CN205374405U - VOC on -line measuring device that can be used to laboratory or special place - Google Patents
VOC on -line measuring device that can be used to laboratory or special place Download PDFInfo
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- CN205374405U CN205374405U CN201521120727.XU CN201521120727U CN205374405U CN 205374405 U CN205374405 U CN 205374405U CN 201521120727 U CN201521120727 U CN 201521120727U CN 205374405 U CN205374405 U CN 205374405U
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- air chamber
- voc
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- sensor
- line measuring
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Abstract
The utility model discloses a VOC on -line measuring device that can be used to laboratory or special place belongs to an air detection device, which comprises a housin, install the air chamber on the casing, the sensor is still installed to air chamber and outside environmental facies intercommunication on the casing, the probe of sensor extends to the inside of air chamber, the sensor is the access circuit board still, the circuit board inserts alarm device. Through set up independent air chamber in detection device, gather by carrying out sensor signal in the space less relatively in the sensor follow air chamber, and then promoted gas concentration detection's accuracy to the gas strength can carry out on -line measuring, and triggered alarm device reports to the police when concentration surpasss the upper limit value, reminds indoor personnel or the processing of directly ventilating, simultaneously the utility model provides a VOC on -line measuring device that can be used to laboratory or special place simple structure especially is suitable for and uses in the laboratory, does and installs and use in other indoor places, and the range of application is wide.
Description
Technical field
This utility model relates to a kind of air detecting device, and in particular, this utility model relates generally to a kind of VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations.
Background technology
At present, VOC(VOC volatileorganiccompounds on the market) detecting device carries out VOC detection just in air environmental pollution mostly, Detection accuracy is on the low side, and sensor life-time is short, buy and maintenance cost is higher, functionally cannot meet the VOC testing requirement in this kind of special environment of laboratory, thus be necessary to carry out for the structure of this kind of detecting device studying and improving.
Utility model content
One of the purpose of this utility model is in that for above-mentioned deficiency, a kind of VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations is provided, to expect the VOC detection solving detecting device similar in prior art suitable in general context is polluted, Detection accuracy is low, is unsuitable for carrying out in the lab the technical problems such as VOC detection.
For solving above-mentioned technical problem, this utility model by the following technical solutions:
A kind of VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations provided by the utility model, including housing, described housing is provided with air chamber, described air chamber is connected with external environment condition, described housing is also equipped with sensor, the probe of described sensor extends to the inside of air chamber, described sensor also accesses circuit board, described circuit board accesses alarm device, for the gas concentration signal collected being transmitted to circuit board by sensor, circuit board gas concentration signal is converted to the signal of telecommunication and transmits to alarm device.
As preferably, further technical scheme is: at least include signal receiving module, signal conversion module and signal output module on described circuit board, described signal conversion module is respectively connected to signal receiving module and signal output module, described signal output module accesses alarm device by RS485 communication bus, and described signal receiving module accesses sensor.
Further technical scheme is: air chamber is provided with multiple hole, and the inner chamber of described air chamber is connected with external environment condition by multiple holes.
Further technical scheme is: described air chamber is connected with air pump by pipeline, for being delivered in the inner chamber of air chamber by outside air by air pump.
Further technical scheme is: be also equipped with display module on described housing, and described display module accesses the signal output module on circuit board, displays for the signal of telecommunication after signal conversion module being changed by display module.
Further technical scheme is: described air chamber is by being threadably mounted on housing, and described alarm device is arranged on the top of housing.
Further technical scheme is: the material of described housing and air chamber is aluminium alloy.
Compared with prior art, one of the beneficial effects of the utility model are: by arranging independent air chamber in detecting device, from space relatively small in air chamber, transducing signal collection is carried out by sensor, and then improve the accuracy of gas concentration detection, and gas concentration can carry out on-line checking, and triggering alarm device is reported to the police when concentration is beyond higher limit, remind indoor occupant or be made directly ventilation process, a kind of VOC on-line measuring device simple in construction that can be used for laboratory or Code in Hazardous Special Locations provided by the utility model simultaneously, it is especially suitable in laboratory and uses, also can install and use in other indoor place, range of application is wide.
Accompanying drawing explanation
Fig. 1 is the structural representation for one embodiment of this utility model is described；
Fig. 2 is for the board structure of circuit schematic block diagram in another embodiment of this utility model is described；
In figure, 1 be housing, 2 be air chamber, 3 be alarm device, 4 for display module.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further elaborated.
