CN116428526A - Gas flow monitoring device - Google Patents

Gas flow monitoring device Download PDF

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Publication number
CN116428526A
CN116428526A CN202211610874.XA CN202211610874A CN116428526A CN 116428526 A CN116428526 A CN 116428526A CN 202211610874 A CN202211610874 A CN 202211610874A CN 116428526 A CN116428526 A CN 116428526A
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CN
China
Prior art keywords
gas
circuit board
cavity
magnetic field
plug
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211610874.XA
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Chinese (zh)
Inventor
胡波清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Lanshuihua Intelligent Electronic Co ltd
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Guangdong Lanshuihua Intelligent Electronic Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Lanshuihua Intelligent Electronic Co ltd filed Critical Guangdong Lanshuihua Intelligent Electronic Co ltd
Priority to CN202211610874.XA priority Critical patent/CN116428526A/en
Publication of CN116428526A publication Critical patent/CN116428526A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • 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
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0033—Electrical or magnetic means using a permanent magnet, e.g. in combination with a reed relays
    • 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
    • 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
    • F17D5/02—Preventing, monitoring, or locating loss
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

The invention discloses a gas flow monitoring device, in the invention, as long as the gas outlet of a gas detection shell has gas output, the invention can realize the identification of the gas flow state in a stove, thereby, when the stove pipeline is damaged and the stove fails to ignite, and an ignition switch does not return to the original position, the gas flow is indicated by an alarm, a user finds the alarm to alarm, and the stove does not have open fire or alarm to alarm, and the stove does not open, the gas leakage can be judged, namely, the invention can help the user judge whether the gas leakage occurs on the stove based on the gas flow state in the stove, so that the gas leakage can be timely found at the beginning of the ignition failure or when the gas pipeline in the stove is damaged, and measures can be timely taken, thereby improving the gas use safety.

Description

Gas flow monitoring device
Technical Field
The invention belongs to the technical field of gas flow monitoring, and particularly relates to a gas flow monitoring device.
Background
With the continuous development of the economy in China, clean energy sources such as natural gas and the like are moved into daily life of people, great convenience is brought to the life of people, compared with traditional gas, the natural gas has higher safety and cleanliness, natural gas is nontoxic and easy to emit, the specific gravity is lighter than air, the natural gas is not suitable to accumulate into explosive gas, and has great advantages in safety, but the natural gas is taken as a combustible gas, and the danger of explosion still exists when the concentration is too high, so the natural gas leakage prevention and detection are necessary
At present, most of gas stoves in the market have no gas flow indication function, and can not realize indication of gas introduced into the stove, meanwhile, in the use process, the failure of stove ignition is easy to occur, an ignition switch is not restored to the original position, but a user does not perceive the problem, and the problem of pipeline damage in the stove occurs; at this time, the gas leakage is caused, but most of the existing gas leakage detection needs to reach the set concentration before being warned, the gas leakage cannot be detected quickly at the beginning of the leakage, and when the ventilation condition is good, the leaked gas concentration needs to reach the warning set value for a long time, so that the gas leakage is difficult to detect under the condition; therefore, the gas flow monitoring device of the stove is provided to realize the state identification of the gas flow of the stove when the ignition switch of the stove is not restored and the pipeline in the stove is damaged, thereby helping a user to judge whether the stove leaks gas or not, and becoming a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a gas flow monitoring device which is used for solving the problems that in the prior art, a stove cannot realize the indication of gas introduced into the stove, and the gas detection needs to reach a set concentration and then can give an alarm, so that when the ignition of the stove fails or a gas pipeline is damaged, the gas leakage cannot be found in time.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, there is provided a gas flow monitoring device comprising: the device comprises a flow monitoring mechanism and a gas detection shell, wherein a gas cavity is arranged in the gas detection shell, and a plurality of vertical upward wire slots are formed in the inner wall of the gas cavity;
the flow monitoring mechanism comprises an alarm, a processor, a flow plug, a magnet and a magnetic field detection assembly, wherein the appearance of the flow plug is matched with that of the gas cavity, the flow plug is slidably arranged in the gas cavity, and when gas does not enter the gas cavity, the flow plug is positioned at the bottom of the gas cavity and is attached to the inner wall of the gas cavity so as to completely seal the wire slot;
the top of the flow plug is fixedly connected with the magnet, the gas detection shell is arranged at a position above the magnet, the processor and the magnetic field detection assembly are arranged, wherein the signal output end of the magnetic field detection assembly is electrically connected with the processor, the processor is electrically connected with the alarm, when gas does not enter the gas cavity, the magnet is positioned outside the magnetic field detection range of the magnetic field detection assembly, and when gas enters the gas cavity, the gas pushes the flow plug to move upwards so as to drive the magnet to enter the magnetic field detection range of the magnetic field detection assembly;
the bottom of the gas detection shell is provided with a gas inlet communicated with a gas pipeline, the side wall of the gas detection shell is provided with a gas outlet communicated with the gas cavity, wherein the gas outlet is positioned above the gas cavity, and the gas inlet is communicated with the gas cavity.
