CN113701064B

CN113701064B - Intelligent gas leakage monitoring system

Info

Publication number: CN113701064B
Application number: CN202111260847.XA
Authority: CN
Inventors: 邹天奇; 丁兰; 常伟南
Original assignee: Nantong Cnpc Gas Co ltd
Current assignee: Nantong Cnpc Gas Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-06-07
Anticipated expiration: 2041-10-28
Also published as: CN113701064A

Abstract

The invention discloses an intelligent gas leakage monitoring system which comprises a shell and a valve body arranged in the shell, wherein two sides of the valve body are respectively provided with a communicating port, each communicating port is hermetically connected with an air inlet pipe, each air inlet pipe is hermetically and fixedly connected with the communicating port through a flange, each air inlet pipe penetrates through the inner wall of the shell on the corresponding side and is hermetically and fixedly connected with the inner wall, the middle part of the valve body is provided with a connecting pipe in a penetrating manner, the top of the connecting pipe is connected with a detection box, a gas leakage detection structure is arranged in the detection box, the bottom of the connecting pipe is sealed, the interior of the shell is pumped into a vacuum state through a negative pressure machine, and a gas leakage alarm structure is arranged in the shell. Has the advantages that: the detection of the air supply pressure realizes the detection of the gas transportation state, and has the advantages of quantitative analysis and interference avoidance.

Description

Intelligent gas leakage monitoring system

Technical Field

The invention relates to the technical field of gas leakage detection alarm, in particular to an intelligent gas leakage monitoring system.

Background

The gas is a general name of gas fuel, can be burnt to emit heat, is used by urban residents and industrial enterprises, mainly comprises natural gas, artificial gas, liquefied petroleum gas and methane, always has hidden troubles of gas leakage when the gas is used, including gas leakage caused by rubber pipe problems, accounts for more than 30 percent of all gas accidents caused by gas rubber pipe aging or mouse biting, and causes the gas leakage due to the aging and cracking of the rubber pipe when the rubber pipe exceeds the safe service life, thereby causing serious potential safety hazards.

In the prior art, the gas leakage generally has two conditions, one is that the joint between rubber pipes is loosened, and the other is that part of the gas is leaked due to cracking caused by the aging of the rubber pipes, and the prior art has the defects of insufficient detection equipment for the gas leakage and cannot perform timely detection and alarm work on the leakage condition of the gas part.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an intelligent gas leakage monitoring system.

The utility model provides an intelligence gas leakage monitoring system, includes the shell and sets up the valve body in the shell, a intercommunication mouth and every have been seted up respectively to the both sides of valve body the equal sealing connection of intercommunication mouth has an intake pipe, every the intake pipe all through flange and the sealed fixed connection of intercommunication mouth, every the intake pipe all runs through the inner wall of the shell of corresponding one side and rather than sealed fixed connection, the middle part of valve body is run through and is provided with the connecting pipe, the top of connecting pipe is connected with the detection case, be provided with the gas leakage detection structure in the detection case, the bottom of connecting pipe is sealed, the inside of shell is taken out through the negative-pressure machine and is the state of vacuum, be provided with gas leakage alarm structure in the shell.

Furthermore, an air inlet is formed in one side, close to one communicating opening, of the connecting pipe, an air guide opening is formed in one side, close to the other communicating opening, of the connecting pipe, a one-way valve is connected to the air guide opening in a sealing mode, the one-way valve only allows air to flow in the direction from the air inlet to the air guide opening, and the bottom of the connecting pipe is rotatably connected with the inner bottom wall of the shell.

Further, the gas leakage detection structure includes that the top of connecting pipe is provided with first permanent magnet, the partial fixedly connected with a plurality of conductor bars of outer lane of first permanent magnet up end, it is a plurality of the conductor bar seals the diapire that runs through the detection case jointly and communicates rather than the inner space, and is a plurality of one end fixedly connected with pick-up plate that the conductor bar is located the connecting pipe, the below of pick-up plate is provided with the piezoelectric patches, the piezoelectric patches electricity is connected with the condenser, the top of first permanent magnet block is provided with the second permanent magnet, the fixed interior roof that sets up at the connecting pipe of second permanent magnet, the first spring of fixedly connected with between second permanent magnet and the first permanent magnet.

