CN212363805U - Gas composition sampling instrument - Google Patents
Gas composition sampling instrument Download PDFInfo
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- CN212363805U CN212363805U CN202020335181.4U CN202020335181U CN212363805U CN 212363805 U CN212363805 U CN 212363805U CN 202020335181 U CN202020335181 U CN 202020335181U CN 212363805 U CN212363805 U CN 212363805U
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Abstract
The utility model discloses a gaseous composition sampling instrument, through adopting first, second gas washing bottle to gather respectively and wait the gaseous and the environmental gas that waits to detect around the device that detects the device production, solve current detection mode, if smell distinguish person or smell detector through the specialty and treat that the gaseous of detection device production is examined time measuring, receive air current, aromatic substance, room background air interference's problem in the surrounding environment easily. The utility model discloses the gaseous detection of preferred air conditioner air-out carries out the constant speed sampling to air conditioner air supply gas through the air sampling pump, adopts gas flowmeter to record the sampling gas volume simultaneously, sends into the sampling gas ion chromatography and carries out qualitative and quantitative analysis, and the concentration of each chemical composition in the accurate air conditioner air-out peculiar smell that obtains.
Description
Technical Field
The utility model belongs to gaseous detection area particularly, relates to a gaseous composition sampling instrument.
Background
With the improvement of living standard, the air conditioner becomes a necessary household appliance for improving the living quality of consumers. However, the air conditioner indoor unit has abnormal air outlet odor in the installation and debugging process of a new air conditioner, and the use and experience of consumers are influenced. Among them, the "outlet air odor" is mainly composed of VOCs (volatile organic compounds), such as: toluene, phenyl ether, toluic acid, styrene, o-xylene, propylene glycol, and the like.
In order to further analyze the cause of the 'air-out peculiar smell' of the air conditioner, the chemical composition components in the 'air-out peculiar smell' need to be detected. At present, the mode of detecting chemical components in 'air-out peculiar smell' in the industry is mainly as follows: 1) a professional olfactor performs olfactive identification on the air supply peculiar smell; 2) a post-sale technician uses a smell detector to test the peculiar smell of the air supply;
however, these methods have some drawbacks:
1) harmful gases can cause harm to human bodies of the sniffers;
2) the odor detector in the industry mainly uses an electrochemical sensor, and the measurement result is easily interfered by aromatic substances (ethanol, isobutanol and the like);
3) odor emitted by a room can be mixed with air supply peculiar smell of an air conditioner, so that an actual detection result is influenced;
4) because the olfactory threshold concentration of a plurality of compounds is very low, the odor of the air supply of the air conditioner can generate convection with the ambient air to dilute the odor, so that the evaluation result of a smell discriminator deviates from the real odor grade level of the air supply of the air conditioner.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a gaseous composition sampling instrument and sampling method, through adopt first, the second gas washing bottle gathers the gaseous and the environmental gas around waiting to detect the detection device production respectively, solve current detection mode, if smell distinguish person or smell detector through the specialty and treat the gaseous of detection device production and examine time measuring, receive air current, aromatic substance, room background air interference in the surrounding environment easily, skew true smell grade, the problem of the production reason that the influence further analysis is waited to detect the device "air-out peculiar smell". Simultaneously, compare professional when distinguishing the person and smell, can't quantify the chemical composition in assessing smell intensity and the further analysis smell, the utility model discloses can carry out quantitative analysis to its composition. The utility model discloses the preferred gaseous detection of air-conditioner air-out that is used for, detection effect is good.
Specifically, the method comprises the following steps: the utility model provides a gaseous composition sampling instrument, the sampling instrument includes flowmeter, gas washing bottle, pump, a plurality of pipeline, its characterized in that: the multiple pipelines comprise a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein one end of the first pipeline forms an air inlet, the other end of the first pipeline is communicated with an inlet of a flow meter, an outlet of the flow meter is communicated with one end of the second pipeline, the other end of the second pipeline is communicated with an inlet of a gas washing bottle, one end of the third pipeline is communicated with an outlet of the gas washing bottle, the other end of the third pipeline is communicated with an inlet of a pump, an outlet of the pump is communicated with one end of the fourth pipeline, and an air outlet is formed at the other end of the fourth pipeline; the number of the gas washing bottles is at least two, and the gas washing bottles comprise a first gas washing bottle and a second gas washing bottle, wherein the first gas washing bottle is used for collecting gas generated by the device to be collected, and the second gas washing bottle is used for collecting gas of the surrounding environment of the device to be collected.
Preferably, the device to be collected is an air conditioner, the first gas washing bottle is used for collecting gas at an air outlet of the air conditioner, and the second gas washing bottle is used for collecting gas in a room where the air conditioner is located.
Preferably, a control device is also included, by means of which the operating parameters of the pump can be controlled.
Preferably, the flow meter communicates flow information to the control means.
Preferably, the control device includes a display and an operation unit.
Preferably, the pump is a constant flow gas pump.
Additionally the utility model also provides a like the sampling method of sampling appearance, its characterized in that: the method comprises the following steps:
s01: mounting a first gas washing bottle on a sampler; sampling gas generated by a device to be collected through a sampling instrument;
s02: after sampling is finished, taking out the first gas washing bottle, and sealing the inlet and the outlet of the first gas washing bottle;
s03: mounting a second gas washing bottle on the sampler; sampling gas in the surrounding environment of the device to be acquired by a sampler;
s04: and after sampling is finished, taking out the second gas washing bottle, and sealing the inlet and the outlet of the second gas washing bottle.
Preferably, step S01 is preceded by the following steps:
S01A; cleaning the first gas washing bottle and the second gas washing bottle and drying the first gas washing bottle and the second gas washing bottle;
S01B: and filling the first gas washing bottle and the second gas washing bottle with detection liquid, and sealing the inlet and the outlet of the first gas washing bottle and the second gas washing bottle.
Preferably, the sampling instrument is used for collecting gas at an air outlet of the air conditioner, and the first and second gas washing bottles are cleaned by deionized water; the detection solution is deionized water solution with a pH value of a preset value.
Preferably, step S04 is followed by the step of: s05: and sending the first gas washing bottle and the second gas washing bottle to a detection chamber for detection.
Has the advantages that:
the utility model discloses a gaseous composition sampling instrument uses the gas washing bottle to draw "air-out peculiar smell" respectively and the chemical composition in the air all around, sends into ion chromatography and carries out qualitative and quantitative analysis, gets rid of the hidden danger that receives room background air, aromatic substance interference. The utility model discloses be equipped with constant current air sampling pump, realize the compensation of temperature and pressure in the sampling process, the speed of simultaneous control gas sampling. The utility model discloses a flowmeter can accurately obtain the sampling gas volume, then send sampling gas into ion chromatography and carry out qualitative and quantitative analysis, accurately obtain the concentration of each chemical composition in the air conditioner air-out peculiar smell.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic view of a gas component sampling instrument of the present invention.
Fig. 2 is a schematic view of a control system of the gas component sampling instrument of the present invention.
Fig. 3 is a schematic diagram of a control flow of the gas component sampling instrument of the present invention.
Wherein: 1-a first pipeline, 2-a second pipeline, 3-a third pipeline, 4-a fourth pipeline, 5-a flow meter, 51-a flow meter inlet, 52-a flow meter outlet, 6-a control device, 7-a first gas washing bottle, 71-a first gas washing bottle inlet, 72-a first gas washing bottle outlet, 8-a pump, 9-a substrate, and 91-a fixed seat.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the disclosure.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various structures, these structures should not be limited by these terms. These terms are used to distinguish one structure from another structure. Thus, a first structure discussed below may be termed a second structure without departing from the teachings of the disclosed concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It is to be understood by those skilled in the art that the drawings are merely schematic representations of exemplary embodiments, and that the blocks or processes shown in the drawings are not necessarily required to practice the present disclosure and are, therefore, not intended to limit the scope of the present disclosure.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings 1-3:
as shown in figure 1, the utility model discloses a gaseous composition sampling appearance especially can have the air VOC composition sampling that is used for the air conditioner, carries out the constant speed sampling to air conditioner air supply gas through air sampling pump 8, adopts gas flowmeter 5 to survey the sampling gas volume simultaneously, sends into the ion chromatogram with the sampling gas and carries out qualitative and quantitative analysis, and the concentration of each chemical composition in the accurate acquisition air conditioner air-out peculiar smell.
The utility model discloses a gas composition sampling instrument, sampling instrument include flowmeter 5, gas washing bottle, pump 8, a plurality of pipeline, its characterized in that: the multiple pipelines comprise a first pipeline 1, a second pipeline 2, a third pipeline 3 and a fourth pipeline 4, wherein one end of the first pipeline 1 forms an air inlet, the other end of the first pipeline is communicated with a flow meter inlet 51, a flow meter outlet 52 is communicated with one end of the second pipeline 2, the other end of the second pipeline 2 is communicated with an inlet of a gas washing bottle, one end of the third pipeline 3 is communicated with an outlet of the gas washing bottle, the other end of the third pipeline 3 is communicated with an inlet of a pump 8, an outlet of the pump 8 is communicated with one end of the fourth pipeline 4, and an air outlet is formed at the other end of the fourth pipeline 4; the number of the gas washing bottles is at least two, the gas washing bottles comprise a first gas washing bottle 7 and a second gas washing bottle, the first gas washing bottle 7 is used for collecting gas generated by the device to be collected, and the second gas washing bottle is used for collecting gas of the surrounding environment of the device to be collected. As shown in fig. 1, the sampler comprises a base plate 9, a fixing seat 91 is arranged on the base plate 9, the fixing seat 91 is used for installing a gas washing bottle, wherein a first gas washing bottle 7 is shown, the first gas washing bottle 7 is provided with a first gas washing bottle inlet 71, and a first gas washing bottle outlet 72 can be detached from the fixing seat and replaced by a second gas washing bottle.
The utility model discloses a treat collection system can be the air conditioner, and first gas washing bottle 7 is used for collecting air conditioner air outlet gas, and the second gas washing bottle is used for gathering the gas in the room that the air conditioner was located. The sampler further comprises a control device 6, the operating parameters of the pump 8 can be controlled by the control device 6, the control device 6 can comprise a display and an operating unit, and the flow meter 5 transmits flow information to the control device 6. The pump 8 may be a constant flow gas pump 8.
Additionally the utility model also provides a like the sampling method of sampling appearance, its characterized in that: the method comprises the following steps: s01: mounting the first gas washing bottle 7 to the sampler; sampling gas generated by a device to be collected through a sampling instrument; s02: after sampling is finished, taking out the first gas washing bottle 7, and sealing the inlet and the outlet of the first gas washing bottle 7; s03: mounting a second gas washing bottle on the sampler; sampling gas in the surrounding environment of the device to be acquired by a sampler; s04: and after sampling is finished, taking out the second gas washing bottle, and sealing the inlet and the outlet of the second gas washing bottle.
Step S01 is preceded by the following steps: S01A; cleaning the first gas washing bottle 7 and the second gas washing bottle, and drying the first gas washing bottle and the second gas washing bottle; S01B: and filling the first gas washing bottle 7 and the second gas washing bottle with detection liquid, and sealing the inlet and the outlet of the first gas washing bottle and the second gas washing bottle.
The sampling instrument of the utility model is used for collecting the gas at the air outlet of the air conditioner, and the first and the second gas washing bottles are cleaned by deionized water; the detection solution is deionized water solution with a pH value of a preset value.
Optionally, step S04 is followed by the step of: s05: and sending the first gas washing bottle 7 and the second gas washing bottle to a detection chamber for detection.
The utility model discloses a sampling instrument comprises gas flowmeter 5, gas washer, air sampling pump 8 and controlling means 6, and wherein, the gas washer of sampling adopts quartz material or high boric acid glass material, and the glass sand mould can be taken to inside, and the ground is sealed, and the volume can be 500 mL.
Under the action of the air sampling pump 8, air supplied by the air conditioner flows through the gas flowmeter 5 to enter the gas washing bottle and is finally discharged by the air sampling pump 8, and the whole structure is shown in figure 1.
The parameters (e.g., sampling speed, time, etc.) of the air sampling pump 8 may be set by the control device 6. The gas flowmeter 5 measures the volume flow of the sampled gas, feeds back the detection data to the control device 6 (processor) in real time, and the control device 6 calculates the total volume of the sampled gas according to the volume flow and the sampling time, and the automatic control system and the control flow are shown in fig. 2 and fig. 3:
as shown in fig. 2, the user can operate the sampling device through keys (keyboard), the display can display the working or operating state of the sampling device, the keys are connected with the control device 6 through the interface, and the control device 6 is simultaneously in control connection with the flow meter 5 through the interface and in control connection with the pump 8 through the interface. At the same time, the control device 6 can also time the acquisition of the pump 8.
As shown in fig. 3, after the user inputs the command through the operation panel, the processor performs decoding preprocessing, acquires the command, and transmits the command to the motor speed controller, and the motor speed controller transmits the command to the encoder through the motor driver, controls the output of the motor of the pump 8, and performs sampling operation, wherein the speed feedback is further included to control the speed.
The following further describes an embodiment of a sampling test flow using the above-mentioned sampling apparatus as an embodiment:
firstly, a first gas washing bottle 7 and a reference second gas washing bottle are respectively prepared for sampling before sampling, the first gas washing bottle 7 is sampled to collect an air sample discharged from an air outlet of the air conditioner, and the reference second gas washing bottle is used as a background reference to collect room background air. Repeatedly cleaning the gas washing bottle with deionized water for three times, and baking in an oven at 110 ℃ for more than 2 hours;
after baking, pouring 100-150mL of deionized water solution (pH is adjusted by Stachys sieboldii) with pH of 9.0 through the air inlet 6 of the air washing bottle, and sealing the air inlet 6 and the air outlet 8 of the air washing bottle by tinfoil to prevent other air components from entering in the transportation process;
thirdly, after the sample arrives at a sampling place, the first gas washing bottle 7 is installed on a gas washing bottle fixing seat 919, the tinfoil seal package of a gas inlet 6 and a gas outlet 8 of the first gas washing bottle 7 is opened, a flow meter 5-gas washing bottle connecting pipe 4 is connected to the gas inlet 6, and a gas washing bottle-sampling pump 8 connecting pipe 10 is connected to the gas outlet 8;
power on, using the control device 65 to set the parameters of the sampling instrument: the sampling speed is 100-;
and fifthly, starting the sampling instrument, enabling air discharged from the air outlet of the air conditioner to enter the gas flowmeter 53 from the air inlet 1 of the sampling instrument, covering the air outlet of the air conditioner by adopting a closed tool, and enabling all air to enter the gas flowmeter 53 at the air inlet of the sampling instrument to measure the volume of the sampled gas. The sampled gas enters a gas washing bottle 7 through a flowmeter 5-gas washing bottle connecting pipe 4, and the gas washing bottle 7 extracts volatile organic compounds in the sampled gas. The residual gas is discharged from the air outlet 12 of the air sampling pump 8 under the action of the air sampling pump 811;
sixthly, after sampling is finished, taking out the first gas washing bottle 7, sealing the gas inlet 6 and the gas outlet 8 of the gas washing bottle by using tinfoil, then replacing the second gas washing bottle, repeating the operation from three to five times, and sampling the indoor air to be used as a background reference sample of the sampling gas washing bottle;
and seventhly, after the sampling of the sample is finished, closing the sampling instrument, and sending the sampled first gas washing bottle 7 and the reference second gas washing bottle into a detection chamber of the ion chromatography detection chamber for qualitative and quantitative analysis. If a large amount of acid anions are detected in the second gas washing bottle, the gas washing bottle is polluted in the transportation process, and the detection result of A is unavailable; if no acid anion is detected in the reference second gas scrubber bottle, while the sample first gas scrubber bottle 7 has acid anions, this component is indicated to originate from the air conditioner outlet gas.
Has the advantages that:
the utility model discloses a gaseous composition sampling instrument and sampling method, through adopting first, second gas washing bottle to gather respectively and wait the gaseous and waiting the environmental gas around the detection device that the detection device produced, solve current detection mode, if smell the person or smell detector through the specialty and treat that the gas that detection device produced detects time measuring, receive the problem of air current, aromatic substance, room background air interference in the surrounding environment easily. The utility model discloses the gaseous detection of preferred air conditioner air-out carries out the constant speed sampling to air conditioner air supply gas through air sampling pump 8, adopts gas flowmeter 5 to survey the sampling gas volume simultaneously, sends into the sampling gas ion chromatography and carries out qualitative and quantitative analysis, and the concentration of each chemical composition in the accurate air conditioner air-out peculiar smell that obtains.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (6)
1. The utility model provides a gas composition sampling instrument, the sampling instrument includes flowmeter (5), gas washing bottle, pump (8), a plurality of pipeline, its characterized in that: the multiple pipelines comprise a first pipeline (1), a second pipeline (2), a third pipeline (3) and a fourth pipeline (4), wherein an air inlet is formed at one end of the first pipeline (1), the other end of the first pipeline is communicated with a flowmeter inlet (51), a flowmeter outlet (52) is communicated with one end of the second pipeline (2), the other end of the second pipeline (2) is communicated with an inlet of a gas washing bottle, one end of the third pipeline (3) is communicated with an outlet of the gas washing bottle, the other end of the third pipeline (3) is communicated with an inlet of a pump (8), an outlet of the pump (8) is communicated with one end of the fourth pipeline (4), and an air outlet is formed at the other end of the fourth pipeline (4); the number of the gas washing bottles is at least two, the gas washing bottles comprise a first gas washing bottle (7) and a second gas washing bottle, the first gas washing bottle (7) is used for collecting gas generated by the device to be collected, and the second gas washing bottle is used for collecting gas of the surrounding environment of the device to be collected.
2. The sampler of claim 1, wherein: the device to be collected is an air conditioner, the first gas washing bottle (7) is used for collecting gas at an air outlet of the air conditioner, and the second gas washing bottle is used for collecting gas in a room where the air conditioner is located.
3. The sampler of claim 1, wherein: the device also comprises a control device (6), and the operating parameters of the pump (8) can be controlled through the control device (6).
4. The sampler of claim 3, wherein: the flowmeter (5) transmits flow information to the control device (6).
5. The sampler of claim 3, wherein: the control device (6) comprises a display and an operating unit.
6. The sampler according to any one of claims 1 to 5, wherein: the pump (8) is a constant flow gas pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020335181.4U CN212363805U (en) | 2020-03-17 | 2020-03-17 | Gas composition sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020335181.4U CN212363805U (en) | 2020-03-17 | 2020-03-17 | Gas composition sampling instrument |
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| Publication Number | Publication Date |
|---|---|
| CN212363805U true CN212363805U (en) | 2021-01-15 |
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|---|---|---|---|
| CN202020335181.4U Active CN212363805U (en) | 2020-03-17 | 2020-03-17 | Gas composition sampling instrument |
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| CN (1) | CN212363805U (en) |
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- 2020-03-17 CN CN202020335181.4U patent/CN212363805U/en active Active
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