With reference to shown in Fig. 1, an embodiment of the present utility model is a kind of VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations, including housing 1, this housing 1 is provided with air chamber 2, and air chamber 2 need to be connected with external environment condition, being also equipped with sensor on housing 1, the probe of this sensor extends to the inside of air chamber 2, in addition, sensor also accesses circuit board, and circuit board accesses alarm device 3, as shown in Figure 1, this alarm device 3 is preferably mounted on the top of housing 1；Its effect is to be transmitted the gas concentration signal collected to circuit board by sensor, the necessary module on circuit board gas concentration signal is converted to the signal of telecommunication and transmits to alarm device 3；Aforesaid air chamber 2 can collect room air by the mode of gas natural diffuseness or pumping, and by the VOC concentration in sensor acquisition air.In using, inventor contemplates that air chamber 2 long-term with there is VOC gas contact and easily receive corrosion, therefore have employed the high-strength aluminum profile of military project quality at the trial and be processed into, abrasion-proof corrosion-proof is turbid, it is applicable to complicated severe industrial environment, it is ensured that the accuracy that sensor is monitored in real time；In addition, above-mentioned housing 1 also can adopt housing to adopt ADC12 aluminum alloy material to be processed into, wear resistant corrosion resistant.
Further, in order to easy for installation, air chamber 2 and housing 1 can adopt detachable connection, it is preferable to arrange, on the air chamber 2 and housing 1 of aluminum alloy material, the external screw thread and female thread that cooperate, and then by air chamber 2 by being threadably mounted on housing 1.
In the present embodiment, by arranging independent air chamber 2 in detecting device, from space relatively small in air chamber 2, transducing signal collection is carried out by sensor, and then improve the accuracy of gas concentration detection, and gas concentration can carry out on-line checking, and triggering alarm device is reported to the police when concentration is beyond higher limit, remind indoor occupant or be made directly ventilation process.
Shown in Fig. 2, at this utility model for solving in the embodiment that technical problem is more highly preferred to, for adapting to logical judgment and the alarm principle of the alarm device of routine, foregoing circuit plate is preferably provided signal receiving module, signal conversion module and signal output module, and signal conversion module is respectively connected to signal receiving module and signal output module, signal output module accesses alarm device 3 by RS485 communication bus, and signal receiving module accesses sensor；And then the analogue signal that sensor exports can be converted to digital data transmission in alarm device 3 by signal conversion module, alarm device 3 has then been preset the threshold value of VOC gas concentration, namely when after digital data transmission to alarm device 3, control module in alarm device by the VOC gas concentration value in current digital signal compared with predetermined threshold value, when currency occurring more than predetermined threshold value, namely triggering alarm device to report to the police, the mode of warning may select sound and light alarm；When necessary, also can the air exhausting device of peripheral hardware be accessed in alarm device, namely when aforesaid currency is more than predetermined threshold value, namely air exhausting device is triggered by alarm device, namely indoor are taken a breath after starting by air exhausting device, to reduce the VOC gas concentration of indoor, and promote the indoor VOC automaticity detecting and removing.
Further, for the VOC gas concentration making indoor occupant to pass through in detecting device observation ward in real time, display module 4 also can be installed on housing 1, and display module 4 is accessed the signal output module on circuit board, display for the signal of telecommunication after signal conversion module being changed by display module 4；This display module 4 and circuit board can be screwed in on the riveting post in housing 1.
Preferably, above-mentioned sensor preferably employs imported with original packaging high-performance PID principle sensor, and service life is up to more than 2-3；The automatic protection functions that anti-high concentrations of gas impacts, has good interference free performance, and by the analogue signal of three-wire system 4～20mA output collection；Housing 1 is provided with two long cable section of ingoing line mouths, facilitates device to install at the scene.
On the other hand, as mentioned here above, above-mentioned air chamber 2 can collect room air by the mode of gas natural diffuseness or pumping, as adopt natural diffuseness mode time, multiple hole can be provided with on air chamber 2, make the inner chamber of air chamber 2 be connected with external environment condition by multiple holes.As adopted the mode of pumping, then need to be connected air chamber 2 with air pump by pipeline, for outside air being delivered in the inner chamber of air chamber 2 by air pump, aforesaid air pump can adopt the mode of switch automatically, namely start within the unit interval and indoor air is delivered in air chamber 2, then turn off, after the unit interval, be again started up conveying room air to air chamber 2, so circulate.
Detecting device in actual use, is installed in laboratory by the above-mentioned preferred embodiment of this utility model, and the air in air chamber 1 is collected by the mode of natural diffuseness；VOC concentration in air in air chamber 2 is acquired by or unit interval real-time by sensor, and the signal receiving module transmitted to circuit board, signal receiving module transmits a signal to signal conversion module, signal conversion module converts analog signals into digital signal, by signal output module by RS485 bus transfer to alarm device and display module, the VOC concentration value that display module backlight display current sensor collects in air chamber 2 in air, alarm device then carries out logical judgment according to the concentration value in digital signal, after the result meeting logical judgment meets trigger condition, alarm activation carries out sound and light alarm, the personnel in laboratory are reminded to carry out Air exhaust；In another kind of situation, when being mounted with automatic exhausting equipment in laboratory, exhaust equipment can be triggered automatic, indoor are carried out automatic exhausting, until below the VOC concentration value that sensor collects in air chamber 2 predetermined threshold value that is reduced to alarm device or other standard value time, exhaust equipment is out of service.
Than that described above, it can further be stated that " embodiment ", " another embodiment ", " embodiment " spoken of in this manual etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and include at least one embodiment that the application generality describes.Multiple local appearance statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, it is understood that when describing a specific features, structure or feature in conjunction with any embodiment, what advocate is also drop in scope of the present utility model to realize this feature, structure or feature in conjunction with other embodiments.
Although reference be made herein to this utility model is described by multiple explanatory embodiment of the present utility model, but, should be appreciated that, those skilled in the art can be designed that a lot of other amendments and embodiment, and these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More specifically, disclosure, drawings and claims scope in, it is possible to building block and/or layout to theme composite configuration carry out multiple modification and improvement.Except the modification that building block and/or layout are carried out and improvement, to those skilled in the art, other purposes also will be apparent from.
Claims (7)
1. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations, including housing (1), it is characterized in that: described housing (1) is provided with air chamber (2), described air chamber (2) is connected with external environment condition, described housing is also equipped with sensor on (1), the probe of described sensor extends to the inside of air chamber (2), described sensor also accesses circuit board, described circuit board accesses alarm device (3), for the gas concentration signal collected being transmitted to circuit board by sensor, by circuit board, gas concentration signal is converted to the signal of telecommunication to transmit to alarm device (3).
2. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations according to claim 1, it is characterized in that: described circuit board at least includes signal receiving module, signal conversion module and signal output module, described signal conversion module is respectively connected to signal receiving module and signal output module, described signal output module accesses alarm device (3) by RS485 communication bus, and described signal receiving module accesses sensor.
3. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations according to claim 1 and 2, it is characterised in that: air chamber (2) is provided with multiple hole, and the inner chamber of described air chamber (2) is connected with external environment condition by multiple holes.
4. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations according to claim 1 and 2, it is characterised in that: described air chamber (2) is connected with air pump by pipeline, for being delivered in the inner chamber of air chamber (2) by outside air by air pump.
5. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations according to claim 1, it is characterized in that: described housing (1) is also equipped with display module (4), described display module (4) accesses the signal output module on circuit board, displays for the signal of telecommunication after signal conversion module being changed by display module (4).
6. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations according to claim 1, it is characterised in that: described air chamber (2) is by being threadably mounted on housing (1), and described alarm device (3) is arranged on the top of housing (1).
7. the VOC on-line measuring device that can be used for laboratory or Code in Hazardous Special Locations according to claim 1 or 6, it is characterised in that: the material of described housing (1) and air chamber (2) is aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120727.XU CN205374405U (en) | 2015-12-31 | 2015-12-31 | VOC on -line measuring device that can be used to laboratory or special place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120727.XU CN205374405U (en) | 2015-12-31 | 2015-12-31 | VOC on -line measuring device that can be used to laboratory or special place |
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| Publication Number | Publication Date |
|---|---|
| CN205374405U true CN205374405U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521120727.XU Active CN205374405U (en) | 2015-12-31 | 2015-12-31 | VOC on -line measuring device that can be used to laboratory or special place |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467087A (en) * | 2015-12-31 | 2016-04-06 | 南京诺丹工程技术有限公司 | VOC online detection device applied to laboratory or special occasions |
| CN106289394A (en) * | 2016-08-04 | 2017-01-04 | 苏州云白环境设备股份有限公司 | A kind of Wearable real time environment gas controlling device and monitoring method thereof |
-
2015
- 2015-12-31 CN CN201521120727.XU patent/CN205374405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467087A (en) * | 2015-12-31 | 2016-04-06 | 南京诺丹工程技术有限公司 | VOC online detection device applied to laboratory or special occasions |
| CN106289394A (en) * | 2016-08-04 | 2017-01-04 | 苏州云白环境设备股份有限公司 | A kind of Wearable real time environment gas controlling device and monitoring method thereof |
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