Further, the capacitor comprises a first capacitor and a second capacitor, the first capacitor and the second capacitor are respectively connected in parallel and connected with a diode, the maximum capacity of the first capacitor is larger than that of the second capacitor, the second capacitor is made of a recoverable metal material, and the piezoelectric patch, the first capacitor and the second capacitor are respectively connected in parallel.

Further, gas leakage alarm structure includes the siren, the siren is connected with first electric capacity electricity, the lateral wall of shell runs through and is provided with the spread groove, sliding connection has the movable block in the spread groove, the one end fixedly connected with compression piece of movable block outside, a plurality of second springs of compression piece fixedly connected with, it is a plurality of the both ends of second spring respectively with the lateral wall fixed connection of compression piece and shell, the partial fixedly connected with rack plate of movable block in the shell, the part outside that the connecting pipe is close to the movable block is provided with a plurality of tooth-shaped blocks, and is a plurality of the tooth-shaped block meshes with the rack plate.

Furthermore, a luminous layer is embedded in the inner wall of the air inlet pipe, the luminous layer is made of electric luminous materials, and the luminous layer is electrically connected with the first capacitor through a wire.

Compared with the prior art, the invention has the advantages that:

1: realize the detection to gas transport state through the detection to gas supply atmospheric pressure, under normal gas supply and gas leakage state, the atmospheric pressure value takes place the characteristics of great difference, realizes the analysis to the testing result to through the characteristics of condenser current collection and puncture, realize quantitative analysis's effect, improve application range and accuracy:

2. when air leakage occurs at the joint of the air inlet pipe, the set negative pressure state in the shell can be damaged in the air leakage.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent gas leakage monitoring system provided by the invention;

FIG. 2 is a schematic structural diagram of a valve body in an intelligent gas leakage monitoring system according to the present invention;

fig. 3 is a schematic diagram of an internal structure of an intelligent gas leakage monitoring system provided by the invention;

fig. 4 is a schematic structural diagram of a connecting pipe and a movable block in the intelligent gas leakage monitoring system provided by the invention;

fig. 5 is a schematic structural diagram of a connecting pipe and a detection box in the intelligent gas leakage monitoring system provided by the invention;

FIG. 6 is a circuit diagram of the piezoelectric patch, the diode, the first capacitor, the second capacitor and the alarm in the intelligent gas leakage monitoring system of the present invention;

fig. 7 is a schematic structural view of a connecting pipe and a valve body connecting pipe in the intelligent gas leakage monitoring system of the invention.

In the figure: the detection device comprises a shell 1, a valve body 2, a communication port 3, an air inlet pipe 4, a connecting pipe 5, a detection box 6, an air inlet 7, an air guide port 8, a check valve 9, a first permanent magnet 10, a conductor rod 11, a detection plate 12, a piezoelectric plate 13, a second permanent magnet 14, a first spring 15, a connecting groove 16, a movable block 17, a compression block 18, a second spring 19, a toothed block 20, a light emitting layer 21 and a rack plate 22.

Detailed Description

Refer to fig. 1, 2, 3, 7, an intelligence gas leakage monitoring system, including shell 1 and the valve body 2 of setting in shell 1, a intercommunication mouth 3 has been seted up respectively to valve body 2's both sides and every intercommunication mouth 3 equal sealing connection has an intake pipe 4, every intake pipe 4 all is through flange and the 3 sealed fixed connection of intercommunication mouth, every intake pipe 4 all runs through the inner wall of shell 1 who corresponds one side and rather than sealed fixed connection, the middle part of valve body 2 is run through and is provided with connecting pipe 5, the top of connecting pipe 5 is connected with detection case 6, be provided with the gas leakage detection structure in the detection case 6, the bottom of connecting pipe 5 is sealed, the inside of shell 1 is taken out into the vacuum state through the negative-pressure machine, be provided with gas leakage alarm structure in the shell 1.

