CN203705333U - Smoke intensity measuring apparatus - Google Patents
Smoke intensity measuring apparatus Download PDFInfo
- Publication number
- CN203705333U CN203705333U CN201320879681.4U CN201320879681U CN203705333U CN 203705333 U CN203705333 U CN 203705333U CN 201320879681 U CN201320879681 U CN 201320879681U CN 203705333 U CN203705333 U CN 203705333U
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- venturi tube
- pipe
- outlet
- measuring apparatus
- sampling
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Abstract
The utility model discloses a smoke intensity measuring apparatus. The peripheral surface of each sampling pipe in the smoke intensity measuring apparatus is a conical surface, wherein the circumcircle diameter of the conical surface is directly or gradually reduced from an outlet to an inlet, a venturi tube communicated with an outlet of a gas guide pipe is arranged on a sampler, the outlet of the gas guide pipe is communicated to a throat or an inlet of the venturi tube, and a gas source device used for charging gas into the venturi tube is arranged on the inlet of the venturi tube. When the smoke intensity measuring apparatus is used, after the gas source device charges the gas from the inlet of the venturi tube, the throat and the inlet of the venturi tube form the negative pressure, so that smoke to be detected in each sampling pipe is charged into the venturi tube through the gas guide pipe, and is discharged out of the outlet of the venturi tube after being diluted through the gas charged by the gas source device; the sampling pipes can be axially inserted into the gas outlet pipe through the conical peripheral surfaces of the sampling pipes, so that the function of automatic positioning can be realized.
Description
Technical field
The utility model relates to a kind of measuring apparatus of smoke.
Background technology
At present, diesel engine measuring apparatus of smoke is introduced tail gas to measure in structure by sampling thief and sample lines, general employing in soft air entraining pipe or metal thin tube insertion gas outlet measured, or adopt complicated pipeline, these methods obtain certain effect, but in use still have following defect:
1. because the temperature of tail gas in gas exhaust duct is higher, can reach 600 DEG C, sampling head gos deep into gas exhaust duct, easily fractures and causes sampling head to lose efficacy with ablation;
2. sampling pipe is generally longer, and so easy dust stratification, and easy-clear not, have a strong impact on measurement accuracy, has the problem lagging behind simultaneously;
2. in order to ensure that the accuracy General Requirements sampling pipe of sampling is in the center of gas exhaust duct, the in the situation that of high temperature, be difficult to like this realize;
3. for ensureing accuracy of detection, national standard has regulation to the time of bleeding, the rate of air sucked in required of suction source device, and the loss of tail gas in long pipe runs and labyrinth is difficult to more greatly ensure the stable of tolerance;
4. in order to reduce the exhaust temperature entering in measuring instrument, need additional water-cooled or air cooling equipment, cause complex structure, cost is high.
Utility model content
The purpose of this utility model is to provide a kind of measuring apparatus of smoke, is intended to solve in prior art the large problem of smoke measurement difficulty in tail gas.
In order to realize above object, in the utility model, the technical scheme of measuring apparatus of smoke is as follows:
Measuring apparatus of smoke comprises sampling pipe and the upper sampling thief being communicated with by air entraining pipe of sampling pipe outlet for being coaxially inserted into gas outlet, the outer peripheral face of described sampling pipe is for from exporting to the direct or diminishing conical surface of circumscribed circle diameter of import, in described sampling thief, have with air entraining pipe and export the Venturi tube being communicated with, air entraining pipe outlet is communicated with on the tube wall of Venturi tube, and in the import of Venturi tube, is equipped with the compressed air source unit for be filled with gas to Venturi tube.
The inlet end face of described sampling pipe is inclined-plane.
Described air entraining pipe comprises that the straight length and the bridge joint that are communicated with the bend loss in sampling pipe outlet, are communicated with in Venturi tube throat are communicated with the corrugated tube between bend loss and straight length.
Compressed air source unit is to be installed in the air pump in Venturi tube import by joint.
On described compressed air source unit, be communicated with coaxial spaced and be inserted into the necking down pipe in Venturi tube import, the throat interval of the endpiece of necking down pipe and Venturi tube arranges.
In the outlet of described Venturi tube, be communicated with sound suppressor.
Described sound suppressor comprises the escape pipe of coaxial communication in Venturi tube outlet, in the periphery of escape pipe, is laid with outgassing micropore.
The removable sampling sheet that is fixed with in the outlet of described Venturi tube.
The endpiece of described sampling pipe is provided with the spacing convex shoulder on exhaust outlet for limit block.
In the utility model, the outer peripheral face of sampling pipe is for from exporting to the direct or diminishing conical surface of circumscribed circle diameter of import, sampling thief is provided with air entraining pipe and exports the Venturi tube being communicated with, air entraining pipe outlet is communicated with in the throat or import of Venturi tube, and in the import of Venturi tube, be equipped with the compressed air source unit for be filled with gas to Venturi tube, in use, compressed air source unit is filled with gas from the import of Venturi tube, the throat of Venturi tube and inflow point can form negative pressure, thereby by air entraining pipe by flue gas suction Venturi tube to be detected in sampling pipe, after the gas dilution being filled with by compressed air source unit again, discharge from the outlet of Venturi tube, and the taper outer peripheral face of sampling pipe can be convenient to it and be coaxially inserted in gas outlet, realize the effect of location automatically, therefore in the utility model, measuring apparatus of smoke has flue gas in the exhaust gas extraction of being convenient to pipe, be convenient to install, the advantage that installation accuracy is high, detection with smoke intensity in suitable flue gas is convenient accurately.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of sampling thief in Fig. 1.