Based on the above disclosure, the invention sets a gas detecting shell at the outlet of the gas pipeline, sets a gas cavity in the gas detecting shell, sets a wire slot for gas circulation and a monitoring mechanism for monitoring gas flow in the gas cavity, wherein the monitoring mechanism comprises a flow plug, a magnet, a magnetic field detecting component, a processor and an alarm, meanwhile, when the gas is not introduced into the gas cavity, the flow plug is positioned at the lower part of the gas cavity to plug the wire slot, and the magnet on the flow plug is positioned outside the detection range of the magnetic field detecting component; therefore, the invention drives the flow plug to move by using the fuel gas to drive the magnet to move, and further monitors the fuel gas flow by detecting the change of the magnetic field, and the specific process is as follows: when the fuel gas in the fuel gas pipeline enters the fuel gas cavity, the fuel gas pushes the flow plug to move upwards, so that the magnet is driven to enter the detection range of the magnetic field detection assembly, when the magnetic field detection assembly detects that the magnetic field changes, an electric signal is output to the processor, and after the processor receives the electric signal, the processor can recognize that the fuel gas in the fuel gas pipeline is output, thereby controlling the alarm to work; of course, after the flow plug moves upwards, the wire slot is exposed, and the fuel gas can enter the fuel gas outlet from the wire slot, so that the fuel gas can be supplied to the gas using equipment.
Through the design, in the invention, as long as the gas outlet of the gas detection shell has gas output, the invention can realize the identification of the gas flow state in the stove, thereby, when the stove pipeline is damaged and the stove fails to ignite, and the ignition switch does not return to the original position, the gas flow indication is carried out through the alarm, and the user finds the alarm to alarm, and the stove does not have open fire or alarm, and the stove does not open, the gas leakage can be judged, namely, the invention can help the user judge whether the gas leakage occurs in the stove based on the gas flow state in the stove, so that the gas leakage can be timely found at the beginning of the ignition failure or when the gas pipeline in the stove is damaged, and measures are timely taken, thereby improving the gas use safety.
In one possible design, the magnetic field detection assembly includes: the gas detection device comprises a circuit board and a magnetic sensor, wherein the circuit board is arranged at the top end opening of the gas detection shell, the processor is arranged on the circuit board, the magnetic sensor is arranged on the end face of the circuit board, which faces to the magnet, and the top end opening of the gas detection shell is closed when the circuit board is arranged at the top end of the gas detection shell.
Based on the above disclosure, the invention discloses a specific structure of a magnetic field detection assembly, and the working principle of the magnetic field detection assembly is as follows: when the magnetic sensor works, the magnetic probe in the magnetic sensor forms a static magnetic field, when the magnet moves into the static magnetic field, the magnetic field changes, and the magnetic sensor can detect the magnetic field changes and generate an electric signal to be output to the processor; thus, the gas flow state can be monitored.
In one possible design, the magnetic field detection assembly further comprises: the mounting table is fixed on the end face of the circuit board, which faces the circuit board, and a metal shielding cavity is arranged at the bottom of the mounting table;
the magnetic sensor is fixed in the metal shielding cavity and is electrically connected with the processor.
