CN205844040U - A kind of VOCs dilution sampling probe - Google Patents
A kind of VOCs dilution sampling probe Download PDFInfo
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- CN205844040U CN205844040U CN201620839653.3U CN201620839653U CN205844040U CN 205844040 U CN205844040 U CN 205844040U CN 201620839653 U CN201620839653 U CN 201620839653U CN 205844040 U CN205844040 U CN 205844040U
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- vocs
- dilution
- sampling probe
- assembly
- dilution sampling
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Abstract
The utility model discloses a kind of VOCs dilution sampling probe, including: guide wire (1), it is provided with sample gas inlet and sample gas delivery outlet, sample gas inlet connects with discharge duct (101)；Filter assemblies (2), is provided with filtration entrance and crosses air filtration outlet, filter entrance and connect with sample gas delivery outlet；Current limiting component (3), is provided with current limliting entrance, velocity of sound aperture and flow restricting outlets, current limliting entrance and air filtration outlet excessively；And dilution assembly (4), flow restricting outlets connects with dilution assembly (4).Implementing the beneficial effects of the utility model is: described VOCs dilution sampling probe uses the structures such as dilution assembly, it is possible to treating detected gas is diluted, so that the gas concentration to be measured entered in PID detector is in the range of measuring；Furthermore, described VOCs dilution sampling probe employing filter assemblies is treated detected gas and is carried out coarse filtration, to filter oarse-grained dust etc., it is possible to effectively prevent the elements such as clogging flow restriction assembly, to improve the stability of sampling.
Description
Technical field
This utility model relates to VOCs detection technique field, more particularly, it relates to a kind of VOCs dilution sampling probe.
Background technology
VOCs is the english abbreviation of volatile organic matter (Volatile Organic Compounds), be at normal temperatures with
The type organic that vapor form is present in air.VOCs includes alkanes, arene, esters of gallic acid, aldehydes etc., anthropogenic discharge
The partial combustion process being mainly derived from productive life and the industrial circle relating to organic products volatilization loss process, such as
The industry of petrochemical industry, coatings for furniture, printing and dyeing industry etc..The main harm that VOCs causes is mainly manifested in following aspect: portion
Divide and there is toxicity and carcinogenecity, the health of human body can be jeopardized；Participation photochemical fog reacts, and forms ozone, acetylperoxide nitre
Acid esters etc.；Participate in the formation of secondary particulate in air, closely related with the concentration abnormality of PM2.5.Therefore, in commercial production
VOCs discharge carry out administering and monitor particularly significant.
In prior art, generally using PID detector to detect VOCs, this PID detector is the inspection of photoion gas
Surveying instrument, it uses photoion technology to detect gas to be measured, have lightweight, volume is little, highly sensitive and response speed
The advantage such as fast.But, existing PID detector is generally of certain detection range, often can only detect low concentration
VOCs.When some site environment being discharged to the VOCs of high concentration, existing PID detector is difficult to meet testing requirement.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, it is provided that one can be right
Gas to be detected is diluted, to adapt to the VOCs dilution sampling probe of PID detector detection range.
This utility model solves its technical problem and be the technical scheme is that constructing a kind of VOCs dilution sampling visits
Head, including:
Guide wire, is provided with sample gas inlet and sample gas delivery outlet, and described sample gas inlet connects with discharge duct；
Filter assemblies, is provided with filtration entrance and crosses air filtration outlet, and described filtration entrance connects with described sample gas delivery outlet；
Current limiting component, is provided with current limliting entrance, velocity of sound aperture and flow restricting outlets, and described current limliting entrance goes out with described air filtration of crossing
Mouth connection；
And dilution assembly, described flow restricting outlets connects with described dilution assembly.
In VOCs dilution sampling probe described in the utility model, described filter assemblies is polypropylene filter cloth.
In VOCs dilution sampling probe described in the utility model, described dilution assembly includes vacuum generator, and
Source of the gas compressor；Described flow restricting outlets, described source of the gas compressor connect with described vacuum generator respectively.
In VOCs dilution sampling probe described in the utility model, described vacuum generator includes the chamber in threeway shape
Body；Gases at high pressure air inlet, low-pressure gas air inlet and gas outlet it is provided with on described cavity；Described gases at high pressure air inlet
Connect with described source of the gas compressor；Described low-pressure gas air inlet connects with described flow restricting outlets.
In VOCs dilution sampling probe described in the utility model, described gases at high pressure air inlet is provided with jet pipe.
In VOCs dilution sampling probe described in the utility model, described jet pipe from described gases at high pressure air inlet to institute
The direction stating gas outlet is gradually-reducing shape.
In VOCs dilution sampling probe described in the utility model, described dilution assembly includes three-way valve and air
Pump；Described three-way valve is provided with two entrances, and an outlet；Two described entrances respectively with described flow restricting outlets, described
Air pump connects.
In VOCs dilution sampling probe described in the utility model, described VOCs dilution sampling probe also includes blowback
Pipe；Described anti-blowpipe crosses air filtration outlet with described.
In VOCs dilution sampling probe described in the utility model, described VOCs dilution sampling probe also includes:
Housing, described filter assemblies, described current limiting component and described dilution assembly are all encapsulated in described housing；
Thermostatic assembly, described thermostatic assembly is connected with described housing.
In VOCs dilution sampling probe described in the utility model, described thermostatic assembly is heating rod and thermocouple.
Implement VOCs dilution sampling probe of the present utility model, have the advantages that described VOCs dilution sampling is visited
Head uses the structures such as dilution assembly, it is possible to treating detected gas is diluted, so that the gas to be measured entered in PID detector
Concentration is in the range of measuring；Furthermore, described VOCs dilution sampling probe employing filter assemblies is treated detected gas and is carried out coarse filtration,
To filter oarse-grained dust etc., it is possible to effectively prevent the elements such as clogging flow restriction assembly, to improve the spy of described VOCs dilution sampling
The stability of head sampling；Secondly, described VOCs dilution sampling probe uses the structure of current limiting component, it is possible to ensure gas to be detected
Constant speed flowing such that it is able to realize gas to be detected fixed proportion dilution.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation during VOCs dilution sampling probe use of this utility model preferred embodiment offer；
Fig. 2 is the structural representation of the vacuum generator in the VOCs dilution sampling probe shown in Fig. 1；
Fig. 3 is the structural representation during VOCs dilution sampling probe use of another preferred embodiment of this utility model offer
Figure.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.
Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this
Utility model.It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, and it can be directly separately
On one element or may be simultaneously present centering elements.When an element is known as " being connected to " another element, and it can
To be directly to another element or to may be simultaneously present centering elements.Also, it should be noted this utility model is real
Execute the orientation term such as left and right, upper and lower in example, be only relative concept or with the normal operating condition of product as reference each other
, and should not be regarded as restrictive.
As shown in Figure 1 and Figure 2, preferred embodiment of the present utility model provides a kind of VOCs dilution sampling probe 100, its
Including guide wire 1, filter assemblies 2, current limiting component 3 and dilution assembly 4.
Specifically, as it is shown in figure 1, this guide wire 1 is for being delivered to filtration group by the gas to be detected in discharge duct 101
In part 2, it is provided with sample gas inlet and sample gas delivery outlet, and wherein, sample gas inlet connects with discharge duct 101, sample gas delivery outlet
Connect with filter assemblies 2.
As it is shown in figure 1, this filter assemblies 2 is for filtering the oarse-grained dust in gas to be detected.Filter assemblies 2 sets
It is equipped with filtration entrance and crosses air filtration outlet, wherein, filter entrance and connect with sample gas delivery outlet, cross air filtration outlet and current limiting component 3
Connection.Use the structure of this filter assemblies 2, it is possible to effectively prevent clogging flow restriction assembly 3 element such as grade, to improve described VOCs dilution
The stability of sampling probe 100 sampling.In the present embodiment, filter assemblies 2 is polypropylene filter cloth, it is preferable that use polypropylene high density
Filter cloth, it has excellent acid-fast alkali-proof performance, and chemical stability is good.This polypropylene filter cloth uses knot common in the art
Structure, does not repeats them here.
As described in Figure 1, this current limiting component 3 is for ensureing the constant speed flowing of gas to be detected, to realize gas to be detected
Fixed proportion dilutes.Current limiting component 3 is provided with current limliting entrance (not shown), velocity of sound aperture (not shown) (is not schemed with flow restricting outlets
Show), this current limliting entrance and air filtration outlet excessively, this flow restricting outlets connects with dilution assembly 4.This velocity of sound aperture is used for controlling warp
By the flow of flow restricting outlets effluent air, its principle is: when the length of aperture is from far away less than aperture, when two side pressures of aperture
When power reaches more than 0.46 times, the speed that gas flows through aperture is unrelated with the change of the pressure at aperture two ends, and is solely dependent upon gas
Molecule flows through the velocity of vibration of aperture, i.e. produces constant current.In the present embodiment, can control according to the pore size selecting velocity of sound aperture
Stable flow velocity needed for system.
As shown in Figure 1 and Figure 2, this dilution assembly 4 is used for treating detected gas and is diluted.Dilution assembly 4 includes very
Empty generator 41, and source of the gas compressor 42.Flow restricting outlets, source of the gas compressor 42 connect with vacuum generator 41 respectively.
This vacuum generator 41 includes the cavity 411 in threeway shape, and cavity 411 is provided with gases at high pressure air inlet 412, low-pressure gas
Air inlet 413 and gas outlet 414.This gases at high pressure air inlet 412 connects with source of the gas compressor 42, low-pressure gas air inlet
413 connect with flow restricting outlets.In the present embodiment, gases at high pressure air inlet 412 is provided with jet pipe 415, and jet pipe 415 is from gases at high pressure
The direction of air inlet 412 to gas outlet 414 is gradually-reducing shape.Using said structure, during work, jet pipe 415 goes out interruption-forming jet, produces
Raw volume inhales flowing, under Involving velocity so that jet pipe 415 outlet air around is constantly sucked away, in making cavity 411
Pressure is down to below atmospheric pressure, forms certain vacuum degree, and now, the source of the gas in source of the gas compressor 42 and gas to be detected are in chamber
Mix in body 411, to reach to dilute the purpose of gas 411 to be detected.Pressure in this embodiment, in source of the gas compressor 42
Contracting source of the gas can use the pipeline meter wind at scene, it would however also be possible to employ bottled gas.
In other embodiments of the present utility model, VOCs dilution sampling probe 100 also includes anti-blowpipe (not shown), blowback
Manage and cross air filtration outlet.Use the structure of above-mentioned anti-blowpipe, it is possible to imported in filter assemblies 2 by cleaning gas, thus right
Filter assemblies 2 is carried out.
In other embodiments of the present utility model, VOCs dilution sampling probe 100 also include housing (not shown) and
Thermostatic assembly (not shown).Filter assemblies 2, current limiting component 3 and dilution assembly 4 are all encapsulated in housing.Thermostatic assembly and shell
Body connects, and in this embodiment, thermostatic assembly is heating rod and thermocouple.Use the structure of above-mentioned thermostatic assembly, it is possible to ensure
Described VOCs dilution sampling probe 100 operating temperature constant so that gas to be detected will not produce in whole course of conveying
Condense, it is ensured that the gas componant to be detected delivering to PID detector 102 is constant, thus certainty of measurement when improving detection.
Use the VOCs dilution sampling probe 100 described in example performed as described above, owing to described VOCs dilution sampling probe 100 is adopted
By structures such as dilution assemblies 4, it is possible to treating detected gas is diluted, so that the gas to be measured entered in PID detector 102
Concentration is in the range of measuring；Furthermore, described VOCs dilution sampling probe 100 uses filter assemblies 2 to treat detected gas to carry out slightly
Filter, to filter oarse-grained dust etc., it is possible to effectively prevent clogging flow restriction assembly 3 element such as grade, to improve described VOCs dilution
The stability of sampling probe 100 sampling；Secondly, described VOCs dilution sampling probe uses the structure of current limiting component 3, it is possible to ensure
The constant speed flowing of gas to be detected such that it is able to realize the fixed proportion dilution of gas to be detected.
As it is shown on figure 3, in another embodiment of the present utility model, this dilution assembly 4 includes three-way valve 43 and air
Pump 44.Three-way valve 43 is provided with two entrances, and an outlet, and two entrances connect with flow restricting outlets, air pump 44 respectively.
Use above-mentioned three-way valve 43 and the structure of air pump 44, be capable of equally treating the purpose that detected gas is diluted.
Above in conjunction with accompanying drawing, embodiment of the present utility model is described, but on this utility model is not limited to
The detailed description of the invention stated, above-mentioned detailed description of the invention is only schematic rather than restrictive, this area common
Technical staff is under enlightenment of the present utility model, without departing from this utility model objective and scope of the claimed protection situation
Under, it may also be made that a lot of form, within these belong to protection of the present utility model.
Claims (10)
1. a VOCs dilution sampling probe, it is characterised in that: including:
Guide wire (1), is provided with sample gas inlet and sample gas delivery outlet, and described sample gas inlet connects with discharge duct (101)；
Filter assemblies (2), is provided with filtration entrance and crosses air filtration outlet, and described filtration entrance connects with described sample gas delivery outlet；
Current limiting component (3), is provided with current limliting entrance, velocity of sound aperture and flow restricting outlets, and described current limliting entrance goes out with described air filtration of crossing
Mouth connection；
And dilution assembly (4), described flow restricting outlets connects with described dilution assembly (4).
VOCs dilution sampling probe the most according to claim 1, it is characterised in that: described filter assemblies (2) is polypropylene filter
Cloth.
VOCs dilution sampling probe the most according to claim 1, it is characterised in that: described dilution assembly (4) includes vacuum
Generator (41), and source of the gas compressor (42)；Described flow restricting outlets, described source of the gas compressor (42) respectively with described very
Empty generator (41) connection.
VOCs dilution sampling probe the most according to claim 3, it is characterised in that: described vacuum generator (41) include in
The cavity (411) of threeway shape；Gases at high pressure air inlet (412), low-pressure gas air inlet it is provided with on described cavity (411)
And gas outlet (414) (413)；Described gases at high pressure air inlet (412) connects with described source of the gas compressor (42)；Described low
Pressure gas inlet (413) connects with described flow restricting outlets.
VOCs dilution sampling probe the most according to claim 4, it is characterised in that: described gases at high pressure air inlet (412)
It is provided with jet pipe (415).
VOCs dilution sampling probe the most according to claim 5, it is characterised in that: described jet pipe (415) is from described high pressure
Gas inlet (412) is gradually-reducing shape to the direction of described gas outlet (414).
VOCs dilution sampling probe the most according to claim 1, it is characterised in that: described dilution assembly (4) includes threeway
Valve (43) and air pump (44)；Described three-way valve (43) is provided with two entrances, and an outlet；Two described entrances divide
Do not connect with described flow restricting outlets, described air pump (44).
VOCs dilution sampling probe the most according to claim 1, it is characterised in that: described VOCs dilution sampling probe also wraps
Include anti-blowpipe；Described anti-blowpipe crosses air filtration outlet with described.
VOCs dilution sampling probe the most according to claim 1, it is characterised in that: described VOCs dilution sampling probe also wraps
Include:
Housing, described filter assemblies (2), described current limiting component (3) and described dilution assembly (4) are all encapsulated in described housing
In；
Thermostatic assembly, described thermostatic assembly is connected with described housing.
VOCs dilution sampling probe the most according to claim 9, it is characterised in that: described thermostatic assembly be heating rod with
And thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620839653.3U CN205844040U (en) | 2016-08-04 | 2016-08-04 | A kind of VOCs dilution sampling probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620839653.3U CN205844040U (en) | 2016-08-04 | 2016-08-04 | A kind of VOCs dilution sampling probe |
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| Publication Number | Publication Date |
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| CN205844040U true CN205844040U (en) | 2016-12-28 |
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| CN201620839653.3U Active CN205844040U (en) | 2016-08-04 | 2016-08-04 | A kind of VOCs dilution sampling probe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706848A (en) * | 2016-12-09 | 2017-05-24 | 大连福佳·大化石油化工有限公司 | Probe protecting device of hydrogen ion detecting instrument |
| CN110044678A (en) * | 2019-05-27 | 2019-07-23 | 河北鸿海环保科技有限公司 | Flue gas monitoring system Quality Control device and distribution dilution process |
| CN110646361A (en) * | 2018-06-07 | 2020-01-03 | 上海致密科技有限公司 | On-line detection device for detecting total hydrocarbon content of gas |
| CN110824042A (en) * | 2019-11-06 | 2020-02-21 | 海湾环境科技（北京）股份有限公司 | Oil gas monitoring system and method |
| WO2021052433A1 (en) * | 2019-09-19 | 2021-03-25 | 华能国际电力股份有限公司 | Gas sampling measurement system and method for use thereof |
-
2016
- 2016-08-04 CN CN201620839653.3U patent/CN205844040U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706848A (en) * | 2016-12-09 | 2017-05-24 | 大连福佳·大化石油化工有限公司 | Probe protecting device of hydrogen ion detecting instrument |
| CN106706848B (en) * | 2016-12-09 | 2019-04-16 | 大连福佳·大化石油化工有限公司 | Hydrogen ion detector probe-protecting device |
| CN110646361A (en) * | 2018-06-07 | 2020-01-03 | 上海致密科技有限公司 | On-line detection device for detecting total hydrocarbon content of gas |
| CN110646361B (en) * | 2018-06-07 | 2022-11-01 | 上海致密科技有限公司 | On-line detection device for detecting total hydrocarbon content of gas |
| CN110044678A (en) * | 2019-05-27 | 2019-07-23 | 河北鸿海环保科技有限公司 | Flue gas monitoring system Quality Control device and distribution dilution process |
| CN110044678B (en) * | 2019-05-27 | 2023-09-19 | 河北鸿海环保科技股份有限公司 | Quality control device for flue gas monitoring system and gas distribution dilution method |
| WO2021052433A1 (en) * | 2019-09-19 | 2021-03-25 | 华能国际电力股份有限公司 | Gas sampling measurement system and method for use thereof |
| CN110824042A (en) * | 2019-11-06 | 2020-02-21 | 海湾环境科技（北京）股份有限公司 | Oil gas monitoring system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 b1-1201, building b1b2, Guangming science and Technology Park, Investment Promotion Bureau, Fenghuang community, Fenghuang street, Guangming District, Shenzhen, Guangdong (business premises are set up in units 5B and 5C, building B6, Guangming science and Technology Park, Investment Promotion Bureau, Fenghuang community, Fenghuang street, Guangming District, Shenzhen to engage in production and business activities) Patentee after: Shenzhen noan intelligent Co.,Ltd. Address before: 518000 5 / F and 7 / F, building 8, block 2, Zhongguan honghualing Industrial South Zone, No. 1213 Liuxian Avenue, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN NUOAN ENVIRONMENTAL & SAFETY Inc. |