CN218524204U - Split type industrial organic waste gas treatment facility efficiency monitoring system - Google Patents
Split type industrial organic waste gas treatment facility efficiency monitoring system Download PDFInfo
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Abstract
The utility model belongs to the monitoring field of waste gas treatment equipment, and provides a split type industrial organic waste gas treatment facility efficiency monitoring system, which comprises an air inlet end monitoring box and an air outlet end monitoring box; a first controller; a second controller is fixed inside the air outlet end monitoring box; the air inlet end monitoring equipment is in wireless communication with a second controller of the air outlet end monitoring box through a first controller; an air inlet gas path inside the air inlet end monitoring box is communicated with an inlet air channel of the on-site monitoring equipment through an air guide pipe; an air outlet gas path inside the air outlet end monitoring box is communicated with an outlet air duct of the field monitoring equipment through an air duct; a sampling air return hole and a wind speed and displacement measuring hole are formed in the inlet air duct; a pitot tube type self-flowing sampler is fixed in the sampling return air merging hole; and a wind speed sensor and a displacement sensor are fixed in the wind speed displacement measuring hole. The split design of the air inlet end equipment and the air outlet end equipment is adopted, so that the length of a sampling pipeline is effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of waste gas treatment equipment monitoring, concretely relates to split type industry organic waste gas treatment facility efficiency monitoring system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
For the monitoring scheme of the operation efficiency of the organic waste gas treatment facility by the adsorption method, the VOC gas concentration of the air inlet and the air outlet of the activated carbon adsorption tank needs to be detected so as to measure and calculate the purification efficiency of the device. At present, a set of monitoring instrument is adopted to carry out double-path sampling through switching of a gas path control assembly (a pump and a valve), the cost investment of a detection unit and a sensor is reduced by the mode, but the following problems still exist in practical application:
the activated carbon adsorption box body is large, the span of the air inlet and the air outlet is more than ten meters, and the length of the sampling air path is longer if the sampling air path is required to be longer according to the standard wiring. Therefore, the construction difficulty of the sampling pipeline is increased, and the cost is increased.
In many scenarios, the VOC emissions from the enterprise are not continuously steady concentration emissions, but fluctuate widely. The mechanism of double-path sampling and alternate detection needs a certain switching time interval, and cannot obtain real-time comparison data, namely, the outlet gas concentration is measured after the inlet gas concentration is measured, and at the moment, gas samples measured twice are not necessarily the same or adjacent 'same strand' of exhaust gas, so that accurate purification efficiency data calculation cannot be carried out.
The internal gas path structure of the equipment double-path sampling equipment is relatively complex, and the control sequence logic is relatively complex. The range selection of the sensor only adopts the principle of high or low, but the purification efficiency of the purification device is usually about 90%, the front concentration and the rear concentration are different by ten times, and the measurement precision of the gas outlet end can influence the measurement precision due to overlarge range.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, provided a split type industry organic waste gas treatment facility efficiency monitoring system, the utility model discloses a split type design, air inlet end equipment and air outlet end equipment are installed respectively in activated carbon adsorption box both sides, can effectively reduce the sampling pipeline length and the construction degree of difficulty. Meanwhile, due to the split design, on one hand, the control logic of the sampling pipeline and the use number of the gas circuit control components can be greatly simplified; on the other hand, each set of end equipment is provided with an independent measuring sensor, so that continuous sampling measurement can be performed, measurement data in the same time period are provided for the cloud software system, and the measurement precision is improved.
According to some embodiments, the utility model provides a split type industry organic waste gas administers facility efficiency monitoring system adopts following technical scheme:
a split type industrial organic waste gas treatment facility efficiency monitoring system comprises an air inlet end monitoring box and an air outlet end monitoring box; a first controller is fixed inside the air inlet end monitoring box; a second controller is fixed inside the air outlet end monitoring box; the air inlet end monitoring equipment is in wireless communication with a second controller of the air outlet end monitoring box through a first controller;
an air inlet gas path inside the air inlet end monitoring box is communicated with an inlet air channel of the on-site monitoring equipment through an air guide pipe; an air outlet gas path inside the air outlet end monitoring box is communicated with an outlet air duct of the field monitoring equipment through an air duct; a sampling return air merging hole and a wind speed and displacement measuring hole are formed in the inlet air duct; a pitot tube type self-flowing sampler is fixed in the sampling return air merging hole; and a wind speed sensor and a displacement sensor are fixed in the wind speed displacement measuring hole.
