CN112780956A - Automatic alarm leakage-proof device for household natural gas pipe - Google Patents

Automatic alarm leakage-proof device for household natural gas pipe Download PDF

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Publication number
CN112780956A
CN112780956A CN202110112299.XA CN202110112299A CN112780956A CN 112780956 A CN112780956 A CN 112780956A CN 202110112299 A CN202110112299 A CN 202110112299A CN 112780956 A CN112780956 A CN 112780956A
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China
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pipe
natural gas
gas
early warning
fixedly connected
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CN202110112299.XA
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CN112780956B (en
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赵付舟
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Changshu Institute of Technology
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Changshu Institute of Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00Protection or supervision of installations
    • F17D5/02Preventing, monitoring, or locating loss
    • F17D5/06Preventing, monitoring, or locating loss using electric or acoustic means

Abstract

The invention discloses an automatic alarm and leakage prevention device for a household natural gas pipe, which comprises a natural gas main pipeline, a natural gas main valve, a gas meter, a natural gas branch valve and a second connecting pipe, wherein the natural gas main pipeline is fixedly provided with the natural gas main valve; through being provided with first early warning cover body for the prevention that gas meter and natural gas main line contact department can be fine is revealed, and can accomplish automatic shutoff function, avoids the natural gas to reveal, prevents the emergence of calamity.

Description

Automatic alarm leakage-proof device for household natural gas pipe
Technical Field
The invention relates to the field of natural gas pipelines, in particular to an automatic alarm and leakage prevention device for a household natural gas pipe.
Background
Natural gas refers to all gases naturally occurring in nature, including gases formed by various natural processes in the air space, water space and rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like).
Natural gas is one of the safer fuel gases, does not contain carbon monoxide, is lighter than air, immediately diffuses upwards once leaked, is not easy to accumulate to form explosive gas, and has higher safety than other fuel gases.
The natural gas is adopted as energy, so that the consumption of coal and petroleum can be reduced, and the environmental pollution can be obviously reduced; as a clean energy, the natural gas can reduce the discharge of sulfur dioxide and dust by nearly 100 percent, reduce the discharge of carbon dioxide by 60 percent and reduce the discharge of nitrogen oxide by 50 percent, is favorable for reducing the formation of acid rain, slows down the global greenhouse effect and can fundamentally improve the environmental quality.
Compared with artificial gas, the natural gas has equivalent heat value price compared with the artificial gas, is clean and clean, can prolong the service life of the cooker, and is also beneficial to reducing the maintenance cost of users.
The existing indoor natural gas pipelines are connected in a sealing welding mode or a threaded connection mode, the problem of leakage is easy to occur under the condition of long service life, the problem caused by natural gas leakage is gradually increased in recent years, regular or irregular detection is one of effective means for avoiding other undesirable problems caused by natural gas leakage, but detection is mainly carried out by a detection probe used by a toll collector for detecting the natural gas leakage, the time of the toll collector for detecting the natural gas leakage is usually several months away, the effect of timely finding the problem is not ideal, and the detection effect is difficult to achieve expectation, so that the natural gas alarm leakage prevention device capable of timely and automatically alarming when the natural gas leakage occurs has positive significance, and the technical scheme to be introduced below is generated under the background.
Disclosure of Invention
In order to solve the existing problems, the invention provides an automatic alarm and leakage prevention device for a household natural gas pipe.
The invention is realized by the following technical scheme.