Embodiment
The embodiment of flue gas measuring instrument in the utility model: as depicted in figs. 1 and 2, this flue gas measuring instrument comprises sampling thief 2, air entraining pipe and sampling pipe 6, wherein the outer peripheral face of sampling pipe 6 is from endpiece to the diminishing circular conical surface of entrance point diameter, convexes with the spacing convex shoulder of limit block on exhaust outlet on the outlet outer peripheral face of sampling pipe 6; Sampling thief 2 comprises the noise-abatement equipment 12 that is communicated with assembling in the compressed air source unit 1 that assembles in Venturi tube 10 in sampling pipe 6 outlet, Venturi tube 10 imports and Venturi tube 10 outlets by air entraining pipe, the outlet of air entraining pipe is communicated with on the adsorption orifice of offering on throat's tube wall of Venturi tube 10, and in the import of Venturi tube 10, be coaxially fitted with necking down pipe 9, the endpiece of necking down pipe 9 is disposed on Venturi tube 10 throats, and compressed air source unit 1 is to be installed in the air pump in Venturi tube 10 imports by joint 8, the outlet of compressed air source unit 1 is communicated with in the import of necking down pipe 9.
Noise-abatement equipment 12 comprises the escape pipe being coaxially connected in Venturi tube 10 outlets, on the tube wall of escape pipe, is laid with outgassing micropore.Between noise-abatement equipment 12 and Venturi tube 10, sandwiched is fixed with discoid sampling sheet 14, is embedded with annular filter paper 11 in the periphery of sampling sheet 14.
Air entraining pipe comprises that the bend loss 5 being communicated with in sampling pipe 6 outlets, straight length 4 and the bridge joint being communicated with in Venturi tube 10 throats are communicated with the corrugated tube 4 between bend loss 5 and straight length 4.
In the present embodiment, flue gas measuring instrument is a kind of smoke intensity sampling thief 2 easy for installation, simple in structure, utilize the taper outer peripheral face of sampling pipe 6 realize with gas outlet in the coaxial and impermeability problem of plug-in mounting, and utilize the injection noise reduction of Venturi tube 10 to realize indirect sampling and gas-cooled effect.Diesel Engine Exhaust Pipe 7 is in order to be beneficial to smoke evacuation and to reduce resistance, great majority adopt circular structure, utilize and insert oil production machine gas outlet 7 when interior when sampling pipe 6, can ensure that two pipes are coaxial on the one hand, the feature that can form on the other hand linear sealing, sampling pipe 6 adopts cone structure, and the center of sampling pipe 6 is sampling passage, so just ensure the center of sampling pipe 6 in gas outlet 7, ensured sampling precision.While utilizing pressurized air through Venturi tube 10, can form suction-operated as sampling power in throat, the adsorption orifice (being the throat of Venturi tube 10) of sampler is connected by air entraining pipe with sampling pipe 6.Absorption flow according to the adsorption orifice design of national regulation sampler is 310～1320 mL/s, sampler adopts double-venturi tube 10(Venturi tube 10 and necking down pipe 9) structure, compressed air source unit 1 is installed on sampler inflow point, and compressed air source unit 1 is realized sampling indirectly.Because the air mass flow of import place compression is much larger than sampling flow, two strands of gases mix in spout.Due to the variation of pressure, volume and flow velocity and internal heat conduction, radiation now mixed gas temperature far below the temperature of single tail gas, through actual measurement lower than national regulation+40 DEG C ± 10 regulation, the gas spraying is like this for can survey gas.Venturi tube 10 exit internal diameter 30 mm are filter paper sampling place, are designed with filter paper mounting structure.Rear end is micro silencer structure, plays the effect of eliminating the noise and reducing air-flow concussion.
In use, compressed air source unit 1 sucks clean gas and is blown in sampler, produce negative pressure at adsorption orifice place, gas to be measured in air entraining pipe is sucked, and clean gas and gas to be measured are at the interior combination cooling of Venturi tube 10, by filter paper sampling sheet 14, on filter paper sampling sheet 14, filter paper is installed, gas is by filter paper sampling sheet 14, and the carbon granules in exhaust just sticks on filter paper sampling sheet 14 and makes filter paper sampling sheet 14 dye the black sampling that completes, and the gas passing through is discharged from noise elimination structure.Complete sampling filter paper sampling sheet 14 and extract the exhaust smoke of putting into absorptance that photoelectric detection system utilizes cigarette trace on filter paper and be assessed as diesel engine out.
In the above-described embodiments, air entraining pipe is communicated with on throat's tube wall of Venturi tube, and in other embodiments, air entraining pipe also can be communicated with on the tube wall of Venturi tube inducer or outlet section.
