CN111006136A - Gas leakage detection method of gas equipment and gas equipment - Google Patents

Gas leakage detection method of gas equipment and gas equipment Download PDF

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Publication number
CN111006136A
CN111006136A CN201911149036.5A CN201911149036A CN111006136A CN 111006136 A CN111006136 A CN 111006136A CN 201911149036 A CN201911149036 A CN 201911149036A CN 111006136 A CN111006136 A CN 111006136A
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China
Prior art keywords
gas
detection device
concentration
equipment
leakage
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CN201911149036.5A
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Chinese (zh)
Inventor
王冀海
姚龙平
杨坤
邴进东
才智
宋宜俊
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Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Priority to CN201911149036.5A priority Critical patent/CN111006136A/en
Publication of CN111006136A publication Critical patent/CN111006136A/en
Pending legal-status Critical Current

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    • 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
    • F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16—Combustible gas alarms

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The invention relates to the technical field of gas equipment, and discloses a gas leakage detection method of the gas equipment and the gas equipment, wherein a gas pipeline assembly is arranged in the gas equipment, the gas pipeline assembly is connected with a gas main pipe outside the gas equipment, the gas leakage detection device also comprises a gas leakage detection device, the gas leakage detection device comprises a first detection device and a second detection device, the first detection device is used for detecting the pressure or flow in the gas main pipe, the second detection device is used for detecting the pressure or flow in the gas pipeline assembly, and the gas leakage detection method comprises the following steps: acquiring detection values of a first detection device and a second detection device at the same moment and calculating a detection difference value; and judging whether the gas leaks or not according to the difference between the detection difference values at two continuous moments. The gas leakage detection method of the gas equipment judges whether the gas leaks according to the difference of the detection difference values of two continuous moments, and the gas leakage can be detected in time through the method. This gas equipment can in time detect out whether gas equipment leaks, avoids the emergence of incident.

Description

Gas leakage detection method of gas equipment and gas equipment
Technical Field
The invention relates to the technical field of gas equipment, in particular to a gas leakage detection method of gas equipment and the gas equipment.
Background
In the modern society, the use of gas equipment is very common, and great convenience is brought to the daily life of people. However, when a gas appliance, such as a gas clothes dryer, is in use, a gas valve and an indoor gas pipeline are not connected in place when being connected, so that gas leakage is easy to occur; the internal connection sealing element of the whole machine is aged, and gas leakage easily occurs.
The above problems are currently basically addressed by: the combustible gas detection device in the room of the clothes dryer is placed for detection, but the room where the gas clothes dryer is placed is generally as follows: garage, laundry, the space is great, takes the long time to detect the gas after the emergence is revealed and reveals, and gas dryer still is in operating condition during this, in case the condition that the misoperation probably explodes. Therefore, it is desirable to design a method for detecting gas leakage of a gas appliance to solve the above problems.
Disclosure of Invention
The invention aims to provide a gas leakage detection method of gas equipment and the gas equipment, and solves the problem that the existing gas equipment cannot detect gas leakage in time and is easy to cause danger.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a gas leakage detection method of gas equipment, wherein a gas pipeline assembly is arranged in the gas equipment, the gas pipeline assembly is connected with a gas main pipe outside the gas equipment, the gas leakage detection method also comprises a gas leakage detection device, the gas leakage detection device comprises a first detection device and a second detection device, the first detection device is used for detecting the pressure or flow in the gas main pipe, the second detection device is used for detecting the pressure or flow in the gas pipeline assembly, and the gas leakage detection method comprises the following steps:
acquiring detection values of the first detection device and the second detection device at the same moment and calculating a detection difference value; and judging whether the gas leaks or not according to the difference between the detection difference values at two continuous moments.
According to the gas leakage detection method of the gas equipment, the pressure or the flow of a gas main pipe is detected through a first detection device, the pressure or the flow in a gas pipeline assembly is detected through a second detection device, the detection values of the first detection device and the second detection device at the same moment are obtained, the detection difference value is calculated, whether gas leaks or not is judged according to the difference between the detection difference values at two continuous moments, and the gas leakage can be detected in time through the method.
As a preferable aspect of the gas leakage detection method for the gas appliance, when a difference between detection differences at two consecutive times is not less than a preset value, it is determined that gas is leaked. Whether the fuel gas leaks is judged through the mode, and the program is simple and convenient.