Referring to fig. 4-5, an air inlet 7 is disposed on one side of the connecting pipe 5 close to one communicating port 3, an air guide port 8 is disposed on one side of the connecting pipe 5 close to the other communicating port 3, a check valve 9 is hermetically connected in the air guide port 8, the check valve 9 only allows air to flow along the direction from the air inlet 7 to the air guide port 8, the bottom of the connecting pipe 5 is rotatably connected to the inner bottom wall of the housing 1, the air leakage detecting structure includes a first permanent magnet 10 disposed on the top of the connecting pipe 5, a plurality of conductor rods 11 are fixedly connected to the outer ring portion of the upper end surface of the first permanent magnet 10, the plurality of conductor rods 11 jointly and hermetically penetrate through the bottom wall of the detecting box 6 and are communicated with the inner space thereof, a detecting plate 12 is fixedly connected to one end of the plurality of conductor rods 11 located in the connecting pipe 5, a piezoelectric plate 13 is disposed below the detecting plate 12, and a second permanent magnet 14 is disposed above the first permanent magnet 10, the second permanent magnet 14 is fixedly arranged on the inner top wall of the connecting pipe 5, and a first spring 15 is fixedly connected between the second permanent magnet 14 and the first permanent magnet 10.

Referring to fig. 6, the maximum capacity of the first capacitor S2 is greater than that of the second capacitor S3, the second capacitor is made of a recoverable metal material, the piezoelectric plate S5 is connected in series with the diode S4 and then connected in parallel with the first capacitor S2 and the second capacitor S3, the first capacitor S1 and the second capacitor S3 are charged simultaneously through the unidirectional conductivity of the diode S4 and the compression charging of the piezoelectric plate S5, and the second capacitor S3 is broken down when reaching a limit voltage and acts as a wire, at this time, the first capacitor S2 is instantaneously discharged to operate the alarm S1.

The air leakage alarm structure comprises an alarm, the alarm is electrically connected with a first capacitor S2, a connecting groove 16 is arranged on the side wall of a shell 1 in a penetrating way, a movable block 17 is connected in the connecting groove 16 in a sliding way, one end of the movable block 17 outside is fixedly connected with a compression block 18, the compression block 18 is fixedly connected with a plurality of second springs 19, two ends of the second springs 19 are respectively and fixedly connected with the compression block 18 and the outer side wall of the shell 1, a rack plate 22 is fixedly connected to the part of the movable block 17 in the shell 1, a plurality of toothed blocks 20 are arranged on the outer side of the part, close to the movable block 17, of a connecting pipe 5, the plurality of toothed blocks 20 are meshed with the rack plate 22, a luminescent layer 21 is embedded on the inner wall of an air inlet pipe 4, the luminescent layer 21 is made of an electric luminescent material, and the luminescent layer 21 is electrically connected with the first capacitor through a lead, when the first capacitor S2 is powered, the light emitting layer 21 will emit light, thereby warning the outside that the gas leakage problem occurs in this part of the pipeline.

When the pipeline leakage problem occurs, the pipeline leakage problem generally includes two situations, one is leakage caused by cracking and aging of the pipeline, and the other is leakage caused by poor sealing of the connection part between the pipelines, in the invention, when the pipeline cracks or ages, the phenomenon that the air inlet pressure is obviously reduced because part of gas leaks out, so that the pressure of the lower end face of the first permanent magnet 10 positioned in the connecting pipe 5 is reduced, at the moment, under the combined action of the magnetic action and the spring action, the change of the pressure causes the first permanent magnet 11 to generate larger displacement and touch the piezoelectric sheet 13, the first permanent magnet 10 rebounds to the initial state after touching the piezoelectric sheet 13, if the air inlet pressure only changes for a short time, the first permanent magnet 10 cannot drive the detection plate 12 to touch the piezoelectric sheet 13 for a plurality of times, and when the air inlet pressure is reduced as a whole, when the stationary state of the first permanent magnet 10 is below the original state and the detection plate 12 is finally attached to the piezoelectric plate 13, the first capacitor S2 connected to the piezoelectric plate 13 is turned on, and the first capacitor S2 discharges the stored energy to operate the alarm;

when the joint between the pipelines is sealed and leaked, the detection box 6 in a negative pressure state is filled with gas, so that the movable block 17 moves outwards, the rack plate 22 is driven to be meshed with the tooth-shaped block 20, the connecting pipe 5 is rotated by 180 degrees, one side of the original gas guide port 8 is sealed, and the other side of the original gas inlet 7 is sealed through the check valve 9, so that the whole gas supply pipeline is closed, and continuous leakage is avoided.