Furthermore, the air inlet end monitoring box comprises a box body, wherein a touch display screen is fixed on the box body, and the touch display screen is electrically connected with the first controller.
Furthermore, the pitot tube type self-flowing sampler comprises an air inlet vent pipe and an air return vent pipe, and the axial surfaces of the air inlet vent pipe and the air return vent pipe are fixedly connected into an integral structure side by side;
one end of the air inlet and vent pipe extends into the vent pipe through a sampling air return merging hole and is arranged at the windward side opening, and the other end of the air inlet and vent pipe is positioned outside the vent pipe and is connected with the air inlet and vent pipe;
one end of the air return vent pipe extends into the vent pipe through the sampling air return merging hole and is arranged at an opening on the lee side, and the other end of the air return vent pipe is positioned outside the vent pipe and is connected with the air return air guide pipe.
Further, the air inlet gas path comprises a first gas path tee joint, and the first gas path tee joint is connected with a first gas chamber VOC sensor and a first temperature and humidity sensor; the first air passage tee joint is also connected with a first air pressure sensor;
the first air passage tee joint is connected with a sampling air return merging hole on an outlet air duct of the on-site monitoring equipment through an air inlet air guide tube;
the first air chamber VOC sensor and the first temperature and humidity sensor are connected with a sampling air return merging hole in an inlet air duct of the on-site monitoring equipment through an air return air guide pipe.
Further, the air outlet gas path comprises a second gas path tee joint, and the second gas path tee joint is respectively connected with the flow regulating valve and the second air pressure sensor;
the flow regulating valve is connected with a second air chamber VOC sensor and a second temperature and humidity sensor, and the second air chamber VOC sensor and the second temperature and humidity sensor are connected with a gas direct discharge port of the gas outlet monitoring box;
and the second gas path tee joint is connected with a sampling hole on an outlet air duct of the on-site monitoring equipment through a gas inlet air duct.
Furthermore, the first air chamber VOC sensor, the first temperature and humidity sensor, the first air pressure sensor, the second air chamber VOC sensor, the second temperature and humidity sensor, the second air pressure sensor and the flow regulating valve are all designed in a sealing mode, and air leakage in the waste gas transmission process is prevented.
Further, the first controller comprises a first communication module and a first microcontroller, and the first communication module is in wireless communication with the upper computer and the second controller respectively; and the upper computer transmits the data collected by the air inlet end monitoring box and the air outlet end monitoring box to the enterprise end efficiency monitoring system.
Further, the second controller comprises a second communication module and a second microcontroller, and the second communication module is communicated with the first controller.
Furthermore, the gas outlet end monitoring box also comprises a gas outlet current and voltage sampling device, and the gas outlet current and voltage sampling device is connected with a desorption fan and an adsorption fan of the on-site monitoring equipment through electric wires;
and the second controller is respectively and electrically connected with the second air chamber VOC sensor, the second temperature and humidity sensor, the second air pressure sensor and the air inlet current and voltage sampling device.