As a preferable embodiment of the gas leakage detection method for the gas appliance, when the gas appliance determines that gas is leaked, an alarm is issued, the gas main pipe is closed, and strong electricity in a space where the gas appliance is located is cut off. When the gas equipment judges that gas leaks, the gas equipment can timely perform feedback processing, and safety accidents are avoided.
As a preferable scheme of the gas leakage detection method for the gas equipment, the gas leakage detection device further includes a concentration detection device, the concentration detection device is disposed outside the gas equipment, the concentration detection device detects the concentration of the gas outside the gas equipment, when the detected concentration of the gas is greater than a first preset concentration, it is determined that the gas leaks, an alarm is given, the gas main pipe is closed, and the strong current in the space where the gas equipment is located is cut off. Whether gas equipment leaks the gas can be detected out through concentration detection device's setting, has strengthened the accuracy that detects.
As a preferable embodiment of the gas leakage detection method for the gas appliance, when the gas leakage detection device detects gas leakage, the gas appliance sends an alarm to close the gas main pipe and cut off strong electricity in the space where the gas appliance is located, the concentration detection device continues to detect the concentration of gas outside the gas appliance, and if the concentration of gas detected by the concentration detection device is greater than a second preset concentration, the gas appliance sends gas leakage information to the user terminal, where the second preset concentration is greater than the first preset concentration. Whether the trend that the gas aggravates the leakage exists after closing the gas main pipe can be judged through the concentration detection device, and corresponding feedback is made according to the detection result.
As a preferable scheme of the gas leakage detection method for the gas equipment, if the gas concentration detected by the concentration detection device is greater than a preset maximum value, the gas equipment sends gas leakage information to a community property and/or a fire department system. When the gas concentration is greater than the preset maximum value, the gas leakage is serious, and the gas leakage information is sent to the district property and/or fire department system to remind and process the leakage.
As a preferred embodiment of the gas leakage detection method for the gas appliance, the gas appliance is powered on, and whether a detection difference between the first detection device and the second detection device is smaller than a preset leakage value is determined, and if so, the gas appliance is not leaked currently. Whether the detection difference value is smaller than a preset leakage value or not is judged through the first detection device and the second detection device after the gas equipment is powered on, so that the leakage state is avoided when the gas equipment is started, and the condition that the gas equipment cannot be detected through follow-up detection is avoided.
The invention also provides gas equipment, wherein a gas pipeline assembly is arranged in the gas equipment, the gas pipeline assembly is connected with a gas main pipe outside the gas equipment, and the gas equipment further comprises a gas leakage detection device, the gas leakage detection device comprises a first detection device and a second detection device, the first detection device is configured to detect the pressure or flow in the gas main pipe, and the second detection device is configured to detect the pressure or flow in the gas pipeline assembly. This gas equipment is through first detection device and second detection device's setting, can in time detect out whether gas equipment leaks, avoids the emergence of incident.
As an optimal scheme of the above gas equipment, the gas pipeline assembly includes a gas valve and a gas pipeline, one end of the gas pipeline is connected to the gas valve through a quick coupling, the other end of the gas pipeline is connected to a gas main pipe, the first detection device is arranged between the gas main pipe and the gas pipeline or in the gas main pipe, and the second detection device is arranged between the quick coupling and the gas valve. By providing the first and second detection means at the above-described positions, it is possible to detect a leak between the gas main and the gas valve.
As a preferable mode of the gas appliance, the gas leakage detection device further includes a concentration detection device provided outside the gas appliance, and the concentration detection device is configured to detect a concentration of the gas outside the gas appliance. The concentration detection device further enhances the detection accuracy and is convenient for processing the gas leakage.
The invention has the beneficial effects that:
according to the gas leakage detection method for the gas equipment, the pressure or the flow of a gas main pipe is detected through a first detection device, the pressure or the flow in a gas pipeline assembly is detected through a second detection device, the detection values of the first detection device and the second detection device at the same moment are obtained, the detection difference value is calculated, whether gas leaks or not is judged according to the difference between the detection difference values at two continuous moments, and the gas leakage can be detected in time through the method.
According to the gas equipment provided by the invention, whether the gas equipment leaks can be detected in time through the arrangement of the first detection device and the second detection device, so that safety accidents are avoided.
Drawings
Fig. 1 is a flowchart of a gas leakage detection method of a gas appliance according to an embodiment of the present invention;
fig. 2 is a flowchart of a gas leakage detection method for a gas appliance according to a second embodiment of the present invention;
fig. 3 is a flowchart of a gas leakage detection method for a gas appliance according to a third embodiment of the present invention;
fig. 4 is a flowchart of a gas leakage detection method of a gas appliance according to a fourth embodiment of the present invention;
fig. 5 is a flowchart of a gas leakage detection method for gas equipment according to a fifth embodiment of the present invention.
Fig. 6 is a schematic structural view of an air duct assembly in the clothes drying apparatus according to the sixth embodiment of the present invention.
In the figure:
1. a gas valve; 2. a gas pipeline; 3. a quick coupling; 4. and (4) a valve.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The first embodiment is as follows:
when the gas equipment is used, the gas valve and the indoor gas pipeline are not connected in place when being connected, and gas leakage can occur; the ageing of the internal connection sealing element of the whole machine can also cause gas leakage. The gas detection device arranged outside the gas equipment is usually used for detection in the prior art, and the gas equipment cannot timely detect the leakage of gas when being placed in a larger space, so that safety accidents are easily caused. In order to solve the above problem, this embodiment provides a gas leakage detection method for a gas device, in which a gas pipeline assembly is disposed in the gas device, the gas pipeline assembly is connected to a gas main outside the gas device, and the gas main is a gas supply pipeline capable of supplying gas to a plurality of gas devices in a space where the gas device is located.
The gas equipment also comprises a gas leakage detection device, and the gas leakage detection device comprises a first detection device for detecting the pressure or flow in the gas main pipe and a second detection device for detecting the pressure or flow in the gas pipeline assembly. As shown in fig. 1, the gas leakage detection method includes the steps of:
and S11, acquiring detection values of the first detection device and the second detection device at the same moment and calculating a detection difference value.
And S12, judging whether the gas leaks or not according to the difference between the detection difference values at two continuous moments.
Alternatively, the first detection device and the second detection device may each include a pressure sensor, and both detect pressure values at two positions at the same time, calculate a pressure difference, and determine whether the gas leaks according to the detected pressure difference values at two consecutive times.
The first detection device and the second detection device can also comprise flow sensors, the flow values of the two positions are detected at the same moment, the flow difference is calculated, and whether the gas leaks or not is judged according to the detected flow difference value of the two continuous moments.
According to the gas leakage detection method of the gas equipment, the pressure or the flow of a gas main pipe is detected through a first detection device, the pressure or the flow in a gas pipeline assembly is detected through a second detection device, the detection values of the first detection device and the second detection device at the same moment are obtained, the detection difference value is calculated, whether gas leaks or not is judged according to the difference between the detection difference values at two continuous moments, and the gas leakage can be detected in time through the method.
Example two:
the present embodiment provides a gas leakage detection method for a gas appliance, which is an improvement on the first embodiment, and the present embodiment takes the first detection device and the second detection device to detect gas pressure as an example for description. In this case, the first and second detection means each comprise a pressure sensor.
The gas pipeline subassembly includes gas valve and gas pipeline, and the one end of gas pipeline is passed through quick-operation joint and is linked to each other with the gas valve, and the other end and the gas house steward of gas pipeline link to each other, and in this embodiment, first detection device sets up between gas house steward and gas pipeline or sets up in the gas house steward, and second detection device sets up between quick-operation joint and gas valve. As shown in fig. 2, the gas leakage detection method includes the steps of:
and S21, powering on the gas equipment.
S22, acquiring the pressure value PA detected by the first detection device at the time of T00And a pressure value PB detected by the second detection means0And calculates a difference value △ P of the detected pressure values0＝PA0-PB0。
S23, acquiring the pressure value PA detected by the first detection device at the time of T11And a pressure value PB detected by the second detection means1And calculates a difference value △ P of the detected pressure values1＝PA1-PB1。
S24, judgment △ P1-△P0If < C is true, where C is a preset pressure value.
And S25, if the situation is not met, judging that the gas leaks, giving an alarm, closing a gas main pipe, and cutting off the strong electricity in the space where the gas equipment is located.
If true, △ P will be1Value assignment to △ P0,And returns to S23.
The gas equipment is powered on to obtain a difference value △ P of the detected pressure value0＝PA0-PB0Then the difference △ P between the first and second detection devices can be determined0If the pressure value is smaller than the preset leakage pressure value, the gas equipment is not leaked currently, so that the leakage state is avoided when the gas equipment is started, the condition that the gas leakage cannot be detected through subsequent detection is further avoided, when the gas leaks, an alarm is given out, a gas main pipe is closed, the strong current in the space where the gas equipment is located is cut off, and when the pressure value is △ P0And when the pressure value is smaller than the preset leakage pressure value, the leakage state of the gas is continuously detected through the first detection device and the second detection device.
Example three:
the present embodiment provides a gas leakage detection method for a gas appliance, which is an improvement on the first embodiment, and the present embodiment takes the first detection device and the second detection device to detect the gas flow as an example for description. At this time, the first and second detection means each include a flow sensor. As shown in fig. 3, the gas leakage detection method includes the steps of:
and S31, powering on the clothes drying equipment.
S32, acquiring the flow value FA detected by the first detection device at the time of T00And a flow rate value FB detected by the second detection means0And calculates a difference △ F between the detected flow rate values0＝FA0-FB0。
S33, acquiring the flow value FA detected by the first detection device at the time of T11And a flow rate value FB detected by the second detection means1And calculates a difference △ F between the detected flow rate values1＝FA1-FB1。
S34, judgment △ F1-△F0If < D is true, where D is a preset flow value.
S351, if the situation is not met, the situation that the fuel gas leaks is judged, an alarm is given out, a fuel gas main pipe is closed, and strong electricity in the space where the fuel gas equipment is located is cut off.
If true, △ F1Value assignment to △ F0,And returns to S33.
The gas equipment is powered on, and the difference value △ F of the detected pressure value is obtained0＝FA0-FB0Then the difference △ F between the first and second detection devices can be determined0If the current leakage flow value is less than the preset leakage flow value, the current leakage of the gas equipment is indicated if the current leakage flow value is less than the preset leakage flow value, so that the leakage state is avoided when the gas equipment is started, and the condition that the gas equipment cannot be detected through subsequent detection is further avoided0And when the leakage flow value is smaller than the preset leakage flow value, the leakage state of the gas is continuously detected through the first detection device and the second detection device.
Example four:
the embodiment provides a gas leakage detection method for gas equipment, which is a further extension of any one of the above embodiments, wherein the gas leakage detection device further comprises a concentration detection device, the concentration detection device is arranged outside the gas equipment, and the concentration detection device assists the first detection device and the second detection device in detecting gas leakage, that is, in the detection process of the first detection device and the second detection device, the concentration detection device assists in detecting gas leakage outside the gas equipment by detecting gas concentration. Optionally, the concentration detection means comprises a concentration sensor. As shown in fig. 4, the gas leakage detection method includes the steps of:
and S41, detecting the gas concentration outside the gas equipment through the concentration detection device.
And S42, judging whether the detected gas concentration is greater than a first preset concentration.
And S43, if yes, judging that the gas leaks, giving an alarm, closing a gas main pipe, and cutting off strong electricity in the space where the gas equipment is located.
Whether gas equipment leaks the gas can be detected out through concentration detection device's setting, has strengthened the accuracy that detects.
And S44, when the gas leakage detection device detects gas leakage, the gas equipment gives an alarm, the gas main pipe is closed, strong electricity in the space where the gas equipment is located is cut off, and the concentration detection device continues to detect the concentration of the gas outside the gas equipment.
And S45, judging whether the gas concentration detected by the concentration detection device is greater than a second preset concentration. Wherein the second preset concentration is greater than the first preset concentration.
And S46, if yes, the gas equipment sends gas leakage information to the user terminal, whether gas leakage still exists after the gas main pipe is closed can be judged through the concentration detection device, and corresponding feedback is made according to a detection result. When the detected gas concentration is higher than the second preset concentration, the gas leakage is still caused after the gas main pipe is closed, and the gas leakage information is sent to the user terminal for the gas leakage gas equipment to remind the user in time.
If not, the process returns to S44.
And S47, judging whether the gas concentration detected by the concentration detection device is greater than a preset maximum value.
And S481, if yes, the gas equipment sends gas leakage information to the community property and/or the fire department system.
When the gas concentration is greater than the preset maximum value, the gas leakage is serious, and the gas leakage information is sent to the district property and/or fire department system to remind and process the leakage. The preset maximum value is greater than the second preset concentration value.
If not, S482 continues to detect the gas concentration outside the gas appliance by the concentration detection device, and the flow returns to S47.
Example five:
the present embodiment provides a gas leakage detection method for a gas appliance, taking detection of gas pressure by a first detection device and a second detection device as an example, and performing gas leakage detection by using two detection methods, as shown in fig. 5, the gas leakage detection method includes the following steps:
and S51, powering on the gas equipment.
After the gas equipment is powered on, the gas equipment detects the leakage of gas in two modes, namely a first detection device, a second detection device and a concentration detection device.
The gas equipment detects the leakage of gas through the first detection device and the second detection device, and comprises the following steps:
s5211, obtaining a pressure value PA detected by the first detection device at the time T00And a pressure value PB detected by the second detection means0And calculates a difference value △ P of the detected pressure values0＝PA0-PB0。
The gas equipment is powered on, and the difference value △ P of the pressure value is detected0＝PA0-PB0And determines a difference △ P between the first and second detecting means0Whether the pressure value is smaller than the preset leakage pressure value or not, if so, the gas equipment is not leaked currently, so that the leakage state is avoided when the gas equipment is started, and the condition that the gas equipment cannot be detected through follow-up detection is avoided.
S5212, obtaining a pressure value PA detected by the first detection device at the time T11And a pressure value PB detected by the second detection means1And calculates a difference value △ P of the detected pressure values1＝PA1-PB1。
S5213, judgment △ P1-△P0If < C is true, where C is a preset pressure value.
If not, the process proceeds to step S53.
If true, △ P will be1Value assignment to △ P0,And returns to S5212.
The method for judging whether the gas leaks through the concentration detection device comprises the following steps:
and S5221, detecting the gas concentration by a concentration detection device.
S5222, judging whether the detected gas concentration is greater than a first preset concentration.
If yes, the process proceeds to step S53.
If not, the process returns to S5221.
And S53, judging that the gas leaks, giving an alarm, closing a gas main pipe, and cutting off strong electricity in the space where the gas equipment is located.
And S54, continuously detecting the gas concentration outside the gas equipment through the concentration detection device.
And S55, judging whether the gas concentration detected by the concentration detection device is greater than a second preset concentration. Wherein the second preset concentration is greater than the first preset concentration.
And S56, if yes, the gas equipment sends gas leakage information to the user terminal.
If not, the process returns to step S54.
Whether gas leaks after the gas main pipe is closed can be judged through the concentration detection device, and corresponding feedback is made according to a detection result.
And S57, judging whether the gas concentration detected by the concentration detection device is greater than a preset maximum value.
And S581, if so, the gas equipment sends gas leakage information to the community property and/or fire department system.
When the gas concentration is greater than the preset maximum value, the gas leakage is serious, and the gas leakage information is sent to the district property and/or fire department system to remind and process the leakage.
If not, the process continues to detect the gas concentration outside the gas appliance by the concentration detection, and then returns to S57.
Of course, the gas leakage is determined by detecting the pressure value through the first detection device and the second detection device, and the gas leakage may also be determined by detecting the flow value through the first detection device and the second detection device, and the specific process is shown in fig. 3 and is not described herein again.
Example six:
the invention further provides a gas device, which detects whether gas leaks by adopting the gas leakage detection method of the gas device in any embodiment, wherein a gas pipeline assembly is arranged in the gas device, the gas pipeline assembly is connected with a gas main pipe outside the gas device, the gas device further comprises a gas leakage detection device, the gas leakage detection device comprises a first detection device and a second detection device, the first detection device is configured to detect the pressure or flow in the gas main pipe, and the second detection device is configured to detect the pressure or flow in the gas pipeline assembly. This gas equipment is through first detection device and second detection device's setting, can in time detect out whether gas equipment leaks, avoids the emergence of incident.
As shown in fig. 6, the gas pipeline assembly includes a gas valve 1 and a gas pipeline 2, one end of the gas pipeline 2 is connected to the gas valve 1 through a quick coupling 3, the other end of the gas pipeline 2 is connected to a gas main (not shown in the figure), a first detection device is arranged between the gas main and the gas pipeline 2 or in the gas main, and a second detection device is arranged between the quick coupling 3 and the gas valve 1. By providing the first and second detection means at the above-described positions, it is possible to detect a leak between the gas main and the gas valve 1.
Optionally, a valve 4 is further disposed on the gas pipeline 2, and the second detection device may also be disposed on two sides of the valve 4. In this embodiment, the second detection device is provided between the quick coupling 3 and the gas valve 1, and thus the gas leakage between the gas valve 1 and the gas main can be detected by the first detection device and the second detection device.
When the concentration detection is required, the gas leakage detection device further comprises a concentration detection device, the concentration detection device is arranged outside the gas equipment, and the concentration detection device is configured to detect the gas concentration outside the gas equipment. The concentration detection device further enhances the detection accuracy and is convenient for processing the gas leakage.
Alternatively, a plurality of second detection devices may be provided on the gas duct assembly, by which the position of the leak can be detected. That is, a second detection device can be arranged between the gas pipeline 2 and the quick coupling 3, between the quick structure and the gas pipeline 2 or at other joints. The gas leakage detection method in any of the above embodiments may be used to detect whether any position leaks, so as to determine the position of gas leakage.
In this embodiment, the gas appliance is a gas dryer.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or a positional relationship based on the orientation shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. The utility model provides a gas equipment's gas leakage detection method, be provided with gas pipeline subassembly in the gas equipment, gas pipeline subassembly with the outside gas house steward of gas equipment links to each other, its characterized in that still includes gas leakage detection device, gas leakage detection device is including the first detection device that is used for detecting pressure or flow in the gas house steward to and be used for detecting the second detection device of pressure or flow in the gas pipeline subassembly, gas leakage detection method includes following step:
acquiring detection values of the first detection device and the second detection device at the same moment and calculating a detection difference value; and judging whether the gas leaks or not according to the difference between the detection difference values at two continuous moments.
2. The gas leakage detection method of a gas appliance according to claim 1, wherein when a difference between detection differences at two consecutive times is not less than a preset value, it is determined that gas is leaked.
3. The gas leakage detection method for a gas appliance according to claim 2, wherein when the gas appliance determines that gas is leaked, an alarm is issued to shut down the gas main pipe and cut off strong electricity in a space where the gas appliance is located.
4. The gas leakage detection method for a gas appliance according to any one of claims 1 to 3, wherein the gas leakage detection device further includes a concentration detection device, the concentration detection device is provided outside the gas appliance, the concentration detection device detects the concentration of the gas outside the gas appliance, and when the detected gas concentration is higher than a first preset concentration, it is determined that gas is leaked, an alarm is given, the gas main pipe is closed, and the strong electricity in the space where the gas appliance is located is cut off.
5. The gas leakage detection method of a gas appliance according to claim 4, wherein when the gas leakage detection device detects gas leakage, the gas appliance issues an alarm to shut off the gas main pipe and cut off strong electricity in the space where the gas appliance is located, the concentration detection device continues to detect the concentration of gas outside the gas appliance, and if the concentration of gas detected by the concentration detection device is greater than a second preset concentration, the gas appliance sends gas leakage information to the user terminal, wherein the second preset concentration is greater than the first preset concentration.
6. The gas leakage detection method of a gas appliance according to claim 4, wherein if the gas concentration detected by the concentration detection device is greater than a preset maximum value, the gas appliance sends gas leakage information to a community property and/or a fire department system.
7. The gas leakage detection method for the gas equipment according to any one of claims 1 to 3, wherein the gas equipment is powered on, whether a detection difference between the first detection device and the second detection device is smaller than a preset leakage value or not is judged, and if yes, the gas equipment is not leaked currently.
8. The utility model provides a gas equipment, its characterized in that, be provided with gas pipeline subassembly in the gas equipment, gas pipeline subassembly with the outside gas house steward of gas equipment links to each other, still includes gas leakage detection device, gas leakage detection device includes first detection device and second detection device, first detection device is configured and detects gas house steward internal pressure or flow, the second detection device is configured and detects gas pipeline subassembly internal pressure or flow.
9. The gas appliance according to claim 8, characterized in that said gas conduit assembly comprises a gas valve (1) and a gas conduit (2), one end of said gas conduit (2) being connected to said gas valve (1) by means of a quick coupling (3), the other end of said gas conduit (2) being connected to said gas main, said first detection means being arranged between said gas main and said gas conduit (2) or inside said gas main, said second detection means being arranged between said quick coupling (3) and said gas valve (1).
10. The gas appliance according to claim 8, wherein the gas leakage detecting means further comprises concentration detecting means provided outside the gas appliance, the concentration detecting means being configured to detect a concentration of the gas outside the gas appliance.
CN201911149036.5A 2019-11-21 2019-11-21 Gas leakage detection method of gas equipment and gas equipment Pending CN111006136A (en)

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