Claims

1. An intelligent gas leakage monitoring system comprises a shell (1) and a valve body (2) arranged in the shell (1), and is characterized in that two sides of the valve body (2) are respectively provided with a communicating port (3) and each communicating port (3) is hermetically connected with an air inlet pipe (4), each air inlet pipe (4) is hermetically and fixedly connected with the communicating port (3) through a flange, each air inlet pipe (4) penetrates through the inner wall of the shell (1) on one corresponding side and is hermetically and fixedly connected with the inner wall, the middle part of the valve body (2) is provided with a connecting pipe (5) in a penetrating manner, the top of the connecting pipe (5) is connected with a detection box (6), a gas leakage detection structure is arranged in the detection box (6), the bottom of the connecting pipe (5) is sealed, and the inside of the shell (1) is pumped into a vacuum state through a negative pressure machine, be provided with gas leakage alarm structure in shell (1), one air inlet (7) have been seted up to one side that connecting pipe (5) are close to a intercommunication mouth (3), one side that connecting pipe (5) are close to opposite side intercommunication mouth (3) has been seted up and has been led gas port (8), sealing connection has check valve (9) in leading gas port (8), check valve (9) only allow gaseous along air inlet (7) to the direction flow of leading gas port (8), the bottom of connecting pipe (5) is rotated with the interior diapire of shell (1) and is connected, the lateral wall of shell (1) runs through and is provided with spread groove (16), sliding connection has movable block (17) in spread groove (16), one end fixedly connected with compression block (18) outside movable block (17), a plurality of second spring (19) of compression block (18) fixedly connected with the lateral wall of compression block (18) and shell (1) respectively, it is a plurality of the both ends of second spring (19) respectively with the outer wall fixed with compression block (18) and shell (1) fixed The connection, the part of the movable block (17) in the shell (1) is fixedly connected with a rack plate (22), the outer side of the part, close to the movable block (17), of the connecting pipe (5) is provided with a plurality of toothed blocks (20), the plurality of toothed blocks (20) are meshed with the rack plate (22), when the joint between the pipelines is sealed and leaked, gas is filled into the shell in a negative pressure state at the moment, the movable block moves outwards, so that the rack plate is driven to be meshed with the toothed blocks, the connecting pipe is rotated by 180 degrees, one side of a gas guide port is sealed, on the other hand, one side of a gas inlet is sealed through a one-way valve, so that the whole gas supply pipeline is closed, and continuous leakage is avoided, the gas leakage detection structure comprises a first permanent magnet (10) arranged at the top of the connecting pipe (5), and a plurality of conductor rods (11) are fixedly connected to the outer ring part of the upper end face of the first permanent magnet (10), the conductor bars (11) are jointly sealed, penetrate through the bottom wall of the detection box (6) and are communicated with the inner space of the detection box, one end, located in the detection box (6), of each conductor bar (11) is fixedly connected with a detection plate (12), a piezoelectric plate (13) is arranged below each detection plate (12), a second permanent magnet (14) is arranged above each first permanent magnet (10), the second permanent magnet (14) is fixedly arranged on the inner top wall of the connecting pipe (5), and a first spring (15) is fixedly connected between each second permanent magnet (14) and the corresponding first permanent magnet (10).

2. An intelligent gas leakage monitoring system according to claim 1, wherein the piezoelectric sheet (13) is connected in series with the diode and then connected in parallel with the first capacitor and the second capacitor respectively, the maximum capacity of the first capacitor is larger than that of the second capacitor, and the second capacitor is made of a recoverable metal material.

3. The intelligent gas leakage monitoring system according to claim 2, wherein the gas leakage alarm structure includes an alarm, the alarm being electrically connected to the first capacitor.

4. An intelligent gas leakage monitoring system according to claim 1, wherein a luminescent layer (21) is embedded in the inner wall of the gas inlet pipe (4), the luminescent layer (21) is made of an electric luminescent material, and the luminescent layer (21) is electrically connected with the first capacitor through a wire.