 is connected with the high-temperature self-closing valve body 21, and the air outlet end of the high-temperature self-closing valve 2 is connected with the inlet of the ball valve 3.
Further, referring to fig. 1 to 4, the timing button assembly 13 includes a timer gear 131, a fishmouth wheel 132, a push rod 133, and a timer return spring 134, the timer gear 131 includes an escapement mechanism, the timer return spring 134 is connected to the sealing valve 12, the timer gear 131 is connected to the brake valve block 15, and the timer return spring 134 is connected to the timer gear 131 through the fishmouth wheel 132.
Further, referring to fig. 1 to 4, the pressure sensing diaphragm 14 includes a high pressure chamber 141 and a low pressure chamber 142, and the pressure sensing diaphragm 14 divides the flow channel 16 into two independent sealed chambers, namely the high pressure chamber 141 and the low pressure chamber 142.
Further, referring to fig. 1 to 4, the high temperature self-closing valve body 21 includes a high temperature self-closing valve inlet pipe 211 and a ball valve outlet pipe 212, the ball valve outlet pipe 212 is connected to the ball valve 3, and the timing shut-off valve 1 is connected to the high temperature self-closing valve inlet pipe 211.
Further, referring to fig. 1 to 4, the self-closing valve stem assembly 23 includes a cover stem 231, a reset cover 232, a stem 233, a pressure stabilizing spring 234, a self-closing valve upper cover 235, a corrugated ring 236, a temperature sensing magnet 237, a sealing gasket 238, a pressure spring 239 and a permanent magnet 2310, the cover stem 231 is connected with the reset cover 232, the stem 233 is disposed in the reset cover 232, the pressure stabilizing spring 234 is disposed outside the stem 233, the self-closing valve upper cover 235 is connected with the reset cover 232, the corrugated ring 236 and the temperature sensing magnet 237 are connected with the stem 233, the sealing gasket 238 is connected with the permanent magnet 2310 through the pressure spring 239, and the pressure spring 239 pushes the permanent magnet 2310 to be abutted against the high-temperature self-closing valve body 21.
In this embodiment, the air inlet end 11 of the timing shut-off valve 1 is in threaded connection with the air outlet end of the gas pipeline, the air outlet end of the shut-off valve 1 is in threaded connection with the air inlet end 211 of the high-temperature self-closing valve 2, the air outlet end of the high-temperature self-closing valve 2 is connected with the inlet of the gas pipeline ball valve 3, and the outlet thread 212 of the gas pipeline ball valve is connected with the air inlet pipeline of the gas stove.
The principle of action is as shown in fig. 3 and 4, after the installation of the mechanism system is completed, when the pipeline gas self-closing valve is started, the timing button assembly of the timing cut-off valve is firstly pressed down, and then the reset cover 232 of the high-temperature self-closing valve 2 is manually lifted up. The timer button assembly is pressed down, the timer is started at fixed time, and meanwhile, the push rod 133 moves downwards to drive the sealing valve block 12 to move downwards, and the valve port of the air outlet end of the opening timing cut-off valve is connected with the high-temperature self-closing valve. And the reset cover of the self-closing valve 2 is in threaded connection with the self-closing valve rod assembly 23, the reset cover moves upwards to drive the self-closing valve rod assembly 23 to move upwards, the permanent magnet 2310 on the valve rod is separated from the high-temperature self-closing valve body 21, and the valve port is opened. At this time, the gas in the pipe is introduced from the gas inlet end of the shutoff valve 1, and enters the high-temperature self-closing valve 2 through the overcurrent valve 22. And then the gas is discharged from the gas outlet end of the self-closing valve 2, and is connected with the gas stove through the ball valve 3 and the screw thread 212 of the gas outlet end.
Embodiment one:
referring to fig. 3, the present embodiment is a working principle of the automatic protection device for pipeline gas under high pressure.
When the gas pressure in the pipeline is too high, the corrugated ring 236 moves upwards to drive the valve rod 233 to move upwards, the temperature sensing magnet 237 is separated from the sealing gasket 238, the pressure spring 239 pushes the permanent magnet 2310 to be abutted with the high-temperature self-closing valve body 21, and the gas is closed, so that the warning cover 231 is at the topmost position.
Example 2:
referring to fig. 3, the present embodiment is a working principle of the automatic protection device for pipeline gas under the condition of under-pressure.
When the pressure of the fuel gas in the pipeline is too low, the corrugated ring 236 moves downwards to drive the valve rod 233 to move downwards, the temperature sensing magnet 237 is separated from the sealing gasket 238, the pressure spring 239 pushes the permanent magnet 2310 to be abutted with the high-temperature self-closing valve body 21, the fuel gas is closed, and the warning cover 231 is at the bottommost position.
