CN117347610A - Detection gas circuit system and expiration sampling detection equipment - Google Patents
Detection gas circuit system and expiration sampling detection equipment Download PDFInfo
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- CN117347610A CN117347610A CN202311647571.XA CN202311647571A CN117347610A CN 117347610 A CN117347610 A CN 117347610A CN 202311647571 A CN202311647571 A CN 202311647571A CN 117347610 A CN117347610 A CN 117347610A
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- 238000010926 purge Methods 0.000 claims description 17
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- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
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Classifications
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- 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
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B2010/0083—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements for taking gas samples
- A61B2010/0087—Breath samples
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Medical Informatics (AREA)
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- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a detection gas circuit system and an expiration sampling detection device, and relates to the technical field of clinical diagnosis. The detection gas circuit system comprises a detection gas circuit module, a gas monitoring module and an exhaust gas circuit module, wherein the detection gas circuit module can collect and detect gas to be detected; the gas monitoring module is connected with the detection gas circuit module and can acquire first parameter information of the gas in the detection gas circuit module; the exhaust gas path module is connected with the detection gas path module and can at least exhaust the part of the gas to be detected, wherein the first parameter information of the part does not accord with the detection standard. The device can directly collect and detect the expiration of the human body, can directly remove the interference gas, does not need the operation of pouring the gas, and can effectively improve the detection efficiency.
Description
Technical Field
The invention relates to the field of clinical diagnosis, in particular to a detection gas circuit system and an expiration sampling detection device.
Background
Currently, the pre-collected alveolar gas and background gas can be detected by using an exhalation diagnostic instrument clinically so as to realize the measurement of the service life of the red blood cells. However, in the actual use process, the air bag needs to be used for collecting the alveolar gas in the expired air in advance, so that the interference gas in the expired air, such as the cavity gas, the water vapor, the carbon dioxide and the like, is removed, and the detection efficiency is low due to the pre-collection and air pouring treatment mode.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provide a detection gas path system, which can directly collect and detect the expired air of a human body, can directly remove the interference gas, does not need the pre-collection or the air pouring operation, and can effectively improve the detection efficiency;
in addition, an expiration sampling detection device applying the detection gas circuit system is provided.
The invention provides the following technical scheme:
according to a first aspect of the disclosure, there is provided a detection gas circuit system comprising:
the detection gas circuit module can collect and detect gas to be detected;
the gas monitoring module is connected with the detection gas circuit module and can acquire first parameter information of each part of the gas to be detected, which is acquired by the detection gas circuit module;
the exhaust gas path module is connected with the gas channel and can at least exhaust the part of the gas to be detected, which does not accord with the detection standard, of the first parameter information.
Further, the detection gas circuit module includes:
the collecting pipeline is provided with an air inlet end;
the first filter piece, first filter piece with gather the pipeline connection, first filter piece can the filtering flow through gather the interference gas in the gaseous gas of pipeline.
Further, the first parameter information is CO 2 A concentration value; wherein the gas monitoring module comprises:
the first detection part is arranged on the acquisition pipeline and is used for detecting CO of the gas to be detected 2 Concentration values.
Further, the first detecting piece comprises a carbon dioxide concentration detector, and the carbon dioxide concentration detector is connected with the collecting pipeline.
Further, the exhaust gas path module includes:
the first pumping and exhausting piece is connected with the collecting pipeline through a pipe, and the first pumping and exhausting piece can suck gas in the collecting pipeline.
Further, the detection gas circuit system further comprises a second detection module, and the second detection module comprises:
the detection pipeline is communicated with the acquisition pipeline;
the second detection piece and the third detection piece are sequentially arranged along the extending direction of the detection pipeline; the second detection piece can detect the air pressure and/or the flow of the air to be detected in the part of the detection pipeline positioned at the downstream of the third detection piece, and the third detection piece is used for detecting the CO concentration value of the air in the part of the detection pipeline positioned at the downstream of the third detection piece;
the adjusting piece is arranged on the detecting pipeline or the collecting pipeline, the adjusting piece is positioned on the upstream of the second detecting piece and the third detecting piece, and the adjusting piece can adjust the air pressure and/or the flow of the gas to be detected in the part of the detecting pipeline positioned on the downstream of the adjusting piece.
Further, the second detection piece comprises a gas pressure sensor and/or a flow sensor, and the gas pressure sensor and/or the flow sensor are/is arranged on the detection pipeline;
and/or, the third detection piece comprises a carbon monoxide concentration sensor, and the carbon monoxide concentration sensor is arranged on the detection pipeline;
and/or the adjusting piece comprises an adjusting valve, and the adjusting valve is arranged on the detection pipeline or the acquisition pipeline.
Further, the detection gas circuit system further comprises a cleaning gas circuit module, and the cleaning gas circuit module comprises:
the cleaning pipeline is communicated with the detection pipeline through the first reversing piece, and the joint of the cleaning pipeline and the detection pipeline is positioned at the upstream of the second detection piece; the first reversing element is configured to switch at least between a detection line connecting the collection line and a detection line connecting the cleaning line;
and the second filter piece is arranged on the cleaning pipeline and can filter out interference gas in gas flowing through the cleaning pipeline.
Further, the first filter piece comprises a first dryer and a first filter, and the first dryer and the second filter are sequentially installed on the detection pipeline;
and/or the second filter element comprises a second dryer, a second filter and a catalyst, and the second dryer, the second filter and the catalyst are sequentially arranged on the cleaning pipeline;
and/or, the first reversing piece comprises a reversing valve, and the cleaning pipeline is communicated with the detection pipeline through the reversing valve.
Further, the detection gas circuit system further comprises a control module, and the control module is respectively and electrically connected with the detection gas circuit module, the gas monitoring module and the exhaust gas circuit module.
According to a second aspect of the present disclosure, there is provided an breath sampling detection apparatus comprising any of the detection gas circuit systems.
Embodiments of the present invention have the following advantages:
by adopting the detection gas circuit system, the gas to be detected is collected by the detection gas circuit module, the gas to be detected collected by the detection gas circuit module is detected by the gas monitoring module, so that first parameter information is obtained, and if the first parameter information does not accord with the detection standard, the exhaust gas circuit module can be started to exhaust the part of the gas to be detected which does not accord with the detection standard. That is, the first parameter information of the gas to be detected is detected in real time in the process that the detection gas circuit module collects the gas to be detected, and as the first half section of the expiration of the human body is provided with the channel gas which does not participate in the physiological reaction and remains in the channel of the human body, the first parameter information of the gas to be detected can be detected and compared with the detection standard, if the first parameter information does not accord with the detection standard, the current gas to be detected is judged to be the channel gas, so that the channel gas can be discharged out of the detection gas circuit module through the exhaust gas circuit module; when the first parameter information of the current gas to be detected accords with the detection standard, the current gas to be detected can be reserved in the detection gas module. Therefore, the collected gas to be detected is detected in real time, and the interference gas of the cavity gas can be separated from the gas to be detected, so that the direct collection and the detection of the expiration of a human body are realized, and the influence of the interference gas of the cavity gas on a detection result can be reduced. And in the process of collecting air intake, the filter element arranged in the pipeline can directly dry the air or remove the interference air, the air pouring operation is not needed, and the detection efficiency can be effectively improved.
In addition, the invention also relates to an expiration sampling detection device, and because the detection gas circuit system has the technical effects, the expiration sampling detection device comprising the detection gas circuit system has the same technical effects, and the details are not repeated here.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a first embodiment of a detection gas circuit system;
FIG. 2 shows a schematic diagram of a second embodiment of a detection gas circuit system;
fig. 3 shows a schematic structural diagram of a third embodiment of a detection gas circuit system.
Description of main reference numerals:
100-detecting a gas circuit module; 110-collecting pipelines; 111-a first air inlet end; 112-a second air inlet end; 120-monitoring the sensor; 130-a second reversing element; 140-a first filter; 141-a first dryer; 142-a first filter; 143-a first humidity sensor; 150-detecting a pipeline; 160-an adjusting member; 170-a second detection member; 180-a third detection member; 190-a second pumping element; 200-a gas monitoring module; 210-a first detection member; 300-an exhaust gas path module; 310-an exhaust line; 320-a first pumping element; 400-cleaning the gas circuit module; 410-a first reversing element; 420-a second filter; 421-a second humidity sensor; 422-a second filter; 423-a catalyst; 424-a second dryer; 430-cleaning the tubing.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the related art, a particular and important role of the mammalian hematopoietic system is to produce erythrocytes, which deliver oxygen to various tissues of the animal body. The red blood cell life is measured as an important basic physiological index of human body, and under certain conditions, specific values of the red blood cell life are indispensable to diagnosis of diseases, determination of treatment schemes, observation of curative effects and safety evaluation of treatment measures, prognosis judgment of disease progression and the like. The study proves that the difference between the CO concentration of the expired alveolar gas and the CO concentration in the air (environmental gas) of the place where the subject is located before the expired gas is collected can be accurately measured, and the life of the human red blood cells can be calculated. In measuring the CO concentration of alveolar gas exhaled by a subject and the CO concentration in air (ambient gas) at the site where the subject is located, the airway system of the measurement system is typically purged by using treated ambient air (i.e., purge gas).
The life of the red blood cells can be measured clinically by using an expiration diagnostic instrument, namely, the CO concentration of the expired alveolar gas can be measured, for example, the method disclosed in China patent: CN207318498U, which discloses a red blood cell life measuring device with a cleaning gas monitoring function, can detect pre-collected alveolar gas and background gas, and prepare a cleaning gas. However, the system and the structure are complex, and the interference gas is required to be removed through the air pouring bag for multiple times, so that the overall detection efficiency is low.
As shown in fig. 1, in order to solve the above technical problems, according to a first aspect of the present disclosure, a detection gas path system is provided, the detection gas path system includes a detection gas path module 100, a gas monitoring module 200, and an exhaust gas path module 300, where the detection gas path module 100 is capable of collecting and detecting a gas to be detected; the gas monitoring module 200 is connected with the detection gas circuit module 100, and the gas monitoring module 200 can acquire first parameter information of each part of the gas to be detected, which is acquired by the detection gas circuit module 100; the exhaust gas path module 300 is connected with the detection gas path module 100, and the exhaust gas path module 300 can at least exhaust the part of the gas to be detected, of which the first parameter information does not meet the detection standard.
That is, the gas to be detected, which may be the expired air directly expired by the human body or the expired air previously collected through the air bag, may be directly collected through the detection gas path module 100. It should be noted that, to ensure accuracy of the detection result, the detection gas circuit module 100 may also collect the bottom gas, where the bottom gas is the collected environmental gas where the collector is located, for example, when detecting the concentration of CO in expired air, according to the concentration of CO in the environmental gas and the concentration of CO in the alveolar gas, and obtain the endogenous concentration of CO in the alveolar gas by adopting a level difference-concentration difference fitting method; and correcting the concentration of CO in the alveolar gas (including absorption correction and dilution correction) by adopting the concentration of CO in the alveolar gas, so as to obtain an accurate value of the concentration of CO in the alveolar gas, and further calculate the service life of the red blood cells. Of course, when detecting some indicators in expiration, if the ambient air has no influence on the indicators, the ambient air does not need to be collected, and the method can be specifically set according to actual conditions.
Obviously, the gas to be detected is continuously collected by the detection gas circuit module 100, and is not instantaneously completed, so that all parts of the gas to be detected can be detected in real time by the gas monitoring module 200; it should be noted that the gas to be detected is divided into a plurality of portions according to the time sequence difference, that is, the time when each portion enters the detection gas circuit module 100 is different, so, as a result of the gas monitoring module 200, if the first parameter information of the portion of the gas to be detected that first enters the detection gas circuit module 100 does not meet the detection standard, the exhaust gas circuit module 300 is started to exhaust the portion. It is easy to understand that when the human body exhales, the cavity gas is positioned at the front section of the exhales, and the rear section of the exhales is the alveolus gas meeting the detection standard after the cavity gas is exhausted.
In order to ensure the detection accuracy of the detection gas circuit module 100, the tightness of the detection gas circuit module 100 needs to be maintained, and when the exhaust gas circuit module 300 is in a non-working state, the detection gas circuit module 100 is in a sealing state, so that leakage of the gas to be detected and entry of external gas can be avoided.
By applying the detection gas circuit system provided by the invention, the detection gas circuit module 100 is utilized to collect the gas to be detected, the gas to be detected collected by the detection gas circuit module 100 is detected by the gas monitoring module 200 so as to obtain the first parameter information, and if the first parameter information does not meet the detection standard, the exhaust gas circuit module 300 can be started to exhaust the part of the gas to be detected which does not meet the detection standard. That is, in the process of collecting the gas to be detected by the detection gas circuit module 100, the first parameter information of the gas to be detected is detected in real time, and since the first half section of the expired air of the human body has the channel gas which does not participate in the physiological reaction and remains in the channel of the human body, that is, the interference gas, the first parameter information of the gas to be detected can be detected and compared with the detection standard, if the first parameter information does not meet the detection standard, the current gas to be detected is determined to be the channel gas, so that the channel gas can be discharged out of the detection gas circuit module 100 through the exhaust gas circuit module 300; when the first parameter information of the current gas to be detected accords with the detection standard, the current gas to be detected can be reserved in the detection gas module. Therefore, the collected gas to be detected is detected in real time, and the interference gas can be separated from the gas to be detected, so that the direct collection and the detection of the expiration of a human body are realized, the influence of the interference gas on the detection result can be reduced, the gas pouring operation is not needed, and the detection efficiency can be effectively improved.
It should be noted that, the detection gas circuit module 100 may also collect the pre-collected expired air and/or background air. For example, the expired air can be collected in advance through an alveolar air bag, and the specific collection process is as follows: 1) Holding the alveolar air bag, enabling the air blowing nozzle end to be close to the chest, then deeply sucking one breath, and holding the breath for 10-20 seconds; 2) After 10-20 seconds, the cavity channel gas in the front section is exhaled firstly, then the air is blown through a blowing nozzle, and the gas in the cavity is exhaled as much as possible; 3) If the alveolar air bag is not fully inflated at one time (the hand air bag is not recessed more than 1 cm and is fully inflated), the alveolar air bag is manually pressed to empty the air, and the steps 1 and 2 are repeated until the alveolar air bag is fully inflated at one time; 4) After the alveolar air bag is full, the alveolar air bag is pulled out and covered with a cover, and the alveolar air is collected.
Obviously, in the process of collecting and exhaling through the alveolar air bag, the cavity gas exhausted by different people is collected in the air bag with the same volume, namely whether the cavity gas exhausted in exhaling is exhausted or not can not be accurately controlled, and the detection result is easily influenced. And through the volume that this application direct collection personnel's exhale can accurate control pump drainage chamber way gas, reduce the influence of chamber way gas to testing result.
On the basis of the above embodiment, the detection gas circuit module 100 includes a collecting pipe 110 and a first filter 140, where the collecting pipe 110 has a gas inlet end; the first filter 140 is connected to the detection line 150, and the first filter 140 is capable of filtering out the interference gas in the gas flowing through the collection line 110.
If the air inlet end is connected with an alveolar air bag, the pre-collected alveolar air can be collected; if the air inlet end is connected with the nasal cavity or the oral cavity of the collector, the alveolar air of the collector can be directly collected; if the air inlet end is directly communicated with the external environment, the ambient air (namely background air) where the collection personnel are located can be directly collected. Specifically, the air inlet end may be provided with a switching structure to be capable of connecting with alveolar air or the nasal cavity or oral cavity of the collector, and the switching structure may be an air tap to be capable of connecting with the nasal cavity or oral cavity of the collector; the adapting structure can be a pipe joint which is connected with the air tap of the alveolar air bag.
In addition, the first filter 140 can further remove the interference gas, so as to improve the accuracy of the detection result; for example, the interfering gas includes at least one of steam, carbon dioxide, nitric oxide, sulfur oxide, methane, ammonia, hydrogen sulfide, ethanol, ethane. Based on this, how to remove the corresponding disturbing gas is a routine arrangement for a person skilled in the art, and is not described here in detail.
On the basis of the embodiment, the first parameter information is CO 2 A concentration value; the gas monitoring module 200 includes a first detecting member 210, the first detecting member 210 is mounted on the collecting pipeline 110, and the first detecting member 210 is used for detecting CO of a gas to be detected 2 Concentration values.
In general, since the channel gas does not participate in physiological reaction and stays only in the channel of human body, CO of the channel gas 2 Concentration value of CO compared to alveolar gas 2 If the concentration value is lower, the CO can be set according to the setting 2 If the concentration value is detected as standard, the expired CO 2 The concentration value is smaller than the detection standard, namely the cavity channel gas; CO of alveolar gas of general human body 2 The normal concentration is 35-45 mmHg, or the detection standard is 35-45 mmHg, when the CO of the expired air is detected 2 When the concentration value is 35-45 mmHg, the current expiration is judged to be alveolar gas.
Obviously, the first parameter information may be set as other indicators, for example, the oxygen concentration, etc., and the first detecting element 210 may be set as an oxygen concentration meter accordingly; the specific judging method comprises the following steps: if the oxygen concentration of the alveolar gas is high and the oxygen concentration of the alveolar gas is low, the detection standard is set to be the normal concentration of the oxygen of the alveolar gas, and if the partial oxygen concentration of the current exhalation is higher than the detection standard, the partial oxygen concentration is determined to be the alveolar gas.
It should be noted that, because the collected gas to be detected flows through the collecting pipeline 110 in sequence, when the current part of the gas to be detected does not meet the detection standard, the gas can be directly discharged through the exhaust gas circuit module 300, so that the residue in the collecting pipeline 110 can be avoided, and the accuracy of the detection result is improved. Optionally, the exhaust gas path module 300 is disposed downstream of the gas monitoring module 200, and can exhaust the chamber gas more thoroughly by using a first-check-then-exhaust method.
On the basis of the above embodiment, the first detecting member 210 includes a carbon dioxide concentration detector, and the carbon dioxide concentration detector is connected to the collecting pipe 110.
Alternatively, the first detecting member 210 may be a carbon dioxide concentration detector. During installation, the probe of the carbon dioxide concentration detector can be connected or extend into the acquisition pipeline 110, so that the CO of the gas flowing through the acquisition pipeline 110 can be detected in real time 2 Concentration values.
On the basis of the above embodiment, the exhaust gas circuit module 300 includes an exhaust pipe 310 and a first pumping unit 320, where the exhaust pipe 310 is communicated with the collection pipe 110, the first pumping unit 320 is connected with the collection pipe 110 in a pipe manner, and the first pumping unit 320 can drive the gas in the collection pipe 110 to flow toward the exhaust pipe 310.
The exhaust pipe 310 has an exhaust end, and when specifically arranged, the exhaust end can be directly communicated with the atmosphere or the gas collecting container; obviously, the bacteria transmission carried by the cavity gas can be avoided through the gas collecting container, and the device is more sanitary.
Optionally, the first pumping unit 320 may be a pump unit, so as to pump the gas in the collection pipeline 110 through the pump unit; in addition, to ensure sealability, an on-off valve may be provided at the exhaust duct 310 to be able to close the exhaust duct 310 in the non-operating state of the first pumping unit 320. Alternatively, the pump set may be a pump with a flow interruption function, and is not particularly limited herein. For example, an on-off valve may be installed at both ends of the first pumping unit 320.
On the basis of the above embodiment, the detection gas circuit system further includes a second detection module, where the second detection module includes a detection pipeline 150, a second detection member 170, a third detection member 180, and an adjustment member 160, and the detection pipeline 150 is communicated with the collection pipeline 110; the second detecting piece 170 and the third detecting piece 180 are sequentially disposed along the extending direction of the detecting pipe 150; wherein the second detecting member 170 is capable of detecting the gas pressure and/or flow rate of the gas to be detected in a portion of the detecting line downstream of the third detecting member 180, the third detecting member 180 being configured to detect the CO concentration value of the gas in a portion of the detecting line downstream of the third detecting member 180; the adjusting member 160 is installed on the detecting pipeline 150 or the collecting pipeline 110, and the adjusting member is located at the upstream of the second detecting member 170 and the third detecting member 180, the adjusting member 160 can adjust the air pressure and/or the air flow of the air entering the detecting pipeline 150 located at the downstream of the adjusting member 160, and adjust the air inlet flow, so that the exhaled air can be sufficiently filtered and the air blowing comfort of the air blowing person can be improved when passing through the filtering member.
The detection pipeline 150 can collect the gas to be detected, i.e. alveolar gas, which is remained in the collection pipeline 110 and meets the detection standard, and monitor the pressure value and/or the accumulated flow value of the detection pipeline 150 through the second detection part 170, when the pressure value and/or the accumulated flow value reach the set value, the communication between the collection gas circuit and the detection gas circuit is cut off through the valve arranged at the front end of the detection gas circuit, the detection gas circuit stops air intake, and the accuracy of detecting the concentration value of CO by the third detection part 180 is prevented from being influenced by the excessive or insufficient pressure value and/or the accumulated flow value.
Optionally, the second detecting element 170, the third detecting element 180 and the adjusting element 160 are all electrically connected to the controller, so that the controller can receive the detecting signal of the second detecting element 170 and send a control command to the adjusting element 160 according to the detecting signal, so as to automatically adjust the air pressure and/or the accumulated flow of the air to be detected in the detecting pipeline through the adjusting element 160 until the air pressure and/or the accumulated flow meets the set requirements. Only when the air pressure and/or flow of the air to be detected in the detection pipeline meets the set requirement, the controller sends a control instruction to the third detection part 180, and the third detection part 180 detects the air to be detected in the detection pipeline to acquire the concentration value of CO.
It should be noted that, the detection air circuit module 100 further includes a second pumping device 190, where the second pumping device 190 is connected to the detection pipeline 150, so that the expired air can enter the collection pipeline 110, and the alveolar air in the collection pipeline 110 can be pumped into the detection pipeline 150. Of course, the second pumping element 190 can exhaust the residual gases in the collection line 110 and the detection line 150 before the gas production and/or after the detection is completed. Specifically, the second pumping unit 190 may be a pump unit; in addition, to ensure tightness, a switch valve may be disposed at the exhaust end of the detecting pipeline 150, so as to close the detecting pipeline 150 when the second pumping and exhausting member 190 is in a non-working state, so as to avoid interference caused by external air entering. Alternatively, the pump set may be a pump with a flow interruption function, and is not particularly limited herein. For example, an on-off valve may be installed at both ends of the second pumping unit 190.
Based on the above embodiment, the second detecting member 170 includes an air pressure sensor and/or a flow sensor, and the air pressure sensor and/or the flow sensor are/is mounted on the detecting pipeline 150; specifically, the flow sensor may be a flow meter, as long as the flow value can be obtained, and is not particularly limited herein. When in actual use, only one of the air pressure sensor and the flow sensor can be selected, and the air pressure sensor and the flow sensor can be selected at the same time, so that the same function can be achieved no matter which one is selected.
And/or, the third detecting member 180 includes a carbon monoxide concentration sensor mounted to the detecting pipe 150.
And/or, the adjusting member 160 includes an adjusting valve mounted to the detecting line 150 or the collecting line 110; the opening of the regulating valve can be regulated, so that the pressure value and the flow value of the gas to be detected in the detection pipeline can be regulated. The regulating valve can be a butterfly valve or a ball valve; of course, for use with the controller, the regulator valve may be provided as an electric regulator valve to enable automatic control. Obviously, if the regulating valve is a manual regulating valve, the person can read the detection data of the second detecting member 170 or the gas monitoring module to manually control and regulate the manual regulating valve.
On the basis of the above embodiment, the detection gas circuit system further includes a cleaning gas circuit module 400, where the cleaning gas circuit module 400 includes a cleaning pipeline 430, a first reversing element 410 and a second filtering element 420, the cleaning pipeline 430 is communicated with the detection pipeline 150 through the first reversing element 410, and a connection between the cleaning pipeline 430 and the detection pipeline 150 is located upstream of the second detection element; the first diverter 410 is configured to at least switch between the test line 150 connecting to the collection line 110 and the test line 150 connecting to the purge line 430; the second filter 420 is installed on the cleaning pipe 430, and the second filter 420 can filter out the interference gas in the gas flowing through the cleaning pipe 430.
It is easy to understand that the detecting pipeline 150 needs to be flushed after the detection is completed, so as to discharge the retained gas and the detected gas, ensure the cleaning of the detecting pipeline 150, and avoid affecting the next intake detection. Therefore, the cleaning of the detection pipeline 150 can be achieved by providing the cleaning gas circuit module 400.
Illustratively, the connection between the wash line 430 and the test line 150 is located upstream of the regulator, and the first reversing element 410 connects the wash line 430 to the test line 150, so that the test line 150 may be in communication with the collection line 110, or the test line 150 may be in communication with the wash line 430. That is, when the detection line 150 and the collection line 110 are connected, the purge line 430 and the detection line 150 are in a disconnected state, and the gas to be detected in the collection line 110 can flow into the detection line 150 for detection; when the detection line 150 and the purge line 430 are connected, the collection line 110 and the detection line 150 are in a disconnected state, and purge gas collected in the purge line 430 can enter the detection line and be discharged, thereby completing flushing of the detection line 150.
In addition, the air inlet end of the cleaning pipe 430 is connected to an air source, which may be an air storage bag or an external environment, and the second filter 420 is used to remove the interference air, so as to avoid that the interference air remains in the detecting pipe 150 to affect the next detection.
It should be noted that, when the second pumping unit 190 is installed at the end of the detecting pipeline 150, a pumping force can be generated, and when the cleaning pipeline 430 is connected to the detecting pipeline 150, the gas in the external environment can be pumped to pass through the cleaning pipeline 430, the second filtering unit 420, the reversing unit and the detecting pipeline in sequence, so as to obtain the cleaning gas and flush the detecting pipeline 150.
On the basis of the above embodiment, the first filter 140 includes a first dryer 141 and a first filter 142, and the first dryer 141 and the first filter 142 are sequentially installed in the detection pipeline 150; the first filter 142 filters the gas impurities and the solid impurities in the expired air by removing the vaporous water in the expired air by using the first dryer 141, the first dryer 141 comprises a housing and a drying agent arranged in the housing, and the collecting pipeline 110 penetrates through the housing, and the drying agent comprises at least one of caustic soda, soda ash, strong alkali containing potassium, strong alkali containing lithium, calcium chloride, lime, montmorillonite, alumina, molecular sieve, magnesium sulfate and calcium sulfate. Alternatively, in order to enlarge the contact area of the gas, the desiccant adopts a honeycomb structure, a mesh structure, a bag-like structure, or a sheet-like structure.
And/or the second filter 420 includes a second dryer 424, a second filter 422 and a catalyst 423, and the second dryer 424, the second filter 422 and the catalyst 423 are sequentially installed to the cleaning pipe 430; the second dryer 424 is used to remove the vapor water in the purge gas, the first filter filters the gas impurities and solid impurities in the purge gas, the second dryer 424 includes a second housing and a drying agent disposed in the second housing, and the purge line 430 penetrates through the second housing to enable the purge gas to flow through the second housing. Alternatively, reference may be made to the desiccant of the first dryer 141 as to the type and structure of the desiccant. The catalyst 423 is used to remove an interfering gas that interferes with CO measurement in the purge gas.
And/or, the first reversing element 410 includes a reversing valve through which the purge line 430 communicates with the detection line 150; specifically, the detection line 150 is connected to the purge line 430 and the collection line 110 through a reversing valve; of course, the reversing valve can be an electric reversing valve, so that the reversing valve can be automatically controlled and is convenient to operate.
Based on the above embodiment, the detection gas circuit system further includes a control module, which is electrically connected to the detection gas circuit module 100, the gas monitoring module 200, the exhaust gas circuit module 300, and the cleaning gas circuit module 400, respectively.
The control module may be a controller, specifically a PLC controller, so as to obtain the collected first parameter information of the gas to be detected through the gas monitoring module 200, and transmit the first parameter information to the control module, where the control module compares the first parameter information with the detection standard, and if the first parameter information does not meet the detection standard, the control module box exhaust gas path module 300 discharges a portion of the gas to be detected, where the first parameter information does not meet the detection standard.
In addition, after the detection is completed, an instruction may be sent through the control module box cleaning gas circuit module 400 to obtain cleaning gas to further flush the detection pipeline.
On the basis of the above embodiment, the air inlet end of the collecting pipe 110 is further provided with a monitoring sensor 120, the monitoring sensor 120 can obtain the air flow state of the air inlet end, and then whether an exhalation signal exists or not can be known, and the monitoring sensor is electrically connected with the controller.
The fluidity of the gas at the inlet is acquired by the monitoring sensor 120, and the final purpose is to acquire whether the expiratory signal is present at the inlet. When the monitoring sensor 120 monitors the exhalation signal, the first detecting element 210 can be started by manual start or controlled by the controller to detect the gas to be detected entering the collecting pipeline 110; if the first parameter information of the gas to be detected does not meet the detection standard, the first pumping and exhausting component 320 is started to exhaust the part of the gas to be detected, which does not meet the detection standard; if the gas to be detected meets the detection standard, the first pumping unit 320 is closed, and the second pumping unit 190 is started to pump the gas to be detected meeting the detection standard into the detection pipeline 150.
Alternatively, the monitoring sensor 120 may be a pressure detector, a temperature/humidity sensor, a flow meter, a CO 2 A sensor, etc.
On the basis of the above embodiment, the air inlet end includes a first air inlet end 111 and a second air inlet end 112, where the first air inlet end 111 and the second air inlet end 112 are connected to the collecting pipe 110 through the second reversing element 130, so that the first air inlet end 111 is used for collecting exhaled air, the second air inlet end 112 is used for collecting background air, and the monitoring sensor 120 is installed on the first air inlet end 111. Alternatively, the second reversing element 130 may be a three-way valve.
Based on the above embodiment, the first filter 140 further includes a first humidity sensor 143 installed on the collecting pipe 110 and located downstream of the first filter, and the second filter 420 further includes a second humidity sensor 421 installed on the cleaning pipe 430 and located downstream of the second filter 422, so as to precisely control the humidity of the gas to be detected, the background gas and the cleaning gas. Optionally, the first humidity sensor 143 and the second humidity sensor 421 are electrically connected to the controller, and when the humidity of the gas to be detected, the background gas and the purge gas do not meet the requirements, the controller controls the whole system to stop running, and at this time, the first filter 140 and the second filter 420 fail, and replacement is required.
For example, an alarm member may be added and electrically connected to the controller to emit an alarm signal to alert replacement of the first filter member 140 and/or the second filter member 420 when the humidity of the gas to be detected, the background gas, and the purge gas do not meet the requirements; specifically, the alarm may be a display, a buzzer, an alarm lamp, etc.
As shown in fig. 1, in the first embodiment, the reversing valve is a four-way valve, the detecting pipeline 150, the collecting pipeline 110, the exhaust pipeline 310, and the cleaning pipeline 430 are connected through the four-way valve, the second filter 420 is mounted on the cleaning pipeline 430, and the first filter 140 is mounted on the collecting pipeline 110.
As shown in fig. 2, in the second embodiment, the reversing valve is a three-way valve, the detecting pipeline 150, the collecting pipeline 110 and the cleaning pipeline 430 are connected through the three-way valve, the second filter 420 is mounted on the cleaning pipeline 430, and the first filter 140 is mounted on the collecting pipeline 110; wherein the exhaust line 310 is mounted to the collection line 110 upstream of the first filter element 140; in this installation mode, the flow sensor is arranged at the detection air path module to detect the accumulated exhaled air flow, and the exhaust pipeline is controlled to exhaust the air which accords with the air flow of the individual body cavity of the air blower, so that the air to be detected which does not accord with the detection standard is exhausted, the first filter 140 is prevented from filtering the air to be detected which does not accord with the detection standard, and the cost is saved.
As shown in fig. 3, in the third embodiment, the reversing valve is configured as a three-way valve, the detection pipeline 150, the collection pipeline 110, and the cleaning pipeline 430 are connected through the three-way valve, the first filter member 140 is installed on the collection pipeline 110, the connection between the cleaning pipeline 430 and the collection pipeline 110 is located upstream of the first filter member 140, and the first filter 142, the first humidity sensor 143, the catalyst 423, and the second dryer 424 form the second filter member 420; wherein the exhaust line 310 is mounted to the collection line 110 upstream of the first filter element 140; by adopting the installation mode, when the gas to be detected does not meet the detection standard, the gas to be detected which does not meet the detection standard can be directly discharged, so that the first filter 140 is prevented from filtering the gas to be detected which does not meet the detection standard, and the first filter, the humidity sensor, the catalyst 423 and the second dryer 424 form the second filter 420, thereby saving the cost.
According to a second aspect of the present disclosure, there is provided an breath sampling detection apparatus comprising a detection gas circuit system.
Because the detection gas circuit system has the technical effects, the breath sampling detection device comprising the detection gas circuit system should have the same technical effects and will not be described in detail herein.
Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (11)
1. A detection air circuit system, the detection air circuit system comprising:
the detection gas circuit module can collect and detect gas to be detected;
the gas monitoring module is connected with the detection gas circuit module and can acquire first parameter information of the gas to be detected;
the exhaust gas path module is connected with the detection gas path module and can at least discharge the part of the gas to be detected, which does not accord with the detection standard, of the first parameter information.
2. The detection gas circuit system of claim 1, wherein the detection gas circuit module comprises:
the collecting pipeline is provided with an air inlet end;
the first filter piece, first filter piece with gather the pipeline connection, first filter piece can the filtering flow through gather the interference gas in the gaseous gas of pipeline.
3. The detection gas circuit system of claim 2, wherein the first parameter information is CO 2 A concentration value; wherein the gas monitoring module comprises:
the first detection part is arranged on the acquisition pipeline and is used for detecting CO of the gas to be detected 2 Concentration values.
4. The detection gas circuit system of claim 3, wherein the first detection member comprises a carbon dioxide concentration detector, the carbon dioxide concentration detector being connected to the collection line.
5. The detection gas circuit system of claim 2, wherein the exhaust gas circuit module comprises:
the exhaust pipeline is communicated with the acquisition pipeline;
the first pumping piece is connected with the exhaust pipeline and can drive gas in the collection pipeline to flow towards the exhaust pipeline.
6. The detection gas circuit system of claim 2, wherein the detection gas circuit module comprises:
the detection pipeline is communicated with the acquisition pipeline;
the second detection piece and the third detection piece are sequentially arranged along the extending direction of the detection pipeline; the second detection piece can detect the air pressure and/or the flow of the air to be detected in the part of the detection pipeline positioned at the downstream of the third detection piece, and the third detection piece is used for detecting the CO concentration value of the air in the part of the detection pipeline positioned at the downstream of the third detection piece;
the adjusting piece is arranged on the detecting pipeline or the collecting pipeline, the adjusting piece is positioned on the upstream of the second detecting piece and the third detecting piece, and the adjusting piece can adjust the air pressure and/or the flow of the gas to be detected in the part of the detecting pipeline positioned on the downstream of the adjusting piece.
7. The detection air path system according to claim 6, wherein the second detection member includes an air pressure sensor and/or a flow sensor mounted to the detection pipeline;
and/or, the third detection piece comprises a carbon monoxide concentration sensor, and the carbon monoxide concentration sensor is arranged on the detection pipeline;
and/or the adjusting piece comprises an adjusting valve, and the adjusting valve is arranged on the detection pipeline or the acquisition pipeline.
8. The detection gas circuit system of claim 7, further comprising a purge gas circuit module, the purge gas circuit module comprising:
the cleaning pipeline is communicated with the detection pipeline through the first reversing piece, and the joint of the cleaning pipeline and the detection pipeline is positioned at the upstream of the second detection piece; the first reversing element is configured to switch at least between a detection line connecting the collection line and a detection line connecting the cleaning line;
and the second filter piece is arranged on the cleaning pipeline and can filter out interference gas in gas flowing through the cleaning pipeline.
9. The detection air path system according to claim 8, wherein the first filter comprises a first dryer and a first filter, the first dryer and the second filter being sequentially mounted to the detection pipeline;
and/or the second filter element comprises a second dryer, a second filter and a catalyst, and the second dryer, the second filter and the catalyst are sequentially arranged on the cleaning pipeline;
and/or, the first reversing piece comprises a reversing valve, and the cleaning pipeline is communicated with the detection pipeline through the reversing valve.
10. The detection gas circuit system of claim 1, further comprising a control module electrically connected to the detection gas circuit module, the gas monitoring module, and the exhaust gas circuit module, respectively.
11. An breath sampling detection apparatus comprising the detection gas circuit system of any of claims 1 to 10.
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