TWI657887B - ALL-IN-ONE VOCs MEASUREMENT INSTRUMENT - Google Patents

Abstract

An integrated volatile organic substance analysis machine is provided with a machine body, and a maintenance interface and an analysis space including a temperature control module, a sampling module, a detection module and a calculation module are provided in the machine body. The component parts in the analysis space are maintained through the maintenance interface, and the volatile organic substances in the gas to be analyzed in the near-end or far-end analysis environment are analyzed, whereby the integrated and integrated analysis machine of the present invention , Can provide streamlined on-site configuration, not only can reduce the use of space, but also facilitate the inspection and maintenance operations of the analysis machine.

Description

Integrated VOC Analyzer

The present invention relates to a volatile organic substance analysis technology, and in particular, it relates to an integrated volatile organic substance analysis machine with an integrated design.

With the progress of human industry, air pollution is gradually increasing. Therefore, the major industrial countries in the world have established regulatory standards for the emission of volatile organic compounds (VOCs), and there is an increasingly strict trend, so that industrial gas environments are often required to be retrofitted. A measurement system that can measure the composition of volatile organic substances in a gas.

The above-mentioned volatile organic substances generally refer to organic compounds with a boiling point below 250 ° C under standard conditions (0 ° C and 760mmHg). Some even directly define volatile organic substances as all organics that exist in the atmosphere in a gaseous manner. The compound includes organic compounds such as total hydrocarbons (abbreviated as THC) and non-methane total hydrocarbons (abbreviated as NMHC).

The analysis and treatment of conventional volatile organic substances usually includes process steps such as sampling the gas to be measured, and detecting and analyzing the volatile organic substances in the gas to be measured. However, in the conventional technology, each of the above processes is processed. The steps are usually completed by the cooperation of testing machines produced by different manufacturers, so it is necessary to leave a large space on the site to place these testing machines. In addition, the technology used by each manufacturer to develop testing machines may be different. , Resulting in inspection machines produced by various manufacturers When it is used for the analysis and processing of volatile organic substances, there will be difficulties in integration. In addition to being not conducive to the operation of the operator, it is also not conducive to the subsequent maintenance and repair operations of the equipment maintenance staff.

In view of this, how to provide a streamlined configuration of an integrated volatile organic substance analysis machine to overcome the above-mentioned shortcomings of the conventional technology is the technical problem to be solved in this case.

In view of the above-mentioned problems of the prior art, the main object of the present invention is to provide an integrated volatile organic substance analysis machine to provide a simplified on-site configuration and reduce the use space for the convenience of production, assembly and maintenance.

Another object of the present invention is to provide an integrated volatile organic substance analysis machine, which can integrate operations such as sampling and detection of the gas to be analyzed, exhaust gas discharge, and data analysis and processing, and provide an automated process for volatile organic substance analysis.

Another object of the present invention is to provide an integrated volatile organic substance analysis machine, which can provide a self-detection function of the analysis machine.

In order to achieve the above-mentioned object and other objects, the present invention provides an integrated volatile organic substance analysis machine, which uses a sampling tube to load a remote analysis gas in a remote analysis environment for volatile organic substance analysis. Or, a near-end gas to be analyzed is loaded into a near-end analysis environment for volatile organic substance analysis. During the analysis, environmental parameters of the far-end gas to be analyzed can be collected, and a far-end can be generated accordingly. Collecting information, the integrated volatile organic substance analysis machine includes: a machine body, which is adjacent to the near-end analysis environment but far away from the remote analysis environment, and is provided with a maintenance interface and an analysis space inside. The analysis space is provided with a temperature control module, a sampling module, a detection module and a calculation module. The maintenance interface is connected to the analysis space, and the maintenance interface can be used in the In the analysis space, the temperature control module, the sampling module, the detection module and the calculation module are maintained; wherein, the sampling module is loaded with the far and near-end gas to be analyzed; the detection module is received The far-end and near-end gas to be analyzed sent by the sampling module to detect the composition or concentration of volatile organic substances of the far-end and near-end gas to be analyzed, and output a remote detection message or a near-end Detection information; the calculation module calculates the analysis parameters of the volatile organic substances in the far and near gas to be analyzed according to the remote collected information and the far and near detection information; and the temperature control module provides The heat increases the saturated vapor pressure of the gas to be analyzed at the far and near ends of the sampling module and the detection module, and allows the current vapor pressure of the gas at the far and near ends of the sampling module and the detection module to be analyzed. Less than the corresponding saturated vapor pressure. .

Preferably, in the above-mentioned integrated volatile organic substance analysis machine, the far-end and near-end gas to be analyzed is a standard gas or a sample gas.

Preferably, in the above integrated volatile organic substance analysis machine, the far-end and near-end gas to be analyzed is a standard gas, and the calculation module further obtains the near-end gas to be analyzed based on the near-end detection information. The composition or concentration of volatile organic substances, so as to provide automatic correction or abnormal detection to the detection module. The calculation module also obtains the volatilization of the far and near gas to be analyzed based on the far and near detection information. The degree of deviation of the component or concentration of the organic substance, thereby providing automatic detection of abnormality to the sampling tube.

Preferably, the integrated volatile organic substance analysis machine further includes a clean gas supplier, which provides a positive pressure clean air flow to the sampling tube when a predetermined time arrives or when the sampling tube detects an abnormality. To clean the sampling tube.

Preferably, in the above-mentioned integrated volatile organic substance analysis machine, the detection module further includes a first sample storage unit for storing a quantity of the far and near end gas to be analyzed; a carrier gas provider , Is used to provide a carrier gas, wherein the carrier gas is not related to the volatility of the far and near gas to be analyzed Organic substances undergo chemical reactions; a negative pressure provider is used to provide negative pressure; a sample separator is used to separate and output the volatile organic substances in the far and near gas to be analyzed in order according to the type; a sample The detector receives the volatile organic substances output by the sample separator in order to detect the components or concentrations of the volatile organic substances of the far and near end gas to be analyzed; and an injection valve, which is Switch between load state (LOAD) and injection state (INJECT); wherein, when the injection valve is switched to the sample load state, the injection valve is connected to the negative pressure provided by the negative pressure provider, so that the The far and near gas to be analyzed enters the first sample storage and is stored; when the injection valve is switched to the injection state, the injection valve is connected to the carrier gas provided by the carrier gas supplier, so that the first A quantitative amount of the far and near gas to be analyzed stored in a sample reservoir enters the sample separator, and the volatile organic substances in the far and near gas to be analyzed are sequentially output to the sample separator through the sample separator to The sample detector Detection.

Preferably, in the above-mentioned integrated volatile organic substance analysis machine, the detection module further includes a second sample storage for storing a quantity of the far-end and near-end gas to be analyzed, wherein when the injection valve is switched When the sample loading state is reached, the injection valve is connected to the negative pressure provided by the negative pressure provider, so that the far and near end analysis gas enters the second sample storage for storage; when the injection valve is switched to the In the sample injection state, the injection valve is connected to the carrier gas provided by the carrier gas supplier, so that the quantitative far and near end gas to be analyzed stored in the second sample reservoir enters the sample detector for detection.

Preferably, in the above-mentioned integrated volatile organic substance analysis machine, the detection module further includes a filter, which receives the negative pressure of the negative pressure provider, so that the far and near end gas to be analyzed flows in to The liquid in the far-end and near-end gas to be analyzed is filtered out; and a liquid ejector is connected to the filter to discharge the liquid stored in the filter.

Preferably, in the above integrated volatile organic substance analysis machine, the machine body is further provided with a sampling module unloading structure, a detection module unloading structure, and a computing module unloading structure. The sampling module unloading structure, the testing module unloading structure, or the computing module unloading structure is operated through the maintenance interface, and the sampling module, the testing module, or the computing module is unloaded to perform maintenance operations on the unloader. .

Preferably, in the above-mentioned integrated volatile organic substance analysis machine, the sampling module or the detection module further has a particulate matter filtering unit, which provides a filtering treatment for the particulate matter for the far and near-end gas to be analyzed. .

Preferably, in the above integrated volatile organic substance analysis machine, the detection module is a GC-FID detector, and the integrated volatile organic substance analysis machine also has a hydrogen channel, and is connected to the detection module. To provide the hydrogen required for the combustion of the detection module; a hydrogen switching valve is provided in the hydrogen channel to control the on-off state of the hydrogen channel; and a monitoring unit monitors the combustion status of the detection module, and When detecting that the combustion state is in a preset warning state, the hydrogen switching valve is caused to close the hydrogen channel.

In summary, the integrated volatile organic substance analysis machine of the present invention integrates a temperature control module, a sampling module, a detection module, and a calculation module into the analysis space of the machine body so as to pass the modularization. Configuration methods, streamline the on-site configuration, and reduce the use of space.

Furthermore, the integrated volatile organic substance analysis machine of the present invention can detect whether there is an abnormality in the sampling module or the detection module by calculating the degree of deviation of the composition or concentration of the gas to be analyzed in the remote and near-end analysis environment. Therefore, the self-checking function of the machine is realized, and when an abnormality is detected in the sampling module, a clean airflow can also be provided to clean the sampling module.

In addition, the present invention uses a negative pressure provider so that the gas to be analyzed at the far end or the near end can flow into the detection and analysis uniformly, thereby improving the accuracy of detection and analysis.

Furthermore, each functional module in the integrated volatile organic substance analysis machine of the present invention can be separately installed or uninstalled for convenience of equipment assembly and maintenance.

1‧‧‧Integrated VOC Analyzer

10‧‧‧Gas sensor

11‧‧‧machine body

111‧‧‧maintenance interface

112‧‧‧Analysis Space

1121‧‧‧Temperature Control Module

1122‧‧‧Sampling module

11221‧‧‧ Particulate matter filter unit

1123‧‧‧Detection Module

11230‧‧‧Sample gas input pipeline

11231a‧‧‧First sample reservoir

11231b‧‧‧Second sample reservoir

11232‧‧‧ Carrier Gas Provider

112321, 112322‧‧‧ Carrier gas flow control valve

11233‧‧‧Negative pressure provider

112331‧‧‧Unloading structure of negative pressure provider

11234a, 11234b ‧‧‧ sample separator

11235‧‧‧sample detector

11236‧‧‧Injection valve

11237‧‧‧Filter

11238‧‧‧Liquid ejector

1124‧‧‧Computing Module

113‧‧‧Clean Gas Provider

115‧‧‧Sampling module unloading structure

116‧‧‧Detection module unloading structure

117‧‧‧Computing Module Unloading Structure

1181‧‧‧ Hydrogen channel

11811‧‧‧Hydrogen control valve

1182‧‧‧Hydrogen on-off valve

1183‧‧‧Monitoring Unit

1184‧‧‧Air channel

11841‧‧‧Air Control Valve

2‧‧‧ Remote Analysis Environment

21‧‧‧monitoring port

3‧‧‧ Proximity Analysis Environment

41‧‧‧Inlet

411‧‧‧Sampling tube

412‧‧‧ Particulate matter filter unit

42‧‧‧ communication port

424‧‧‧drain

425‧‧‧Second exhaust port

43‧‧‧Wall Mount

44‧‧‧Touch display

62, 63‧‧‧ Valve

FIG. 1 is a site configuration diagram showing the integrated volatile organic substance analysis machine of the present invention; FIG. 2 is a block diagram showing the machine body of the integrated volatile organic substance analysis machine of the present invention; FIG. 3 is a diagram showing the present invention; The schematic diagram of the embodiment of the integrated volatile organic substance analysis machine of the invention is in the sample loading state (LOAD); FIG. 4 shows the detection module of the integrated volatile organic substance analysis machine of the invention is in the sample injection A schematic diagram of the state (INJECT); and FIG. 5 to FIG. 10 are structural diagrams showing different embodiments of the integrated volatile organic substance analysis machine of the present invention, respectively.

The following content will be combined with drawings to illustrate the technical content of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The invention can also be implemented or applied by other different specific embodiments. Various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the invention. In particular, the proportional relationships and relative positions of the various elements in the drawings are only exemplary, and do not represent the actual status of the implementation of the present invention.

FIG. 1 is a field configuration diagram showing an integrated volatile organic substance analyzer 1 of the present invention. The integrated volatile organic substance analysis machine 1 of the present invention can load a remote gas to be analyzed in a remote analysis environment 2 through a sampling tube 411 for volatile organic substance analysis, or load a near end An analysis of a near-end gas to be analyzed in the environment 3 is performed for the analysis of volatile organic substances. As shown in the figure, an external sampling tube 411 can be connected to the sample inlet 41 of the machine body 11 of the present invention to connect to a remote monitoring port 21 (such as a chimney or a factory area around the factory for exhaust gas). Environment), receiving the gas collected by the monitoring port 21 through the sampling tube 411, and analyzing the components and content of the volatile organic substances in the collected gas; or the injection port 41 of the machine body 11 of the present invention It is also possible to analyze the composition and content of volatile organic substances in the air of the near-end environment by directly collecting the air of the near-end environment where it is currently located.

In a preferred embodiment, a particulate matter filtering unit 412 is further provided at the front end of the sampling tube 411 for filtering particulate matter for the gas to be analyzed at the remote end.

In addition, during the analysis process, the integrated volatile organic substance analyzer 1 of the present invention also has a gas sensor 10 that can collect environmental parameters such as temperature, pressure, flow rate, and humidity of the remote gas to be analyzed, and Based on this, a remote collection message is generated, and the above-mentioned remote collection message can be transmitted to the communication port 42 provided on the machine body 11 through a signal line, and the machine body 11 can be subsequently used as a reference for gas detection and analysis. The diagram shown in FIG. 1 exemplarily shows that the temperature value of the remote gas to be analyzed can be collected by a thermometer, the pressure value of the remote gas to be analyzed by a pressure gauge, and the remote Analyze the humidity value of the gas, and collect the flow of the remote gas to be analyzed through the flow sensor. However, the collected environmental parameters are not limited to this, but according to the actual environment and analysis requirements, collecting other can cause gas detection and analysis results. Various environmental parameters affected. Furthermore, the gas sensor 10 is connected to the communication port 42 of the machine body 11 through a signal line, so as to transmit the remotely collected information sensed by the gas sensor 10 to the machine body 11.

Please continue to refer to FIG. 1. In this embodiment, wall-mounted fixing bases 43 may be respectively provided around the machine body 11 to fix the machine body 11 on a wall, thereby properly using the use space. A touch screen 44 is also provided on the outside of the box door of the machine body 11 for displaying related output information of the machine body 11 and providing input related operation instructions.

Please refer to FIG. 2, which is a block diagram showing a machine body 11 of the integrated volatile organic substance analysis machine 1 of the present invention. As shown in the figure, the machine body 11 of the present invention is adjacent to the near-end analysis environment 3 but far from the far-end analysis environment 2 (please refer to FIG. 1). A maintenance interface 111 is provided in the machine body 11 and is located on the machine. The main body 11 has an analysis space 112 therein. The analysis space 112 is provided with a temperature control module 1121, a sampling module 1122, a detection module 1123, and a calculation module 1124. The maintenance interface 111 is connected to the analysis space 112. Through the maintenance interface 111, the management personnel can perform maintenance on the temperature control module 1121, the sampling module 1122, the detection module 1123, and the calculation module 1124 in the analysis space 112.

The specific functions of the functional modules in the analysis space 112 will be specifically described below with reference to FIGS. 3 to 10.

As shown in FIG. 5, the temperature control module provides heat to increase the saturated vapor pressure of the sampling module 1122 and the detection module 1123 at the far and near ends of the gas to be analyzed, and allows the sampling module 1122 and the detection module 1123 to increase. The current vapor pressure of the far and near gas to be analyzed is lower than the corresponding saturated vapor pressure, so as to avoid the condensation of the far and near gas to be analyzed in the analysis space, that is, to avoid the far and near gas to be analyzed in the analysis process The medium condenses on the wall of the pipe of the integrated volatile organic substance analyzer 1.

As shown in FIG. 5, the sampling module 1122 can be loaded with a remote gas to be analyzed, and the remote gas to be analyzed can be delivered at a predetermined temperature interval. Alternatively, the sampling module 1122 can also be loaded into the near-end analysis environment 3. The near-end gas to be analyzed is delivered at the predetermined temperature interval. Preferably, a particulate matter filtering unit 11221 (as shown in FIG. 3 or FIG. 4) may be provided on the sampling module 1122 for The gas to be analyzed, which is input to the far and near ends of the machine body 11, is subjected to filtering treatment of granular materials to prevent the internal pipeline of the machine body 11 from being polluted by the granular materials.

As shown in FIG. 10, the detection module 1123 is configured to receive the far and near gas to be analyzed sent by the sampling module 1122, and detect the components of the volatile organic substances of the far and near gas to be analyzed in a predetermined temperature range. Or concentration, and output a far-end detection message or a near-end detection message accordingly.

The operation principle of the detection module 1123 of the present invention will be specifically described below with reference to FIGS. 3 to 9. Among them, FIG. 3 is a schematic diagram showing an embodiment in which the detection module 1123 of the integrated volatile organic substance analyzer of the present invention is in a load state (LOAD); FIG. 4 is a view showing the integrated volatile organic substance analyzer of the present invention Schematic diagram of the station's detection module 1123 in the injection state (INJECT).

In an embodiment, the detection module 1123 further includes a first sample storage 11231a, a carrier gas supplier 11232, a negative pressure supplier 11233, a sample separator 11234, a sample detector 11235, and an injection valve. 11236.

The first sample reservoir 11231a is shown in FIG. 3 or FIG. 4 and is used to store the quantitative far and near end gas to be analyzed. In this embodiment, the first sample storage 11231a is a sample storage pipeline as shown in FIGS. 3 and 4.

In addition, in other preferred embodiments, the detection module 1123 may also have a second sample storage 11231b, as shown in FIG. 3 and FIG. 4, which is also used to store a quantitative quantity of the far and near end gas to be analyzed.

The carrier gas supplier 11232 is shown in FIG. 3, FIG. 4, FIG. 5, or FIG. 7 and is used to provide a carrier gas. In this embodiment, the provided carrier gas is, for example, an inert gas, which does not follow the distance, A chemical reaction occurs in the volatile organic substance of the gas to be analyzed at the near end so as not to affect the detection result of the volatile organic substance in the gas to be analyzed. Furthermore, as shown in FIG. 3, FIG. 4, or FIG. 5, the carrier gas provider 11232 also has two carrier gas flow control valves 112321 and 112322 for controlling the input flow rate of the carrier gas.

The negative pressure provider 11233 is shown in FIG. 3, FIG. 4, FIG. 5, or FIG. 8 and is used to provide a negative pressure. In this embodiment, the negative pressure provider 11233 is, for example, a negative pressure pump, which is used to make the far and near end gas to be analyzed driven by the negative pressure into the relevant detection pipeline of the detection module 1123 for detection (please Details later).

The sample separators 11234a and 11234b are shown in FIG. 3 and FIG. 4. They are used to separate the volatile organic substances in the far-end and near-end gases to be analyzed and output them sequentially. In this embodiment, the sample separators 11234a and 11234b are, for example, a sample separation pipeline as shown in FIGS. 3 and 4.

The sample detector 11235 is shown in FIG. 3, FIG. 4 or FIG. 6, and is used for receiving the volatile organic substances output by the sample separator 11234 in order to detect the volatile organic substances of the gas to be analyzed at the far and near ends. Composition or concentration. In this embodiment, the sample detector 11235 may be, for example, a FID detector or a PID detector, but is not limited thereto.

The injection valve 11236 is shown in FIG. 3, FIG. 4 or FIG. 5, where the injection valve 11236 is, for example, a ten-way valve, which can be switched between the loading state (LOAD) and the injection state (INJECT) to form different Pathway.

Please refer to FIG. 3, when the injection valve 11236 is switched to the sample loading state, the injection valve 11236 is connected to the negative pressure provided by the negative pressure provider 11233, so that the far and near end analysis gas enters the first sample storage 11231a Save. In a preferred embodiment, the far-end and near-end gas systems to be analyzed are stored in the first sample storage 11231a and the second sample storage 11231b, respectively. Specifically, in the sample loading state, the injection valve 11236 is in communication with the negative pressure provider 11233 to receive the negative pressure provided by the negative pressure provider 11233, and the far and near ends of the gas to be analyzed pass through the sample gas input pipe in order. Path 11230 to access the first sample storage 11231a for storage. Preferably, the gas to be analyzed at the far and near ends can further pass through the first sample storage 11231a and enter the second sample storage 11231b for storage, and finally pass through the negative pressure supplier 11233, Through the second exhaust port (ie, the second exhaust port 425 in FIG. 9) or the drain port (ie, the drain port 424 in FIG. 9) of the machine body 11 to the external space of the machine body 11.

Please refer to FIG. 4, when the injection valve 11236 is switched to the injection state, the injection valve 11236 is connected to the carrier gas provided by the carrier gas supplier 11232, so that the first sample storage 11231a (the second sample storage 11231b The stored quantitative far and near ends of the gas to be analyzed enter the sample separator 11234a (sample separator 11234b), and then the volatile organic substances in the far and near ends of the gas to be analyzed are passed through the sample separator 11234a (sample separator 11234b). , And sequentially output to the sample detector 11235 for detection according to the type. Specifically, in the sample loading state, the injection valve 11236 is in communication with the carrier gas provider 11232 to access the carrier gas, and the carrier gas enters the first sample storage 11231a through the carrier gas flow control valve 112321, and is stored in the The far and near gas to be analyzed in the first sample storage 11231a enters the sample separator 11234a through the injection valve 11236 in turn, and then the volatile organic substances in the far and near gas to be analyzed are passed through the sample separator 11234a. The types are sequentially output to the sample detector 11235 for detection. Preferably, in the sample loading state, the injection valve 11236 is also in communication with the carrier gas provider 11232 to access the carrier gas, which enters the second sample reservoir through the carrier gas flow control valve 112322 and through the injection valve 11236. 11231b, and the far-end and near-end gases to be analyzed stored in the second sample storage 11231b enter the sample separator 11234b via the injection valve 11236, and then the volatilization of the far-end and near-end gases to be analyzed is passed through the sample separator 11234b The organic substances are sequentially output to the sample detector 11235 for detection by type. It should be explained that the second sample storage 11231b and the sample separator 11234b may be omitted.

Furthermore, in the sample injection state, the far and near end gas to be analyzed input through the sample gas input pipe 11230 is output by the injection valve 11236 under the negative pressure of the negative pressure provider 11233, and finally through the negative pressure. The provider 11233 is transported to the external space of the machine body 11 through the second air outlet (ie, the second air outlet 425 in FIG. 9) or the water outlet (ie, the water outlet 424 in FIG. 9) of the machine body 11.

Preferably, the detection module 1123 may also be provided with a granular material filtering unit (not shown), so as to provide filtering treatment of the granular material for the far-end and near-end gas to be analyzed.

In another embodiment of the present invention, the detection module 1123 further includes a filter 11237 and a liquid discharger 11238.

The filter 11237 (as shown in FIG. 3 or FIG. 4) is used to receive the negative pressure of the negative pressure provider 11233, so that the gas to be analyzed at the far end and the near end flows in to filter the liquid in the gas to be analyzed at the far end and the near end. except. In a specific embodiment, the filter 11237 is a water-removing filter cup, in which the liquid separated from the far-end and near-end gas to be analyzed will precipitate in the lower layer of the water-removing cup due to the influence of gravity. The gas separated from the gas to be analyzed passes through the dewatering cup.

The liquid ejector 11238 (as shown in FIG. 3, FIG. 4, FIG. 5, or FIG. 8) is a connected filter 11237 for discharging the liquid accumulated in the lower layer of the filter 11237. In a specific embodiment, the liquid ejector 11238 is a peristaltic pump, which can prevent liquid from flowing back and polluting the internal pipeline of the machine body 11.

In addition, in another embodiment of the present invention, the detection module 1123 is, for example, a GC-FID detector, but it is not limited thereto. When the detection module 1123 is a GC-FID detector, the integrated volatile organic substance analysis machine 1 also has a hydrogen channel 1181, a hydrogen on-off valve 1182, and a monitoring unit 1183.

The hydrogen channel 1181 is shown in FIG. 3, FIG. 4, or FIG. 7, and is connected to the detection module 1123 (ie, the GC-FID detector). Specifically, it is connected to the sample detector 11235 of the detection module 1123 to provide Detection module 1123 requires hydrogen (H2) for combustion. As shown in FIG. 3, FIG. 4 or FIG. 5, a hydrogen control valve 11811 is also provided on the hydrogen channel 1181 for controlling the input flow rate of hydrogen. In addition, the integrated volatile organic substance analysis machine 1 air passage is connected to the sample detector 11235 of the detection module 1123 to provide The air (AIR) required for the combustion of the detection module 1123 is similar to that shown in FIG. 3, FIG. 4 or FIG. 5, and an air control valve 11841 is also provided on the air passage 1184 for controlling the input air flow.

The hydrogen on-off valve 1182 is shown in FIG. 3, FIG. 4, or FIG. 5. The hydrogen on-off valve 1182 is disposed on the hydrogen passage 1181 to control the on-off state of the hydrogen passage 1181. In a specific embodiment, a warning threshold (for example, a limit under hydrogen explosion) may be set for the hydrogen on-off valve 1182, and when the detected hydrogen reaches the warning threshold, the hydrogen on-off valve 1182 is automatically closed to the hydrogen channel 1181; or, The hydrogen on-off valve 1182 can automatically close the hydrogen channel 1181 when the GC-FID detector is turned off to ensure safety.

The monitoring unit 1183 is shown in FIG. 7, which is used to monitor the combustion state of the detection module 1123 and cause the hydrogen on-off valve 1182 to close the hydrogen channel 1181 when the detection of the combustion state is in a preset warning state.

The calculation module 1124 is used to calculate the analysis parameters of the volatile organic substances in the gas to be analyzed at the far and near ends according to the remotely collected information and the far and near detection information. Please refer to FIG. 7. In the present invention, the computing module 1124 is disposed on the inner wall of the box door of the machine body 11.

In another embodiment of the present invention, the far-end and near-end gas systems to be analyzed may be, for example, a standard gas or a sample gas, wherein the composition or concentration of the volatile organic substances of the sample gas is unknown. Specified composition or concentration of volatile organic substances. Please refer to FIG. 1, FIG. 3, or FIG. 4, in which the integrated volatile organic substance analysis machine 1 loads the gas to be analyzed in the remote analysis environment 2 from the inlet 41 through the sampling tube 411 Perform volatile organic substance analysis, or the integrated volatile organic substance analysis machine 1 may load the near-end analysis environment 3 of the near-end analysis environment gas for volatile organic substance analysis. The remote and near-end analysis gas system can be a standard gas. The calculation module 1124 also obtains the components or concentrations of the volatile organic substances of the near-end analysis gas based on the near-end detection information, thereby providing automation to the detection module 1123. Ground correction or anomaly detection, the calculation module 1124 also detects information from the far and near ends, The deviation degree of the components or concentrations of the volatile organic substances of the gas to be analyzed at the far end and the near end is obtained, so as to provide automatic abnormality detection for the sampling tube 411 and detect whether the sampling tube 411 is polluted or not.

Preferably, the volatile organic substance detection machine 1 of the present invention further has a clean gas supplier 113 for supplying the sampling tube 411 when a predetermined time arrives or when an abnormality is detected in the sampling tube 411. Positive pressure cleaning airflow to clean it.

Specifically, please refer to FIG. 3 or FIG. 4. When the abnormality of the sampling tube 411 is analyzed, the clean air supplier 113 can provide a positive pressure clean air flow to the cleaning product input port, or the clean air supplier 113 can also The sampling pipe 411 is periodically provided with a positive-pressure cleaning airflow according to a predetermined time to perform a cleaning operation on the sampling pipe 411. Referring to FIG. 3, the clean air supplier 113 can input a clean airflow through the cleaning product input port, and the clean airflow is reversely delivered to the valve 62 through the valve 63 and then blown out through the injection port in the reverse direction through the valve 62 to enter FIG. 1. In the sampling tube 411 shown, the sampling tube 411 can be cleaned, and at the same time, the granular material filtering unit 412 provided on the sampling tube 411 can be cleaned, that is, the granular material is back blown by the cleaning gas. The particulate matter blocked by the filtering unit 412 is blown out in the reverse direction.

Please refer to FIG. 3 or FIG. 4 successively. In other embodiments of the present invention, the machine body 11 is further provided with a first exhaust port, which is used to balance the air pressure in the internal pipeline of the machine body 11. Specifically, the internal piping of the machine body 11 of the present invention is a negative pressure pipe, and the far and near gas systems to be analyzed are input to each of the machine body 11 through the negative pressure provided by the negative pressure provider 11233. In the internal pipeline, of course, since the standard gas system input through, for example, the first, second, and third standard input ports is a positive pressure gas, the first exhaust port connected to the outside can be used as the internal pipe. When a positive pressure standard gas is filled in the road, it is used to adjust the pressure of the internal pipeline to make the pressure of the internal pipeline reach equilibrium.

In another embodiment of the present invention, the machine body 11 is further provided with a sampling module unloading structure 115 (as shown in FIG. 5), a detection module unloading structure 116 (as shown in FIG. 10), and a computing module. Group uninstall structure 117 (as shown in FIG. 7), relevant management personnel can operate the sampling module uninstall structure 115, the detection module uninstall structure 116 or the computing module uninstall structure 117 through the maintenance interface 111, and independently install or uninstall the sampling module 1122, the detection module 1123 or the calculation module 1124, to facilitate personnel to perform assembly or maintenance operations for each functional module inside the machine body 11. It should be noted that the detachable functional modules are not limited to the above, and each functional module inside the machine body 11 of the present invention can be independently detached in principle, for example, the negative pressure provider 11233 (and liquid ejector) 11238) can also be unloaded by the negative pressure provider unloading structure 112331 (and liquid ejector unloading structure) shown in FIG. 8.

Compared with the conventional technology, the integrated volatile organic substance analysis machine of the present invention has the following advantages: First, the present invention integrates various functions such as a temperature control module, a sampling module, a detection module, and a calculation module. The module is integrated in the analysis space in the body of a machine, which can provide streamlined on-site configuration and greatly reduce the use space. It is also beneficial for maintenance personnel to perform unified inspection and maintenance operations on the analysis machine.

Secondly, the present invention can be used to analyze the gas to be analyzed in the near-end or far-end analysis environment, which has a wide range of applications, and can further calculate the degree of deviation of the components or concentrations of the gas to be analyzed in the far-end and near-end analysis environments. According to this, the sampling module or detection module in the machine is analyzed for abnormality, and the machine's self-test function is realized. Furthermore, when there is an abnormality in the sampling module in the analysis machine, the contaminated sampling module can be cleaned by the clean air supplier configured in the machine.

In addition, the present invention uses a negative pressure provider to suck the gas to be analyzed at the distal end or the proximal end into the relevant sampling and detection pipeline in a negative pressure suction manner to ensure the stability of the gas to be analyzed in the pipeline. Thereby, the accuracy of the analysis result of the gas to be analyzed is improved.

Furthermore, the integrated volatile organic substance analysis machine of the present invention is provided with a corresponding unloading structure for each component in the machine body, so that each functional module inside the machine body can be installed or uninstalled separately. In order to facilitate the assembly or maintenance operations for each functional component inside the machine.

The above-mentioned embodiments only exemplify the principles and effects of the present invention, and are not intended to limit the present invention. Anyone skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the rights of the present invention should be as listed in the patent application scope of the present invention.

Claims (10)

An integrated volatile organic substance analysis machine uses a sampling tube to load a remote analysis environment with a remote gas to be analyzed for volatile organic substance analysis or a near-end analysis environment. The near-end gas to be analyzed for the analysis of volatile organic substances. During the analysis, the environmental parameters of the far-end gas to be analyzed can be collected, and a remote collection message can be generated based on the integrated volatile organic substance analysis. The machine includes: a machine body, which is adjacent to the near-end analysis environment but far from the far-end analysis environment, and is provided with a maintenance interface, and has an analysis space inside, the analysis space is provided with a temperature control module, a sampling Module, a detection module and a calculation module, the maintenance interface is connected to the analysis space, and the temperature control module, the sampling module, and the detection module can be maintained in the analysis space through the maintenance interface. And the calculation module; wherein, the sampling module is loaded with the far and near gas to be analyzed; the detection module receives the far and near gas to be analyzed sent by the sampling module To detect the composition or concentration of the volatile organic substance of the far-end and near-end gas to be analyzed, and output a remote detection message or a near-end detection message accordingly; the calculation module is based on the remote acquisition information and the Far-end and near-end detection information to calculate the analysis parameters of the volatile organic substances in the far-end and near-end gases to be analyzed; and the temperature control module provides heat to make the sampling module and the detection module far and near The saturated vapor pressure of the gas to be analyzed at the end is increased, and the current vapor pressure of the gas at the far and near ends of the sampling module and the detection module is made smaller than the saturated vapor pressure at which it belongs. The integrated volatile organic substance analysis machine described in item 1 of the scope of patent application, wherein the far-end and near-end gas to be analyzed is a standard gas or a sample gas. According to the integrated volatile organic substance analysis machine described in item 1 of the scope of patent application, wherein the far-end and near-end analysis gas system is a standard gas, the calculation module also obtains the information based on the near-end detection information. The composition or concentration of the volatile organic substance of the gas to be analyzed at the near end, so as to provide automatic calibration or anomaly detection to the detection module. The calculation module also obtains the far and near based on the far and near detection information. The degree of deviation of the composition or concentration of the volatile organic substances of the gas to be analyzed is provided, so as to provide automatic abnormality detection for the sampling tube. The integrated volatile organic substance analysis machine described in item 3 of the scope of patent application, further includes a clean gas supplier, which provides a positive signal to the sampling tube when it arrives at a predetermined time or when the sampling tube detects an abnormality. Compressed air flow to clean the sampling tube. The integrated volatile organic substance analysis machine described in item 1 of the scope of patent application, wherein the detection module further includes: a first sample storage unit for storing the quantitative far and near ends to be analyzed Gas; a carrier gas provider is used to provide a carrier gas, wherein the carrier gas does not chemically react with the volatile organic substances of the far and near gas to be analyzed; a negative pressure provider is used to Provide negative pressure; a sample separator that separates the volatile organic substances in the far and near gas to be analyzed according to the type and outputs them sequentially; a sample detector that receives the sequentially output of the sample separator Volatile organic substances to detect the composition or concentration of the volatile organic substances of the far and near-end gas to be analyzed; and an injection valve, which is between the load state (LOAD) and the injection state (INJECT) Switching; wherein, when the injection valve is switched to the sample loading state, the injection valve is connected to the negative pressure provided by the negative pressure provider, so that the far and near end analysis gas enters the first sample storage Storage; and when the injection valve is switched In the injection state, the injection valve is connected to the carrier gas provided by the carrier gas supplier, so that the quantitative far and near end gas to be analyzed stored in the first sample storage enters the sample separator, and then passes through The sample separator outputs the volatile organic substances in the far-end and near-end gas to be analyzed to the sample detector in order according to the type for detection. The integrated volatile organic substance analysis machine as described in item 5 of the scope of patent application, wherein the detection module further includes: a second sample storage unit for storing a quantitative quantity of the far and near gas to be analyzed Wherein, when the injection valve is switched to the sample loading state, the injection valve is connected to the negative pressure provided by the negative pressure provider, so that the far and near-end analysis gas enters the second sample storage for storage; And when the injection valve is switched to the injection state, the injection valve is connected to the carrier gas provided by the carrier gas provider, so that the quantitative far and near end gas to be analyzed stored in the second sample reservoir enters the Detection in a sample detector. The integrated volatile organic substance analysis machine described in item 5 of the scope of patent application, wherein the detection module further includes: a filter, which receives the negative pressure of the negative pressure provider, so that the far, near The gas to be analyzed flows in to filter out the liquid in the far and near gas to be analyzed; and a liquid discharger is connected to the filter and discharges the liquid stored in the filter. According to the integrated volatile organic substance analysis machine described in item 1 of the scope of patent application, the machine body is also provided with a sampling module unloading structure, a detection module unloading structure and a computing module unloading structure. The sampling module unloading structure, the testing module unloading structure, or the computing module unloading structure is operated through the maintenance interface, and the sampling module, the testing module, or the computing module is unloaded to perform maintenance operations on the unloader. . The integrated volatile organic substance analysis machine described in item 1 of the scope of patent application, wherein the sampling module or the detection module also has a particulate matter filtering unit, which is provided for the far and near gas to be analyzed Filtration of granular material. The integrated volatile organic substance analysis machine described in item 1 of the scope of patent application, wherein the detection module is a GC-FID detector, and the integrated volatile organic substance analysis machine also has: a hydrogen channel Is connected to the detection module to provide the hydrogen required for the combustion of the detection module; a hydrogen switching valve is provided in the hydrogen channel to control the on-off state of the hydrogen channel; and a monitoring unit is used to monitor the detection The combustion state of the module, and when detecting that the combustion state is in a preset warning state, cause the hydrogen switching valve to close the hydrogen channel.