CN203231883U - Multi channel air filtration system field test bench - Google Patents
Multi channel air filtration system field test bench Download PDFInfo
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- CN203231883U CN203231883U CN2013202124442U CN201320212444U CN203231883U CN 203231883 U CN203231883 U CN 203231883U CN 2013202124442 U CN2013202124442 U CN 2013202124442U CN 201320212444 U CN201320212444 U CN 201320212444U CN 203231883 U CN203231883 U CN 203231883U
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Abstract
The utility model discloses a multi channel air filtration system field test bench which comprises four air channels, a particle counter, a diluter, a vacuum pump, a flow meter, a three-way valve, a computer control end and a PLC module. Each air channel respectively comprises a fan, an air pipe, a flow sensor, four to-be-tested filter installation frames which are respectively used for the installation of a to-be-tested filter and are successively arranged at intervals and five particle counting sampling probes. The computer control end warns an operator to mediate the flow of the flow meter according to the air flow which is acquired by each flow sensor in each air pipe, so that the flow rates of the air flows which flow into the particle counter sampling probes and the air pipes and pass through the filter are same. The particle counter measures the number of particles in sampled air flows and transmits measurement results to the computer control end to calculate the filtration efficiency of the filter. The multi channel air filtration system field test bench can completely simulate field use conditions, realizes isokinetic sampling, and has the advantages of convenient test process and control and high test result accuracy.
Description
Technical field
The utility model relates to a kind of hyperchannel air filtering system on-the-spot test platform.
Background technology
General ventilation is to carry out according to its test result in the ASHRAE laboratory with the efficient classification of filtrator, but because the difference of actual service conditions causes general the ventilation often all not reach the test performance in ASHRAE laboratory in actual use with filtrator.Therefore, the user need understand general ventilation with the level of efficiency of the on-the-spot operation of filtrator, will carry out efficiency test to the filtrator in using.
Present general method of testing is: the hand-held corpuscular counter of operating personnel is gathered population in the upstream and downstream of filtrator respectively, calculates the filtration efficiency of filtrator then.But there is following shortcoming in this kind method:
1. want to sample according to the requirement of ASHRAE Guideline 26-2008 fully, operating personnel need repeatedly pass in and out the upstream and downstream of fillter section, operate very inconvenient;
2. flow through the air-flow concentration of filtrator when big, filtrator upstream and downstream particle concentration exceeds the corpuscular counter count limit, causes the result inaccurate;
3. because there is turbulent flow in air-flow in the air-conditioning box, can not guarantee that the particle concentration of sampled point is representative, so will guarantee accuracy, just require to gather the particle concentration values at a lot of points, calculating mean value then, test and data processing work amount are all bigger;
4. because the uncertainty of air-conditioning box actual motion wind speed, can't guarantee during test that corpuscular counter thief hatch wind speed is consistent with the air-conditioning box sectional wind velocity, can not guarantee that namely when corpuscular counter carries out the particle collection be the isokinetic sampling process, must cause the result of particle counting inaccurate like this.
When 5. sampling, operating personnel are in the air-flow, air-flow is produced disturb on the one hand, increase particle concentration in the air-flow on the other hand, cause measurement result to produce deviation.
Summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of hyperchannel air filtering system on-the-spot test platform, and the simulated field service condition realizes isokinetic sampling fully, and not only test process and control are convenient, and test result precision height.
The utility model for the technical scheme that solves its technical matters and adopt is:
A kind of hyperchannel air filtering system on-the-spot test platform, it has four air channels, corpuscular counter, diluter, vacuum pump, flowmeter, T-valve, computer control end and PLC module, each air channel comprises blower fan respectively, airduct, flow sensor, four be respectively applied to install treat the side filtrator and arrange at interval successively treat side filtrator installation frame and five particle counting sampling probes, to placing described four to treat that the filtrator to be measured on the side filtrator installation frame blows respectively, described flow sensor is installed in the described airduct described blower fan and the air flow rate of gathering in this airduct is delivered a letter to PLC module and computer control end by airduct;
Five particle counting sampling probes are installed on four upstream and downstreams for the treatment of side filtrator installation frame respectively, and these five particle counting sampling probes are communicated to the entrance point of T-valve respectively by sampling conduit, and the sampling conduit in these five particle counting sampling probe correspondences is respectively equipped with for the logical switch valve that closes of control sampling conduit in addition; One endpiece of T-valve is communicated with flowmeter and vacuum pump successively by pipeline, and the pipeline between flowmeter and vacuum pump is provided with the second switch valve; Another endpiece of T-valve is communicated with diluter and corpuscular counter successively by pipeline, and the pipeline between T-valve and diluter is provided with the 3rd switch valve;
Five particle counting sampling probes are gathered the air-flow of its corresponding position respectively, a part of air-flow in this sampling air flow flows into corpuscular counter after the diluter dilution, another part air-flow is discharged behind flowmeter and second switch valve inflow vacuum pump, and the flow that the computer control end reminds operating personnel to reconcile flowmeter according to the air flow rate in the airduct of the flow sensor collection that receives makes in the airduct that the flow velocity that flows into the corpuscular counter sampling probe and described flow sensor gather the air-flow velocity by filtrator identical, to realize isokinetic sampling; Described corpuscular counter is to flowing into population in the sampling air flow in it and measure and measurement result being transferred to the computer control end, and the computer control end calculates the filtration efficiency of filtrator according to the population of the filtrator upstream and downstream to be measured that receives.