A household natural gas pipe automatic alarm leakage-proof device comprises a natural gas main pipe, a natural gas main valve, a gas meter, a natural gas branch valve and a second connecting pipe, wherein the natural gas main pipe is fixedly provided with the natural gas main valve, the bottom end of the natural gas main valve is fixedly provided with a gas meter outlet pipe and a gas meter inlet pipe, the bottom end of the gas meter is fixedly connected with a first early warning cover body, two first sealing plugs are respectively inserted into two sides of the top end of the first early warning cover body, the gas meter outlet pipe and the gas meter inlet pipe are respectively inserted into the two first sealing plugs in a laminating manner, two second sealing plugs are respectively inserted into two sides of the bottom end of the first early warning cover body, the natural gas main pipe and the first connecting pipe are respectively inserted into the two second sealing plugs in a laminating manner, the top end of the natural gas main pipe is fixedly connected and communicated with the bottom end of the gas meter inlet, the natural gas main pipeline and the first connecting pipe are respectively jointed and sleeved with rubber sleeves, a movable plate is arranged in the first early warning cover body, the natural gas main pipeline and the first connecting pipe respectively penetrate through the movable plate and are jointed and slidably connected with the movable plate, one ends of the two rubber sleeves are respectively fixedly connected with one side of the movable plate, a first detection probe is fixedly mounted on the inner wall of one side of the first early warning cover body, the first early warning cover body is divided into an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through bolts, plug connectors are respectively fixedly mounted at four corners on the inner bottom surface of the lower shell, bolts are respectively screwed at four corners at the top end of the upper shell, an electric telescopic rod is fixedly mounted on the inner wall of one side of the lower shell, the output end of the electric telescopic rod is fixedly connected with one side of the movable plate, the electric telescopic, the gas meter gas outlet pipe and the gas meter gas inlet pipe respectively penetrate through the corresponding sealing sleeve and are in sliding connection with the sealing sleeve, the gas meter gas outlet pipe and the gas meter gas inlet pipe are respectively jointed and sleeved with two fixing rings, the outer wall of each fixing ring is respectively and fixedly connected with the inner wall of the corresponding sealing sleeve, one side of each fixing ring is fixedly provided with the fixing ring, one side of the gas meter is provided with a controller, the controller is fixedly arranged on a wall, a pre-warning lamp is fixedly arranged on the controller, a control panel is arranged on the controller, an alarm is arranged on the controller, a second detection probe is fixedly arranged on the controller, the other end of the first connecting pipe is fixedly connected with an installation pipe, the other end of the installation pipe is fixedly connected with a second connecting pipe, a natural gas distributing valve is fixedly arranged on the installation pipe, and two connecting blocks are respectively and fixedly arranged on two, a rotary rod is arranged between the two connecting blocks, two ends of the rotary rod respectively penetrate through the two connecting blocks and are rotationally connected with the two connecting blocks, a handle is fixedly arranged on the rotary rod, threaded rods are respectively fixedly arranged at two ends of the rotary rod, the other ends of the two threaded rods are respectively screwed with threaded sleeves, the top end of one side of each threaded sleeve is fixedly connected with a lantern ring, the two lantern rings are respectively sleeved on the second connecting pipe and the first connecting pipe and are respectively connected with a joint in a sliding manner, an extrusion rubber ring is fixedly connected with one side of each lantern ring, two second early warning cover bodies are respectively and fixedly arranged at two sides of the mounting pipe, the two second early warning cover bodies are respectively jointed and sleeved on the second connecting pipe and the first connecting pipe in a jointing manner, the two second early warning cover bodies are respectively and fixedly connected with the first connecting pipe, and a first sealing, the other ends of the two second early warning cover bodies are fixedly connected with conical rings respectively, the conical parts of the conical rings are fixedly provided with circular rings, the circular rings are arranged opposite to corresponding extrusion rubber rings, the top end of each second early warning cover body is fixedly inserted with a gas flow cover, the joint of the bottom end of each gas flow cover body and the second early warning cover body is fixedly provided with a sealing gasket, the top end of one gas flow cover is fixedly connected with an exhaust pipe, the inner wall of the exhaust pipe is fixedly provided with a third detection probe, the top end of the exhaust pipe is screwed with a sealing cover, the gas flow cover is in a ring shape, a fixing ring is fixedly connected between the annular inner walls of the gas flow cover body, the fixing ring is sleeved on the natural gas branch valve and is in rotary connection with the natural gas branch valve, the rotary joint of the fixing ring and the natural gas branch valve is fixedly provided with a second sealing, the two through holes are respectively communicated with the region from the bottom end of the fixing ring to the top end of the mounting tube.
Preferably, the first detection probe, the second detection probe and the third detection probe are electrically connected with the control panel through lines.
Preferably, the second early warning cover body and the gas circulation cover are both made of hard alloy materials.
Preferably, the thickness of the rubber sleeve is 2-3mm greater than that of the fixing ring.
