CN208621575U - For detecting the evaporation confined chamber of harmful substance - Google Patents
For detecting the evaporation confined chamber of harmful substance Download PDFInfo
- Publication number
- CN208621575U CN208621575U CN201821008181.2U CN201821008181U CN208621575U CN 208621575 U CN208621575 U CN 208621575U CN 201821008181 U CN201821008181 U CN 201821008181U CN 208621575 U CN208621575 U CN 208621575U
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- Prior art keywords
- confined chamber
- elastic membrane
- harmful substance
- detecting
- evaporation
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Abstract
The utility model discloses a kind of for detecting the evaporation confined chamber of harmful substance, including confined chamber, orifice plate, pressing plate, driving device and elastic membrane, orifice plate is installed in any on one or more surfaces of confined chamber, elastic membrane is arranged on the lateral surface of corresponding orifice plate, pressing plate is arranged on the lateral surface of corresponding elastic membrane, driving device is sequentially connected with corresponding pressing plate, to drive moving forward and backward for pressing plate, compresses elastic membrane with this and is in contact with orifice plate.The utility model structure is simple, by the setting of elastic membrane, elastic membrane is heaved with the rising of closed room temperature, is shunk with the decline of temperature, closed indoor gas is compensated in time, and by the setting of orifice plate, effectively avoids harmful substance from remaining on gas compensation device, influence measuring accuracy, simultaneously, overall structure setting is simpler, effectively avoids external environment or other uncertain factors from impacting testing result, improves the precision of detection.
Description
Technical field
The utility model relates to confined chamber technical fields, more specifically, are related to a kind of for detecting harmful substance
Evaporate confined chamber.
Background technique
In existing automobile all there is the volatilization of harmful substance in the components such as fuel tank, tire, automobile exterior, automobile chassis, when waving
When the concentration of hair property harmful substance is more than a certain range, can cause harm to the human body, it is therefore desirable to the harmful substance of automobile into
Row collects detection.
Currently, industrially there are many systems for carrying out sample detecting to volatile hazardous substances, Fig. 3 shows a kind of biography
The evaporation confined chamber of system, including confined chamber 100, internal compensation bag 200 and external compensation bag 300,200 bags of internal compensation pass through branch
Frame is installed in confined chamber 100, and the inner upper of confined chamber 100 is arranged in, external compensation bag 300 by pipeline with it is close
It is connected inside closed chamber 100, before detection starts, gas some or all of in discharge internal compensation bag 200 and external compensation bag 300
Body, in detection process, internal compensation bag 200 and external compensation bag 300 being decreased or increased with 100 internal gas of confined chamber,
To timely gas compensation is carried out inside confined chamber 100, prevent the polluted gas of confined chamber outer 100 because draught head is into or out
Inside confined chamber 100, improve measuring accuracy, however, by the setting of internal compensation bag 200, the setting of internal compensation bag 200 compared with
Greatly, it and needs to be fixed by biggish bracket, when leading to sample detecting, on the outside of internal compensation bag 200 and bracket
Certain harmful substance is remained, the precision of test is influenced, meanwhile, when sample detecting, gas enters in external compensation bag 300, so
And the inside of external compensation bag 300 is not easily cleaned completely, leads to inside external compensation bag 300 that still residual harmful substance can not be arranged
Out, the precision of test is influenced with this.
Summary of the invention
The purpose of the utility model is to overcome drawbacks described above in the prior art, and providing one kind can be avoided external environment
Or other uncertain factors impact test result to effectively improve the steaming for being used to detect harmful substance of detection accuracy
Send out confined chamber.
To achieve the above object, the utility model provides a kind of for detecting the evaporation confined chamber of harmful substance, including
It is connected inside confined chamber and inlet duct, the inlet duct and confined chamber, the confined chamber is connected with exhaust pipe, described
Thief hatch is offered on confined chamber, is provided on the confined chamber for carrying out gas to confined chamber inside in gas sampling process
The gas compensation device of body cubage compensation, the gas compensation device are arranged on one or more surfaces of confined chamber, the gas
Compensation device includes orifice plate, pressing plate, driving device and elastic membrane, the orifice plate be installed in confined chamber it is any one or more surfaces
On, the elastic membrane is arranged on the lateral surface of corresponding orifice plate, and the pressing plate is arranged on the lateral surface of corresponding elastic membrane,
The driving device is sequentially connected with corresponding pressing plate, to drive moving forward and backward for pressing plate, compresses elastic membrane and orifice plate with this
It is in contact, the inlet duct includes the first blower or pump, filter and valve, first blower or pump, filter and valve
Door be connected inside confined chamber.
Preferably, being covered with insulation jacket outside the confined chamber, the insulation jacket is provided with temperature-controlling system.
Preferably, being covered with protective cover on the lateral surface of the gas compensation device, the protective cover is located at pressure
On the lateral surface of plate.
Preferably, being provided with closed hatch door on the confined chamber, temperature control is provided with inside or outside the confined chamber
Or/and the wet device of control.
Preferably, being provided with blender in the confined chamber.
Preferably, the inner wall of the confined chamber is equipped with the anti-absorbent coating for preventing noxious substance.
Preferably, being provided with drain tap on the exhaust pipe.
Preferably, the confined chamber is connected with internal purification device, the internal purification device include purification circuit,
Air inlet valve, gas outlet valve, polishing filter and the second blower, the both ends of the purification circuit are connected with confined chamber respectively
It connects.
Preferably, the outside of the confined chamber is provided with air intake valve and inlet air flow meter.
Preferably, the elastic membrane is set as fluoride elastic membrane.
Compared with prior art, the utility model has the beneficial effects that:
The utility model structure is simple, including confined chamber and for carrying out gas to confined chamber inside in gas sampling process
The gas compensation device of body cubage compensation, gas compensation device are arranged on one or more surfaces of confined chamber, wherein gas compensation
Device includes orifice plate, pressing plate, driving device and elastic membrane, and orifice plate is installed in any on one or more surfaces of confined chamber, elastic membrane
Be arranged on the lateral surface of corresponding orifice plate, pressing plate is arranged on the lateral surface of corresponding elastic membrane, driving device with it is corresponding
Pressing plate transmission connection, to drive moving forward and backward for pressing plate, compresses elastic membrane with this and is in contact with orifice plate, pass through setting for elastic membrane
It sets, elastic membrane is heaved with the rising of closed room temperature, is shunk with the decline of temperature, so that closed indoor gas
It can be compensated in time, and by the setting of orifice plate, harmful substance effectively be avoided to remain on gas compensation device, influence to survey
Precision is tried, meanwhile, overall structure setting is simpler, and external environment or other uncertain factors is effectively avoided to make testing result
At influence, the precision of detection is improved.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is provided by the utility model for detecting the overall structure diagram of the evaporation confined chamber of harmful substance；
Fig. 2 is provided by the utility model for detecting the partial structural diagram of the evaporation confined chamber of harmful substance；
Fig. 3 is the overall structure diagram of traditional evaporation confined chamber provided by the utility model；
Fig. 4 is provided by the utility model another for detecting the structural schematic diagram of the evaporation confined chamber of harmful substance.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment one
Fig. 1 and Fig. 2 are please referred to, it is close that the embodiments of the present invention one provide a kind of evaporation for detecting harmful substance
Closed chamber, the gas compensation including confined chamber 1 and for carrying out gas volume compensation to confined chamber inside in gas sampling process
Device 5, gas compensation device 5 be arranged in confined chamber 1 one or more surfaces on, wherein gas compensation device 5 include orifice plate 6, pressure
Plate 7, driving device 8 and elastic membrane 9, orifice plate 6 are installed in any on one or more surfaces of confined chamber 1, and elastic membrane 9 is arranged in phase
On the lateral surface for the orifice plate 6 answered, pressing plate 7 is arranged on the lateral surface of corresponding elastic membrane 9, driving device 8 and corresponding pressing plate 7
Transmission connection, to drive moving forward and backward for pressing plate 7, compresses elastic membrane 9 with this and is in contact with orifice plate 6, right with reference to the accompanying drawing
The present embodiment is described in detail.
As depicted in figs. 1 and 2, it is connected inside inlet duct 2 and confined chamber 1, confined chamber 1 is connected with exhaust pipe 3, close
Thief hatch 4 is offered on closed chamber 1, be provided on confined chamber 1 in gas sampling process to carrying out gas inside confined chamber 1
The gas compensation device 5 of cubage compensation, gas compensation device 5 be arranged in confined chamber 1 one or more surfaces on, gas compensation device
5 include orifice plate 6, pressing plate 7, driving device 8 and elastic membrane 9, and orifice plate 6 is installed in any on one or more surfaces of confined chamber 1, bullet
Property film 9 is arranged on the lateral surface of corresponding orifice plate 6, and pressing plate 7 is arranged on the lateral surface of corresponding elastic membrane 9, driving device 8
It is sequentially connected with corresponding pressing plate 7, to drive moving forward and backward for pressing plate 7, elastic membrane 9 is compressed with this and is in contact with orifice plate 6, bullet
Property film 9 is heaved with the rising of temperature in confined chamber 1, is shunk with the decline of temperature, enables gas in confined chamber 1
It is enough to be compensated in time, and pass through the setting of orifice plate 6, aperture is set as large aperture on orifice plate 6, certainly for gas in confined chamber 1
By circulating, harmful substance is effectively avoided to remain on gas compensation device 5, influences measuring accuracy, meanwhile, overall structure setting
It is simpler, it effectively avoids external environment or other uncertain factors from impacting testing result, improves the precision of detection.
Wherein, inlet duct 2 includes the first blower or pump 16, filter 17 and valve 18, and the first blower or pump 16 filter
Device 17 and valve 18 are sequentially connected, and be connected inside confined chamber 1, drain tap 15 is provided on exhaust pipe 3, test is opened
In preparation before beginning, the first blower or pump 16 are toward being blowed inside confined chamber 1, again by the air inside confined chamber 1
Displacement, is changed after the completion of wind, is closed valve 18 and is stopped air inlet, close the drain tap 15 on exhaust pipe 3, stop outlet air, completes
Preparation is passed through clean gas by starting to go in confined chamber 1 in detection, and original polluted gas in confined chamber 1 is discharged,
Gas washing and ventilation are carried out to confined chamber 1, the test environment of a standard stabiliser is provided to detect, detection accuracy is effectively ensured.
Preferably, being covered with insulation jacket 10 outside confined chamber 1, insulation jacket 10 is provided with temperature-controlling system, passes through thermal insulation clamp
The setting of set 10 effectively keeps the temperature of confined chamber 1, guarantees the precision of detection.
Preferably, being covered with protective cover 11 on the lateral surface of gas compensation device 5, protective cover 11 is located at the outer of pressing plate 7
On side, elastic membrane 9 is avoided to be damaged, the service life of equipment is effectively ensured.
In the present embodiment, it is provided with closed hatch door 12 on confined chamber 1, is provided with temperature control or control inside or outside confined chamber 1
Wet device 13 is adjusted the temperature and humidity in confined chamber 1 by the setting of temperature control or the wet device 13 of control, is nuisance
The detection of matter provides a stable test environment, improves the precision of detection, wherein is provided with blender 14 in confined chamber 1, leads to
The setting for crossing blender 14, the Gas Stirring inside confined chamber 1 is uniform.
Preferably, the inner wall of confined chamber 1 is equipped with the anti-absorbent coating for preventing noxious substance, it effectively prevent nocuousness
Substance is adsorbed on the inner wall of confined chamber 1, to influence the precision of test.
Preferably, elastic membrane 9 is set as fluoride elastic membrane, specifically, the fluoride materials can be polytetrafluoroethylene (PTFE)
Or other fluorides.Wherein, the compensation bag made of fluoride materials can prevent the outer wall absorption volatility of compensation bag organic
Object improves measuring accuracy.
Preferably, confined chamber 1 is connected with internal purification device 19, internal purification device 19 includes purification circuit 20, air inlet
Mouthful valve 21, gas outlet valve 22, polishing filter 23 and the second blower 24, it is air inlet valve 21, gas outlet valve 22, net
Change filter 23 and the second blower 24 to be sequentially connected by purification circuit 20, the both ends of purification circuit 20 respectively with 1 phase of confined chamber
Connection.
For detecting the evaporation confined chamber of harmful substance, including following detecting step:
(1) drain tap 15 is opened, the first blower or pump 16 and valve 18 are run, outside air is carried out by filter 17
1 internal contamination gas displacement of confined chamber is clean gas into inside confined chamber 1 by filtering, meanwhile, in openable confined chamber 1
The blender 14 in portion, and open temperature control or the wet device 13 of control；
(2) trial target is put into confined chamber 1, internal purification device 19 is run, and cleans confined chamber 1；
(3) internal purification device 19 is closed, air inlet valve 21 or/and gas outlet valve 22 are closed；
(4) driving device 8 drives pressing plate 7 to move, and elastic membrane 9 and 6 phase of orifice plate are compressed, and controls 1 internal temperature of confined chamber
For t1,1 internal capacity of confined chamber is V1 at this time；
(5) driving device 8 resets, and 1 internal temperature of confined chamber is increased to t2, elastic membrane 9 expands, at this time confined chamber
1 internal capacity is V2=(273+T2)/(273+T1) * V1；
(6) 1 internal temperature of confined chamber is continued to be increased to t3, elastic membrane 9 continues to expand, and 1 volume of confined chamber is V3 at this time
=(273+T3)/(273+T1) * V1；
(7) after the completion of adjusting, control 1 internal temperature of confined chamber is run in t1 between t3, and trial target becomes in different temperatures
By in pollutant emission to confined chamber 1 between change, 1 internal contamination object concentration of confined chamber is detected from thief hatch 4, trial target is obtained and is trying
Test the discharge amount of the pollutant under state.
It is realized with this and the polluted gas inside confined chamber 1 is discharged before testing, be replaced into clean gas, provided for test
One clean free of contamination test environment, effectively improves the precision of test, in sampling process, elastic membrane 9 with temperature change
Change contraction or expansion, to provide gas compensation inside confined chamber 1, effectively prevent outside contamination gas because draught head enters confined chamber
Inside 1, the precision of test is further increased.
Embodiment two
As shown in figure 4, the utility model embodiment two provides another evaporation confined chamber for being used to detect harmful substance,
The outside of confined chamber 1 is provided with air intake valve and inlet air flow meter, and the utility model embodiment two is used to detect harmful substance
Evaporation confined chamber and above-described embodiment one the evaporation confined chamber for detecting harmful substance structure it is largely identical, it is identical
Place repeats no more.
In the present embodiment, the outside of confined chamber 1 is provided with air intake valve 25 and inlet air flow meter 26,1 temperature of control confined chamber
Degree is t1, and 1 volume of confined chamber is V1 at this time, after driving device 9 resets, closes the valve in addition to air intake valve 25, closed
1 internal temperature of room rises to t2, and 1 volume of confined chamber is V2=(273+T2)/(273+T1) * V1, inlet air flow meter 26 control into
Entering air mass flow is that (V2-V1) elastic membrane 9 expands, and closes air intake valve 25,1 internal temperature of confined chamber is risen to t3,
Control 1 internal temperature of confined chamber is run in t1 between t3, and trial target is between different temperatures variation by pollutant emission to closed
In room 1,1 internal contamination object concentration of confined chamber is detected from thief hatch 4, obtains the discharge of the pollutant of trial target at the test condition
Amount.
It is realized with this and the polluted gas inside confined chamber 1 is discharged before testing, be replaced into clean gas, provided for test
One clean free of contamination test environment, effectively improves the precision of test, in sampling process, elastic membrane 9 with temperature change
Change contraction or expansion, to provide gas compensation inside confined chamber 1, effectively prevent outside contamination gas because draught head enters confined chamber
Inside 1, the precision of test is further increased.
In conclusion the utility model structure is simple, including confined chamber 1 and in gas sampling process to confined chamber
1 inside carries out the gas compensation device 5 of gas volume compensation, and one or more surfaces of confined chamber 1 is arranged in gas compensation device 5
On, wherein gas compensation device 5 includes orifice plate 6, pressing plate 7, driving device 8 and elastic membrane 9, and orifice plate 6 is installed in confined chamber 1
Arbitrarily on one or more surfaces, elastic membrane 9 is arranged on the lateral surface of corresponding orifice plate 6, and pressing plate 7 is arranged in corresponding elastic membrane 9
Lateral surface on, driving device 8 is sequentially connected with corresponding pressing plate 7, to drive moving forward and backward for pressing plate 7, compresses bullet with this
Property film 9 is in contact with orifice plate 6, and by the setting of elastic membrane 9, elastic membrane 9 is heaved with the rising of temperature in confined chamber 1, with
The decline of temperature and shrink, the gas in confined chamber 1 is compensated in time, and by the setting of orifice plate 6, effectively
It avoids harmful substance from remaining on gas compensation device 5, influences measuring accuracy, meanwhile, overall structure setting is simpler, effectively
It avoids external environment or other uncertain factors from impacting testing result, improves the precision of detection.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (10)
1. a kind of for detecting the evaporation confined chamber of harmful substance, including confined chamber (1) and inlet duct (2), the air inlet dress
It sets and is connected inside (2) and confined chamber (1), the confined chamber (1) is connected with exhaust pipe (3), opens up on the confined chamber (1)
There are thief hatch (4), it is characterised in that: be provided on the confined chamber (1) for interior to confined chamber (1) in gas sampling process
Portion carries out the gas compensation device (5) of gas volume compensation, one side of gas compensation device (5) setting in confined chamber (1)
Or in multi-panel, the gas compensation device (5) includes orifice plate (6), pressing plate (7), driving device (8) and elastic membrane (9), the hole
Plate (6) is installed in any on one or more surfaces of confined chamber (1), outside of elastic membrane (9) setting in corresponding orifice plate (6)
On face, the pressing plate (7) is arranged on the lateral surface of corresponding elastic membrane (9), the driving device (8) and corresponding pressing plate
(7) be sequentially connected, to drive moving forward and backward for pressing plate (7), elastic membrane (9) is compressed with this and is in contact with orifice plate (6), it is described into
Device of air (2) includes the first blower or pump (16), filter (17) and valve (18), and first blower or pump (16) filter
It is connected inside device (17) and valve (18) and confined chamber (1).
2. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the confined chamber
(1) it is covered with insulation jacket (10) outside, the insulation jacket (10) is provided with temperature-controlling system.
3. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the gas compensation
It is covered on the lateral surface of device (5) protective cover (11), the protective cover (11) is located on the lateral surface of pressing plate (7).
4. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the confined chamber
(1) it is provided on closed hatch door (12), the confined chamber (1) is internal or external to be provided with temperature control or/and the wet device (13) of control.
5. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the confined chamber
(1) blender (14) are provided in.
6. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the confined chamber
(1) inner wall is equipped with the anti-absorbent coating for preventing noxious substance.
7. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the exhaust pipe
(3) drain tap (15) are provided on.
8. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the confined chamber
(1) it is connected with internal purification device (19), the internal purification device (19) includes purification circuit (20), air inlet valve
(21), gas outlet valve (22), polishing filter (23) and the second blower (24), the both ends of the purification circuit (20) respectively with
Confined chamber (1) is connected.
9. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the confined chamber
(1) outside is provided with air intake valve (25) and inlet air flow meter (26).
10. according to claim 1 for detecting the evaporation confined chamber of harmful substance, it is characterised in that: the elastic membrane
(9) it is set as fluoride elastic membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821008181.2U CN208621575U (en) | 2018-06-27 | 2018-06-27 | For detecting the evaporation confined chamber of harmful substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821008181.2U CN208621575U (en) | 2018-06-27 | 2018-06-27 | For detecting the evaporation confined chamber of harmful substance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208621575U true CN208621575U (en) | 2019-03-19 |
Family
ID=65703549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821008181.2U Withdrawn - After Issue CN208621575U (en) | 2018-06-27 | 2018-06-27 | For detecting the evaporation confined chamber of harmful substance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208621575U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845082A (en) * | 2018-06-27 | 2018-11-20 | 东莞市升微机电设备科技有限公司 | For detecting the evaporation confined chamber of harmful substance |
| WO2020001177A1 (en) * | 2018-06-27 | 2020-01-02 | 东莞市升微机电设备科技有限公司 | Sealed chamber having adjustable volume and control method |
| CN111337625A (en) * | 2020-02-28 | 2020-06-26 | 同济大学 | Indoor detection device and detection method for various harmful gases in asphalt |
-
2018
- 2018-06-27 CN CN201821008181.2U patent/CN208621575U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845082A (en) * | 2018-06-27 | 2018-11-20 | 东莞市升微机电设备科技有限公司 | For detecting the evaporation confined chamber of harmful substance |
| WO2020001177A1 (en) * | 2018-06-27 | 2020-01-02 | 东莞市升微机电设备科技有限公司 | Sealed chamber having adjustable volume and control method |
| CN111337625A (en) * | 2020-02-28 | 2020-06-26 | 同济大学 | Indoor detection device and detection method for various harmful gases in asphalt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190319 Effective date of abandoning: 20190823 |
|
| AV01 | Patent right actively abandoned |