Claims (9)
1. measuring apparatus of smoke, comprise sampling pipe and the upper sampling thief being communicated with by air entraining pipe of sampling pipe outlet for being coaxially inserted into gas outlet, it is characterized in that, the outer peripheral face of described sampling pipe is for from exporting to the direct or diminishing conical surface of circumscribed circle diameter of import, in described sampling thief, have with air entraining pipe and export the Venturi tube being communicated with, air entraining pipe outlet is communicated with on the tube wall of Venturi tube, and in the import of Venturi tube, is equipped with the compressed air source unit for be filled with gas to Venturi tube.
2. measuring apparatus of smoke according to claim 1, is characterized in that, the inlet end face of described sampling pipe is inclined-plane.
3. measuring apparatus of smoke according to claim 1, is characterized in that, described air entraining pipe comprises that the straight length and the bridge joint that are communicated with the bend loss in sampling pipe outlet, are communicated with in Venturi tube throat are communicated with the corrugated tube between bend loss and straight length.
4. measuring apparatus of smoke according to claim 1, is characterized in that, compressed air source unit is to be installed in the air pump in Venturi tube import by joint.
5. measuring apparatus of smoke according to claim 4, is characterized in that, is communicated with coaxial spaced and is inserted into the necking down pipe in Venturi tube import on described compressed air source unit, and the throat interval of the endpiece of necking down pipe and Venturi tube arranges.
6. according to the measuring apparatus of smoke described in any one in claim 1 to 5, it is characterized in that, in the outlet of described Venturi tube, be communicated with sound suppressor.
7. measuring apparatus of smoke according to claim 6, is characterized in that, described sound suppressor comprises the escape pipe of coaxial communication in Venturi tube outlet, in the periphery of escape pipe, is laid with outgassing micropore.
8. according to the measuring apparatus of smoke described in any one in claim 1 to 5, it is characterized in that the removable sampling sheet that is fixed with in the outlet of described Venturi tube.
9. according to the measuring apparatus of smoke described in any one in claim 1 to 5, it is characterized in that, the endpiece of described sampling pipe is provided with the spacing convex shoulder on exhaust outlet for limit block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879681.4U CN203705333U (en) | 2013-12-30 | 2013-12-30 | Smoke intensity measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879681.4U CN203705333U (en) | 2013-12-30 | 2013-12-30 | Smoke intensity measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705333U true CN203705333U (en) | 2014-07-09 |
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ID=51055754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320879681.4U Expired - Fee Related CN203705333U (en) | 2013-12-30 | 2013-12-30 | Smoke intensity measuring apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203705333U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547768A (en) * | 2016-01-04 | 2016-05-04 | 梅思安(中国)安全设备有限公司 | Sampling probe with self-cleaning function |
| CN107478774A (en) * | 2017-07-31 | 2017-12-15 | 浙江新寰科环保科技股份有限公司 | A kind of gas automatic monitoring system and its monitoring method |
| CN109632438A (en) * | 2018-12-19 | 2019-04-16 | 华测检测认证集团股份有限公司 | The fog water content of Atmospheric particulates sampling membrane cleaning equipment with heat insulation function |
| CN110285457A (en) * | 2019-06-26 | 2019-09-27 | 杭州老板电器股份有限公司 | A kind of kitchen ventilator that smoking effect is good |
| CN114635477A (en) * | 2022-04-21 | 2022-06-17 | 汤秀霞 | Full-automatic pneumatic water supply equipment |
| CN114965895A (en) * | 2022-05-31 | 2022-08-30 | 南京港能环境科技有限公司 | Integrated gas concentration detection device |
-
2013
- 2013-12-30 CN CN201320879681.4U patent/CN203705333U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547768A (en) * | 2016-01-04 | 2016-05-04 | 梅思安(中国)安全设备有限公司 | Sampling probe with self-cleaning function |
| CN105547768B (en) * | 2016-01-04 | 2018-03-16 | 梅思安(中国)安全设备有限公司 | sampling probe with self-cleaning function |
| CN107478774A (en) * | 2017-07-31 | 2017-12-15 | 浙江新寰科环保科技股份有限公司 | A kind of gas automatic monitoring system and its monitoring method |
| CN109632438A (en) * | 2018-12-19 | 2019-04-16 | 华测检测认证集团股份有限公司 | The fog water content of Atmospheric particulates sampling membrane cleaning equipment with heat insulation function |
| CN110285457A (en) * | 2019-06-26 | 2019-09-27 | 杭州老板电器股份有限公司 | A kind of kitchen ventilator that smoking effect is good |
| CN114635477A (en) * | 2022-04-21 | 2022-06-17 | 汤秀霞 | Full-automatic pneumatic water supply equipment |
| CN114965895A (en) * | 2022-05-31 | 2022-08-30 | 南京港能环境科技有限公司 | Integrated gas concentration detection device |
| CN114965895B (en) * | 2022-05-31 | 2024-03-26 | 南京港能环境科技有限公司 | Integrated gas concentration detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20181230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |