CN117990445A - Harmful gas intelligent acquisition test system and method - Google Patents
Harmful gas intelligent acquisition test system and method Download PDFInfo
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- CN117990445A CN117990445A CN202410141375.3A CN202410141375A CN117990445A CN 117990445 A CN117990445 A CN 117990445A CN 202410141375 A CN202410141375 A CN 202410141375A CN 117990445 A CN117990445 A CN 117990445A
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Abstract
The invention provides an intelligent harmful gas collection and test system and method, wherein the test system comprises a sensor assembly, an industrial control and remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen; when the test system is in the airtight test, the pressure transmitter detects pressure readings at intervals of a preset time threshold; when the test system is in a well flushing test, the combustible gas detector detects the concentration of the combustible gas; when the test system is in a gas sample collection mode, the mass flowmeter collects gas flow; when the change of the pressure reading is smaller than a preset pressure threshold, the air tightness of the test system meets the technical requirements; when the concentration of the combustible gas exceeds a preset gas threshold value, generating alarm information; when the gas flow reaches a preset flow threshold, the testing system is automatically closed, and the display screen is controlled to display prompt information that the sampling work is completed.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to an intelligent harmful gas collection and test system and method.
Background
At present, the acquisition equipment has no automatic control device and cannot complete automatic control acquisition detection. The method for sampling and detecting is that after soil gas collection or landfill gas collection, manual counting collection is carried out by manually connecting pipelines, meters and the like on site, the original monitoring point position pipeline connection is required to be removed for different-place collection, then the next monitoring point position is reconnected, and the existing equipment is large in size and cannot automatically control well flushing, adjust extraction flow, measure and detect combustibility; the field control and the unattended operation function cannot be realized.
Disclosure of Invention
In view of the above, the invention aims to provide an intelligent harmful gas collection and test system and method, which are suitable for use under the working condition that combustible gas exists, are highly integrated and automatic, and are suitable for unattended operation.
In a first aspect, an embodiment of the invention provides an intelligent harmful gas collection and test system, which comprises a sensor assembly, an industrial control and remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen;
The pressure transmitter is used for detecting pressure readings at intervals of a preset time threshold when the test system is in the air tightness test and sending the pressure readings to the PLC industrial control system;
The combustible gas detector is used for detecting the concentration of the combustible gas when the testing system is in a well flushing test and sending the concentration of the combustible gas to the PLC industrial control system;
The mass flowmeter is used for collecting gas flow when the test system is in a gas sample collection mode and sending the gas flow to the PLC industrial control system;
The PLC industrial control system is used for judging whether the change of the pressure reading is smaller than a preset pressure threshold value, and if so, the air tightness of the test system meets the technical requirements;
judging whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, generating alarm information; if not, stopping the well flushing test;
when the gas flow reaches a preset flow threshold, the testing system is automatically closed, and the display screen is controlled to display prompt information that the sampling work is completed.
Further, the industrial control and remote transmission assembly further comprises a wireless communication module;
and the wireless communication module is used for uploading the pressure reading, the combustible gas concentration and the gas flow to a cloud server or a handheld device through an MQTT protocol.
Further, the handheld device is used for acquiring the setting of the parameters on the interface by the user; wherein the parameters include: the method comprises the steps of sampling gas total amount, sampling flow, sampling time, remote reminding information after sampling, gas washing time and frequency before sampling and negative pressure set value during air tightness detection.
Further, the test system also comprises a shell, pipeline equipment and an adsorption pipe, wherein the shell, pipeline equipment comprises a box body, an inlet angle valve, an outlet angle valve, a vacuum diaphragm pump, a gas impurity filter and a pipeline;
the air inlet end of the inlet angle valve is connected with a hose quick connector and then connected with a hose of the air inlet to be tested;
the rear end of the inlet angle valve is connected with a male head of the gas quick connector and is connected with a female head of the gas quick connector on the box body panel.
Further, the rear end of the female head of the gas quick connector on the box body panel is connected with the hose and the pipeline;
The pipeline is connected with the gas impurity filter, the mass flowmeter, the pressure transmitter and the combustible gas detector in sequence through the pipe joint, and then is connected with the outlet angle valve through the hose.
Further, the rear end of the outlet angle valve is connected with a quick-twisting joint of the hose and is connected with the adsorption tube after being connected with a medical silicone tube;
The rear end of the adsorption tube is connected with the silica gel tube, and the rear end of the silica gel tube is connected with the quick-screwing joint of the hose at the upper part of the box body panel;
The quick-screwing connector arranged at the lower part of the box panel is connected with the air inlet end of the vacuum diaphragm pump, so that a complete gas conveying and sampling route is formed.
Further, the test system further comprises an antenna;
the wireless communication module is connected with the PLC industrial control system through a serial port and is packaged in the protective shell;
The wireless communication module is connected with the antenna, and the PLC industrial control system is connected with the display screen in an SPI transmission mode; wherein the wireless communication module is NB-IoT.
In a second aspect, an embodiment of the present invention provides a method for intelligently collecting and testing harmful gases, which is applied to the above-mentioned intelligent collecting and testing system for harmful gases, where the testing system includes a sensor assembly, an industrial control and a remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen;
When the test system is in the airtight test, the pressure transmitter detects pressure readings at intervals of a preset time threshold value and sends the pressure readings to the PLC industrial control system;
When the test system is in a well flushing test, the combustible gas detector detects the concentration of the combustible gas and sends the concentration of the combustible gas to the PLC industrial control system;
when the testing system is in a gas sample collection mode, the mass flowmeter collects gas flow and sends the gas flow to the PLC industrial control system;
The PLC industrial control system judges whether the change of the pressure reading is smaller than a preset pressure threshold value, and if so, the air tightness of the test system meets the technical requirements;
the PLC industrial control system judges whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, generates alarm information; if not, stopping the well flushing test;
And the PLC industrial control system is automatically closed under the condition that the gas flow reaches a preset flow threshold value, and controls the display screen to display prompt information that the sampling work is completed.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, and a processor, where the memory stores a computer program executable on the processor, and where the processor implements a method as described above when executing the computer program.
In a fourth aspect, embodiments of the present invention provide a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method as described above.
The embodiment of the invention provides an intelligent harmful gas collection and test system and method, wherein the test system comprises a sensor assembly, an industrial control and remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen; the pressure transmitter is used for detecting pressure readings at preset time threshold values when the test system is in the air tightness test and transmitting the pressure readings to the PLC industrial control system; the combustible gas detector is used for detecting the concentration of the combustible gas when the testing system is in a well flushing test and sending the concentration of the combustible gas to the PLC industrial control system; the mass flowmeter is used for collecting gas flow when the testing system is in a gas sample collection mode and sending the gas flow to the PLC industrial control system; the PLC industrial control system is used for judging whether the change of the pressure reading is smaller than a preset pressure threshold value, and if so, the air tightness of the test system meets the technical requirements; judging whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, generating alarm information; if not, stopping the well flushing test; when the gas flow reaches a preset flow threshold, the testing system is automatically closed, and the display screen is controlled to display prompt information that the sampling work is completed; the device is suitable for being used under the working condition of the existence of combustible gas, is highly integrated and automatic, and is suitable for unattended operation.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an intelligent collection and test system for harmful gases according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a system for intelligent collection and testing of harmful gases according to an embodiment of the present invention;
FIG. 3 is a process diagram of an intelligent collection and test system for harmful gases according to a first embodiment of the present invention;
fig. 4 is a flowchart of a method for intelligent collection and testing of harmful gases according to a second embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Monitoring volatile organic pollution deposition gas: the Volatile Organic Compounds (VOCs) in the polluted land block cause harm to human health, the result of the respiratory exposure risk model prediction by the concentration of the VOCs in the soil and the underground water is too conservative and has larger uncertainty, and the land block can be excessively repaired, so that the soil pollution repair target value can be determined by adopting a soil gas collection test and selecting a soil gas VOCs concentration risk evaluation method aiming at the analysis and evaluation of the volatile organic pollutants in the land block. Soil gas monitoring work can be carried out on key facilities of volatile organic compounds or key areas where the key facilities are located in the enterprises, and environmental conditions and changing conditions of soil and groundwater in the areas of the enterprises are represented.
Landfill gas monitoring of a landfill site: in the process of long-term stacking and decomposing of garbage in a garbage landfill, flammable and toxic harmful gases such as methane, hydrogen sulfide, ammonia, carbon monoxide, carbon dioxide and the like and malodorous gases such as hydrogen sulfide, methyl mercaptan and the like can be generated, so that the standardization of the landfill gas in the garbage landfill needs to be monitored regularly and safely and the safety and public opinion early warning needs to be provided timely.
NB-IoT industrial internet of things technology: namely, the narrowband internet of things, NB-IoT is built in a cellular network, consumes only about 180KHz of bandwidth, and can be directly deployed in a GSM network, a UMTS network or an LTE network. For the working conditions of plots such as field or remote industrial areas, barren industrial sites and the like, the NB-Io has the advantages of wide deployment area (can be directly connected with the existing 2G/3G/4G base station network), flexible use mode (can be connected with a field signal base station, a handheld equipment end of field operators and a remote control room WIFI), low equipment power consumption and the like.
Intrinsically safe industrial control device: the intrinsically safe type is an explosion-proof version of an electrical apparatus that limits the energy of the electric spark or thermal effect that may be generated by the interior of the apparatus and by the connection wires exposed to a potentially explosive environment to a level where ignition cannot occur. The explosion-proof performance of the intrinsically safe equipment is not realized by adopting external measures such as ventilation, inflation, oil filling, explosion suppression and the like, but is realized by a circuit, is intrinsically safe, is suitable for being used under the working conditions such as a landfill site, a tailing pond and the like in which flammable gas possibly exists, and can be maintained and adjusted under the condition of electrifying.
The PLC industrial control system adopts an integrated programmable control system based on a Microcontroller (MCU), and the data collected by each instrument is analyzed and processed in real time and then is sent to a handheld device end of a field worker or is remotely transmitted to a cloud end, so that the PLC industrial control system is suitable for unattended remote operation under working conditions with personal health safety risks.
The application relates to a gas collection and test system widely used for sites such as soil deposition gas of polluted land blocks, landfill sites and the like which generate landfill gas. The test system has high automation and can realize safe automatic acquisition and quick test on the premise of meeting national technical specifications.
In order to facilitate understanding of the present embodiment, the following describes embodiments of the present invention in detail.
Embodiment one:
Fig. 1 is a schematic diagram of an intelligent collection and test system for harmful gases according to an embodiment of the present invention.
Referring to FIG. 1, the test system includes a sensor assembly, an industrial control and a telemetry assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen;
The pressure transmitter is used for detecting pressure readings at intervals of a preset time threshold when the test system is in the air tightness test and transmitting the pressure readings to the PLC industrial control system;
the combustible gas detector is used for detecting the concentration of the combustible gas and sending the concentration of the combustible gas to the PLC industrial control system when the testing system is in a well flushing test;
The mass flowmeter is used for collecting gas flow when the testing system is in a gas sample collection mode and sending the gas flow to the PLC industrial control system;
the PLC industrial control system is used for judging whether the change of the pressure reading is smaller than a preset pressure threshold value, and if so, the air tightness of the test system meets the technical requirements;
Judging whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, generating alarm information; if not, stopping the well flushing test;
when the gas flow reaches a preset flow threshold, the testing system is automatically closed, and the display screen is controlled to display prompt information that the sampling work is completed.
Further, the industrial control and remote transmission assembly further comprises a wireless communication module;
And the wireless communication module is used for uploading the pressure reading, the combustible gas concentration and the gas flow to the cloud server or the handheld device through the MQTT protocol.
Specifically, the power-on is conducted, after the self-checking of the display screen is completed, the test system is adjusted to be airtight through touch of the display screen or APP (system interaction mode consistency) of the handheld device, an outlet angle valve D2 is installed in the system, an inlet valve is closed, a vacuum diaphragm pump D3 is used for vacuumizing after the pipeline connection, and the outlet valve is closed after the pressure reading of the display screen is minus 35KPa or the reading is stable.
Clicking the air tightness test button, continuously observing the pressure readings for 5min and recording the readings every 1min (the data system automatically stores and displays). If the change of the pressure reading is smaller than the preset pressure threshold (which can be set to 1.5 KPa), the air tightness of the sampling system meets the technical requirements, otherwise, the joints should be checked one by one until the air tightness of the system meets the technical requirements.
Well flushing test before sampling: after the power-on is started and the self-checking of the observation display screen is completed, the test system is adjusted to a well flushing test mode, the outlet angle valve D2 is installed in the system, and the inlet and outlet valves are opened.
Clicking a well flushing test button, starting a vacuum diaphragm pump D3 by the system, keeping the well flushing flow not higher than 200ml/min, keeping the system pressure not higher than 2.5KPa, monitoring the concentration change of combustible gas by the system (automatically storing and displaying by a data system), and stopping the well flushing test after the parameters meet the technical requirements of the well flushing test.
After the well flushing test, the system is adjusted to a gas sample collection mode, and after the sampling flow value is set, a gas sample collection object (defaults to an adsorption tube) is installed to an outlet valve.
Clicking a gas sample collection button, starting a vacuum diaphragm pump D3 by the system, keeping the well flushing flow not higher than 200ml/min, keeping the system pressure not higher than 2.5KPa, automatically closing the test system after the gas flow reaches a preset flow threshold, and prompting that the sampling work is completed by a display screen (automatically storing and displaying a data system). The sample can be properly stored and sent to a laboratory for detection and analysis.
In the whole process of starting up and powering up, the combustible gas detector is always operated on line, and if the combustible gas detector exceeds a preset gas threshold value, the combustible gas detector can prompt and alarm.
The test system can upload to the cloud server by adopting the MQTT protocol through the data uploading button or automatically upload after parameter setting, so as to realize unmanned operation.
Specifically, referring to FIG. 2, the sensor assembly includes a mass flow meter A1, a pressure transmitter A2, and a combustible gas detector A3; the industrial control and remote transmission assembly comprises a wireless communication module B1, a PLC industrial control system B2, an antenna B3 and a display screen B4; the power supply is a 12V lithium battery pack; the shell and pipeline equipment comprises a box body D1, an outlet angle valve D2, a vacuum diaphragm pump D3, a gas impurity filter D4, a pipeline D5 and accessories, wherein the accessories are connected with the pipeline D5 and an inlet angle valve D6; and an adsorption tube E1.
Further, the handheld device is used for acquiring the setting of the parameters on the interface by the user; wherein the parameters include: the method comprises the steps of sampling gas total amount, sampling flow, sampling time, remote reminding information after sampling, gas washing time and frequency before sampling and negative pressure set value during air tightness detection.
Specifically, the PLC industrial control system B2 is matched with a touch screen, and the operations of parameter setting, automatic running of a test system, data storage uploading and the like are realized through screen touch; and (3) matching with an APP of the handheld device, and modulating an AP mode by the transmission module for the handheld device to access and operate.
Further, referring to fig. 3, the test system further includes a housing and pipe apparatus and an adsorption pipe E1, the housing and pipe apparatus including a case D1, an outlet angle valve D2, a vacuum diaphragm pump D3, a gas impurity filter D4, and a pipe D5;
the air inlet end of the inlet angle valve D2 is connected with a hose of the air inlet to be tested after being connected with a hose quick connector;
The rear end of the inlet angle valve is connected with the male head of the gas quick connector and is connected with the female head of the gas quick connector on the panel of the box body D1.
Further, the rear end of the female head of the gas quick connector on the panel of the box body D1 is connected with a hose and is connected with a pipeline D5;
The pipeline D5 is sequentially connected with the gas impurity filter D4, the mass flowmeter A1, the pressure transmitter A2 and the combustible gas detector A3 through pipe joints, and is connected with the outlet angle valve D2 through a hose. The connection modes of the outlet angle valve D2 and the inlet angle valve D6 are consistent, and the quick-change structure is composed of quick connectors.
Further, the rear end of the outlet angle valve D2 is connected with a quick-twisting joint of a hose and is connected with an adsorption tube after being connected with a medical silicone tube;
the rear end of the adsorption tube E1 is connected with a silica gel tube, and the rear end of the silica gel tube is connected with a quick-screwing joint of a hose at the upper part of a panel of the box body D1;
The quick-screw joint arranged at the lower part of the panel of the box body D1 is connected with the air inlet end of the vacuum diaphragm pump D3, so that a complete gas conveying and sampling route is formed.
The 12V lithium battery pack supplies power to all instruments and equipment through a power distributor (3.3V, 5V and 12V are adjustable), namely a wireless communication module B1, a PLC industrial control system B2, a display screen B4, a mass flowmeter A1, a pressure transmitter A2, a combustible gas detector A3 and a vacuum diaphragm pump D3.
Further, the test system further comprises an antenna;
The wireless communication module B1 is connected with the PLC industrial control system B2 through a serial port and is packaged in the protective shell;
The wireless communication module B1 is connected with the antenna B3, and the PLC industrial control system B2 is connected with the display screen B4 in an SPI transmission mode; the wireless communication module B1 is NB-IoT. An operator uses the display screen for field data browsing and system control.
The mass flowmeter A1, the pressure transmitter A2 and the combustible gas detector A3 adopt matched signal lines to input 4-20mA or 0-5V analog quantity into the PLC industrial control system B2; the vacuum diaphragm pump D3 adopts a matched signal line to input 4-20mA or 0-5V analog quantity into the PLC industrial control system B2, and meanwhile, the PLC industrial control system B2 uses a PWM (pulse-width modulation) regulation mode to regulate and control the gas flow.
The box D1 is matched with the operation panel and the supporting piece, the components are all fixed on the supporting piece of the box D1 (the display screen is fixed with the panel), and bolt holes are formed in the periphery of the panel so as to facilitate equipment replacement and maintenance.
The industrial control and remote transmission assembly is in modularized customization, and functional modules such as a 5G communication module and the like can be added according to purposes in the later stage, so that the functionality and the application conditions are increased.
Each instrument is in a wide voltage input form and has a field display function, and can independently complete work under the condition that the controller is damaged.
The mass flowmeter adopts a thermal mass flowmeter, the performance of the thermal mass flowmeter is reliable, a temperature sensor is not needed, and the pressure sensor and the computing unit are used for temperature and pressure conversion, so that the thermal mass flowmeter is simple in structure, stable and durable.
The air inlet and the air outlet are designed into quick-inserting and quick-changing structures, so that the air tightness test and the replacement of sample collection objects are facilitated (an adsorption tube, an air bag, a soda tank or the like can be adopted for gas collection according to the requirements of a laboratory), and meanwhile, various external quick-detecting instruments and sampling equipment can be externally connected.
Based on the characteristics of the Internet of things, the system can write an APP program, and field personnel can set parameters and control sampling of equipment through WIFI or Bluetooth modes by using the handheld equipment terminal APP. The wireless communication module B1 can transmit the sampling data to the cloud server through the 4G, so that the remote data can be conveniently browsed and checked.
After detecting the gas concentration (CH 4 gas by default), the combustible gas detector A3 transmits data to the PLC industrial control system B2 for analysis, judges whether the combustible gas concentration exceeds a preset gas threshold value, and if so, generates alarm information.
The combustible gas detector A3 is a modularized design probe which can be adjusted according to the components of the monitoring gas, and a plurality of monitoring probes can be connected in series according to the requirements to carry out multi-parameter monitoring.
The box D1 panel can be quickly disassembled, so that the replacement of the internal battery and the filter diaphragm and the equipment debugging and maintenance are convenient.
The materials and process parameters of the components of the application are shown in Table 1:
TABLE 1
The test system is designed and manufactured by adopting the intrinsic safety type, is particularly suitable for being used under the working condition that combustible gas exists, and meanwhile, the intrinsic safety type equipment is relatively small in explosion-proof type volume, and the whole system is small in volume, light in weight and convenient to use in the field.
Compared with the traditional harmful gas collection mode, the system is manually and simply connected and manually operated by adopting various devices, is highly integrated and automatic, and is suitable for unattended operation.
The application is developed based on the technology of the NB-IoT industrial Internet of things, and the technology has the advantages of wide deployment area, flexible use mode and low power consumption. Meanwhile, functional modules such as 5G and the like can be added in a targeted manner based on the later stage of modular design, and the expansibility and applicability of the system are improved.
Embodiment two:
fig. 4 is a flowchart of a method for intelligent collection and testing of harmful gases according to a second embodiment of the present invention.
Referring to fig. 4, the system is applied to the intelligent harmful gas collection and test system, and the test system comprises a sensor assembly, an industrial control and remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen;
Step S101, when the test system is in the airtight test, the pressure transmitter detects pressure readings at intervals of a preset time threshold value and sends the pressure readings to the PLC industrial control system;
step S102, when the test system is in a well flushing test, the flammable gas detector detects the concentration of the flammable gas and sends the concentration of the flammable gas to the PLC industrial control system;
step S103, when the test system is in a gas sample collection mode, the mass flowmeter collects gas flow and sends the gas flow to the PLC industrial control system;
step S104, the PLC industrial control system judges whether the change of the pressure reading is smaller than a preset pressure threshold value, if so, the air tightness of the test system meets the technical requirements;
Step S105, the PLC industrial control system judges whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, alarm information is generated; if not, stopping the well flushing test;
and step S106, the testing system is automatically closed under the condition that the gas flow reaches a preset flow threshold value, and the display screen is controlled to display prompt information that the sampling work is finished.
The embodiment of the invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the steps of the intelligent harmful gas collection test method provided by the embodiment are realized when the processor executes the computer program.
The embodiment of the invention also provides a computer readable medium with non-volatile program codes executable by a processor, wherein the computer readable medium is stored with a computer program, and the computer program executes the steps of the intelligent harmful gas collection test method in the embodiment when being executed by the processor.
The computer program product provided by the embodiment of the present invention includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to perform the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be described herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The intelligent harmful gas collecting and testing system is characterized by comprising a sensor assembly, an industrial control and remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen;
The pressure transmitter is used for detecting pressure readings at intervals of a preset time threshold when the test system is in the air tightness test and sending the pressure readings to the PLC industrial control system;
The combustible gas detector is used for detecting the concentration of the combustible gas when the testing system is in a well flushing test and sending the concentration of the combustible gas to the PLC industrial control system;
The mass flowmeter is used for collecting gas flow when the test system is in a gas sample collection mode and sending the gas flow to the PLC industrial control system;
The PLC industrial control system is used for judging whether the change of the pressure reading is smaller than a preset pressure threshold value, and if so, the air tightness of the test system meets the technical requirements;
judging whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, generating alarm information; if not, stopping the well flushing test;
when the gas flow reaches a preset flow threshold, the testing system is automatically closed, and the display screen is controlled to display prompt information that the sampling work is completed.
2. The intelligent collection and testing system for harmful gases according to claim 1, wherein the industrial control and remote transmission assembly further comprises a wireless communication module;
and the wireless communication module is used for uploading the pressure reading, the combustible gas concentration and the gas flow to a cloud server or a handheld device through an MQTT protocol.
3. The intelligent harmful gas collection and test system according to claim 2, wherein the handheld device is configured to obtain a setting of a parameter on an interface by a user; wherein the parameters include: the method comprises the steps of sampling gas total amount, sampling flow, sampling time, remote reminding information after sampling, gas washing time and frequency before sampling and negative pressure set value during air tightness detection.
4. The intelligent harmful gas collection test system according to claim 1, further comprising a housing and tubing apparatus and an adsorption tube, the housing and tubing apparatus comprising a tank, an inlet angle valve, an outlet angle valve, a vacuum diaphragm pump, a gas impurity filter and a tube;
the air inlet end of the inlet angle valve is connected with a hose quick connector and then connected with a hose of the air inlet to be tested;
the rear end of the inlet angle valve is connected with a male head of the gas quick connector and is connected with a female head of the gas quick connector on the box body panel.
5. The intelligent collection and testing system for harmful gases according to claim 4, wherein the rear end of the female end of the gas quick connector on the box panel is connected with the hose and is connected with the pipeline;
The pipeline is connected with the gas impurity filter, the mass flowmeter, the pressure transmitter and the combustible gas detector in sequence through the pipe joint, and then is connected with the outlet angle valve through the hose.
6. The intelligent collection and testing system for harmful gases according to claim 4, wherein the rear end of the outlet angle valve is connected with a quick-twist joint of the hose and is connected with the adsorption tube after being connected with a medical silicone tube;
The rear end of the adsorption tube is connected with the silica gel tube, and the rear end of the silica gel tube is connected with the quick-screwing joint of the hose at the upper part of the box body panel;
The quick-screwing connector arranged at the lower part of the box panel is connected with the air inlet end of the vacuum diaphragm pump, so that a complete gas conveying and sampling route is formed.
7. The intelligent collection test system of harmful gases according to claim 2, wherein the test system further comprises an antenna;
the wireless communication module is connected with the PLC industrial control system through a serial port and is packaged in the protective shell;
The wireless communication module is connected with the antenna, and the PLC industrial control system is connected with the display screen in an SPI transmission mode; wherein the wireless communication module is NB-IoT.
8. An intelligent harmful gas collection and test method is characterized by being applied to the intelligent harmful gas collection and test system according to any one of claims 1 to 7, wherein the test system comprises a sensor assembly, an industrial control and remote transmission assembly; the sensor assembly comprises a mass flowmeter, a pressure transmitter and a combustible gas detector, and the industrial control and remote transmission assembly comprises a PLC industrial control system and a display screen;
When the test system is in the airtight test, the pressure transmitter detects pressure readings at intervals of a preset time threshold value and sends the pressure readings to the PLC industrial control system;
When the test system is in a well flushing test, the combustible gas detector detects the concentration of the combustible gas and sends the concentration of the combustible gas to the PLC industrial control system;
when the testing system is in a gas sample collection mode, the mass flowmeter collects gas flow and sends the gas flow to the PLC industrial control system;
The PLC industrial control system judges whether the change of the pressure reading is smaller than a preset pressure threshold value, and if so, the air tightness of the test system meets the technical requirements;
the PLC industrial control system judges whether the concentration of the combustible gas exceeds a preset gas threshold value, and if so, generates alarm information; if not, stopping the well flushing test;
And the PLC industrial control system is automatically closed under the condition that the gas flow reaches a preset flow threshold value, and controls the display screen to display prompt information that the sampling work is completed.
9. An electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor implements the method of claim 8 when executing the computer program.
10. A computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410141375.3A CN117990445A (en) | 2024-01-31 | 2024-01-31 | Harmful gas intelligent acquisition test system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410141375.3A CN117990445A (en) | 2024-01-31 | 2024-01-31 | Harmful gas intelligent acquisition test system and method |
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| CN117990445A true CN117990445A (en) | 2024-05-07 |
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| CN202410141375.3A Pending CN117990445A (en) | 2024-01-31 | 2024-01-31 | Harmful gas intelligent acquisition test system and method |
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| Country | Link |
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| CN (1) | CN117990445A (en) |
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- 2024-01-31 CN CN202410141375.3A patent/CN117990445A/en active Pending
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