CN217111916U - Smoke and dust tester calibration equipment - Google Patents
Smoke and dust tester calibration equipment Download PDFInfo
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- CN217111916U CN217111916U CN202220777088.8U CN202220777088U CN217111916U CN 217111916 U CN217111916 U CN 217111916U CN 202220777088 U CN202220777088 U CN 202220777088U CN 217111916 U CN217111916 U CN 217111916U
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Abstract
The application discloses smoke and dust tester calibration equipment belongs to the check out test set field, has solved among the prior art portable direct reading smoke and dust tester and has not had relevant calibration equipment yet, to the quantity value of smoke and dust tester with trace to the source the problem that has caused very big influence. In the technical scheme, two sampling ports are respectively connected with a standard sampling fixed value system and an instrument to be calibrated, a dust generation system is arranged at a stable section of a wind tunnel, and a section, close to an air outlet, in the wind tunnel is provided with a fan; the two sampling ports are arranged in the working section of the wind tunnel; a plurality of rectifying devices are arranged in the wind tunnel, and the rectifying devices are arranged in the wind tunnel at intervals. The utility model discloses a smoke and dust tester calibration equipment carries out the calibration of equipment under the condition of simulation actual environment, has improved the accuracy of calibration.
Description
Technical Field
The utility model relates to a smoke and dust tester calibration equipment belongs to the check out test set field.
Background
The smoke and dust tester is a measuring equipment for testing fixed pollution source emission particulate matter concentration, it has portablely, can directly read, characteristics such as efficiency of software testing height, for the very big improvement efficiency of software testing of traditional weight method, along with the continuous development and promotion of detection technique, the smoke and dust tester has obtained the wide application in fixed pollution source particulate matter concentration detection, but although the continuous development of smoke and dust tester technique, at present, there is not relevant calibration equipment about portable direct reading smoke and dust tester, the quantity value and the traceability to the smoke and dust tester have led to the fact very big influence.
SUMMERY OF THE UTILITY MODEL
The utility model provides a smoke and dust tester calibration equipment carries out the calibration of equipment under the condition of simulation actual environment, has improved the accuracy of calibration.
The technical scheme adopted by the utility model is that the calibration equipment for the smoke dust tester comprises a dust generation system, a standard sampling constant value system, an instrument to be calibrated and two sampling ports, wherein the two sampling ports are respectively connected with the standard sampling constant value system and the instrument to be calibrated;
the wind tunnel comprises a wind tunnel, an air inlet is arranged at one end of the wind tunnel, an air outlet is arranged at the other end of the wind tunnel, a section of the wind tunnel close to the air inlet is a stable section, and a working section is arranged at the middle section of the wind tunnel; the dust generating system is arranged at the stable section of the wind tunnel, and a section of the wind tunnel, which is close to the air outlet, is provided with a fan; the two sampling ports are arranged in the working section of the wind tunnel; a plurality of rectifying devices are arranged in the wind tunnel, and the rectifying devices are arranged in the wind tunnel at intervals.
Preferably, in the calibration equipment for the smoke dust tester, the standard sampling fixed value system comprises a sampler and a dust collecting device, and the sampler is connected with the sampling port through the dust collecting device; and a dust collecting filter membrane is arranged in the dust collecting device.
Preferably, the calibration equipment for the smoke dust tester comprises a dust generator and a dust conveying device, wherein the dust generator is arranged outside the wind tunnel, one end of the dust conveying device is communicated with the dust generator, and the other end of the dust conveying device penetrates through the side wall of the wind tunnel and is arranged in the wind tunnel; the outlet of the dust conveying device is arranged towards the air inlet of the wind tunnel; the dust generator is a dry-method high-concentration dust generating device.
Preferably, the calibration equipment for the smoke dust tester is characterized in that the stabilizing section of the wind tunnel is provided with a first stabilizing section rectifying device and a second working section rectifying device, wherein the first stabilizing section rectifying device and the second stabilizing section rectifying device are arranged at intervals, and the second working section rectifying device are arranged at the working section of the wind tunnel.
Preferably, in the calibration equipment for the smoke dust tester, the end part of the dust conveying device is arranged between the first stabilizing section rectifying devices.
Preferably, the calibration device for the smoke dust tester is characterized in that a filter is arranged in the wind tunnel, and the filter is located between the working section of the wind tunnel and the fan.
Preferably, the calibration device for the smoke dust tester is characterized in that a standard pitot tube is arranged in the wind tunnel, and the standard pitot tube is located in the working section of the wind tunnel.
Preferably, in the calibration device for the smoke dust tester, the inner diameter of the wind tunnel working section is smaller than the inner diameter of the wind tunnel stabilizing section.
The application has the advantages that:
among the technical scheme of this application, dust generator is dry process dust aerosol generator, and dust generator produces the aerosol in the wind-tunnel, has simulated the operating condition of smoke and dust tester, gathers the filter membrane through standard weighing-appliance to the dust and weighs the definite value to carry out the calibration to the smoke and dust tester. And the dust aerosol is uniformly mixed by adopting the wind tunnel, so that a better calibration environment can be provided. Filter through the filter, prevent that the particulate matter from diffusing to the experimental environment in, the protection experimenter. The dust concentration at the sampling position can be controlled by adjusting the dust generating amount of the dust generator, and the calibration and assignment of the calibrated instrument under different concentrations are realized.
Drawings
Fig. 1 is a schematic structural diagram of the present application.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in the figure, the utility model relates to a calibration device for a smoke dust tester, which comprises a wind tunnel 1, a dust generation system, a standard sampling constant value system, an instrument 4 to be calibrated and two sampling ports 12, wherein the two sampling ports 12 are respectively connected with the standard sampling constant value system and the instrument 4 to be calibrated; one end of the wind tunnel 1 is an air inlet, the other end of the wind tunnel 1 is an air outlet, one section of the wind tunnel 1 close to the air inlet is a stable section, and the middle section of the wind tunnel 1 is a working section; the dust generating system is arranged at the stable section of the wind tunnel 1, and a section, close to the air outlet, in the wind tunnel 1 is provided with a fan 16; the two sampling ports 12 are arranged in the working section of the wind tunnel 1; a plurality of rectifying devices are arranged in the wind tunnel 1, and the rectifying devices are arranged in the wind tunnel 1 at intervals.
The direction of the arrow at a in the figure is the direction of the intake air flow of the wind tunnel 1. Dust generator 2 is dry process dust aerosol generator, and dust generator 2 produces the aerosol in wind-tunnel 1, has simulated the actual operating mode of smoke and dust tester, adopts wind-tunnel 1 to carry out the dust aerosol mixing, can provide better calibration environment, obtains better calibration accuracy. The dust concentration at the sampling position can be controlled by adjusting the dust generating amount of the dust generating system, and the calibration and assignment of the calibrated instrument under different concentrations are realized. The fan 16 is a centrifugal fan and can provide a working section in the wind tunnel 1 with a wind speed working condition of 0-30 m/s.
The standard sampling fixed value system comprises a sampler 3 and a dust collecting device 31, wherein the sampler 3 is connected with the sampling port 12 through the dust collecting device 31; and a dust collecting filter membrane is arranged in the dust collecting device 31.
In this embodiment, the sampler 3 is used for providing stable sampling power, and the dust collection device 31 is used for catching dust particles from the extracted airflow, and the dust adheres to the dust collection filter membrane, and the dust collection filter membrane is weighed and fixed through standard weighing equipment, so as to calibrate the smoke dust tester.
The dust generating system comprises a dust generator 2 and a dust conveying device 21, the dust generator 2 is arranged outside the wind tunnel 1, one end of the dust conveying device 21 is communicated with the dust generator 2, and the other end of the dust conveying device 21 penetrates through the side wall of the wind tunnel 1 and is arranged in the wind tunnel 1; the outlet of the dust conveying device 21 is arranged towards the air inlet of the wind tunnel 1.
The dust generator 2 is a dry high-concentration dust generating device and can ensure that 5-100mg/m3 dust aerosol is formed in the working section. The dust generator 2 can generate dust quantitatively, so that the dust concentration in the wind tunnel 1 is controllable, and the calibration of the smoke dust tester is convenient to carry out under different concentrations. Moreover, the dust concentration in the wind tunnel 1 is controllable, so that the instrument 4 to be calibrated can be conveniently calibrated and the value can be traced. The dust conveying device 21 is used for conveying quantitative dust into the wind tunnel 1, so that the stability of the concentration of the dust aerosol is ensured.
The stable section of the wind tunnel 1 is provided with two stable section rectifying devices 11 arranged at intervals, and the working section of the wind tunnel 1 is provided with a working section rectifying device two 14. And the front and the back of the interior of the wind tunnel 1 are provided with rectifying devices to ensure stable airflow at the working section.
The end of the dust conveying device 21 is arranged between the two first stabilizing segment rectifying devices 11. Through the front and the rear stabilizing section rectifying devices 11, the distribution uniformity of dust in the wind tunnel 1 can be increased, and the reliability of calibration is ensured.
A filter 15 is arranged in the wind tunnel 1, and the filter 15 is positioned between the working section of the wind tunnel 1 and the fan 16. Filter through filter 15, prevent that the particulate matter from diffusing to the experimental environment, the protection experimenter.
A standard pitot tube 13 is arranged in the wind tunnel 1, and the standard pitot tube 13 is positioned at the working section of the wind tunnel 1. The wind speed in the wind tunnel 1 is controlled and adjusted by adopting a standard pitot tube, so that the calibration is carried out in a specified environment, and the calibration accuracy is ensured.
The inner diameter of the working section of the wind tunnel 1 is smaller than that of the stable section of the wind tunnel 1.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also understand that the changes, modifications, additions or substitutions made within the scope of the present invention should belong to the protection scope of the present invention.
Claims (8)
1. A calibration device for a smoke dust tester comprises a dust generation system, a standard sampling constant value system, an instrument (4) to be calibrated and two sampling ports (12), wherein the two sampling ports (12) are respectively connected with the standard sampling constant value system and the instrument (4) to be calibrated; the method is characterized in that: the wind tunnel is characterized by further comprising a wind tunnel (1), wherein one end of the wind tunnel (1) is an air inlet, the other end of the wind tunnel (1) is an air outlet, one section of the wind tunnel (1) close to the air inlet is a stable section, and the middle section of the wind tunnel (1) is a working section; the dust generating system is arranged at a stable section of the wind tunnel (1), and a section, close to the air outlet, in the wind tunnel (1) is provided with a fan (16); the two sampling ports (12) are arranged in the working section of the wind tunnel (1); a plurality of rectifying devices are arranged in the wind tunnel (1), and the rectifying devices are arranged in the wind tunnel (1) at intervals.
2. The soot tester calibration apparatus according to claim 1, wherein: the standard sampling fixed value system comprises a sampler (3) and a dust collecting device (31), wherein the sampler (3) is connected with the sampling port (12) through the dust collecting device (31); and a dust collecting filter membrane is arranged in the dust collecting device (31).
3. The soot tester calibration apparatus according to claim 1, wherein: the dust generating system comprises a dust generator (2) and a dust conveying device (21), the dust generator (2) is arranged outside the wind tunnel (1), one end of the dust conveying device (21) is communicated with the dust generator (2), and the other end of the dust conveying device (21) penetrates through the side wall of the wind tunnel (1) and is arranged in the wind tunnel (1); an outlet of the dust conveying device (21) is arranged towards an air inlet of the wind tunnel (1); the dust generator (2) is a dry-method high-concentration dust generating device.
4. The soot tester calibration apparatus according to claim 3, wherein: the stable section of the wind tunnel (1) is provided with two stable section rectifying devices (11) which are arranged at intervals, and the working section of the wind tunnel (1) is provided with a working section rectifying device II (14).
5. The soot tester calibration apparatus according to claim 4, wherein: the end part of the dust conveying device (21) is arranged between the two first stabilizing section rectifying devices (11).
6. The soot tester calibration apparatus according to claim 1, wherein: a filter (15) is arranged in the wind tunnel (1), and the filter (15) is located between the working section of the wind tunnel (1) and the fan (16).
7. The soot tester calibration apparatus according to claim 1, wherein: a standard pitot tube (13) is arranged in the wind tunnel (1), and the standard pitot tube (13) is located in the working section of the wind tunnel (1).
8. The soot tester calibration apparatus according to claim 1, wherein: the inner diameter of the working section of the wind tunnel (1) is smaller than that of the stable section of the wind tunnel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220777088.8U CN217111916U (en) | 2022-04-02 | 2022-04-02 | Smoke and dust tester calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220777088.8U CN217111916U (en) | 2022-04-02 | 2022-04-02 | Smoke and dust tester calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217111916U true CN217111916U (en) | 2022-08-02 |
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ID=82578344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220777088.8U Active CN217111916U (en) | 2022-04-02 | 2022-04-02 | Smoke and dust tester calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217111916U (en) |
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2022
- 2022-04-02 CN CN202220777088.8U patent/CN217111916U/en active Active
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