CN211453265U - Portable catering oil smoke monitor and portable catering oil smoke monitoring system - Google Patents
Portable catering oil smoke monitor and portable catering oil smoke monitoring system Download PDFInfo
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- CN211453265U CN211453265U CN202020022360.2U CN202020022360U CN211453265U CN 211453265 U CN211453265 U CN 211453265U CN 202020022360 U CN202020022360 U CN 202020022360U CN 211453265 U CN211453265 U CN 211453265U
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Abstract
The utility model provides a portable food and beverage oil smoke monitor and portable food and beverage oil smoke monitoring system relates to environmental monitoring's technical field, including the sampling probe and the flue gas analysis host computer that connect gradually, wherein, the flue gas analysis host computer includes: a flue gas analysis device and a communication device; the sampling probe is connected with the row port to be monitored; the sampling probe is used for sampling the flue gas discharged by the discharge port to be monitored to obtain sample gas and conveying the sample gas to the flue gas analysis device; flue gas analytical equipment for receive the sample gas in real time, and confirm the target detection parameter of sample gas, send the target detection parameter to the main control system through communication device, wherein, the target detection parameter includes: soot concentration and/or non-methane total hydrocarbon concentration. The portable catering oil smoke monitor can monitor the oil smoke concentration and the non-methane total hydrocarbon concentration of the smoke discharged from the exhaust port to be monitored in real time, so that the technical problem of poor timeliness and accuracy existing in an oil smoke monitoring method in the prior art is solved.
Description
Technical Field
The utility model belongs to the technical field of the environmental monitoring technique and specifically relates to a portable food and beverage oil smoke monitor and portable food and beverage oil smoke monitoring system is related to.
Background
Along with the emphasis of the country on the air pollution prevention and control work, the waste gas generated by the catering oil fume is more and more emphasized, in recent years, some places issue the catering oil fume emission standard in the district according to the characteristics of the region, such as the "catering industry atmospheric pollution emission standard" (DB11/1488 plus 2018) in Beijing City, and simultaneously put forward limit value requirements on the concentrations of the oil fume, particulate matters and non-methane total hydrocarbons in the catering oil fume; the emission standard of oil smoke pollutants for catering industry (DB41/1604-2018) in Henan province puts forward limit requirements on the concentrations of oil smoke and non-methane total hydrocarbons.
Most of the food and beverage oil smoke waste gas detection methods adopt an infrared spectrophotometry to detect the oil smoke concentration in the waste gas, but the infrared spectrophotometry belongs to a laboratory monitoring method, sample gas needs to be collected from the site to a laboratory, then the result is obtained through analysis, and a long time is consumed from the sampling to the analysis, so that the accuracy of the analysis result cannot be ensured, and the standard method cannot be used for analyzing the non-methane total hydrocarbons in the sample gas due to the fact that the temperature has a large influence on the concentration analysis of the non-methane total hydrocarbons.
In summary, the oil smoke monitoring method in the prior art has the technical problems of poor timeliness and accuracy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable food and beverage oil smoke monitor and portable food and beverage oil smoke monitoring system to alleviate the timeliness and the poor technical problem of accuracy that the oil smoke monitoring method among the prior art exists.
In a first aspect, an embodiment provides a portable catering oil smoke monitor, including: sampling probe and flue gas analysis host computer that connect gradually, wherein, flue gas analysis host computer includes: a flue gas analysis device and a communication device; the sampling probe is connected with the row port to be monitored; the sampling probe is used for sampling the flue gas discharged by the discharge port to be monitored to obtain sample gas and conveying the sample gas to the flue gas analysis device; the flue gas analysis device is used for receiving the sample gas in real time and determining target detection parameters of the sample gas so as to send the target detection parameters to the control host through the communication device, wherein the target detection parameters comprise: soot concentration and/or non-methane total hydrocarbon concentration.
In an alternative embodiment, the sampling probe comprises: an oil fume sampling probe and/or a non-methane total hydrocarbon probe; wherein, the oil fume sampling probe and the non-methane total hydrocarbon probe are respectively connected with the smoke gas analysis device; the oil smoke sampling probe is used for providing a sample gas channel for measuring the oil smoke concentration; and the non-methane total hydrocarbon probe is used for providing a sample gas channel for measuring the concentration of the non-methane total hydrocarbons.
In an alternative embodiment, the flue gas analysis apparatus comprises: the oil smoke analysis device and the chromatographic analysis device are connected with the oil smoke analysis device; the oil fume analysis device is connected with the oil fume sampling probe, and the chromatographic analysis device is respectively connected with the non-methane total hydrocarbon probe and the communication device; the oil smoke analysis device is used for receiving the sample gas transmitted by the oil smoke sampling probe in real time and determining the oil smoke concentration in the sample gas so as to send the oil smoke concentration to the chromatographic analysis device; the chromatographic analysis device is used for receiving the sample gas transmitted by the non-methane total hydrocarbon probe in real time and determining the concentration of the non-methane total hydrocarbon in the sample gas so as to send the target detection parameters to the control host through the communication device.
In an alternative embodiment, the soot analyzing device comprises: the first sampling pump, the oil smoke measuring sensor, the first central processing unit and the communication interface are connected in sequence; the first sampling pump is connected with the oil fume sampling probe; the first sampling pump is used for providing sample gas sampling power and conveying the sample gas collected by the oil smoke sampling probe to the oil smoke measuring sensor; the oil smoke measuring sensor is used for detecting the oil smoke concentration in the sample gas to obtain an electric signal of the oil smoke concentration in the sample gas and sending the electric signal of the oil smoke concentration to the first central processing unit; and the first central processing unit is used for receiving the oil smoke concentration electric signal, determining the oil smoke concentration in the sample gas and sending the oil smoke concentration to the chromatographic analysis device through the communication interface.
In an alternative embodiment, the chromatography device comprises: the auxiliary gas supply device, the second sampling pump, the detection device and the second central processing unit; the auxiliary gas supply device is connected with the detection device; the second sampling pump is respectively connected with the non-methane total hydrocarbon probe and the detection device; the detection device is connected with the second central processing unit; the second central processing unit is connected with the communication device; the auxiliary gas supply device is used for providing auxiliary gas for the detection device, and the auxiliary gas comprises: carrier gas, combustion gas and combustion-supporting gas; the second sampling pump is used for providing sample gas sampling power and conveying the sample gas collected by the non-methane total hydrocarbon probe to the detection device; the detection device is used for determining a non-methane total hydrocarbon concentration electric signal in the sample gas based on the sample gas and the auxiliary gas and sending the non-methane total hydrocarbon concentration electric signal to the second central processing unit; and the second central processing unit is used for receiving the electric signal of the non-methane total hydrocarbon concentration, determining the non-methane total hydrocarbon concentration in the sample gas and sending the non-methane total hydrocarbon concentration to the control host through the communication device.
In an alternative embodiment, the auxiliary gas supply means comprises: the device comprises a carrier gas device, a combustion-supporting gas device and an electronic pressure controller; the combustion gas device is connected with the electronic pressure controller through a second plate penetrating joint and a second gas path guide pipe, the combustion-supporting gas device is respectively connected with the atmospheric environment and the electronic pressure controller, and the electronic pressure controller is connected with the detection device; the carrier gas device is used for providing carrier gas for the detection device; the combustion gas device is used for providing combustion gas for the detection device; the combustion-supporting gas device is used for filtering air and providing combustion-supporting gas for the detection device by utilizing the filtered air; and the electronic pressure controller is used for controlling the flow of the auxiliary gas input into the detection device.
In an alternative embodiment, the oxidant gas device comprises: the device comprises a molecular sieve, a first filter, silica gel, a second filter, activated carbon and an air pump which are connected in sequence.
In an alternative embodiment, the detection device comprises: a sample introduction device, a column box device and a detector; the sample introduction device is respectively connected with the second sampling pump, the electronic pressure controller and the column box device, the column box device is connected with the detector, and the detector is respectively connected with the electronic pressure controller and the second central processing unit; the sample introduction device is used for executing gas path switching of sample gas sampling and sample gas sample introduction; the column box device is used for separating the gas output by the sample injection device to obtain target gas and inputting the target gas into the detector; the detector is used for receiving the target gas, the combustion gas and the combustion-supporting gas, determining a non-methane total hydrocarbon concentration electric signal in the sample gas, and sending the non-methane total hydrocarbon concentration electric signal to the second central processing unit.
In an alternative embodiment, the sample introduction device comprises: a multi-way valve, a quantitative ring and a heating device; the heating device is used for ensuring that the multi-way valve and the quantitative ring are switched in an air path at a preset temperature.
In a second aspect, an embodiment provides a portable catering oil smoke monitoring system, the portable catering oil smoke monitoring system includes any one of the above-mentioned preceding embodiments the portable catering oil smoke monitor, further includes: a control host; the main control system with portable catering oil smoke monitor communication connection is used for control portable catering oil smoke monitor's working parameter, and, receive the target detection parameter of the flue gas that the mouth of waiting to monitor row that portable catering oil smoke monitor was confirmed discharges, wherein, the target detection parameter includes: soot concentration and non-methane total hydrocarbon concentration.
Among the prior art, can only carry out the measurement of oil smoke concentration again after bringing the sample gas of oil smoke back to the laboratory, can not guarantee measuring result's promptness and accuracy, compare with prior art, the utility model provides a portable food and beverage oil smoke monitor, include: sampling probe and flue gas analysis host computer that connect gradually, wherein, flue gas analysis host computer includes: a flue gas analysis device and a communication device; and the sampling probe is connected with the row port to be monitored; the sampling probe is used for sampling the flue gas discharged by the discharge port to be monitored to obtain sample gas and conveying the sample gas to the flue gas analysis device; flue gas analytical equipment for receive the sample gas in real time, and confirm the target detection parameter of sample gas, send the target detection parameter to the main control system through communication device, wherein, the target detection parameter includes: soot concentration and/or non-methane total hydrocarbon concentration. The portable catering oil smoke monitor can monitor the oil smoke concentration and the non-methane total hydrocarbon concentration of the smoke discharged from the exhaust port to be monitored in real time, so that the technical problem of poor timeliness and accuracy existing in an oil smoke monitoring method in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a portable catering oil fume monitor provided by an embodiment of the utility model;
fig. 2 is a schematic structural view of an optional portable catering oil fume monitor provided by an embodiment of the utility model;
fig. 3 is a schematic structural diagram of an oil smoke analyzer provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a chromatography device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an alternative chromatographic analysis device according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a sample injection device provided in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another sample injection device provided by the embodiment of the present invention.
Icon: 10-a sampling probe; 20-a flue gas analysis host; 30-a control host; 21-a flue gas analysis device; 22-a communication device; 11-oil smoke sampling probe; 12-non-methane total hydrocarbon probe; 211-oil smoke analyzing device; 212-a chromatographic device; 41-a first sampling pump; 42-a soot measurement sensor; 43-a first central processor; 44-a communication interface; 51-auxiliary gas supply means; 52-a second sampling pump; 53-a detection device; 54-a second central processor; 511-carrier gas means; 512-combustion gas unit; 513-a combustion-supporting gas device; 514-electronic pressure controller; 531-sample introduction device; 532-column box device; 533-detector; 61-a multi-way valve; 62-a quantification ring; 63-a heating device; 70-a micro printer; 80-battery.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
With the limit requirements for the catering oil fume issued by each region, the simultaneous control of the oil fume and the non-methane total hydrocarbon becomes an important content for the catering waste gas supervision, so that a method for rapidly monitoring the catering oil fume waste gas on site is very necessary. On the one hand, the exhaust condition of the waste gas can be monitored in real time, and on the other hand, the accuracy of the data can be ensured. In view of the detection method among the prior art can not in time accurate and comprehensive detect the food and beverage oil smoke, the utility model provides a portable food and beverage oil smoke monitor for alleviate above-mentioned technical problem.
Example one
The embodiment provides a portable catering oil smoke monitor, as shown in fig. 1, includes: sampling probe 10 and flue gas analysis host computer 20 that connect gradually, wherein, flue gas analysis host computer 20 includes: a flue gas analysis device 21 and a communication device 22; and the sampling probe 10 is connected to the row of ports to be monitored.
And the sampling probe 10 is used for sampling the flue gas discharged by the discharge port to be monitored to obtain sample gas, and conveying the sample gas to the flue gas analysis device 21.
Flue gas analysis device 21 is used for receiving sample gas in real time, and confirms the target detection parameter of sample gas to send the target detection parameter to control host 30 through communication device 22, wherein, the target detection parameter includes: soot concentration and/or non-methane total hydrocarbon concentration.
The utility model provides a portable catering oil smoke monitor mainly includes sampling probe 10 and flue gas analysis host 20, sampling probe 10 is connected with the row's mouth of waiting to monitor, be used for the flue gas that the row's mouth of waiting to monitor discharged samples, and then obtain the sample gas that flue gas analysis host 20 analysis was used, flue gas analysis host 20 includes flue gas analytical equipment 21 and communication device 22, flue gas analytical equipment 21 is the device that is used for carrying out detection and analysis to the target detection parameter (oil smoke concentration and/or non-methane total hydrocarbon concentration) in the sample gas received, the result that obtains of detection will be sent to control host 30 through communication device 22, and then the user can know the target detection parameter through control host 30, control host 30 can adopt electronic equipment such as industry level panel computer or smart mobile phone, can provide the control mode of different authority levels for user's extension, if the control host 30 is not used, the portable catering oil fume monitor can also monitor and analyze the collected sample gas according to a preset test rule, and store or automatically output an analysis result.
Among the prior art, can only carry out the measurement of oil smoke concentration again after bringing the sample gas of oil smoke back to the laboratory, can not guarantee measuring result's promptness and accuracy, compare with prior art, the utility model provides a portable food and beverage oil smoke monitor, include: sampling probe 10 and flue gas analysis host computer 20 that connect gradually, wherein, flue gas analysis host computer 20 includes: a flue gas analysis device 21 and a communication device 22; and the sampling probe is connected with the row port to be monitored; the sampling probe 10 is used for sampling the flue gas discharged from the discharge port to be monitored to obtain sample gas, and conveying the sample gas to the flue gas analysis device 21; flue gas analysis device 21 is used for receiving sample gas in real time, and confirms the target detection parameter of sample gas to send the target detection parameter to control host 30 through communication device 22, wherein, the target detection parameter includes: soot concentration and/or non-methane total hydrocarbon concentration. The portable catering oil smoke monitor can monitor the oil smoke concentration and the non-methane total hydrocarbon concentration of the smoke discharged from the exhaust port to be monitored in real time, so that the technical problem of poor timeliness and accuracy existing in an oil smoke monitoring method in the prior art is solved, and the future oil smoke monitoring requirement is met.
The above is a simple description of the structure of the portable catering oil fume monitor provided by the present invention, and the following is a detailed description of the specific components involved therein.
In an alternative embodiment, as shown in FIG. 2, the sampling probe 10 includes: an oil fume sampling probe 11 and/or a non-methane total hydrocarbon probe 12; wherein, the oil smoke sampling probe 11 and the non-methane total hydrocarbon probe 12 are respectively connected with the smoke gas analysis device 21.
And the oil smoke sampling probe 11 is used for providing a sample gas channel for measuring the concentration of the oil smoke.
A non-methane total hydrocarbon probe 12 for providing a sample gas channel for measuring non-methane total hydrocarbon concentration.
In particular, it has been pointed out above that, at present, each functional department pays attention to the monitoring of the concentration of oil smoke in the catering oil smoke and the concentration of non-methane total hydrocarbon, therefore, the sampling probe in the utility model comprises the oil smoke sampling probe 11 and/or the non-methane total hydrocarbon probe 12, namely, the oil smoke and the non-methane total hydrocarbon can be monitored simultaneously, or one of the oil fume sampling probe 11 and the non-methane total hydrocarbon probe 12 can be monitored independently, and as the name suggests, the probes are arranged for measuring different target detection parameters, in order to facilitate sampling of the sample gas, the oil fume sampling probe 11 and the non-methane total hydrocarbon probe 12 preferably adopt 316L stainless steel probes with holes on the front end sides, based on different functions of various gas channels, the oil fume sampling probe 11 is connected with the flue gas analysis device 21 through a stainless steel connecting pipe, instead, the non-methane total hydrocarbon probe 12 is connected to the flue gas analysis device 21 through a polytetrafluoroethylene tube.
It should be noted that, since the temperature has a great influence on the analysis result of the non-methane total hydrocarbons, and the analysis of the non-methane total hydrocarbons needs to be performed under a high temperature condition, therefore, the whole process from sampling to analysis of the non-methane total hydrocarbons needs to be performed under a high temperature condition, then a heating device needs to be arranged outside the teflon tube connected to the flue gas analysis device 21 to ensure that the sampled sample gas is conveyed at a preset temperature, in some embodiments, the heating temperature is set to 120 ℃ or even higher, preferably, the heating wire is wrapped outside the teflon tube, and then the teflon tube is insulated by using an insulation material, and a temperature measuring resistor can be further arranged to be connected to the control host 30 to observe and regulate the temperature of the teflon tube in real time.
In addition, to the food and beverage oil smoke monitor that this embodiment provided, the user can increase the structure that needs are integrated according to actual need, and then accomplishes the measurement of multiple oil smoke parameter, for example, sampling probe department can also add velocity of flow probe and humiture probe, sets up corresponding sensor and probe connection in flue gas analytical equipment 21 is inside simultaneously, and then can accomplish the measurement of flue gas pressure, flue gas velocity of flow and flue gas humiture.
In an alternative embodiment, as shown in fig. 2, the flue gas analysis device 21 comprises: a smoke analyzer 211 and a chromatography analyzer 212 connected to the smoke analyzer 211; wherein, the oil smoke analysis device 211 is connected with the oil smoke sampling probe 11, and the chromatographic analysis device 212 is respectively connected with the non-methane total hydrocarbon probe 12 and the communication device 22.
And the oil smoke analysis device 211 is configured to receive the sample gas transmitted by the oil smoke sampling probe 11 in real time, and determine the oil smoke concentration in the sample gas so as to send the oil smoke concentration to the chromatographic analysis device 212.
And the chromatographic analysis device 212 is used for receiving the sample gas transmitted by the non-methane total hydrocarbon probe 12 in real time and determining the concentration of the non-methane total hydrocarbons in the sample gas so as to send the target detection parameters to the control host 30 through the communication device 22.
Specifically, in view of the difference between the measurement method of the oil smoke concentration and the measurement method of the non-methane total hydrocarbon, the embodiment of the present invention specifically divides the smoke analyzing device 21 into the oil smoke analyzing device 211 and the chromatographic analyzing device 212, the oil smoke analyzing device 211 is mainly used for detecting and analyzing the oil smoke concentration of the sample gas collected by the oil smoke sampling probe 11, the chromatographic analyzing device 212 is mainly used for detecting and analyzing the non-methane total hydrocarbon concentration of the sample gas collected by the non-methane total hydrocarbon probe 12, after the measurement, the oil smoke analyzing device 211 sends the analysis result to the chromatographic analyzing device 212, the chromatographic analyzing device 212 sends the non-methane total hydrocarbon concentration obtained by the self-analysis and the received oil smoke concentration to the control host 30 through the communication device 22, preferably, the oil smoke analyzing device 211 is connected with the chromatographic analyzing device 212 through a data transmission cable, thereby ensuring the stability and the timeliness of data transmission, the user also can set up to oil smoke analytical element according to actual demand and adopt wireless communication's mode to carry out the transmission of oil smoke concentration, and then direct wireless transmission to the main control system.
The composition of the soot analyzing apparatus is briefly described above, and the composition of the soot analyzing device 211 is described in detail below.
In an alternative embodiment, as shown in fig. 3, the soot analyzing device 211 includes: a first sampling pump 41, a lampblack measuring sensor 42, a first central processing unit 43 and a communication interface 44 which are connected in sequence; the first sampling pump 41 is connected to the lampblack sampling probe 11.
And the first sampling pump 41 is used for providing sample gas sampling power and conveying the sample gas collected by the oil smoke sampling probe 11 to the oil smoke measuring sensor 42.
And the oil smoke measuring sensor 42 is configured to detect the oil smoke concentration in the sample gas, obtain an electrical signal of the oil smoke concentration in the sample gas, and send the electrical signal of the oil smoke concentration to the first central processing unit 43.
The first cpu 43 is configured to receive the electrical signal of oil smoke concentration, determine the oil smoke concentration in the sample gas, and send the oil smoke concentration to the chromatography device 212 through the communication interface 44.
Specifically, the oil smoke analyzing device 211 is provided with a first sampling pump 41, an oil smoke measuring sensor 42, a first central processing unit 43 and a communication interface 44, according to the testing requirement, the sampling power provided by the first sampling pump 41 is needed when the oil smoke concentration is measured, the first central processing unit 43 can be used to control the working state of the first sampling pump 41, the sample gas collected by the oil smoke sampling probe 11 is transmitted to the oil smoke measuring sensor 42, the oil smoke measuring sensor 42 can determine the oil smoke concentration electric signal after receiving the sample gas, and the particulate matter concentration electric signal in the sample gas, after obtaining the electric signal, the electric signal is transmitted to the first central processing unit 43 connected with the oil smoke measuring sensor 42, the first central processing unit 43 can analyze the received electric signal, and further determine the oil smoke concentration and the particulate matter concentration in the sample gas, the first cpu 43 then sends the measurement results to the chromatography device 212 via the communication interface 44.
If the measurement of the flue gas pressure, the flue gas flow velocity and the flue gas temperature and humidity needs to be completed simultaneously, when the flow velocity probe and the temperature and humidity probe are additionally arranged at the sampling probe, a flow velocity sensor, a pressure sensor and a temperature and humidity sensor which are connected with the first central processing unit 43 need to be correspondingly arranged on the oil smoke measuring device, in some embodiments, the flow velocity probe is connected with the flow velocity sensor through a pitot tube made of two 316L stainless steel tubes, wherein one stainless steel tube is used for measuring the full pressure of the flue gas, and the other stainless steel tube is used for measuring the static pressure of the; the pressure sensor is connected with the stainless steel pipe for measuring static pressure in the pitot tube; the humiture probe can adopt the humiture sensor probe of integral type, is connected with temperature and humidity sensor through a stainless steel pipe, and the velocity of flow signal, the pressure electricity signal and the humiture electricity signal that above-mentioned sensor measurement obtained all send to first central processing unit 43, and first central processing unit 43 carries out the analysis with above-mentioned electric signal, and then obtains flue gas pressure, flue gas velocity of flow and flue gas humiture, then utilizes communication interface 44 to send to chromatography device 212 in the lump.
The specific structure of the flue gas analyzer of the present invention is described in detail above, and the structure of the chromatographic analyzer 212 is described in detail below.
In an alternative embodiment, as shown in fig. 4, the chromatographic device 212 includes: an auxiliary air supply device 51, a second sampling pump 52, a detection device 53 and a second central processing unit 54; the auxiliary air supply device 51 is connected with the detection device 53; the second sampling pump 52 is respectively connected with the non-methane total hydrocarbon probe 12 and the detection device 53; the detection device 53 is connected with the second central processor 54; the second central processor 54 is connected to the communication device 22.
An auxiliary gas supply device 51 for supplying an auxiliary gas to the detection device 53, the auxiliary gas comprising: carrier gas, combustion gas and combustion-supporting gas.
And the second sampling pump 52 is used for providing a sample gas sampling power and conveying the sample gas collected by the non-methane total hydrocarbon probe 12 to the detection device 53.
And a detecting device 53 for determining an electrical signal of the non-methane total hydrocarbon concentration in the sample gas based on the sample gas and the auxiliary gas, and sending the electrical signal of the non-methane total hydrocarbon concentration to the second central processor 54.
And a second central processor 54 for receiving the electrical signal of the non-methane total hydrocarbon concentration, determining the non-methane total hydrocarbon concentration in the sample gas, and sending the non-methane total hydrocarbon concentration to the control host 30 through the communication device 22.
Specifically, the chromatography device 212 is also provided with a second sampling pump 52 having the same function as the first sampling pump 41 and mainly used for providing sampling power, the second sampling pump 52 is connected to the non-methane total hydrocarbon probe 12 and is used for conveying the sample gas collected by the non-methane total hydrocarbon probe 12 to the detection device 53, the detection device 53 is also connected to the auxiliary gas supply device 51 in view of the measurement conditions of the chromatography method, and the auxiliary gas supply device 51 is mainly used for providing the detection device 53 with auxiliary gas required for concentration detection, and the chromatography device includes: carrier gas, combustion gas and combustion-supporting gas. The detection device 53 is capable of determining the non-methane total hydrocarbon concentration electrical signal upon receiving the sample gas and the auxiliary gas, and it should be noted that the data obtained by the detection device 53 is sent to the second cpu 54, but the gas generated during the detection is directly discharged to the atmosphere.
In an alternative embodiment, as shown in fig. 5, the auxiliary gas supply means 51 comprises: a carrier gas device 511, a combustion gas device 512, a combustion-supporting gas device 513 and an electronic pressure controller 514; the carrier gas device 511 is connected with the electronic pressure controller 514 through a first plate-through joint and a first gas path conduit, the combustion gas device 512 is connected with the electronic pressure controller 514 through a second plate-through joint and a second gas path conduit, the combustion-supporting gas device 513 is respectively connected with the atmospheric environment and the electronic pressure controller 514, and the electronic pressure controller 514 is connected with the detection device 53.
And a carrier gas device 511 for supplying a carrier gas to the detection device 53.
And the combustion gas device 512 is used for providing combustion gas for the detection device 53.
And an oxidant gas device 513, configured to filter the air and provide oxidant gas for the detection device 53 by using the filtered air.
An electronic pressure controller 514 for controlling the flow of the assist gas input to the detecting device 53.
In an embodiment of the present invention, the auxiliary gas includes: a carrier gas, a combustion gas and an oxidant gas, and correspondingly, the auxiliary gas supply device 51 includes: the carrier gas device 511, the combustion gas device 512, the combustion gas device 513 and the Electronic Pressure controller 514(Electronic Pressure Control, EPC), the structural connection relationship of each device has been described above, it should be noted that, the carrier gas device 511 and the combustion gas device 512 are both connected with the Electronic Pressure controller 514 through the corresponding through plate joints and gas path conduits, in some embodiments, the carrier gas in the carrier gas device 511 can be high-purity nitrogen gas or helium gas, preferably, the utility model discloses a small-size high-Pressure nitrogen gas cylinder, and set up the nitrogen gas cylinder inside the chromatography device 212, have a Pressure regulating valve at the outlet of the nitrogen gas cylinder, can look over the Pressure value outside the chromatography device 212, through the Pressure regulating valve, on the one hand can adjust the gas output Pressure, protect the EPC; on the other hand, the residual gas capacity can be judged according to the pressure condition in the gas cylinder, and an operator is reminded of filling gas in time. Due to the adoption of the mode of penetrating plate access, an inlet of external carrier gas is provided, the nitrogen of the steel cylinder can be connected, and convenience is provided for the condition of large amount of carrier gas.
The utility model discloses a preferred low pressure metal hydrogen storage bottle that adopts of combustion gas device 512 replaces traditional medium-high pressure hydrogen storage bottle to provide hydrogen, the utility model discloses a combustion gas device 512 is small, and is integrated inside chromatography device 212, can use hydrogen generator to aerify and need not special aerating device, and the operation is safe simple and convenient. The plate-through access mode is also used, an external hydrogen inlet is provided, and the hydrogen generator and the hydrogen steel cylinder can be connected, so that convenience is provided for the condition of large hydrogen consumption.
The utility model provides a combustion-supporting gas device 513 is connected with atmospheric environment and electronic pressure controller 514 respectively for provide the required combustion-supporting gas of chromatographic analysis (air), compare with other combustion-supporting gas cylinders of using or generators on the market, this structural design can effectual reduction equipment volume, need not frequently to change the gas cylinder, can provide the combustion-supporting gas after removing the hydrocarbon at any time, reduces the maintenance work volume, practices thrift the equipment maintenance cost.
The utility model provides an electronic pressure controller 514 adopts miniature EPC, but a EPC simultaneous control multichannel gas business turn over flow path, and the effectual equipment volume that has reduced of structure of integration, a plurality of electronic pressure controller 514 in figure 5 represent a plurality of gas circuit channels of miniature EPC.
In an alternative embodiment, the oxidant gas device 513 includes: the device comprises a molecular sieve, a first filter, silica gel, a second filter, activated carbon and an air pump which are connected in sequence.
In order to guarantee the effect of filtration, can also install primary filter at the position that combustion-supporting gas device 513 links to each other with the atmosphere, filter the large granule material in the atmosphere, then reuse combustion-supporting gas device 513 and carry out further filtration, the utility model provides a combustion-supporting gas device 513 mainly by the molecular sieve, first filter, silica gel, second filter and active carbon according to certain proportion of packing place in polytetrafluoroethylene pipe, the air pump is connected with the active carbon interface end of above-mentioned polytetrafluoroethylene pipe for provide the power of combustion-supporting gas input.
Specifically, the molecular sieve plays a role in adsorption, impurities, organic matters, inorganic matters, water and the like of gas input into the molecular sieve are adsorbed, and the first filter and the second filter play a role in layering the molecular sieve, silica gel and activated carbon on one hand and can also filter partial particles on the other hand; the silica gel is mainly used for adsorbing moisture in gas, and the active carbon and the molecular sieve are cooperated to play a complementary role and are mainly used for adsorbing organic matters, inorganic matters and moisture. Thus, the filtered gas passing through the combustion-supporting gas device 513 can meet the standards of the combustion-supporting gas in the chromatographic analysis.
In an alternative embodiment, as shown in fig. 5, the detection device 53 comprises: a sample introduction device 531, a column box device 532 and a detector 533; the sample introduction device 531 is connected to the second sampling pump 52, the electronic pressure controller 514, and the column box device 532, respectively, the column box device 532 is connected to the detector 533, and the detector 533 is connected to the electronic pressure controller 514 and the second central processor 54, respectively.
And the sample introduction device 531 is used for executing gas path switching of sample gas sampling and sample gas sample introduction.
And the column box device 532 is used for separating the gas output by the sample introduction device 531 to obtain target gas, and inputting the target gas into the detector 533.
The detector 533 is configured to receive the target gas, the combustion gas, and the combustion-supporting gas, determine an electrical signal of the concentration of the non-methane total hydrocarbons in the sample gas, and send the electrical signal of the concentration of the non-methane total hydrocarbons to the second central processing unit 54.
Specifically, the utility model provides a detection device 53 is including sampling device 531, post case device 532 and the detector 533 that connect gradually, and wherein, sampling device 531's input is connected with second sampling pump 52 and electronic pressure controller 514 respectively, and the input of detector 533 is connected with the output of electronic pressure controller 514 except that being connected with post case device 532's output, and the detection data output that detector 533 obtained is to central processing unit.
When the sampling device 531 performs sampling of the sample gas, the sample gas delivered by the second sampling pump 52 is connected; after sampling, when the sample introduction device 531 performs sample gas introduction, the carrier gas delivered by the electronic pressure controller 514 is accessed, and then the sample gas is delivered to the column box device 532, and the column box device 532 can separate the gas input therein, and then obtain the target gas, and deliver the target gas to the detector 533. The detector 533 is connected to the target gas and the combustion-supporting gas and the combustion gas output by the electronic pressure controller 514, and is further capable of determining the electric signal of the concentration of the non-methane total hydrocarbons in the sample gas and sending the electric signal of the concentration of the non-methane total hydrocarbons to the second central processor 54. Preferably, the detector 533 of the present invention is a micro FID detector (hydrogen ion flame detector).
It has been described above that the measurement process of the non-methane total hydrocarbon concentration needs to be performed at a high temperature, so the sample introduction device 531, the column box device 532 and the detector 533 are all provided with corresponding heating devices to ensure that the temperature required for accurate detection is reached.
In an alternative embodiment, as shown in fig. 6 and 7, sample introduction device 531 comprises: a multi-way valve 61, a dosing ring 62 and a heating device 63; wherein, heating device 63 is used for guaranteeing that multiport valve 61 and ration ring 62 carry out the gas circuit switching under predetermineeing the temperature.
Specifically, utilize multi-way valve 61 and quantitative ring 62 to constitute the gas circuit auto-change over device that sample gas sampling and sample gas were advanced, the embodiment of the utility model provides a do not restrict concrete connection structure, as long as can realize that the gas circuit switches can, heating device 63 wraps up in the outside of multi-way valve 61 and quantitative ring 62 for multi-way valve 61 and quantitative ring 62 provide the heat source, guarantee that multi-way valve 61 and quantitative ring 62 operate under the condition of predetermineeing the temperature, heating device 63 can be the heating piece, heating plate or other carriers that have the heating heat preservation function, the utility model discloses select the heating piece in sampling device 531, fix multi-way valve 61 in inside, can greatly promote rate of rising temperature.
Two alternative embodiments are illustrated below:
fig. 6 shows a sample injection device 531 for measuring the concentration of non-methane total hydrocarbons by using a back-flushing method, specifically, a single valve (ten-way valve) and a single column (PQ) are used to monitor the non-methane total hydrocarbons.
Fig. 7 is a mode of measuring the concentration of non-methane total hydrocarbons by a national standard method, and can also realize the function of monitoring the non-methane total hydrocarbons and benzene series simultaneously, the sample introduction device 531 adopts a differential method, and the non-methane total hydrocarbons are monitored by using the structures of 3 columns (total hydrocarbon column, 5A column, PQ column), 2 quantitative rings 62, and 2 multi-way valves 61 (ten-way valve and six-way valve).
The column box device 532 in this embodiment includes a chromatographic column and a heating device wrapping the chromatographic column, wherein an input end of the chromatographic column is connected with an output end of the multi-way valve 61 in the sample introduction device 531, an output end of the chromatographic column is connected with an input end of the detector 533, the chromatographic column is used for separating gas output by the multi-way valve 61 to obtain target gas, the target gas is input into the detector 533, the column box device 532 selects a heating wire to heat the chromatographic column, and the heat preservation cotton is filled outside to preserve heat, so that the weight and the volume of the heating device are reduced.
The second cpu 54 in this embodiment can receive a control command from the control host 30, and further control the working state of the components connected thereto, for example, can control sampling, sample introduction, control the gas flow, adjust the temperature of all heating devices, protect the temperature, and the like, and upload the feedback signal to the control host 30.
In an optional embodiment, the portable catering lampblack monitor further comprises: the battery 80 and the micro printer 70 are arranged inside the portable catering oil fume monitor, the battery 80 is connected with a power supply input port of the second central processing unit 54 through an external through-board interface and a power cable, and the micro printer 70 is connected with the central processing unit. It should be noted that the power supply connection mode can support the use of the built-in battery 80 for power supply and can also support the use of an external power supply for power supply, the charging of the battery 80 and the use of equipment are not affected with each other, the integrated design is met, and meanwhile, convenience is provided for off-site testers such as testing and debugging and the condition that long-time power consumption is needed.
The micro printer 70 is integrated inside the chromatography device 212 and is used for printing the data obtained by detection, preferably, a micro stylus printer is adopted, compared with a traditional external printer connected, the rapid printing function during field analysis is realized, and a basis is provided for field law enforcement monitoring.
In this embodiment, the portable catering lampblack monitor and the control host 30 communicate with each other by using the communication device 22, and the communication mode of the communication device 22 includes at least one of the following: a Bluetooth communication mode, a WIFI communication mode and a mobile data communication mode. Preferably, the portable catering oil fume monitor is in communication connection with the control host 30 in a WIFI communication mode, and the control host 30 is connected with the micro printer 70 in a Bluetooth communication mode.
To sum up, the utility model provides a portable food and beverage oil smoke monitor, on-the-spot oil smoke and the total hydrocarbon of non-methane are monitored simultaneously to its integrative structural design, satisfy the monitoring demand at present and the on-the-spot of food and beverage oil smoke in the future, carrier gas device 511, the design of wearing the board joint of gas device 512 and battery 80, can provide convenience for the condition that needs a large amount of gas and long-time power consumption such as test, debugging, and, through internal configuration micro printer 70, can print monitoring data anytime and anywhere, realize the on-the-spot fast play number, provide the foundation for the monitoring of field law enforcement.
Example two
This embodiment provides a portable catering oil smoke monitoring system, this portable catering oil smoke monitoring system include in above-mentioned embodiment one portable catering oil smoke monitor, still include: and a control host.
Control host computer and portable food and beverage oil smoke monitor communication connection for control portable food and beverage oil smoke monitor's working parameter, and, receive the target detection parameter of the flue gas that the portable food and beverage oil smoke monitor is confirmed treating monitoring row mouth and discharging, wherein, the target detection parameter includes: soot concentration and non-methane total hydrocarbon concentration.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a portable food and beverage oil smoke monitor which characterized in that includes: sampling probe and flue gas analysis host computer that connect gradually, wherein, flue gas analysis host computer includes: a flue gas analysis device and a communication device; the sampling probe is connected with the row port to be monitored;
the sampling probe is used for sampling the flue gas discharged by the discharge port to be monitored to obtain sample gas and conveying the sample gas to the flue gas analysis device;
the flue gas analysis device is used for receiving the sample gas in real time and determining target detection parameters of the sample gas so as to send the target detection parameters to the control host through the communication device, wherein the target detection parameters comprise: soot concentration and/or non-methane total hydrocarbon concentration.
2. The portable catering lampblack monitor according to claim 1, wherein the sampling probe comprises: an oil fume sampling probe and/or a non-methane total hydrocarbon probe; wherein, the oil fume sampling probe and the non-methane total hydrocarbon probe are respectively connected with the smoke gas analysis device;
the oil smoke sampling probe is used for providing a sample gas channel for measuring the oil smoke concentration;
and the non-methane total hydrocarbon probe is used for providing a sample gas channel for measuring the concentration of the non-methane total hydrocarbons.
3. The portable catering lampblack monitor according to claim 2, wherein the flue gas analysis device comprises: the oil smoke analysis device and the chromatographic analysis device are connected with the oil smoke analysis device; the oil fume analysis device is connected with the oil fume sampling probe, and the chromatographic analysis device is respectively connected with the non-methane total hydrocarbon probe and the communication device;
the oil smoke analysis device is used for receiving the sample gas transmitted by the oil smoke sampling probe in real time and determining the oil smoke concentration in the sample gas so as to send the oil smoke concentration to the chromatographic analysis device;
the chromatographic analysis device is used for receiving the sample gas transmitted by the non-methane total hydrocarbon probe in real time and determining the concentration of the non-methane total hydrocarbon in the sample gas so as to send the target detection parameters to the control host through the communication device.
4. The portable catering lampblack monitor according to claim 3, wherein the lampblack analysis device comprises: the first sampling pump, the oil smoke measuring sensor, the first central processing unit and the communication interface are connected in sequence; the first sampling pump is connected with the oil fume sampling probe;
the first sampling pump is used for providing sample gas sampling power and conveying the sample gas collected by the oil smoke sampling probe to the oil smoke measuring sensor;
the oil smoke measuring sensor is used for detecting the oil smoke concentration in the sample gas to obtain an electric signal of the oil smoke concentration in the sample gas and sending the electric signal of the oil smoke concentration to the first central processing unit;
and the first central processing unit is used for receiving the oil smoke concentration electric signal, determining the oil smoke concentration in the sample gas and sending the oil smoke concentration to the chromatographic analysis device through the communication interface.
5. The portable catering lampblack monitor according to claim 3, wherein the chromatographic analysis device comprises: the auxiliary gas supply device, the second sampling pump, the detection device and the second central processing unit; the auxiliary gas supply device is connected with the detection device; the second sampling pump is respectively connected with the non-methane total hydrocarbon probe and the detection device; the detection device is connected with the second central processing unit; the second central processing unit is connected with the communication device;
the auxiliary gas supply device is used for providing auxiliary gas for the detection device, and the auxiliary gas comprises: carrier gas, combustion gas and combustion-supporting gas;
the second sampling pump is used for providing sample gas sampling power and conveying the sample gas collected by the non-methane total hydrocarbon probe to the detection device;
the detection device is used for determining a non-methane total hydrocarbon concentration electric signal in the sample gas based on the sample gas and the auxiliary gas and sending the non-methane total hydrocarbon concentration electric signal to the second central processing unit;
and the second central processing unit is used for receiving the electric signal of the non-methane total hydrocarbon concentration, determining the non-methane total hydrocarbon concentration in the sample gas and sending the non-methane total hydrocarbon concentration to the control host through the communication device.
6. The portable catering lampblack monitor according to claim 5, wherein the auxiliary gas supply device comprises: the device comprises a carrier gas device, a combustion-supporting gas device and an electronic pressure controller; the combustion gas device is connected with the electronic pressure controller through a second plate penetrating joint and a second gas path guide pipe, the combustion-supporting gas device is respectively connected with the atmospheric environment and the electronic pressure controller, and the electronic pressure controller is connected with the detection device;
the carrier gas device is used for providing carrier gas for the detection device;
the combustion gas device is used for providing combustion gas for the detection device;
the combustion-supporting gas device is used for filtering air and providing combustion-supporting gas for the detection device by utilizing the filtered air;
and the electronic pressure controller is used for controlling the flow of the auxiliary gas input into the detection device.
7. The portable catering lampblack monitor according to claim 6, wherein the combustion-supporting gas device comprises: the device comprises a molecular sieve, a first filter, silica gel, a second filter, activated carbon and an air pump which are connected in sequence.
8. The portable catering lampblack monitor according to claim 6, wherein the detection device comprises: a sample introduction device, a column box device and a detector; the sample introduction device is respectively connected with the second sampling pump, the electronic pressure controller and the column box device, the column box device is connected with the detector, and the detector is respectively connected with the electronic pressure controller and the second central processing unit;
the sample introduction device is used for executing gas path switching of sample gas sampling and sample gas sample introduction;
the column box device is used for separating the gas output by the sample injection device to obtain target gas and inputting the target gas into the detector;
the detector is used for receiving the target gas, the combustion gas and the combustion-supporting gas, determining a non-methane total hydrocarbon concentration electric signal in the sample gas, and sending the non-methane total hydrocarbon concentration electric signal to the second central processing unit.
9. The portable catering lampblack monitor according to claim 8, wherein the sample injection device comprises: a multi-way valve, a quantitative ring and a heating device;
the heating device is used for ensuring that the multi-way valve and the quantitative ring are switched in an air path at a preset temperature.
10. A portable catering oil smoke monitoring system, characterized in that the portable catering oil smoke monitoring system comprises the portable catering oil smoke monitor of any one of claims 1-9, and further comprises: a control host;
the main control system with portable catering oil smoke monitor communication connection is used for control portable catering oil smoke monitor's working parameter, and, receive the target detection parameter of the flue gas that the mouth of waiting to monitor row that portable catering oil smoke monitor was confirmed discharges, wherein, the target detection parameter includes: soot concentration and non-methane total hydrocarbon concentration.
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| CN202020022360.2U CN211453265U (en) | 2020-01-06 | 2020-01-06 | Portable catering oil smoke monitor and portable catering oil smoke monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432932A (en) * | 2021-06-08 | 2021-09-24 | 北京市劳动保护科学研究所 | Catering oil smoke pollutant sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432932A (en) * | 2021-06-08 | 2021-09-24 | 北京市劳动保护科学研究所 | Catering oil smoke pollutant sampling device |
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