Preferably, the electric telescopic rod is electrically connected with the control panel through a circuit.
Preferably, the controller is electrically connected with an external power supply through a circuit.
Compared with the prior art, the invention has the beneficial effects that: according to the natural gas distribution valve, the second early warning cover body and the gas circulation cover are arranged, so that leakage can be effectively prevented at the position of the natural gas distribution valve, an automatic warning function can be completed, and greater danger is avoided; through being provided with first early warning cover body for the prevention that gas meter and natural gas main line contact department can be fine is revealed, and can accomplish automatic shutoff function, avoids the natural gas to reveal, prevents the emergence of calamity.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a schematic diagram of the controller of fig. 1.
Fig. 3 is a block diagram of the first early warning cover of fig. 1.
Fig. 4 is a block diagram of the second early warning cover of fig. 1.
Fig. 5 is an enlarged view of a portion a of fig. 4.
Fig. 6 is an enlarged view of a portion B of fig. 4.
Fig. 7 is a schematic diagram of the operation of the second early warning cover in fig. 1.
Fig. 8 is a schematic diagram of the operation of the first early warning cover in fig. 1.
In the figure: the gas meter early warning device comprises a natural gas main pipeline 1, a natural gas main valve 2, a gas meter 3, a first early warning cover body 4, a first sealing plug 4-1, a second sealing plug 4-2, a gas meter gas outlet pipe 4-3, a gas meter gas inlet pipe 4-4, a first connecting pipe 4-5, a plug connector 4-6, a first detection probe 4-7, a sealing sleeve 4-8, a fixing ring 4-9, an annular sealing element 4-10, a rubber sleeve 4-11, a moving plate 4-12, an electric telescopic rod 4-13, a controller 5, an early warning lamp 5-1, an alarm 5-2, a control panel 5-3, a second detection probe 5-4, a second early warning cover body 6, a gas circulation cover 6-1, an exhaust pipe 6-2, a third detection probe 6-3, a sealing cover 6-4, a gas outlet pipe 6-2, 6-5 parts of through holes, 6-6 parts of sealing gaskets, 6-7 parts of first sealing rings, 6-8 parts of mounting pipes, 6-9 parts of connecting blocks, 6-10 parts of rotating rods, 6-11 parts of handles, 6-12 parts of threaded rods, 6-13 parts of threaded sleeves, 6-14 parts of conical rings, 6-15 parts of circular rings, 6-16 parts of lantern rings, 6-17 parts of extrusion rubber rings, 6-18 parts of fixing rings, 6-19 parts of second sealing rings, 7 parts of natural gas distribution valves and 8 parts of second connecting pipes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the automatic alarm and leakage-proof device for the household natural gas pipe comprises a natural gas main pipe 1, a natural gas main valve 2, a gas meter 3, a natural gas branch valve 7 and a second connecting pipe 8, wherein the natural gas main pipe 1 is fixedly provided with the natural gas main valve 2, the bottom end of the natural gas main valve 2 is fixedly provided with a gas meter outlet pipe 4-3 and a gas meter inlet pipe 4-4, the bottom end of the gas meter 3 is fixedly connected with a first early warning cover body 4, two first sealing plugs 4-1 are respectively inserted into two sides of the top end of the first early warning cover body 4, the gas meter outlet pipe 4-3 and the gas meter inlet pipe 4-4 are respectively inserted into the two first sealing plugs 4-1, two second sealing plugs 4-2 are respectively inserted into two sides of the bottom end of the first early warning cover body 4, a natural gas main pipeline 1 and a first connecting pipe 4-5 are respectively inserted into two second sealing plugs 4-2 in a joint manner, the top end of the natural gas main pipeline 1 is fixedly connected and communicated with the bottom end of a gas meter inlet pipe 4-4, the bottom end of a gas meter outlet pipe 4-3 is fixedly connected and communicated with the top end of the first connecting pipe 4-5, rubber sleeves 4-11 are respectively sleeved on the natural gas main pipeline 1 and the first connecting pipe 4-5 in a joint manner, a moving plate 4-12 is arranged in a first early warning cover body 4, the natural gas main pipeline 1 and the first connecting pipe 4-5 respectively penetrate through the moving plate 4-12 and are in joint sliding connection with the moving plate, one end of each of the two rubber sleeves 4-11 is respectively fixedly connected with one side of the moving plate 4-12, and a first detection probe 4-7 is fixedly installed on the inner wall of one side, the first early warning cover body 4 is divided into an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through bolts, four corners of the inner bottom surface of the lower shell are respectively and fixedly provided with plug connectors 4-6, four corners of the top end of the upper shell are respectively screwed with bolts, the inner wall of one side of the lower shell is fixedly provided with an electric telescopic rod 4-13, the output end of the electric telescopic rod 4-13 is fixedly connected with one side of a movable plate 4-12, the electric telescopic rod 4-13 is arranged between two rubber sleeves 4-11, the inner wall of one side of the lower shell is respectively and fixedly provided with a sealing sleeve 4-8, a gas meter outlet pipe 4-3 and a gas meter inlet pipe 4-4 respectively penetrate through the corresponding sealing sleeve 4-8 and are in sliding connection with the sealing sleeve, and two fixing rings 4-9 are respectively jointed and sleeved on the gas meter outlet pipe 4, the outer wall of each fixing ring 4-9 is fixedly connected with the inner wall of a corresponding sealing sleeve 4-8, one side of each fixing ring 4-9 is fixedly provided with a fixing ring 4-9, one side of the gas meter 3 is provided with a controller 5, the controller 5 is fixedly arranged on the wall, the controller 5 is fixedly provided with a pre-warning lamp 5-1, the controller 5 is provided with a control panel 5-3, the controller 5 is provided with an alarm 5-2, the controller 5 is fixedly provided with a second detection probe 5-4, the other end of the first connecting pipe 4-5 is fixedly connected with a mounting pipe 6-8, the other end of the mounting pipe 6-8 is fixedly connected with a second connecting pipe 8, and the mounting pipe 6-8 is fixedly provided with a natural gas distributing valve 7, two connecting blocks 6-9 are respectively and fixedly installed on two sides of the bottom end of the installation pipe 6-8, a rotating rod 6-10 is arranged between the two connecting blocks 6-9, two ends of the rotating rod 6-10 respectively penetrate through the two connecting blocks 6-9 and are in rotating connection with the two connecting blocks, a handle 6-11 is fixedly installed on the rotating rod 6-10, threaded rods 6-12 are respectively and fixedly installed on two ends of the rotating rod 6-10, threaded sleeves 6-13 are respectively screwed at the other ends of the two threaded rods 6-12, a lantern ring 6-16 is fixedly connected to the top end of one side of each threaded sleeve 6-13, two lantern rings 6-16 are respectively sleeved on the second connecting pipe 8 and the first connecting pipe 4-5 and are respectively in sliding connection with the joint, and an extrusion rubber ring 6-17 is fixedly connected to one side of each lantern ring, two second early warning cover bodies 6 are fixedly installed on two sides of the installation pipe 6-8 respectively, the two second early warning cover bodies 6 are respectively jointed and sleeved on the second connecting pipe 8 and the first connecting pipe 4-5, the two second early warning cover bodies 6 are respectively fixedly connected with the first connecting pipe 4-5 through the second connecting pipe 8, a first sealing ring 6-7 is fixedly embedded on the inner wall of each second early warning cover body 6, the other ends of the two second early warning cover bodies 6 are respectively fixedly connected with a conical ring 6-14, a circular ring 6-15 is fixedly installed at the conical part of each conical ring 6-14, the circular ring 6-15 is arranged opposite to a corresponding extrusion rubber ring 6-17, a gas circulation cover 6-1 is fixedly inserted at the top end of each second early warning cover body 6, and a sealing gasket 6-6 is fixedly arranged at the joint of the bottom end of each gas circulation cover 6-1 and the second early warning cover body 6, the top end of one of the gas flow covers 6-1 is fixedly connected with an exhaust pipe 6-2, the inner wall of the exhaust pipe 6-2 is fixedly provided with a third detection probe 6-3, the top end of the exhaust pipe 6-2 is screwed with a sealing cover 6-4, the gas circulation cover 6-1 is in a ring shape, a fixing ring 6-18 is fixedly connected between the annular inner walls of the gas circulation covers 6-1, the fixing rings 6 to 18 are sleeved on the natural gas distributing valve 7 and are rotationally connected with the natural gas distributing valve 7, the rotational connection positions of the fixing rings 6 to 18 and the natural gas distributing valve 7 are fixedly provided with second sealing rings 6 to 19, the annular inner wall of the gas circulation cover 6-1 is provided with two through holes 6-5 respectively, and the two through holes 6-5 are communicated with the region from the bottom end of the fixing ring 6-18 to the top end of the mounting pipe 6-8 respectively.
The first detection probe 4-7, the second detection probe 5-4 and the third detection probe 6-3 are electrically connected with the control panel 5-3 through circuits.
The second early warning cover body 6 and the gas circulation cover 6-1 are both made of hard alloy materials.
The thickness of the rubber sleeve 4-11 is 2-3mm greater than that of the fixing ring 4-9.
The electric telescopic rods 4-13 are electrically connected with the control panel 5-3 through a circuit.
The controller 5 is electrically connected with an external power supply through a circuit.
The working principle is as follows: when the device needs to be used, the device is firstly installed, after the installation is finished, the device is in a state as shown in the attached drawing 1 as a whole, then the device is powered on, the device can be normally used, in the using process, the natural gas main valve 2 and the natural gas branch valve 7 are opened, the natural gas can be normally used, when the natural gas leaks in the using process, the natural gas generally leaks at the connecting position of a pipeline, and two pipeline connecting points exist in the device.
One point is the natural gas distributing valve 7, when leakage occurs at the position, the gas leaks from the joint of the first connecting pipe 4-5 and the mounting pipe 6-8 and the joint of the mounting pipe 6-8 and the second connecting pipe 8, when the concentration is very low and is in a normal dissipation state, the second early warning cover body 6 and the gas circulation cover 6-1 are arranged, so that the dissipated gas can be collected into the gas circulation cover 6-1, and the fixing ring 6-18 and the second sealing ring 6-19 are arranged, so that the gas dissipated from the natural gas distributing valve 7 can be well ensured to enter the gas circulation cover 6-1 through the through hole 6-5, the collection is effectively carried out, the concentration value is detected, whether the concentration value exceeds the standard or not is judged through the gas circulation cover 6-1 in sequence, and the automatic alarm function is achieved, the sealing cover 6-4 under the normal state is separated from the exhaust pipe 6-2 (the normal dissipated natural gas does not affect the normal life of people, the dissipated natural gas amount is very small and is almost zero), when the natural gas with an overproof concentration value leaks, the early warning lamp 5-1 on the controller 5 and the alarm 5-2 are simultaneously turned on and sounded to warn residents in a room, and when no person is handling the natural gas within ten minutes, the alarm is automatically sent to a natural gas company, the natural gas main valve 2 is automatically closed, so that the disaster is prevented in advance, and after the indoor person hears the alarm within ten minutes, the sealing cover 6-4 is covered on the exhaust pipe 6-2 to prevent the natural gas from further diffusing into the room, and the handle 6-11 is rotated to enable the rotating rod 6-10 to rotate, therefore, the two threaded rods 6-12 rotate, the thread directions of the two threaded rods 6-12 are opposite, the two extrusion rubber rings 6-17 are simultaneously closed towards the middle and are extruded with the conical rings 6-14 and the circular rings 6-15 to form sealing, the contact part of the second early warning cover body 6 and the gas circulation cover 6-1 and the pipeline is prevented from leaking, and therefore a householder can replace the natural gas distribution valve 7 and the corresponding pipeline within enough time.
The other leakage point is the joint of the gas meter 3 and the natural gas main pipeline 1, a first early warning cover body 4 is additionally arranged on the device, when leakage occurs, the leakage is detected through a first detection probe 4-7, then the electric telescopic rod 4-13 is automatically started, the electric telescopic rod 4-13 retracts, the moving plate 4-12 and the two rubber sleeves 4-11 are driven to move, the two rubber sleeves 4-11 simultaneously enter the sealing sleeves 4-8, sealing is formed again under the action of the fixing ring 4-9 and the annular sealing element 4-10, leakage is prevented, and enough time is provided for a householder to be capable of carrying out corresponding repairing and replacing.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A household natural gas pipe automatic alarm leakage-proof device comprises a natural gas main pipe (1), a natural gas main valve (2), a gas meter (3), a natural gas branch valve (7) and a second connecting pipe (8), wherein the natural gas main valve (2) is fixedly arranged on the natural gas main pipe (1), and a gas meter gas outlet pipe (4-3) and a gas meter gas inlet pipe (4-4) are fixedly arranged at the bottom end of the natural gas main valve (2); the bottom end of the gas meter (3) is fixedly connected with a first early warning cover body (4), two first sealing plugs (4-1) are respectively inserted into two sides of the top end of the first early warning cover body (4), a gas meter gas outlet pipe (4-3) and a gas meter gas inlet pipe (4-4) are respectively inserted into the two first sealing plugs (4-1) in a fit manner, two second sealing plugs (4-2) are respectively inserted into two sides of the bottom end of the first early warning cover body (4), a natural gas main pipe (1) and a first connecting pipe (4-5) are respectively inserted into the two second sealing plugs (4-2) in a fit manner, the top end of the natural gas main pipe (1) is fixedly connected and communicated with the bottom end of the gas meter gas inlet pipe (4-4), the bottom end of the gas meter gas outlet pipe (4-3) is fixedly connected and communicated with the top end of the, the natural gas main pipeline (1) and the first connecting pipes (4-5) are respectively jointed and sleeved with rubber sleeves (4-11), a movable plate (4-12) is arranged in the first early warning cover body (4), the natural gas main pipeline (1) and the first connecting pipes (4-5) respectively penetrate through the movable plate (4-12) and are jointed and slidably connected with the movable plate, one ends of the two rubber sleeves (4-11) are respectively fixedly connected with one side of the movable plate (4-12), a first detection probe (4-7) is fixedly installed on the inner wall of one side of the first early warning cover body (4), the first early warning cover body (4) is divided into an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through bolts, four corners on the inner bottom surface of the lower shell are respectively fixedly installed with plug connectors (4-6), and four corners on the top end of the upper shell are respectively screwed with bolts, an electric telescopic rod (4-13) is fixedly installed on the inner wall of one side of the lower shell, the output end of the electric telescopic rod (4-13) is fixedly connected with one side of the movable plate (4-12), the electric telescopic rod (4-13) is arranged between the two rubber sleeves (4-11), the inner wall of one side of the lower shell is respectively and fixedly provided with a sealing sleeve (4-8), the gas meter outlet pipe (4-3) and the gas meter inlet pipe (4-4) respectively penetrate through the corresponding sealing sleeves (4-8) and are in sliding connection with the sealing sleeves, the gas meter outlet pipe (4-3) and the gas meter inlet pipe (4-4) are respectively jointed and sleeved with two fixing rings (4-9), the outer wall of each fixing ring (4-9) is respectively and fixedly connected with the inner wall of the corresponding sealing sleeve (4-8), one side of each fixing ring (4-9) is fixedly provided with a fixing ring (4-9), one side of the gas meter (3) is provided with a controller (5), the controller (5) is fixedly arranged on a wall, the controller (5) is fixedly provided with an early warning lamp (5-1), the controller (5) is provided with a control panel (5-3), the controller (5) is provided with an alarm (5-2), the controller (5) is fixedly provided with a second detection probe (5-4), the other end of the first connecting pipe (4-5) is fixedly connected with a mounting pipe (6-8), the other end of the mounting pipe (6-8) is fixedly connected with a second connecting pipe (8), and the mounting pipe (6-8) is fixedly provided with a natural gas distributing valve (7), two connecting blocks (6-9) are respectively and fixedly installed on two sides of the bottom end of the installation pipe (6-8), a rotating rod (6-10) is arranged between the two connecting blocks (6-9), two ends of the rotating rod (6-10) respectively penetrate through the two connecting blocks (6-9) and are in rotating connection with the two connecting blocks, a handle (6-11) is fixedly installed on the rotating rod (6-10), threaded rods (6-12) are respectively and fixedly installed at two ends of the rotating rod (6-10), threaded sleeves (6-13) are respectively screwed at the other ends of the two threaded rods (6-12), a lantern ring (6-16) is fixedly connected to the top end of one side of each threaded sleeve (6-13), and the two lantern rings (6-16) are respectively sleeved on the second connecting pipe (8) and the first connecting pipe (4-5) and are respectively in sliding connection with the, one side of each lantern ring (6-16) is fixedly connected with an extrusion rubber ring (6-17), two sides of each installation pipe (6-8) are respectively and fixedly provided with two second early warning cover bodies (6), the two second early warning cover bodies (6) are respectively jointed and sleeved on the second connecting pipe (8) and the first connecting pipe (4-5), the two second early warning cover bodies (6) are respectively and fixedly connected with the second connecting pipe (8) and the first connecting pipe (4-5), the inner wall of each second early warning cover body (6) is fixedly embedded with a first sealing ring (6-7), the other ends of the two second early warning cover bodies (6) are respectively and fixedly connected with conical rings (6-14), conical parts of the conical rings (6-14) are fixedly provided with circular rings (6-15), and the circular rings (6-15) are arranged opposite to the corresponding extrusion rubber rings (6-17), a gas flow cover (6-1) is fixedly inserted into the top end of each second early warning cover body (6), a sealing gasket (6-6) is fixedly arranged at the joint of the bottom end of each gas flow cover (6-1) and the second early warning cover body (6), an exhaust pipe (6-2) is fixedly connected to the top end of one gas flow cover (6-1), a third detection probe (6-3) is fixedly installed on the inner wall of the exhaust pipe (6-2), a sealing cover (6-4) is screwed at the top end of the exhaust pipe (6-2), the gas flow cover (6-1) is annular, a fixing ring (6-18) is fixedly connected between the annular inner walls of the gas flow cover (6-1), and the fixing ring (6-18) is sleeved on the natural gas distributing valve (7) and is rotatably connected with the natural gas distributing valve, the gas distribution cover is characterized in that a second sealing ring (6-19) is fixedly arranged at the rotary connection position of the fixing ring (6-18) and the natural gas distribution valve (7), two through holes (6-5) are respectively formed in the annular inner wall of the gas distribution cover (6-1), and the two through holes (6-5) are respectively communicated with the region from the bottom end of the fixing ring (6-18) to the top end of the installation pipe (6-8).
2. A household natural gas pipe automatic alarm leakage-proof device according to claim 1, characterized in that: the first detection probe (4-7), the second detection probe (5-4) and the third detection probe (6-3) are electrically connected with the control panel (5-3) through lines.
3. A household natural gas pipe automatic alarm leakage-proof device according to claim 1, characterized in that: the second early warning cover body (6) and the gas circulation cover (6-1) are both made of hard alloy materials.
4. A household natural gas pipe automatic alarm leakage-proof device according to claim 1, characterized in that: the thickness of the rubber sleeve (4-11) is 2-3mm greater than that of the fixing ring (4-9).
5. A household natural gas pipe automatic alarm leakage-proof device according to claim 1, characterized in that: the electric telescopic rods (4-13) are electrically connected with the control panel (5-3) through a circuit.
6. A household natural gas pipe automatic alarm leakage-proof device according to claim 1, characterized in that: the controller (5) is electrically connected with an external power supply through a circuit.
CN202110112299.XA 2021-01-27 2021-01-27 Automatic alarm leakage-proof device for household natural gas pipe Active CN112780956B (en)

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CN202110112299.XA CN112780956B (en) 2021-01-27 2021-01-27 Automatic alarm leakage-proof device for household natural gas pipe

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CN202110112299.XA CN112780956B (en) 2021-01-27 2021-01-27 Automatic alarm leakage-proof device for household natural gas pipe

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CN112780956B CN112780956B (en) 2022-05-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114440140A (en) * 2021-12-31 2022-05-06 南京市计量监督检测院 Gas leakage volume measurement detection device for detection

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CN114440140A (en) * 2021-12-31 2022-05-06 南京市计量监督检测院 Gas leakage volume measurement detection device for detection

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