As further improvement of the utility model, also be provided with Temperature Humidity Sensor, five differential pressure pickups and six pressure reduction sampling probes in described each air channel, described Temperature Humidity Sensor is installed in the airduct in described each air channel; The pressure reduction sampling probe is installed on the upstream and downstream for the treatment of side filtrator installation frame in each air channel, and connect with differential pressure pickup between per two pressure reduction sampling probes, differential pressure pickup is transferred to PLC module and computer control end with the signal of the pressure reduction sampling probe collection of reception.
As further improvement of the utility model, owe in described every group of air channel and to be respectively equipped with one the 3rd filtrator, the 3rd filtrator is communicated with described T-valve one end by pipeline, and the pipeline between the 3rd filtrator and T-valve is provided with the 5th switch valve; The gas outlet end of described vacuum pump is communicated with one second filtrator; Pick out a branch road on the pipeline between described the 3rd switch valve and the diluter and connect one first filtrator, and be provided with the 4th switch valve at this branch road, pick out one second branch road on the pipeline between the 4th switch valve and first filtrator and be connected on the pipeline between second switch valve and the vacuum pump, and be provided with the 6th switch valve at this second branch road.
As further improvement of the utility model, described blower fan is frequency conversion fan, also is provided with frequency converter and provides electric power control to this frequency conversion fan, and this this frequency converter is messaging in described PLC module.
The beneficial effects of the utility model are: by gas flow and the wind speed in the real-time monitoring filtrator to be measured, and regulate by flowmeter, making and entering corpuscular counter is measured air-flow and the power such as air-flow realization of filtrator reality, thereby guarantees the precision of test result.In addition, arranging of multi units tube road can be selected as required, the degree of convenience of the use of increase.Simultaneously, be provided with the pipeline self-cleaning filter and realize pipeline in the measured pipeline and the cleaning of corpuscular counter, phase mutual interference when avoiding repeatedly measuring; Also be provided with the discharge filter of vacuum pump, the air of extracting out is filtered, avoid the pollution to other components and parts.
Description of drawings
Fig. 1 is the utility model structural representation.
By reference to the accompanying drawings, make the following instructions:
1---blower fan 2---airduct
3---flow sensor 4---Temperature Humidity Sensor
5---differential pressure pickup 6---PLC module
7---computer control end 8---particle counting sampling probe
9---switch valve 10---T-valve
11---flowmeter 12---second switch valve
13---the 3rd switch valves 14---the 4th switch valve
15---first filtrators 16---the 6th switch valve
17---vacuum pumps 18---, second filtrator
19---diluter 20---corpuscular counter
21---the 5th switch valves 22---the 3rd filtrator
23---frequency converters 101---are treated side filtrator installation frame
Embodiment
By reference to the accompanying drawings; the utility model is elaborated; but protection domain of the present utility model is not limited to following embodiment, and namely the simple equivalent of being done with the utility model claim and description in every case changes and modifies, and all still belongs within the utility model patent covering scope.