Example 3:
referring to fig. 3, the present embodiment is a working principle of the automatic protection device for pipeline gas under the condition of overcurrent.
When the gas pipe at the rear end of the automatic pipeline gas protection mechanism is damaged or falls off greatly, the overflow valve 22 is closed instantaneously, a relative sealing cavity is formed at the rear end of the overflow valve 22, the leakage at the moment causes pressure reduction, the corrugated ring 236 moves downwards to drive the valve rod 233 to move downwards, the temperature sensing magnet 237 is separated from the sealing gasket 238, the pressure spring 239 pushes the permanent magnet 2310 to abut against the high-temperature self-closing valve body 21, and the gas is closed, so that the warning cover 231 is at the bottommost position.
Example 4:
referring to fig. 3, the present embodiment is a working principle of the automatic protection device for pipeline gas under high temperature.
When the high temperature caused by a fire disaster or other reasons in the room reaches a preset value, the magnetic force of the temperature sensing magnet 237 disappears, the pressure spring 239 pushes the permanent magnet 2310 to be abutted against the high temperature self-closing valve body 21, the fuel gas is closed, and meanwhile the corrugated ring 236 moves upwards to drive the valve rod 233 to move upwards, and the warning cover 231 is at the topmost position.
Fifth embodiment:
referring to fig. 2 and 4, the present embodiment is a working principle of an automatic protection device for pipeline gas under the condition of micro leakage.
Referring to fig. 2, before a user first opens the gas range to cook, the timer cut-off valve button 13 is opened, and then the gas range is opened to ignite for normal use. At this time, after the timer button is pressed, the timer is started in a countdown timing (for example, 14 minutes is set), at this time, the push rod 133 is pushed out from the fishmouth wheel 132 of the timer under the movement of the timing rack and the timing gear 131, so as to drive the sealing valve 12 to move downwards, the air outlet valve port is opened, and the fuel gas enters the valve body flow channel 16 and the diffuser pipe 17 from the inlet end 11 and flows with the gas stove through the high-temperature self-closing valve. Because the fuel gas has a certain flow rate, when the fuel gas passes through the valve body flow channel 16 with a special structure, the pressure of the fuel gas is reduced, and two independent sealing cavity high-pressure cavities 141 and low-pressure cavities 142 are formed under the action of the pressure sensing diaphragm 14. The pressure difference rapidly pushes the dynamic pressure diaphragm to move to the low-pressure cavity 142, the brake valve block 15 is driven to tightly press the director gear 131, the director gear 131 is prevented from rotating, the movement of the timer is stopped, and the countdown is stopped.
When the gas stove is out of use, the ignition end of the gas stove is closed, and the gas pipeline has no gas flow (static state). At this time, the pressure of the high-pressure cavity and the pressure of the low-pressure cavity of the timer are balanced (no pressure difference), the pressure sensing diaphragm is reset, the brake valve block 15 is driven to reset, the timer gear starts to operate, and the timer is restarted by timing countdown. After the set countdown (for example, 14 minutes) is finished, the push rod 133 reaches the position of the fishmouth wheel 132 of the timer, at this time, under the action of the reset spring 133 of the timer, the push rod 133 moves upwards to be tightly fixed in the fishmouth wheel 132 to drive the sealing valve block 12 to move upwards, the air outlet valve port is closed again, and the gas pipeline is sealed automatically. If leakage (such as extremely small damage or sealing leakage) occurs in the gas pipeline, the pressure in the pipeline is further reduced, the high-temperature self-closing valve is closed under pressure, and the whole gas pipeline achieves the protection effect of double closing. Under this state, the user will not be able to open the burner at the next start timing stop valve, has clear warning effect of revealing to the user. The gas safety of the user is greatly ensured.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (5)

1. The utility model provides a novel automatic protection mechanism of domestic pipeline gas, includes timing trip valve, high temperature self-closing valve and ball valve, its characterized in that still includes:
the timing shut-off valve comprises a shut-off valve air inlet end, a sealing valve, a timing button assembly, a pressure sensing diaphragm, a brake valve block, a flow channel and a diffusion pipe, wherein the shut-off valve air inlet end is mechanically connected with a gas pipeline air outlet end, the timing button assembly is connected with the sealing valve, the brake valve block is connected with the timing button assembly, the gas pipeline air outlet end is provided with the flow channel, and the flow channel is connected with the diffusion pipe; the pressure sensing diaphragm is used for sealing and isolating a high-pressure cavity and a low-pressure cavity at the top of the cut-off valve; and
the high-temperature self-closing valve comprises a high-temperature self-closing valve body, an overflow valve and a self-closing valve rod assembly, wherein the air outlet end of the timing shut-off valve is connected with the high-temperature self-closing valve body, and the air outlet end of the high-temperature self-closing valve is connected with the ball valve inlet.
2. The novel household plumbing gas automatic protection mechanism of claim 1, wherein the timing button assembly comprises a timer gear, a fish-mouth wheel, a push rod, and a timer return spring, the timer gear comprises an escapement, the timer return spring is connected to the sealing valve, the timer gear is connected to a brake valve block, and the timer return spring is connected to the timer gear through the fish-mouth wheel.
3. The novel automatic household pipeline gas protection mechanism according to claim 2, wherein the pressure sensing diaphragm comprises a high pressure cavity and a low pressure cavity, and the pressure sensing diaphragm divides the flow passage into two independent sealed cavities, namely the high pressure cavity and the low pressure cavity.
4. The novel automatic household pipeline gas protection mechanism according to claim 1, wherein the high-temperature self-closing valve body comprises a high-temperature self-closing valve air inlet pipe and a ball valve air outlet pipe, the ball valve air outlet pipe is connected with the ball valve, and the timing shut-off valve is connected with the high-temperature self-closing valve air inlet pipe.
5. The novel automatic protection mechanism for household pipeline gas according to claim 4, wherein the valve rod assembly of the self-closing valve comprises a cover valve rod, a reset cover, a valve rod, a pressure stabilizing spring, an upper cover of the self-closing valve, a corrugated ring, a temperature sensing magnet, a sealing gasket, a pressure spring and a permanent magnet, wherein the cover valve rod is connected with the reset cover, the valve rod is arranged in the reset cover, the pressure stabilizing spring is arranged outside the valve rod, the upper cover of the self-closing valve is connected with the reset cover, the corrugated ring and the temperature sensing magnet are connected with the valve rod, the sealing gasket is connected with the permanent magnet through the pressure spring, and the pressure spring pushes the permanent magnet to be abutted with the valve body of the high-temperature self-closing valve.
CN202310588606.0A 2023-05-24 2023-05-24 Novel automatic protection mechanism for household pipeline gas Active CN116624628B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003074727A (en) * 2001-08-30 2003-03-12 Iwao Ishikawa Timer interrupting device for gas tap, and earthquake perceptive cut off device
CN107101027A (en) * 2017-06-20 2017-08-29 广州凯亨阀门有限公司 A kind of magnetic coordinated type self-closing valve
CN108869822A (en) * 2018-07-17 2018-11-23 衢州市信和财务咨询服务有限公司 The stop valve that timing is closed when less than certain flow
CN110388502A (en) * 2019-08-26 2019-10-29 罗旭 The anti-scald valve of temperature-sensitive
CN211976009U (en) * 2019-12-18 2020-11-20 张赢尹 High-temperature self-melting cut-off type gas pipeline self-closing valve
CN217683421U (en) * 2022-06-01 2022-10-28 河北彬森燃气设备有限公司 Action executing piece for gas pipeline self-closing valve
CN218913782U (en) * 2022-08-25 2023-04-25 云南振楠科技有限公司 Multifunctional household pipeline gas timing cut-off valve
CN116146758A (en) * 2022-09-07 2023-05-23 陕西大唐燃气安全科技股份有限公司 Gas self-closing valve and gas equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003074727A (en) * 2001-08-30 2003-03-12 Iwao Ishikawa Timer interrupting device for gas tap, and earthquake perceptive cut off device
CN107101027A (en) * 2017-06-20 2017-08-29 广州凯亨阀门有限公司 A kind of magnetic coordinated type self-closing valve
CN108869822A (en) * 2018-07-17 2018-11-23 衢州市信和财务咨询服务有限公司 The stop valve that timing is closed when less than certain flow
CN110388502A (en) * 2019-08-26 2019-10-29 罗旭 The anti-scald valve of temperature-sensitive
CN211976009U (en) * 2019-12-18 2020-11-20 张赢尹 High-temperature self-melting cut-off type gas pipeline self-closing valve
CN217683421U (en) * 2022-06-01 2022-10-28 河北彬森燃气设备有限公司 Action executing piece for gas pipeline self-closing valve
CN218913782U (en) * 2022-08-25 2023-04-25 云南振楠科技有限公司 Multifunctional household pipeline gas timing cut-off valve
CN116146758A (en) * 2022-09-07 2023-05-23 陕西大唐燃气安全科技股份有限公司 Gas self-closing valve and gas equipment

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