Based on the above disclosure, the installation of the magnetic sensor can be facilitated by arranging the installation table, and meanwhile, the metal shielding cavity can shield external electromagnetic interference, so that the detection accuracy is improved.
In one possible design, the top of the flow plug is fixedly connected to the magnet through a support rod, and an elastic element is arranged between the magnet and the circuit board.
Based on the above disclosure, by arranging the elastic element, when fuel gas is not introduced, the flow plug can be quickly reset to the bottom of the fuel gas cavity, so that the next flow detection is facilitated.
In one possible design, the inner wall of the gas chamber is provided with two limiting plates sequentially from top to bottom, and the magnet is located between the two limiting plates.
A first mounting hole is formed in two sides of an opening at the top end of the fuel gas detection shell, a second mounting hole corresponding to the first mounting hole is formed in the circuit board, and the circuit board is fixed on the fuel gas detection shell through bolts screwed into the first mounting hole and the second mounting hole;
the bottom of the circuit board is provided with a supporting table, wherein the supporting table is arranged along the width direction of the circuit board, two sides of the supporting table in the length direction are respectively provided with a bulge, and the bulges are parallel to the supporting table;
the top of the mounting table is provided with a first groove, and the side wall of the first groove is provided with a chute matched with the bulge;
the bottom of the circuit board is also provided with a signal line interface electrically connected with the processor, and the signal line of the magnetic sensor is spliced with the signal line interface.
In one possible design, the flow plug includes: the gas slot is characterized by comprising a first plug body and a second plug body which are sequentially arranged from top to bottom, wherein the first plug body is in sliding connection with the gas cavity through a sliding assembly, and when gas does not enter the gas cavity, the second plug body is positioned at the bottom of the gas cavity and is attached to the inner wall of the gas cavity so as to completely seal the gas slot.
Based on the disclosure, by arranging the sliding component, the friction force between the flow plug and the gas cavity can be reduced, so that the thrust required for driving the flow plug to move is reduced, and therefore, more trace gas flow detection can be realized.
In one possible design, the slide assembly includes: the gas plug comprises a sliding rail and a roller, wherein the roller is arranged on the side wall of the first plug body, which is in contact with the gas cavity, a second groove is formed in the side wall of the gas cavity, which is in contact with the first plug body, and the sliding rail matched with the roller is arranged in the second groove.
In one possible design, the cross-section of the first plug body is rectangular in structure, and the cross-sectional area of the second plug body gradually decreases from top to bottom.
In one possible design, the wire chase is provided with at least 3 wire chases, with the cross-sectional area of each wire chase increasing from bottom to top.
The beneficial effects are that:
(1) In the invention, as long as the gas outlet of the gas detection shell has gas output, the invention can realize the identification of the gas flow state in the stove, thereby, when the stove pipeline is damaged and the stove fails to ignite, and the ignition switch does not return to the original position, the gas flow indication is carried out through the alarm, and the user finds the alarm to alarm, and the stove does not have open fire or alarm, and the stove is not opened, the gas leakage can be judged, namely, the invention can help the user judge whether the stove has gas leakage based on the gas flow state in the stove, so that the gas leakage can be timely found at the beginning of the ignition failure or when the gas pipeline in the stove is damaged, and measures are timely taken, thereby improving the gas use safety.
Drawings
Fig. 1 is a schematic perspective view of a gas flow monitoring device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a specific structure of a gas detection shell according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a magnetic field detection assembly according to an embodiment of the present invention;
FIG. 4 is an exploded view of a magnetic field sensing assembly according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the structure A in FIG. 2 according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of the structure at B in FIG. 1 according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a specific structure of a flow plug according to an embodiment of the present invention.
Reference numerals: 10-a gas detection shell; 11-a gas cavity; 12-wire slots; 20-flow plug; 30-magnet; 40-a magnetic field detection assembly; 13-gas inlet; 14-a fuel gas outlet; 41-a circuit board; 42-a magnetic sensor; 43-mounting table; 43 a-a metal shield cavity; 21-supporting rods; 44-an elastic element; 11 a-limiting plates; 41 a-a second mounting hole; 41 b-a support table; 41 c-protrusions; 43 b-first groove; 43 c-a chute; 41 d-signal line interface; 22-a first plug body; 23-a second plug body; 50-rolling wheels; 11 b-a second groove.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
Examples:
referring to fig. 1 to 7, the gas flow monitoring device provided in this embodiment may include, but is not limited to: the flow monitoring mechanism and the gas detecting shell 10, wherein a gas cavity 11 is provided in the gas detecting shell 10, and a plurality of vertical upward slots 12 are provided on the inner wall of the gas cavity 11, as shown in fig. 1 and 2, a gas inlet 13 communicated with a gas pipe is provided at the bottom of the gas detecting shell 10, a gas outlet 14 communicated with the gas cavity 11 is provided on the side wall of the gas detecting shell 10, wherein the gas outlet 14 is located above the gas cavity 11, and the gas inlet 13 is communicated with the gas cavity 11, i.e. in the embodiment, the gas detecting shell 10 is provided between the gas pipe and the gas inlet of the gas stove, and is used for detecting the state of the gas flow of the stove, therefore, the gas flow monitoring device provided in the embodiment is only used for detecting the state of the gas flow introduced into the stove, and is not used for quantitative detection of the flow, namely, whether the gas stove is introduced or not in the detection of the stove.
Alternatively, referring to fig. 1, the wire slots 12 may be provided with at least 3 wire slots, for example and not limited thereto, and the cross-sectional area of each wire slot 12 increases gradually from bottom to top; through the design, the quick passing of the fuel gas through the wire slot 12 can be ensured, and the travel of the flow plug 20 can be prevented from being too long when the large-flow natural gas passes through.
In this embodiment, an example flow monitoring mechanism may include, but is not limited to: the alarm, the processor, the flow plug 20, the magnet 30 and the magnetic field detection assembly 40 are shown in fig. 1 and 2, wherein the flow plug 20 is matched with the gas cavity 11 in shape so as to completely fit the gas cavity 11, and thus, when the gas is not introduced, the gas cavity 11 is blocked; meanwhile, the flow plug 20 is slidably installed in the gas chamber 11, and when the gas does not enter the gas chamber 11, the flow plug 20 is located at the bottom of the gas chamber 11 and is attached to the inner wall of the gas chamber 11, so as to completely close the wire slot 12; namely, in the specific application, the fuel gas is introduced into the fuel gas cavity 11, so that the flow plug 20 is pushed to move upwards by the fuel gas, and the wire groove 12 is exposed in the upward movement process, so that the fuel gas flows out of the fuel gas cavity 11 through the wire groove 12; thus, the present embodiment is based on the movement of the flow plug 20 to achieve flow detection.
Still further, referring to fig. 1 and 2, the top of the flow plug 20 is fixedly connected with the magnet 30, the gas detection shell 10 is provided with the processor and the magnetic field detection assembly 40 at a position above the magnet 30, wherein a signal output end of the magnetic field detection assembly 40 is electrically connected with the processor, and the processor is electrically connected with the alarm; meanwhile, when the fuel gas does not enter the fuel gas chamber 11, the magnet 30 is located outside the magnetic field detection range of the magnetic field detection assembly 40, and when the fuel gas enters the fuel gas chamber 11, the fuel gas pushes the flow plug 20 to move upwards so as to drive the magnet 30 to enter the magnetic field detection range of the magnetic field detection assembly 40.
Therefore, through the foregoing explanation, the operating principle of the gas flow monitoring device provided by the embodiment is as follows:
when the fuel gas in the fuel gas pipeline enters the fuel gas cavity 11, the fuel gas pushes the flow plug 20 to move upwards, so that the magnet 30 is driven to enter the detection range of the magnetic field detection assembly 40, when the magnetic field detection assembly 40 detects that the magnetic field changes, an electric signal is output to the processor, and after the processor receives the electric signal, the processor can recognize that the fuel gas in the fuel gas pipeline is output, thereby controlling the alarm to work and sending an alarm prompt; of course, after the flow plug 20 moves upwards, the wire groove 12 on the inner wall of the gas cavity 11 is exposed, and the gas can enter the gas outlet 14 from the wire groove 12, so as to supply gas for the gas using equipment; therefore, when the device is used, as long as the gas in the gas pipeline is introduced into the stove, the gas will necessarily push the flow plug 20 to move upwards, so that the magnet 30 approaches the magnetic field detection assembly 40 to generate magnetic field change, and the processor detects the gas flow state in the stove according to the magnetic field change; therefore, whether the gas leakage is caused by the damage of a pipeline in the stove or the gas leakage is caused by the fact that a switch of the stove is not restored to the original position, the device can detect the gas leakage; the use process is as follows; after hearing the alarm sound, the user can check whether the gas leakage exists or not, and take measures in time; if the stove is closed, the alarm gives an alarm, which indicates that the pipeline in the stove is damaged and gas leakage exists; for another example, if the stove has no open fire, but the alarm gives an alarm, the ignition switch does not return to the original position when the ignition of the stove fails or is turned off, so that gas leakage is caused.
Therefore, through the explanation, the invention can realize the state identification of the gas flow in the stove, and can help a user judge whether the stove is leaked with gas based on the state of the gas flow in the stove, so that the gas leakage can be timely found at the beginning of ignition failure or when a gas pipeline in the stove is damaged, measures can be timely taken, and the use safety of the gas is further improved.
Referring to fig. 3 and 4, one specific structure of the magnetic field detection assembly is provided as follows:
in this embodiment, the magnetic field detection assembly 40 may include, but is not limited to: the circuit board 41 is installed at the top end opening of the gas detection shell 10, the processor is arranged on the circuit board 41, the magnetic sensor 42 is installed on the end face of the circuit board 41 facing the magnet 30, the magnetic sensor 42 is electrically connected with the processor, and the top end opening of the gas detection shell 10 is closed when the circuit board 41 is installed at the top end of the gas detection shell 10, as shown in fig. 2, 3 and 4; through the foregoing explanation, the magnetic field detection assembly 40 operates on the following principles: the magnetic sensor 42 is operated to form a static magnetic field by the magnetic probe therein, and when the magnet 30 moves into the static magnetic field, a magnetic field change is caused, and the magnetic sensor 43 detects the magnetic field change and generates an electrical signal to be output to the processor; therefore, the monitoring of the gas flow state can be realized, namely, when gas enters the stove, the magnetic field changes, and when the gas does not enter the stove, the magnetic field does not change.
In this embodiment, the circuit board 41 is further provided with a signal amplifying circuit, an input end of the signal amplifying circuit is electrically connected to an output end of the magnetic sensor 42, and an output end of the signal amplifying circuit is electrically connected to the processor, where the signal amplifying circuit is configured to amplify an electrical signal (substantially a voltage signal) output by the magnetic sensor 42, and transmit the amplified signal to the processor, so as to implement magnetic field detection; therefore, the signal amplifier is used for conveniently detecting the weak magnetic field change, so that the detection sensitivity is improved.
Alternatively, in the present embodiment, the magnetic sensor may be a tunneling magnetoresistance (Tunneling MagneticResistance, abbreviated as TMR), giant magnetoresistance (AMR), or anisotropic magnetoresistance (GMR) sensor.
In specific applications, referring to fig. 3 and 4, the present embodiment further provides a mounting table 43 on the circuit board 41, where the mounting table 43 is fixed on an end surface of the circuit board 41 facing the circuit board 41, a metal shielding cavity 43a is provided at a bottom of the mounting table 43, and the magnetic sensor 42 is fixed in the metal shielding cavity 43 a; therefore, through design, the installation table 43 not only can play a role in protecting the magnetic sensor 42, but also can shield external electromagnetic interference through the metal shielding cavity 43a formed at the bottom of the installation table, so that the accuracy of magnetic field detection is improved.
Referring to fig. 3 and 4, one of the mounting structures of the mounting table 43 and the circuit board 41 is provided as follows:
first, as for the circuit board 41, the present embodiment is provided with first mounting holes on both sides of the top end opening of the gas detection casing 10, and second mounting holes 41a corresponding to the first mounting holes are provided on the circuit board 41, whereby the circuit board 41 can be fixed on the gas detection casing 10 by bolts screwed into the first and second mounting holes 41 a; meanwhile, the mounting structure of the bolts can facilitate the rapid disassembly of the circuit board 41 so as to facilitate the maintenance of components on the circuit board 41; optionally, a gasket may be provided at a portion of the circuit board 41 contacting the top end of the gas detecting housing 10, so as to prevent gas in the gas chamber 11 from escaping from the installation place of the two during detection.
Next, as for the mounting structure between the mounting table 43 and the circuit board 41, as shown in fig. 3, a supporting table 41b is provided at the bottom of the circuit board 41 in the present embodiment, wherein the supporting table 41b is disposed along the width direction of the circuit board 41, two sides of the supporting table 41b in the length direction are respectively provided with a protrusion 41c, and the protrusions 41c are parallel to the supporting table 41 b; correspondingly, as shown in fig. 4, in this embodiment, a first groove 43b is further provided at the top of the mounting table 43, and a chute 43c matched with the protrusion 41c is formed on the sidewall of the first groove 43 b; thereby, the projection 41c can be inserted into the first groove 43b on the corresponding side, thereby realizing the sliding connection between the mount table 43 and the circuit board 41; of course, the above-described mounting method also facilitates the removal of the mounting table 43, and replacement and maintenance of the magnetic sensor 42 are performed.
Finally, for the connection structure between the magnetic sensor 42 and the processor, a signal line interface 41d electrically connected to the processor is further provided at the bottom of the circuit board 41 in this embodiment, and the signal line of the magnetic sensor 42 is plugged into the signal line interface 41 d; therefore, the traditional welding spot connection mode is abandoned, and the maintenance and replacement of the magnetic sensor 32 are more convenient; of course, in the present embodiment, the magnetic sensor 42 may be fixed in the metal shielding chamber 43a by a bolt mounting manner.
Thus, through the foregoing detailed explanation of the magnetic field detecting assembly 40, the detection of the gas flow in the gas chamber 11 can be completed by combining the magnet 30, so as to determine whether the gas enters the stove, so as to perform subsequent gas alarm.
Still further, referring to fig. 1, the top of the flow plug 20 is fixedly connected to the magnet 30 through a support rod 21, and an elastic element 44 is disposed between the magnet 30 and the circuit board 41; specifically, two support rods 21 are provided, and the elastic element 44 may be, but not limited to, a spring; thus, the support rod 21 can reduce the stroke of the flow plug 20, so that the magnet 30 can more easily enter the detection range of the magnetic sensor 42; at the same time, the elastic element 44 can help the flow plug 20 to quickly return to the bottom of the gas cavity 11 under the action of elastic force so as to perform flow detection again later.
Meanwhile, in order to prevent the excessive reset of the flow plug 20 under the pushing of the elastic element 44, the embodiment further sequentially sets two limiting plates 11a on the inner wall of the gas cavity 11 from top to bottom, and sets the magnet 30 between the two limiting plates 11 a; referring to fig. 1, the setting of the limiting plate 11a can limit the movement range of the magnet 30, so as to achieve the function of limiting the travel of the flow plug 20, thereby preventing the excessive resetting of the flow plug 20, and avoiding that the gas introduced cannot push the flow plug 20 to move when the flow detection is performed again.
Referring to fig. 5, 6, 7, 1 and 2, one specific construction of the flow plug 20 is disclosed below:
in this embodiment, the flow plug 20 may include, but is not limited to: the first plug body 22 and the second plug body 23 are sequentially arranged from top to bottom, wherein the first plug body 22 is in sliding connection with the gas cavity 11 through a sliding assembly, and when gas does not enter the gas cavity 11, the second plug body 23 is positioned at the bottom of the gas cavity 11 and is attached to the inner wall of the gas cavity 11 so as to completely seal the wire slot 12; through the design, the sliding component can reduce the friction force between the flow plug 20 and the inner wall of the gas cavity 11, so that the gas thrust required by movement is reduced, and therefore, even if trace gas enters the gas cavity 11, the flow plug 20 can still be pushed to move upwards, and thus, the flow detection of the trace gas is realized; in addition, the flow plug 20 is provided in two parts, the reason for this is: the first plug body 22 is used as a movement part and is mainly responsible for the movement of the flow plug 20, and the second plug body 23 is used as a plugging part for plugging the wire slot 12 when no fuel gas is introduced; therefore, the sliding assembly is arranged between the flow plug 20 and the gas cavity 11, and the sealing function of the wire groove 12 can be also achieved.
Referring to fig. 5, 6 and 7, one specific structure of the sliding assembly is given below:
for example, the sliding assembly may include, but is not limited to: the gas combustion device comprises a sliding rail and a roller 50, wherein the roller 50 is arranged on the side wall of the first plug body 22, which is contacted with the gas combustion chamber 11, a second groove 11b is formed in the side wall of the gas combustion chamber 11, which is contacted with the first plug body 22, and the sliding rail matched with the roller 50 is arranged in the second groove 11 b; therefore, the sliding connection between the flow plug 20 and the gas cavity 11 can be realized by means of the mutual matching of the sliding rail and the roller 50, so that the friction force between the flow plug 20 and the gas cavity 11 is reduced, and the flow plug is easier to push.
Further, in the present embodiment, for example, the cross section of the first plug 22 is rectangular, and the cross section of the second plug 23 gradually decreases from top to bottom; since the flow plug 20 has the shape matching the gas chamber 11, the gas chamber 11 is rectangular at the upper part, and the cross section of the lower part of the gas chamber is gradually reduced; thus, as the fuel gas enters the bottom of the fuel gas chamber 11, a greater pressure may be created, more easily pushing the flow plug 20 upward.
In the present embodiment, the magnet is a permanent magnet, for example, and a cover may be further provided on the top of the gas detection case 10, thereby functioning as the protection circuit board 41.
Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the invention and is not intended to limit the scope of the invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A gas flow monitoring device, comprising: the gas flow monitoring device comprises a flow monitoring mechanism and a gas detection shell (10), wherein a gas cavity (11) is arranged in the gas detection shell (10), and a plurality of vertical upward wire grooves (12) are formed in the inner wall of the gas cavity (11);
the flow monitoring mechanism comprises an alarm, a processor, a flow plug (20), a magnet (30) and a magnetic field detection assembly (40), wherein the appearance of the flow plug (20) is matched with that of the gas cavity (11), the flow plug (20) is slidably arranged in the gas cavity (11), and when gas does not enter the gas cavity (11), the flow plug (20) is positioned at the bottom of the gas cavity (11) and is attached to the inner wall of the gas cavity (11) so as to completely seal the wire slot (12);
the top of the flow plug (20) is fixedly connected with the magnet (30), the gas detection shell (10) is arranged at a position above the magnet (30) and is provided with the processor and the magnetic field detection assembly (40), wherein the signal output end of the magnetic field detection assembly (40) is electrically connected with the processor, the processor is electrically connected with the alarm, when gas does not enter the gas cavity (11), the magnet (30) is positioned outside the magnetic field detection range of the magnetic field detection assembly (40), and when gas enters the gas cavity (11), the gas pushes the flow plug (20) to move upwards so as to drive the magnet (30) to enter the magnetic field detection range of the magnetic field detection assembly (40);
the bottom of gas detection shell (10) is provided with gas entry (13) that link to each other with the gas pipeline, be provided with on the lateral wall of gas detection shell (10) with gas export (14) of gas chamber (11) intercommunication, wherein, gas export (14) are located the top of gas chamber (11), just gas entry (13) intercommunication gas chamber (11).
2. The gas flow monitoring device of claim 1, wherein the magnetic field detection assembly (40) comprises: circuit board (41) and magnetic sensor (42), wherein, circuit board (41) install in the top opening part of gas detection shell (10), the treater set up in on circuit board (41), magnetic sensor (42) install in circuit board (41) orientation on the terminal surface of magnet (30), just circuit board (41) are when installing in the top of gas detection shell (10), will the top opening of gas detection shell (10) is sealed.
3. The gas flow monitoring device of claim 2, wherein the magnetic field detection assembly (40) further comprises: the mounting table (43), wherein the mounting table (43) is fixed on the end surface of the circuit board (41) facing the circuit board (41), and a metal shielding cavity (43 a) is arranged at the bottom of the mounting table (43);
the magnetic sensor (42) is fixed in the metal shielding cavity (43 a), and the magnetic sensor (42) is electrically connected with the processor.
4. A gas flow monitoring device according to claim 2, characterized in that the top of the flow plug (20) is fixedly connected to the magnet (30) by means of a support rod (21), and that an elastic element (44) is arranged between the magnet (30) and the circuit board (41).
5. The gas flow monitoring device according to claim 4, wherein two limiting plates (11 a) are sequentially arranged on the inner wall of the gas chamber (11) from top to bottom, and the magnet (30) is located between the two limiting plates (11 a).
6. A gas flow rate monitoring device according to claim 3, characterized in that first mounting holes are provided on both sides of the top end opening of the gas detection case (10), a second mounting hole (41 a) corresponding to the first mounting hole is provided on the circuit board (41), and the circuit board (41) is fixed on the gas detection case (10) by bolts screwed into the first and second mounting holes (41 a);
a supporting table (41 b) is arranged at the bottom of the circuit board (41), wherein the supporting table (41 b) is arranged along the width direction of the circuit board (41), a bulge (41 c) is respectively arranged at two sides of the supporting table (41 b) in the length direction, and the bulge (41 c) is parallel to the supporting table (41 b);
a first groove (43 b) is formed in the top of the mounting table (43), and a sliding groove (43 c) matched with the protrusion (41 c) is formed in the side wall of the first groove (43 b);
the bottom of the circuit board (41) is also provided with a signal line interface (41 d) electrically connected with the processor, and a signal line of the magnetic sensor (42) is spliced with the signal line interface (41 d).
7. The gas flow monitoring device of claim 1, wherein the flow plug (20) comprises: the gas slot device comprises a first plug body (22) and a second plug body (23) which are sequentially arranged from top to bottom, wherein the first plug body (22) is in sliding connection with the gas cavity (11) through a sliding assembly, and when gas does not enter the gas cavity (11), the second plug body (23) is positioned at the bottom of the gas cavity (11) and is attached to the inner wall of the gas cavity (11) so as to completely seal the wire slot (12).
8. The gas flow monitoring device of claim 7, wherein the slide assembly comprises: the gas combustion device comprises a sliding rail and a roller (50), wherein the roller (50) is arranged on the side wall, which is contacted with the gas combustion chamber (11), of the first plug body (22), a second groove (11 b) is formed in the side wall, which is contacted with the first plug body (22), of the gas combustion chamber (11), and the sliding rail matched with the roller (50) is arranged in the second groove (11 b).
9. A gas flow monitoring device according to claim 7, characterized in that the first plug body (22) has a rectangular cross-section and the second plug body (23) has a cross-sectional area that decreases gradually from top to bottom.
10. A gas flow monitoring device according to claim 1, characterized in that the trunking (12) is provided with at least 3 trunking (12) and that the cross-sectional area of each trunking (12) increases gradually from bottom to top.
CN202211610874.XA 2022-12-14 2022-12-14 Gas flow monitoring device Pending CN116428526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211610874.XA CN116428526A (en) 2022-12-14 2022-12-14 Gas flow monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211610874.XA CN116428526A (en) 2022-12-14 2022-12-14 Gas flow monitoring device

Publications (1)

Publication Number Publication Date
CN116428526A true CN116428526A (en) 2023-07-14

Family

ID=87078421

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211610874.XA Pending CN116428526A (en) 2022-12-14 2022-12-14 Gas flow monitoring device

Country Status (1)

Country Link
CN (1) CN116428526A (en)

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