Furthermore, the first controller is respectively connected with the first air chamber VOC sensor, the first temperature and humidity sensor, the first air pressure sensor, the air speed sensor and the displacement sensor.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses need not additionally to handle and can reach sensor measurement and the scene of equipment operation maintenance requirement at survey gas temperature, humidity, particulate matter concentration, can reduce the length and the construction degree of difficulty of sampling pipeline, reduce the sampling pipeline cost, make equipment can be near measuring near the sampling point. Meanwhile, different requirements of inlet gas and outlet gas on recovery and discharge can be considered respectively through split design, different gas paths are designed, and the design is simplified and more reasonable. The inlet end device and the outlet end device are provided with the same type (can have different measuring ranges) of sensors, so that errors caused by different sensitivities of electrochemical or semiconductor sensors to organic gases with different components can be ignored.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic view of the gas circuit connection of the gas inlet end monitoring box of the efficiency monitoring system of a split type industrial organic waste gas treatment facility of the present invention;
FIG. 2 is a schematic circuit diagram of an inlet end monitoring box of a split industrial organic waste gas treatment facility efficiency monitoring system of the present invention;
FIG. 3 is a schematic view of the gas circuit connection of the gas outlet end monitoring box of the efficiency monitoring system of a split industrial organic waste gas treatment facility of the present invention;
FIG. 4 is a schematic circuit diagram of a gas outlet end monitoring box of the efficiency monitoring system of a split industrial organic waste gas treatment facility of the present invention;
fig. 5 is a schematic view of the installation of the system for monitoring the effectiveness of a split type industrial organic waste gas treatment facility of the present invention;
FIG. 6 is a schematic view of the overall measurement of a system for monitoring the effectiveness of a split type industrial organic waste gas treatment facility according to the present invention;
fig. 7 is a schematic diagram of the skin-dragged-tube type sampling device of the efficiency monitoring system of the split industrial organic waste gas treatment facility of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be fixedly connected, or may be integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
Example one
As shown in fig. 1, the present embodiment provides a system for monitoring the efficiency of a split type industrial organic waste gas treatment facility, which includes an air inlet end monitoring box and an air outlet end monitoring box; comprises an air inlet end monitoring box and an air outlet end monitoring box; a first controller is fixed inside the air inlet end monitoring box; a second controller is fixed inside the air outlet end monitoring box; the air inlet end monitoring equipment is in wireless communication with a second controller of the air outlet end monitoring box through a first controller;
an air inlet gas path inside the air inlet end monitoring box is communicated with an inlet air duct of the on-site monitoring equipment through an air duct; an air outlet gas path inside the air outlet end monitoring box is communicated with an outlet air duct of the field monitoring equipment through an air duct; a sampling return air merging hole and a wind speed and displacement measuring hole are formed in the inlet air duct; a skin-supported tube type self-flowing sampler is fixed in the sampling air return merging hole; and a wind speed sensor and a displacement sensor are fixed in the wind speed displacement measuring hole.
The air inlet end monitoring box comprises a box body, wherein a touch display screen is fixed on the box body, and the touch display screen is electrically connected with the first controller.
The leather-supported tube type self-flowing sampler comprises an air inlet vent pipe and an air return vent pipe, and the axial surfaces of the air inlet vent pipe and the air return vent pipe are fixedly connected into an integral structure side by side;
one end of the air inlet breather pipe extends into the breather pipe through the sampling air return merging hole and is arranged at the windward side opening, and the other end of the air inlet breather pipe is positioned outside the breather pipe and is connected with the air inlet air guide pipe;
one end of the air return vent pipe extends into the vent pipe through the sampling air return merging hole and is arranged at an opening on the lee side, and the other end of the air return vent pipe is positioned outside the vent pipe and is connected with the air return air guide pipe.
Specifically, the air inlet gas path comprises a first gas path tee joint, and the first gas path tee joint is connected with a first air chamber VOC sensor and a first temperature and humidity sensor; the first air passage tee joint is also connected with a first air pressure sensor;
the first air passage tee joint is connected with a sampling air return merging hole on an outlet air duct of the on-site monitoring equipment through an air inlet air guide tube;
the first air chamber VOC sensor and the first temperature and humidity sensor are connected with a sampling air return merging hole in an inlet air duct of the on-site monitoring equipment through an air return air guide pipe.
The air outlet gas path comprises a second gas path tee joint, and the second gas path tee joint is respectively connected with the flow regulating valve and the second air pressure sensor;
the flow regulating valve is connected with a second air chamber VOC sensor and a second temperature and humidity sensor, and the second air chamber VOC sensor and the second temperature and humidity sensor are connected with a gas direct discharge port of the gas outlet monitoring box;
and the second gas path tee joint is connected with a sampling hole on an outlet air duct of the on-site monitoring equipment through a gas inlet air duct.
The first air chamber VOC sensor, the first temperature and humidity sensor, the first air pressure sensor, the second air chamber VOC sensor, the second temperature and humidity sensor, the second air pressure sensor and the flow regulating valve are all designed in a sealing mode, and therefore air leakage in the waste gas transmission process is prevented.
Specifically, the first controller comprises a first communication module and a first microcontroller, and the first communication module is in wireless communication with the upper computer and the second controller respectively; and the upper computer transmits the data collected by the air inlet end monitoring box and the air outlet end monitoring box to the enterprise end efficiency monitoring system.
The second controller comprises a second communication module and a second microcontroller, and the second communication module is communicated with the first controller.
Specifically, the gas outlet end monitoring box further comprises a gas outlet current and voltage sampling device, and the gas outlet current and voltage sampling device is connected with a desorption fan and an adsorption fan of the field monitoring equipment through electric wires;
and the second controller is respectively and electrically connected with the second air chamber VOC sensor, the second temperature and humidity sensor, the second air pressure sensor and the air inlet current and voltage sampling device.
The first controller is respectively connected with the first air chamber VOC sensor, the first temperature and humidity sensor, the first air pressure sensor, the air speed sensor and the displacement sensor.
The utility model discloses a constitute by computer software system and a plurality of hardware measuring equipment, rely on this whole combination performance to carry out the effect that efficiency monitoring was carried out to adsorption process industrial organic waste gas treatment facility in the enterprise. The whole composition structure is shown in fig. 6:
the enterprise pollution control facility operation efficiency monitoring system is a software system, is a B/S framework, is usually deployed in an Internet cloud server, can also be deployed in a local area network, is mainly used for displaying, inquiring, analyzing, early warning and other functions of monitoring data, has multi-level user authority management, and is suitable for the service management requirements of an online monitoring system of an ecological environment department. It should be noted that, existing processing procedures for operation efficiency are adopted for the processing procedures of the enterprise-end monitoring system, while the embodiment does not relate to the improvement of the program, and the emphasis of the embodiment is on the collection and transmission of the exhaust emission.
The real-time data receiving software (upper computer software) is a receiving software system of the internet of things equipment data ground, supports multiple concurrencies and supports data storage of a time sequence database and a relational database. The method is generally deployed in an internet cloud server, and can be deployed in a local area network. And the system and an enterprise pollution treatment facility operation efficiency monitoring system on the upper layer operate a set of database system together. The application of the upper computer is also the application of the upper computer in the prior art, and does not relate to the improvement of an internal processing program of the upper computer.
The equipment of enterprise field end installation divide into air inlet end equipment and air outlet end equipment, and wherein, air pressure sensor, VOC concentration and temperature and humidity sensor all install inside same box in the air inlet end equipment, and wind speed, air output need punch on the flue and arrange the sensor in the flue for external sensor, and power supply and data line are connected inside the box.
Gas pressure sensor, VOC concentration and temperature and humidity sensor all install inside same box in gas outlet end equipment, install two sets of three-phase alternating current metering chip simultaneously and be used for measuring the power consumption parameters such as electric current, voltage, active power, power factor that adsorb draught fan and desorption fan. The current measurement adopts open type external current transformer, and the voltage measurement is access type. The device is required to be installed on a power supply line of an adsorption induced draft fan of a pollution treatment facility and used for measuring the starting and stopping state, the running load and the running time of the induced draft fan. If simultaneously if the facility of treating pollution possesses the desorption facility, then also need install on desorption fan's power supply line for it is long when measuring desorption fan start-stop state and operation, so that monitor enterprise desorption action and desorption number of times. If the facility does not have a desorption arrangement, the monitoring point may not need to be installed.
The air outlet end equipment and the air inlet end equipment need to be communicated and networked, the networking takes the air inlet end equipment as a communication intermediate node (provided with a touch screen and a data storage unit), the intermediate node collects monitoring data of all monitoring equipment on site, then stores and displays the monitoring data on the touch screen, and then reports real-time data receiving software in a unified mode. Equipment networking can be carried out through communication protocols such as WIFI, lora, zegbee, bluetooth, and corresponding communication chip need all be installed at the equipment both ends. Or NBIOT, 4G or 5G communication chips can be adopted to carry out point-to-point data transmission through an mqtt protocol, transmit data to an intermediate node and then report the data uniformly. It should be noted that the storage of sensor data and the display of the touch screen by the central microprocessor are performed by the prior art, and the improvement of a specific program is not involved.
The schematic installation diagram of the equipment is shown in fig. 5, which is a schematic structural diagram of a whole set of adsorption-process industrial organic waste gas treatment facilities. The black dots are the specific positions where the gas circuit sampling device and the current and voltage sampling device of the system described in the patent need to be installed. The gas circuit sampling device needs to be connected with an air guide pipe and an electric wire and an adsorption-based pollution treatment facility efficiency monitoring device (hereinafter referred to as an on-site monitoring device), and the current and voltage sampling device needs to be connected with the on-site monitoring device only through the electric wire. The field end monitoring equipment is fixed at a proper position which is convenient for power taking and gas circuit connection by using the floor stand or the hanging rack.
The air inlet end equipment is shown in figure 1, and is an independent box structure which is connected with a sampling device and an external sensor. The box body is mainly divided into two parts, one part is a data communication, display and control part. The cloud real-time data reporting system comprises a communication module, wherein the data reporting module is an essential component, and a communication chip of the communication module can adopt NBIOT, 4G or 5G and is communicated with cloud real-time data receiving software (an upper computer system) through an mqtt protocol or an HJ212 protocol. The networking communication module is an optional part, and when all field end devices of the enterprise adopt NBIOT, 4G or 5G chips and carry out communication networking through an mqtt protocol, the networking module can be configured. Otherwise, the networking communication chip needs to be configured, and the chip can be networked by protocols such as WIFI, lora, zegbee or Bluetooth and is provided with a corresponding communication chip. The part also comprises a touch display screen and a central control module, wherein the touch display screen runs an embedded interface interaction system and mainly completes functions of displaying real-time data of all monitoring equipment on site, inquiring historical data, configuring parameters and the like. The central control module runs a control and data interaction program to complete the control of the measuring and sampling pump and the data interaction and reading work of all the sensors, and is also responsible for the landing storage of data in a local storage chip.
The other part is a measuring part, wherein when the wind speed in the measured wind channel is more than 10M/S, a pitot tube type sampler can be used for pushing the gas to flow by the pressure difference generated at sampling ports on the windward side and the leeward side without a sampling pump. When the wind speed is less than 10M/S, the air flow speed is slow, and a sampling pump is required to increase the gas exchange speed. The air chamber, the VOC sensor and the temperature and humidity sensor adopt a sealed design, and gas exchange is carried out only through an inlet and an outlet of the air chamber. The VOC sensor can use a PID sensor, an electrochemical sensor or a semiconductor sensor, and the temperature and humidity sensor is used for measuring environmental parameters and participating in temperature and humidity compensation operation of a measured value of the VOC sensor. The air pressure sensor is used for measuring the air pressure value in the air duct. Because the measured gas has untreated industrial waste gas, all the components such as sensors, pumps, valves and the like from the sampling hole end to the interior of the whole equipment adopt a full-flow closed design, and no discharge opening or leakage point exists between the measured gas and the outside air.
The sampling device needs to punch 2 holes on the air duct of the inlet of the activated carbon box, a pitot tube type sampling device needs to be inserted into the hole A, the sampling device is a double-path pipeline and used for collecting unprocessed gas samples and returning detected sample gas into the pipeline, the structure description shows an attached drawing, sealing treatment needs to be carried out after insertion, a hole B is used for installing an insertion type air speed sensor and a flow sensor, sealing treatment also needs to be carried out after the hole B is used for installing the insertion type air speed sensor and the flow sensor, and the air speed sensor can be a pitot tube type or a thermosensitive type air speed sensor.
The whole measuring device is connected with an air path as shown in fig. 1, and an arrow indicates the air flowing direction. If the design scheme is provided with a sampling pump, the pump is in an operating state before the reading of the VOC sensor, and all sensors support real-time data reading.
As shown in fig. 2, the air inlet end monitors the circuit connection relationship of the box, and the central control and operation module is the core of device control, operation and data storage, and is respectively connected with the touch display screen and the communication module and performs data communication. And carrying out control signal or power supply connection on the sampling pump, and carrying out signal line connection on various sensors to acquire data.
The monitoring box at the air outlet end is a separate box structure as shown in fig. 3, and the structure is connected with the sampling device. The box body is mainly divided into two parts, one part is a data communication, display and control part. The cloud real-time data reporting system comprises a communication module, wherein the data reporting module is an essential component, and a communication chip of the communication module can adopt NBIOT, 4G or 5G and is communicated with cloud real-time data receiving software (an upper computer system) through an mqtt protocol or an HJ212 protocol. The networking communication module is an optional part, and when all field end devices of the enterprise adopt NBIOT, 4G or 5G chips and carry out communication networking through an mqtt protocol, the networking module can be configured. Otherwise, the networking communication chip needs to be configured, and the chip can be networked by protocols such as WIFI, lora, zegbee or Bluetooth and is provided with a corresponding communication chip. The part also comprises a central control and operation module which runs a data interaction program with the sensors to complete data interaction and reading work of all the sensors and is also responsible for the landing storage of data in a local storage chip.
The other part is a measuring part, the internal pressure of the measured air duct is far greater than the external natural atmospheric pressure under the action of an induced draft fan in the measured air duct, and the tail end of the treatment facility is arranged at the air outlet of the activated carbon box, so that sample gas after detection can be directly discharged into the atmosphere. Therefore, the air pushing of the sampling pipeline can be completed by utilizing the inherent pressure difference between the inside and the outside of the pipeline, and meanwhile, the flow is adjusted to be within the parameter range required by the sensor by utilizing the flow adjusting valve. The air chamber, the VOC sensor and the temperature and humidity sensor adopt a sealing design, and only the air inlet and the air outlet of the air chamber are used for gas exchange. The VOC sensor can use a PID sensor, an electrochemical sensor or a semiconductor sensor, and the temperature and humidity sensor is used for measuring environmental parameters and participating in temperature and humidity compensation operation of a measured value of the VOC sensor. The air pressure sensor is used for measuring the air pressure value in the air duct. The finally detected gas sample can be directly exhausted to the atmosphere through an exhaust hole on the device without a return pipeline. The measuring part also comprises two sets of three-phase alternating current measuring chips for measuring current, voltage, active power, power factor and other power utilization parameters of the adsorption draught fan and the desorption draught fan. The current measurement adopts the external current transformer of open type, and voltage measurement is the access formula, installs respectively on the power supply line that adsorbs draught fan and desorption fan.
The sampling device needs to punch 1 hole on the air duct at the inlet of the activated carbon box, and the hole A does not need a leather dragging pipe sampling device and only needs to be connected out in a single way for detecting sample gas at the gas outlet end.
The circuit connection relationship of the monitoring box at the air outlet end is shown in fig. 4, and the central control and operation module is the core of equipment control, operation and data storage and is connected with the communication module, the sensor and the electric energy metering chip for data communication. The external open type current transformer and the voltage acquisition circuit are connected with corresponding terminals of the three-phase alternating current energy metering chip through electric wires.
As shown in fig. 7, the pitot tube type sampling device with the structure comprises a pitot tube type self-flowing sampler, an air inlet vent pipe and an air return vent pipe, wherein the axial surfaces of the air inlet vent pipe and the air return vent pipe are fixedly connected into an integral structure side by side;
one end of the air inlet breather pipe extends into the breather pipe through the sampling air return merging hole and is arranged at the windward side opening, the other end of the air inlet breather pipe is positioned outside the breather pipe and is connected with the air inlet air guide pipe, and the air guide pipe outside the breather pipe is provided with an air guide pipe anti-skid joint; the tube is responsible for sampling intake air;
one end of the air return vent pipe extends into the vent pipe through the sampling air return merging hole and is arranged at an opening on the lee side, the other end of the air return vent pipe is positioned outside the vent pipe and is connected with the air return air guide pipe, the air guide pipe is an anti-skid joint outside the vent pipe, and the pipe is responsible for sampling air return.
The ventilation pipe adopts metal or rigid plastic, also can adopt the structure of other materials according to specific application, and two ventilation pipes are pasted or welded as an organic whole back to back, also can adopt other fixed connection modes to connect, stretch into the ventilation pipe through a sampling return air merging hole.
According to the structural characteristics of the pitot tube, pressure difference is generated between the hole A on the windward side and the hole B on the leeward side, when the wind speed is increased, the pressure difference is increased, and the equipment pushes the measured gas to flow by utilizing the pressure difference, so that the aim of continuously collecting the gas sample in the air duct without depending on a sampling pump is fulfilled. C. D is respectively connected with an air inlet guide tube and an air return guide tube for sampling by the equipment.
Key improvement points of this embodiment:
1. because the active carbon adsorption device is usually bulky, split type design need not extra processing in by survey gas temperature, humidity, particulate matter concentration and can reach the sensor and measure and the scene of equipment operation maintenance requirement, can reduce the length and the construction degree of difficulty of sampling pipeline, reduce sampling pipeline cost, make equipment can be near the measurement in sampling point. Meanwhile, different requirements of inlet gas and outlet gas on recovery and discharge can be considered respectively through split design, different gas paths are designed, and the design is simplified and more reasonable. The inlet end equipment and the outlet end equipment are required to be provided with the same type (different measuring ranges) of sensors, so that even if errors caused by different sensitivities of electrochemical or semiconductor sensors to organic gases with different components exist, the molecular denominators are mutually offset when the purification efficiency of the adsorption device is calculated due to the same type of sensors, and the accuracy of index calculation is not influenced.
2. The pitot tube type structure sampling device utilizes the physical characteristics of a pitot tube structure to generate pressure difference to push the tested gas to flow automatically under the scene of high wind speed. The pitot tube is mostly used for measuring wind speed and flow in application, and is an innovation in an application scene by simply using a physical structure of the pitot tube as a power source for pushing sample gas to flow.
It follows that the system of the present embodiment has the following effects:
1. compared with a monitoring system design scheme of double-path detection, the device disclosed by the invention is more flexible and reasonable in installation position, the length and the construction difficulty of a gas path sampling pipeline are greatly reduced, and meanwhile, the risk that an air guide pipe is easily damaged and destroyed is also reduced.
2. In the embodiment, due to the fact that measurement in turn is not needed, continuous measurement data can be obtained, measurement data in the same time period are provided for the cloud software system, and therefore calculation of purification efficiency is more accurate.
3. The VOC sensors at the air inlet and the air outlet can respectively select the most suitable measuring ranges according to the concentration ranges of the VOC sensors, so that the precision of measurement and calculation values is further improved.
4. Typically, pitot tube structures are used for wind speed and wind volume measurements. The system completely puts forward and utilizes the structural characteristics of the pitot tube to manufacture the self-flow sampling device. The sampling device can push gas to flow in the sampling pipeline by utilizing the pressure difference generated by the windward side and the leeward side. In the application scene that the pipeline wind speed is great, the device can produce enough big pressure differential, can satisfy the monitoring instrument requirement to the equipment of sampling pump has been saved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A split type industrial organic waste gas treatment facility efficiency monitoring system is characterized by comprising an air inlet end monitoring box and an air outlet end monitoring box; a first controller is fixed inside the air inlet end monitoring box; a second controller is fixed inside the air outlet end monitoring box; the air inlet end monitoring equipment is in wireless communication with a second controller of the air outlet end monitoring box through a first controller;
an air inlet gas path inside the air inlet end monitoring box is communicated with an inlet air duct of the on-site monitoring equipment through an air duct; an air outlet gas path inside the air outlet end monitoring box is communicated with an outlet air duct of the field monitoring equipment through an air duct; a sampling return air merging hole and a wind speed and displacement measuring hole are formed in the inlet air duct; a skin-supported tube type self-flowing sampler is fixed in the sampling air return merging hole; and a wind speed sensor and a displacement sensor are fixed in the wind speed displacement measuring hole.
2. The split type industrial organic waste gas treatment facility efficiency monitoring system of claim 1, wherein the air inlet end monitoring box comprises a box body, a touch display screen is fixed on the box body, and the touch display screen is electrically connected with the first controller.
3. The system of claim 1, wherein the pitot tube type self-flow-through sampler comprises an air intake vent pipe and an air return vent pipe, and the axial surfaces of the air intake vent pipe and the air return vent pipe are fixedly connected side by side to form an integral structure;
one end of the air inlet and vent pipe extends into the vent pipe through a sampling air return merging hole and is arranged at the windward side opening, and the other end of the air inlet and vent pipe is positioned outside the vent pipe and is connected with the air inlet and vent pipe;
one end of the air return vent pipe extends into the vent pipe through the sampling air return merging hole and is arranged at an opening on the lee side, and the other end of the air return vent pipe is positioned outside the vent pipe and is connected with the air return air guide pipe.
4. The split industrial organic waste gas treatment facility efficiency monitoring system of claim 1, wherein the inlet gas circuit comprises a first gas circuit tee, the first gas circuit tee being connected to a first air chamber VOC sensor and a first temperature and humidity sensor; the first air passage tee joint is also connected with a first air pressure sensor;
the first air passage tee joint is connected with a sampling air return merging hole on an outlet air duct of the on-site monitoring equipment through an air inlet air guide tube;
the first air chamber VOC sensor and the first temperature and humidity sensor are connected with a sampling air return merging hole in an inlet air duct of the on-site monitoring equipment through an air return air guide pipe.
5. The split-type industrial organic waste gas treatment facility efficiency monitoring system of claim 4, wherein the gas outlet path comprises a second gas path tee, and the second gas path tee is respectively connected with the flow regulating valve and the second air pressure sensor;
the flow regulating valve is connected with a second air chamber VOC sensor and a second temperature and humidity sensor, and the second air chamber VOC sensor and the second temperature and humidity sensor are connected with a gas direct discharge port of the gas outlet monitoring box;
and the second gas path tee joint is connected with a sampling hole on an outlet air duct of the on-site monitoring equipment through a gas inlet air duct.
6. The split type industrial organic waste gas treatment facility efficiency monitoring system of claim 5, wherein the first air chamber VOC sensor, the first temperature and humidity sensor, the first air pressure sensor, the second air chamber VOC sensor, the second temperature and humidity sensor, the second air pressure sensor and the flow regulating valve are all of a sealed design so as to prevent air leakage during waste gas transmission.
7. The split type industrial organic waste gas treatment facility efficiency monitoring system of claim 1, wherein the first controller comprises a first communication module and a first microcontroller, and the first communication module is in wireless communication with the upper computer and the second controller respectively; and the upper computer transmits the data acquired by the air inlet end monitoring box and the air outlet end monitoring box to the enterprise end efficiency monitoring system.
8. The split industrial organic waste gas treatment facility performance monitoring system of claim 1, wherein the second controller comprises a second communication module and a second microcontroller, the second communication module being in communication with the first controller.
9. The split-type industrial organic waste gas treatment facility efficiency monitoring system of claim 1, wherein the outlet-end monitoring box further comprises an outlet current-voltage sampling device, and the outlet current-voltage sampling device is connected with a desorption fan and an adsorption fan of an on-site monitoring device through wires;
and the second controller is respectively and electrically connected with the second air chamber VOC sensor, the second temperature and humidity sensor, the second air pressure sensor and the air inlet current and voltage sampling device.
10. The split industrial organic waste gas treatment facility efficiency monitoring system of claim 1, wherein the first controller is connected to the first air chamber VOC sensor, the first temperature and humidity sensor, the first air pressure sensor, the air velocity sensor, and the displacement sensor, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223034375.9U CN218524204U (en) | 2022-11-14 | 2022-11-14 | Split type industrial organic waste gas treatment facility efficiency monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223034375.9U CN218524204U (en) | 2022-11-14 | 2022-11-14 | Split type industrial organic waste gas treatment facility efficiency monitoring system |
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| CN218524204U true CN218524204U (en) | 2023-02-24 |
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| CN202223034375.9U Active CN218524204U (en) | 2022-11-14 | 2022-11-14 | Split type industrial organic waste gas treatment facility efficiency monitoring system |
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| CN (1) | CN218524204U (en) |
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