As shown in Figure 1, a kind of hyperchannel air filtering system on-the-spot test platform, it has four air channels, corpuscular counter 20, diluter 19, vacuum pump 17, flowmeter 11, T-valve 10, computer control end 7 and PLC module 6, each air channel comprises blower fan 1 respectively, airduct 2, flow sensor 3, four be respectively applied to install treat the side filtrator and arrange at interval successively treat side filtrator installation frame 101 and five particle counting sampling probes 8, to placing described four to treat that the filtrator to be measured on the side filtrator installation frame blows respectively, described flow sensor is installed in the described airduct described blower fan and the air flow rate of gathering in this airduct is delivered a letter to PLC module and computer control end by airduct;
Five particle counting sampling probes are installed on four upstream and downstreams for the treatment of side filtrator installation frame respectively, and these five particle counting sampling probes are communicated to the entrance point of T-valve respectively by sampling conduit, and the sampling conduit in these five particle counting sampling probe correspondences is respectively equipped with for the logical switch valve 9 that closes of control sampling conduit in addition; One endpiece of T-valve is communicated with flowmeter and vacuum pump successively by pipeline, and the pipeline between flowmeter and vacuum pump is provided with second switch valve 12; Another endpiece of T-valve is communicated with diluter and corpuscular counter successively by pipeline, and the pipeline between T-valve and diluter is provided with the 3rd switch valve 13;
Five particle counting sampling probes are gathered the air-flow of its corresponding position respectively, a part of air-flow in this sampling air flow flows into corpuscular counter after the diluter dilution, another part air-flow is discharged behind flowmeter and second switch valve inflow vacuum pump, and the flow that the computer control end reminds operating personnel to reconcile flowmeter according to the air flow rate in the airduct of the flow sensor collection that receives makes in the airduct that the flow velocity that flows into the corpuscular counter sampling probe and described flow sensor gather the air-flow velocity by filtrator identical, to realize isokinetic sampling; Described corpuscular counter is to flowing into population in the sampling air flow in it and measure and measurement result being transferred to the computer control end, and the computer control end calculates the filtration efficiency of filtrator according to the population of the filtrator upstream and downstream to be measured that receives.
Preferably, also be provided with Temperature Humidity Sensor 4, five differential pressure pickups 5 and six pressure reduction sampling probes 24 in described each air channel, described Temperature Humidity Sensor is installed in the airduct in described each air channel; The pressure reduction sampling probe is installed on the upstream and downstream for the treatment of side filtrator installation frame in each air channel, and connect with differential pressure pickup between per two pressure reduction sampling probes, differential pressure pickup is transferred to PLC module and computer control end with the signal of the pressure reduction sampling probe collection of reception.
Preferably, owe in described every group of air channel and to be respectively equipped with one the 3rd filtrator, 22, the three filtrators and to be communicated with described T-valve one end by pipeline, and the pipeline between the 3rd filtrator and T-valve is provided with the 5th switch valve 21; The gas outlet end of described vacuum pump is communicated with one second filtrator 18; Pick out a branch road on the pipeline between described the 3rd switch valve and the diluter and connect one first filtrator 15, and be provided with the 4th switch valve 14 at this branch road, pick out one second branch road on the pipeline between the 4th switch valve and first filtrator and be connected on the pipeline between second switch valve and the vacuum pump, and be provided with the 6th switch valve 16 at this second branch road.
Preferably, described blower fan is frequency conversion fan, also is provided with 23 pairs of these frequency conversion fans of frequency converter electric power control is provided, and this this frequency converter is messaging in described PLC module.
Before the work, open blower fan earlier, corpuscular counter is carried out the school null check, the 3rd switch valve 13, the 6th switch valve 16 are closed, open corpuscular counter, this moment, air-flow flowed into corpuscular counter through first filtrator 15 through the 4th switch valve 14, diluter, and corpuscular counter is carried out self-cleaning.Can open simultaneously the 5th valve and the 3rd filtrator the employing pipeline at corpuscular counter sampling probe place is carried out self-cleaning, after self-cleaning is intact, can selects to close corresponding switch valve and can normally use.
When work, blower fan is opened, flow sensor, Temperature Humidity Sensor start, the computer control end shows air flow rate and humiture and the power of fan value that flows into the air channel, the computer control end reminds operating personnel to adjust the flowmeter flow to desired value according to the air channel air flow rate that shows, flows into the flow size of vacuum pump air-flow with control.By the air flow rate of control inflow vacuum pump, realization flows into adopts the flow velocity of probe consistent with the air channel cross-sectional flow, thus the realization isokinetic sampling, the accuracy of assurance measurement result.Particle counter measuring flows into the particle concentration of air-flow, and numerical value is transferred to automatically controlled control end, calculates filter clogging effect value to be measured by the computer control end.
Claims (4)
1. hyperchannel air filtering system on-the-spot test platform, it is characterized in that: described hyperchannel air filtering system on-the-spot test platform has four air channels, corpuscular counter (20), diluter (19), vacuum pump (17), flowmeter (11), T-valve (10), computer control end (7) and PLC module (6)
Each air channel comprise respectively blower fan (1), airduct (2), flow sensor (3), four be respectively applied to install treat the side filtrator and arrange at interval successively treat side filtrator installation frame (101) and five particle counting sampling probes (8), to placing described four to treat that the filtrator to be measured on the side filtrator installation frame blows respectively, described flow sensor is installed in the described airduct described blower fan and the air flow rate of gathering in this airduct is delivered a letter to PLC module and computer control end by airduct;
Five particle counting sampling probes are installed on four upstream and downstreams for the treatment of side filtrator installation frame respectively, and these five particle counting sampling probes are communicated to the entrance point of T-valve respectively by sampling conduit, and the sampling conduit in these five particle counting sampling probe correspondences is respectively equipped with for the logical switch valve (9) that closes of control sampling conduit in addition; One endpiece of T-valve is communicated with flowmeter and vacuum pump successively by pipeline, and the pipeline between flowmeter and vacuum pump is provided with second switch valve (12); Another endpiece of T-valve is communicated with diluter and corpuscular counter successively by pipeline, and the pipeline between T-valve and diluter is provided with the 3rd switch valve (13);
Five particle counting sampling probes are gathered the air-flow of its corresponding position respectively, a part of air-flow in this sampling air flow flows into corpuscular counter after the diluter dilution, another part air-flow is discharged after flowmeter and second switch valve flow into vacuum pump, and the computer control end flow of reminding operating personnel to reconcile flowmeter according to the air flow rate in the airduct of the flow sensor collection that receives makes in the airduct that the flow velocity that flows into the corpuscular counter sampling probe and described flow sensor gather the air-flow velocity by filtrator identical; Described corpuscular counter is to flowing into population in the sampling air flow in it and measure and measurement result being transferred to the computer control end, and the computer control end calculates the filtration efficiency of filtrator according to the population of the filtrator upstream and downstream to be measured that receives.
2. hyperchannel air filtering system on-the-spot test platform according to claim 1, it is characterized in that: also be provided with Temperature Humidity Sensor (4), five differential pressure pickups (5) and six pressure reduction sampling probes (24) in described each air channel, described Temperature Humidity Sensor is installed in the airduct in described each air channel; The pressure reduction sampling probe is installed on the upstream and downstream for the treatment of side filtrator installation frame in each air channel, and connect with differential pressure pickup between per two pressure reduction sampling probes, differential pressure pickup is transferred to PLC module and computer control end with the signal of the pressure reduction sampling probe collection of reception.
3. hyperchannel air filtering system on-the-spot test platform according to claim 1 and 2, it is characterized in that: owe in described every group of air channel and be respectively equipped with one the 3rd filtrator (22), the 3rd filtrator is communicated with described T-valve one end by pipeline, and the pipeline between the 3rd filtrator and T-valve is provided with the 5th switch valve (21); The gas outlet end of described vacuum pump is communicated with one second filtrator (18); Pick out a branch road on the pipeline between described the 3rd switch valve and the diluter and connect one first filtrator (15), and be provided with the 4th switch valve (14) at this branch road, pick out one second branch road on the pipeline between the 4th switch valve and first filtrator and be connected on the pipeline between second switch valve and the vacuum pump, and be provided with the 6th switch valve (16) at this second branch road.
4. hyperchannel air filtering system on-the-spot test platform according to claim 1 and 2, it is characterized in that: described blower fan is frequency conversion fan, also is provided with frequency converter (23) and provides electric power control to this frequency conversion fan, this this frequency converter is messaging in described PLC module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202124442U CN203231883U (en) | 2013-04-25 | 2013-04-25 | Multi channel air filtration system field test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202124442U CN203231883U (en) | 2013-04-25 | 2013-04-25 | Multi channel air filtration system field test bench |
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| CN203231883U true CN203231883U (en) | 2013-10-09 |
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| CN2013202124442U Expired - Lifetime CN203231883U (en) | 2013-04-25 | 2013-04-25 | Multi channel air filtration system field test bench |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142314A (en) * | 2014-07-03 | 2014-11-12 | 苏州宏瑞净化科技有限公司 | Multichannel dust detector |
| CN112285002A (en) * | 2020-12-23 | 2021-01-29 | 北京核信锐视安全技术有限公司 | Filter efficiency online monitoring system and method for shelter filter |
| CN113176191A (en) * | 2021-05-06 | 2021-07-27 | 国电环境保护研究院有限公司 | Gas turbine air inlet system filtering efficiency online testing system and testing method |
-
2013
- 2013-04-25 CN CN2013202124442U patent/CN203231883U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142314A (en) * | 2014-07-03 | 2014-11-12 | 苏州宏瑞净化科技有限公司 | Multichannel dust detector |
| CN112285002A (en) * | 2020-12-23 | 2021-01-29 | 北京核信锐视安全技术有限公司 | Filter efficiency online monitoring system and method for shelter filter |
| CN113176191A (en) * | 2021-05-06 | 2021-07-27 | 国电环境保护研究院有限公司 | Gas turbine air inlet system filtering efficiency online testing system and testing method |
| CN113176191B (en) * | 2021-05-06 | 2022-12-20 | 国电环境保护研究院有限公司 | Gas turbine air inlet system filtering efficiency online testing system and testing method |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |