CN116465694A - Device and method for measuring oil vapor or hydrocarbon in gas - Google Patents

Device and method for measuring oil vapor or hydrocarbon in gas Download PDF

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Publication number
CN116465694A
CN116465694A CN202310475565.4A CN202310475565A CN116465694A CN 116465694 A CN116465694 A CN 116465694A CN 202310475565 A CN202310475565 A CN 202310475565A CN 116465694 A CN116465694 A CN 116465694A
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gas
way valve
oil vapor
measuring
detection
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陈行柱
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Feisi Meter Shenzhen Co ltd
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Feisi Meter Shenzhen Co ltd
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Priority to CN202310475565.4A priority Critical patent/CN116465694A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The application relates to a measuring device and a measuring method for oil vapor or hydrocarbon in gas, wherein the measuring device comprises a detection gas circuit, a sample gas input gas circuit, a filtering gas circuit and a three-way valve; the detection gas circuit is provided with an oil vapor measurement sensor, the sample gas input gas circuit is arranged at the front end of the gas inlet of the detection gas circuit, and the filtering gas circuit is connected with the sample gas input gas circuit in parallel; the two-way valve and the filter are sequentially arranged along the conveying direction of the gas in the filtering gas path, the three-way valve is arranged among the sample gas input gas path, the detecting gas path and the filtering gas path, and the three-way valve is used for selectively conducting the sample gas input gas path and the detecting gas path or the filtering gas path and the detecting gas path; when the two-way valve is conducted, the three-way valve is conducted through the filtering gas path and the detecting gas path; when the two-way valve is closed, the three-way valve is communicated with the sample gas input gas path and the detection gas path. The device has the effects of rapidly cutting off the clean gas for calibration, reducing the reflux of the clean gas, reducing the influence of the clean gas on the oil vapor in the measured gas and improving the precision of the measurement result.

Description

Device and method for measuring oil vapor or hydrocarbon in gas
Technical Field
The present disclosure relates to the field of measurement technologies of oil vapor and hydrocarbon in gas, and in particular, to a measurement device and a measurement method for oil vapor or hydrocarbon in gas.
Background
The content of oil vapor or hydrocarbon in a gas is an important indicator for evaluating the quality of a gas product, and is increasingly being appreciated by consumers. The periodic or uninterrupted detection of gases has become an important element in the production or use of gases.
Currently, oil vapor and hydrocarbons in gases are mainly derived from compressor operation, contamination of the gas containment vessel, or accumulation of hydrocarbons in the feed gas. Typically, the oil vapor and hydrocarbon are distributed throughout the gas in the form of an aerosol of liquid particles or as oil vapor of gaseous macromolecules. In detecting the oil vapor and hydrocarbon content of a gas, sensor technology is often used for detection. During the use process of the sensor, a more accurate detection zero point is needed. However, due to environmental influences, the detection zero point of the sensor may drift: namely, the detection zero position of the sensor is deviated, and the measured value of the sensor is not corresponding to the actual value of the gas content in the pipeline. In order to ensure the accuracy of the position of the detection zero point of the sensor, a filter is generally used to generate clean gas, and the position of the detection zero point of the sensor is calibrated.
For the related art, when the content of the oil vapor and the hydrocarbon in the gas is measured, the measured gas contacts the filter, so that the actual content of the oil vapor and the hydrocarbon in the pipeline is changed, and the accuracy of the measurement result of the subsequent sensor is affected.
Disclosure of Invention
In order to improve the accuracy of the measurement results of the oil vapor and hydrocarbon content in the gas, the application provides a measurement device and a measurement method of the oil vapor or hydrocarbon in the gas.
The application provides a measuring device for measuring oil mist content in gas adopts following technical scheme:
a device for measuring oil vapor or hydrocarbon in a gas, comprising:
the detection gas circuit is provided with an oil vapor measurement sensor, and the oil vapor measurement sensor is used for measuring the content of the sample gas input into the detection gas circuit;
the sample gas input gas circuit is arranged at the front end of the air inlet of the detection gas circuit and is used for conveying sample gas;
the filtering gas circuit is connected with the sample gas input gas circuit in parallel, and a two-way valve and a filter are sequentially arranged along the conveying direction of the gas in the filtering gas circuit;
the three-way valve is arranged between the sample gas input gas channel and the detection gas channel and between the filtering gas channel and the detection gas channel, and is used for selectively conducting the sample gas input gas channel and the detection gas channel or the filtering gas channel and the detection gas channel;
when the two-way valve is conducted, the three-way valve conducts the filtering gas circuit and the detecting gas circuit; when the two-way valve is closed, the three-way valve conducts the sample gas input gas path and the detection gas path.
By adopting the technical scheme, after the gas enters the sample gas input gas circuit, the gas can also enter the filtering gas circuit; for the sample gas input gas circuit, the gas to be measured is conveyed, and the filter gas circuit purifies the gas to be measured into clean gas by utilizing a filter, so that the oil vapor measurement sensor can be directly calibrated by the clean gas after filtration and purification before use, and no new external clean gas is required to be connected. In the measuring process, as the three-way valve has selective conductivity, one air passage in the three-way valve is turned on, and the other air passage is turned off when the other air passage is turned on.
Therefore, in the process of calibrating the oil vapor measuring sensor before use, the two-way valve is conducted, the original gas can be filtered by the filter to be clean, and the clean gas is conveyed into the oil vapor measuring sensor by the three-way valve through the filtering gas path and the detection gas path so as to perform initial measurement of the gas, and the zero point calibration of the oil vapor measuring sensor can be continued according to the test result, so that the accuracy of the subsequent measurement result is improved. And after the whole measuring device is converted from the calibration process to the measurement process, the two-way valve is closed, the three-way valve is communicated with the sample gas input gas channel and the detection gas channel, and the gas to be measured enters the oil vapor measuring sensor for measurement through the sample gas input gas channel.
At the moment, the two ends of the filter are respectively turned off through the two-way valve and the three-way valve, so that clean gas is kept in the filter and a filtering gas path around the filter, the filtered clean gas is prevented from entering the sample gas input gas path, meanwhile, the gas to be measured is prevented from entering the filter, the content of oil vapor in the gas to be measured is prevented from changing as much as possible, the influence of the clean gas on the content of oil in the gas to be measured is reduced, and the measurement accuracy is improved.
Optionally, a proportional valve is further disposed on the detection gas path, and the proportional valve is disposed between the three-way valve and the oil vapor measurement sensor.
By adopting the technical scheme, the pressure balance between the three-way valve and the oil vapor sensor is regulated by the proportional valve, so that the flow rate of gas entering the oil vapor measuring sensor is controlled to be stable, the constant flow rate of the oil vapor measuring sensor when measuring the gas is maintained, and the measuring precision is improved.
Optionally, the two-way valve, the three-way valve and the proportional valve are all electromagnetic valves.
By adopting the technical scheme, the electromagnetic valve has higher controllability, so that the two-way valve, the three-way valve and the proportional valve can be better regulated and controlled when being regulated.
Optionally, the system further comprises a processing module, wherein the processing module is electrically connected with the oil vapor measuring sensor, the two-way valve, the three-way valve and the proportional valve.
Through adopting above-mentioned technical scheme, two-way valve and three-way valve are by processing module to carry out the electric control, can comparatively fast open and close or switch control to realize the quick switch on and the switch of gas circuit, the mixed condition between clean gas and the gas that awaits measuring is reduced to the maximum extent, improve the accuracy of oil vapor measuring sensor's measuring result.
Optionally, the sample gas feeding device further comprises a dryer, wherein the dryer is arranged on the sample gas feeding gas path.
By adopting the technical scheme, the gas to be measured is continuously dried by the drier, so that the influence of water vapor on the oil vapor sensor is reduced, and the measurement accuracy is improved.
Optionally, the device further comprises a box body, wherein the detection gas circuit, the sample gas input gas circuit and the filtering gas circuit are all arranged in the box body.
Through adopting above-mentioned technical scheme, utilize the box to install fixedly detection gas circuit, sample gas input gas circuit and filtration gas circuit, in the use, can play the effect of protection, thereby avoid detecting gas circuit, sample gas input gas circuit and filtration gas circuit between take place the position and rock the phenomenon that causes the gas leakage as far as possible.
The application also discloses a method for measuring the oil vapor or the hydrocarbon in the gas, which adopts the measuring device for the oil vapor or the hydrocarbon in the gas according to any one of the technical schemes, and comprises the following steps:
opening the two-way valve, and switching a conducting gas path of the three-way valve to enable the filtering gas path to be communicated with the detection gas path;
measuring the content of the oil vapor entering the oil vapor measuring sensor through the filtering gas circuit, and calibrating the detection zero point of the oil vapor measuring sensor by using the measured value;
and closing the two-way valve based on the calibrated detection zero point, and switching the conduction gas path of the three-way valve to enable the sample gas input gas path to be communicated with the detection gas path.
By adopting the technical scheme, in use, the filtering gas path is conducted to filter the gas with the measurement into clean gas so as to provide an initial gas environment for the oil vapor measurement sensor; the data result measured by the oil vapor measuring sensor in the initial gas environment is utilized to correct the zero offset of the oil vapor measuring sensor, so that the oil vapor measuring sensor has more accurate measuring capability. After the oil vapor measuring sensor is calibrated by using clean gas, the clean gas can be kept in the zero calibration gas pipe in an isolated way by closing the two-way valve and switching the conduction gas path of the three-way valve, and the clean gas is prevented from entering the sample gas input pipe, so that the influence of the oil content in the gas to be measured can be caused.
Optionally, the specific step of measuring the content of the oil vapor entering the filter through the filtering gas path and calibrating the detection zero point of the oil vapor measuring sensor with the measured value includes:
judging whether the measured numerical value changes or not, if so, continuing to judge; if not, calibrating the detection zero point of the oil vapor measurement sensor with the measured value.
By adopting the technical scheme, the zero point sensor measured value changes due to the gas inlet, so that when clean gas is introduced, whether the introduced gas is all clean gas is determined by continuously judging whether the value of the oil vapor measuring sensor changes or not, and the oil vapor measuring sensor can be calibrated according to the measurement result.
In summary, the present application includes at least one of the following beneficial technical effects:
1. after the oil vapor measuring sensor is calibrated by the clean gas, the gas path where the clean gas is positioned can be rapidly cut off, the clean gas is isolated, and inaccurate measuring results caused by mixing the clean gas in the sample gas input gas path are avoided as much as possible;
2. the flow rate before the gas is conveyed to the zero point sensor is constant, and the measurement accuracy is improved;
3. the measurement result can be intuitively known, and the control is convenient.
Drawings
Fig. 1 is a schematic gas circuit diagram of a device for measuring oil vapor or hydrocarbon in a gas according to embodiment 1 of the present application.
Fig. 2 is a system schematic diagram of a device for measuring oil vapor or hydrocarbon in a gas according to embodiment 1 of the present application.
Fig. 3 is a schematic flow chart of a method for measuring oil content in a gas in example 1 of the present application.
Reference numerals illustrate: 1. detecting an air path; 11. an oil vapor measurement sensor; 2. sample gas is input into the gas circuit; 3. filtering the air path; 31. a two-way valve; 32. a filter; 4. a three-way valve; 5. a proportional valve; 6. a processing module; 7. a dryer; 8. a box body.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
Example 1
The embodiment of the application discloses a measuring device for oil vapor or hydrocarbon in gas. Referring to fig. 1 and 2, the measuring device for oil vapor or hydrocarbon in gas comprises a detection gas path 1, a sample gas input gas path 2, a filtering gas path 3 and a three-way valve 4. The sample gas input gas circuit 2 and the filtering gas circuit 3 are connected in parallel, and the sample gas input gas circuit 2 is arranged at the front end of the gas inlet of the detection gas circuit 1 so as to convey the gas to be measured. The three-way valve 4 is arranged between the sample gas input gas channel 2 and the detection gas channel 1 and between the filtering gas channel 3 and the detection gas channel 1 so as to selectively conduct the sample gas input gas channel 2 or the filtering gas channel 3. A two-way valve 31 and a filter 32 are sequentially arranged along the conveying direction of the gas in the filtering gas path 3, and the filter 32 purifies the gas to be measured.
When the two-way valve 31 is conducted, the three-way valve 4 conducts the filtering gas path 3 and the detecting gas path 1, so that gas can be filtered conveniently, and then the gas is input into the oil vapor measuring sensor 11 for calibration of a detecting zero point. When the two-way valve 31 is closed, the three-way valve 4 conducts the sample gas input gas channel 2 and the detection gas channel 1, and at the moment, the two-way valve 31 is in a closed state, and the clean gas is blocked in the filtering gas channel 3 while the clean gas is blocked, so that the problem that the content of the gas to be measured is inaccurate due to the fact that the clean gas enters the sample gas input gas channel 2 or the gas to be measured enters the filtering gas channel 3 is avoided as much as possible.
The detection gas circuit 1 is also provided with a proportional valve 5, and the proportional valve 5 is arranged between the three-way valve 4 and the oil vapor measuring sensor 11. The gas delivered from the three-way valve 4 can keep the flow constant when entering the oil vapor measuring sensor 11 under the control of the proportional valve 5, and the measurement accuracy of the oil vapor measuring sensor 11 is improved. In this example, the two-way valve 31, the three-way valve 4 and the proportional valve 5 are all solenoid valves.
The measuring device further comprises a processing module 6. The processing module 6 is electrically connected to the oil vapor measuring sensor 11, the two-way valve 31, the three-way valve 4 and the proportional valve 5. The data measured by the oil vapor measuring sensor 11 are transmitted to the processing module 6 for analysis and processing. The processing module 6 controls the opening and closing of the two-way valve 31 and the output switching of the three-way valve 4 respectively. In this embodiment, the processing module 6 is a micro-process controller system.
And a dryer 7 is further arranged on the sample gas input gas path, and the dryer 7 filters water vapor of the gas to be detected. The measuring device further comprises a box body 8, and the detection air circuit 1, the sample air input air circuit 2 and the filtering air circuit 3 are all arranged in the box body 8. The mounting and fixing are performed by using the case 8.
When the two-way valve 31 is conducted, the processing module 6 controls the three-way valve 4 to conduct the filtering gas circuit 3 and the detecting gas circuit 1. Because the sample gas input gas circuit 2 and the detection gas circuit 1 are in an off state at this time, when the gas to be measured enters the sample gas input gas circuit 2, the gas is blocked by the three-way valve 4 and cannot enter the oil vapor measurement sensor 11. But the gas to be measured is filtered into clean gas after passing through the filtering gas path 3 and the filter 32, and enters the oil vapor measuring sensor 11 through the three-way valve 4. At this time, the value of the oil content in the clean gas is measured, and the detection zero point of the oil vapor measurement sensor 11 is calibrated by the value.
When the two-way valve 31 is closed, the processing module 6 controls the three-way valve 4 to conduct the sample gas input gas path 2 and the detection gas path 1. At this time, the filtering gas path 3 and the detecting gas path 1 are in an off state. The gas to be measured in the sample gas input gas circuit 2 enters the oil vapor measuring sensor 11 for measurement after passing through the three-way valve 4. The clean gas filtered by the filter 32 is blocked by the three-way valve 4, and the clean gas is kept in the filter 32 and the surrounding filtering gas paths 3 by utilizing the closing action of the two-way valve 31 and the three-way valve 4, so that the clean gas cannot diffuse into the sample gas input gas path 2, and the influence of the clean gas on the gas to be measured can be reduced.
The implementation principle of the embodiment of the application is as follows: the three-way valve 4 is utilized to rapidly cut off clean gas in the filtering gas path 3, and the clean gas is kept in the filter 32 and the filtering gas path 3 under the combined action of the three-way valve 4 and the two-way valve 31, so that the problem that the measurement result of the oil vapor measurement sensor 11 is inaccurate due to the fact that the clean gas can flow back into the sample gas input gas path 2 is solved.
Example 2
The embodiment of the application also discloses a method for measuring the oil vapor or hydrocarbon in the gas. Referring to fig. 3, the method for measuring oil vapor or hydrocarbon in gas employs the apparatus for measuring oil vapor or hydrocarbon in gas described in the above embodiment, the method comprising:
s1, opening the two-way valve 31, and switching the conduction gas path of the three-way valve 4 so as to enable the filtering gas path 3 to be communicated with the detection gas path 1.
Before the gas to be measured is measured, the clean gas is used to calibrate the oil vapor measuring sensor 11, so that the deviation of the measurement result is reduced.
S2, measuring the content of the oil vapor entering the oil vapor measuring sensor 11 through the filtering gas circuit 3, and calibrating the detection zero point of the oil vapor measuring sensor 11 by using the measured value.
The clean gas delivered from the filtering gas path 3 gradually empties the oil in the gas before the oil vapor measuring sensor 11 until the oil vapor measuring sensor 11 is completely in the clean gas environment. The oil vapor measurement sensor 11 is used as an initial environment in a clean gas environment, and the detection zero point position of the oil vapor measurement sensor 11 is calibrated by the measured value.
In step S2, step S21 is included: judging whether the measured numerical value changes or not, if so, continuing to judge; if not, calibrating the detection zero point of the oil vapor measurement sensor with the measured value.
Wherein, for the data acquired by the processing module 6, when the clean gas is completely filled around the oil vapor measuring sensor 11 and is introduced for a period of time, the measured value of the oil vapor measuring sensor 11 is not changed any more. The value measured by the oil vapor measuring sensor 11 at this time is the offset value of the detection zero point in the clean environment. The offset of the detection zero point is compensated by the measured value, and the detection zero point of the oil vapor measurement sensor 11 is corrected.
And S3, closing the two-way valve based on the calibrated detection zero point, and switching the conduction gas path of the three-way valve so as to enable the sample gas input gas path to be communicated with the detection gas path.
When the calibration of the detection zero point of the oil vapor measurement sensor is completed, the gas to be measured is introduced at the moment, so that errors caused by the oil vapor measurement sensor can be avoided as much as possible. In addition, in the process that the measuring device is converted into the measuring process from the calibrating process, the two ends of the filter are respectively and rapidly turned off through the two-way valve and the three-way valve, so that clean gas is kept in the filter and a filtering gas path around the filter, the filtered clean gas is prevented from entering the sample gas input gas path, meanwhile, the gas to be measured is prevented from entering the filter, and the influence of the clean gas on the oil content in the gas to be measured is avoided as much as possible.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A device for measuring oil vapor or hydrocarbon in a gas, comprising:
the device comprises a detection gas circuit (1), wherein the detection gas circuit (1) is provided with an oil vapor measurement sensor (11), and the oil vapor measurement sensor (11) is used for measuring the content of a sample gas input into the detection gas circuit (1);
the sample gas input gas circuit (2), the sample gas input gas circuit (2) is arranged at the air inlet front end of the detection gas circuit (1), and the sample gas input gas circuit (2) is used for conveying sample gas;
the filtering gas circuit (3), the filtering gas circuit (3) is connected in parallel with the sample gas input gas circuit (2), and a double-pass valve (31) and a filter (32) are sequentially arranged along the conveying direction of the gas in the filtering gas circuit (3);
the three-way valve (4) is arranged between the sample gas input gas channel (2) and the detection gas channel (1) and between the filtering gas channel (3) and the detection gas channel (1), and the three-way valve (4) is used for selectively conducting the sample gas input gas channel (2) and the detection gas channel (1) or the filtering gas channel (3) and the detection gas channel (1);
when the two-way valve (31) is conducted, the three-way valve (4) conducts the filtering gas circuit (3) and the detecting gas circuit (1); when the two-way valve (31) is closed, the three-way valve (4) conducts the sample gas input gas circuit (2) and the detection gas circuit (1).
2. The device for measuring oil vapor or hydrocarbon in gas according to claim 1, wherein: the detection gas circuit (1) is also provided with a proportional valve (5), and the proportional valve (5) is arranged between the three-way valve (4) and the oil vapor measuring sensor (11).
3. A device for measuring oil vapour or hydrocarbons in a gas according to claim 2, wherein: the two-way valve (31), the three-way valve (4) and the proportional valve (5) are all electromagnetic valves.
4. A device for measuring oil vapour or hydrocarbons in a gas according to claim 3, wherein: the oil vapor measuring device further comprises a processing module (6), wherein the processing module (6) is electrically connected with the oil vapor measuring sensor (11), the two-way valve (31), the three-way valve (4) and the proportional valve (5).
5. The device for measuring oil vapor or hydrocarbon in gas according to claim 1, wherein: the device also comprises a dryer (7), wherein the dryer (7) is arranged on the sample gas input gas circuit (2).
6. The device for measuring oil vapor or hydrocarbon in gas according to claim 1, wherein: still include box (8), detect gas circuit (1) sample gas input gas circuit (2) with filter gas circuit (3) all set up in box (8).
7. A method for measuring oil vapor or hydrocarbon in gas, characterized in that the measuring device for oil vapor or hydrocarbon in gas according to any one of claims 1 to 6 is used, the measuring method comprising:
opening the double-pass valve (31), and switching the conduction gas path of the three-way valve (4) so as to enable the filtering gas path (3) to be communicated with the detection gas path (1);
measuring the content of the oil vapor entering the oil vapor measuring sensor (11) through the filtering gas circuit (3), and calibrating the detection zero point of the oil vapor measuring sensor (11) by using the measured value;
based on the calibrated detection zero point, the two-way valve (31) is closed, and the conduction gas path of the three-way valve (4) is switched so that the sample gas input gas path (2) is communicated with the detection gas path (1).
8. Method for measuring the oil vapour or hydrocarbon in a gas according to claim 7, characterized in that the specific step of measuring the oil vapour content entering the filter (32) through the filtering circuit (3) and calibrating the detection zero of the oil vapour measuring sensor (11) with the measured value comprises:
judging whether the measured numerical value changes or not, if so, continuing to judge; if not, the detection zero point of the oil vapor measuring sensor (11) is calibrated by the measured value.
CN202310475565.4A 2023-04-26 2023-04-26 Device and method for measuring oil vapor or hydrocarbon in gas Pending CN116465694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310475565.4A CN116465694A (en) 2023-04-26 2023-04-26 Device and method for measuring oil vapor or hydrocarbon in gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310475565.4A CN116465694A (en) 2023-04-26 2023-04-26 Device and method for measuring oil vapor or hydrocarbon in gas

Publications (1)

Publication Number Publication Date
CN116465694A true CN116465694A (en) 2023-07-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310475565.4A Pending CN116465694A (en) 2023-04-26 2023-04-26 Device and method for measuring oil vapor or hydrocarbon in gas

Country Status (1)

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CN (1) CN116465694A (en)

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