CN204346780U - A kind of dust sampler and use the dust concentration caliberating device of this dust sampler - Google Patents
A kind of dust sampler and use the dust concentration caliberating device of this dust sampler Download PDFInfo
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- CN204346780U CN204346780U CN201420863109.3U CN201420863109U CN204346780U CN 204346780 U CN204346780 U CN 204346780U CN 201420863109 U CN201420863109 U CN 201420863109U CN 204346780 U CN204346780 U CN 204346780U
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- escape pipe
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Abstract
The utility model relates to dust sampler and uses the dust concentration caliberating device of this dust sampler, dust sampler comprises the sample lines being provided with air pump, in sample lines, string is provided with differential pressure gauge and flow adjustment pipe, flow adjustment pipe is provided with flowmeter and flow control valve.During use, sample lines is connected on wind-tunnel, open air pump, adjust flux variable valve is to the sampling flow of sensor of dust concentration, adjust wind turbine apparatus flow velocity simultaneously and be shown as zero to differential pressure gauge, air-flow velocity now in wind-tunnel is equal with the flow velocity in sample lines, dust concentration now in sample lines and the dust concentration error in wind-tunnel minimum, this device is according to air balance principle design, namely when discharge pressure is equal with pressure of inspiration(Pi), the additional drag of pipeline is minimum, and now flowmeter is shown as dust accurate flow.
Description
Technical field
The utility model relates to dust sampler and uses the dust concentration caliberating device of this dust sampler.
Background technology
Dust refers to the aerial particulate that suspends, and dust too much or very few in air all will produce disastrous effect to environment.In productive life, industrial dust is the natural enemy of human health, is the one of the main reasons of bringing out various diseases, particularly Mine Dust, serious harm workman's is healthy on the one hand, causes workman to suffer from pneumoconiosis, the danger of the too high blast that also lies dormant of dust concentration on the other hand.The annual casualties high number caused because of dust disaster, causes huge economic loss to country.To this in order to strictly control dust concentration, need to monitor dust concentration, conventional concentration monitoring device is sensor of dust concentration, and the quality of sensor of dust concentration and accuracy are the maximum guarantees of effectively measuring dust concentration.The scaling method of common sensor of dust concentration is again that wind-tunnel and sensor of dust concentration install the dust sampler of a standard with sectional position, dust sampler measures the dust concentration in wind-tunnel by weight method, compare with the measured value of sensor of dust concentration, determine the demarcation accuracy of sensor of dust concentration.But existing dust sampler cannot ensure that the flow velocity of wind-tunnel is identical with sampling flow velocity, therefore causes the flowmeter of dust sampler cannot accurately show dust flow, causes sensor of dust concentration cannot accurate calibration.
Utility model content
The purpose of this utility model is to provide a kind of dust sampler that can realize flowmeter and accurately show dust flow; The purpose of this utility model is also to provide a kind of dust concentration caliberating device using this dust sampler.
In order to solve the problem, in the utility model, the technical scheme of dust sampler is:
Dust sampler, comprises the sample lines being provided with air pump, and in sample lines, string is provided with differential pressure gauge and flow adjustment pipe, flow adjustment pipe is provided with flowmeter and flow control valve.
Described flow adjustment pipe comprises the first flow adjustable pipe section and the second flow regulation pipe section that are arranged in parallel, described flowmeter comprises the first-class gauge be arranged on first flow adjustable pipe section and the second gauge be arranged on the second flow regulation pipe section, described flow control valve comprises the first flow variable valve be arranged on first flow adjustable pipe section and the second adjustable valve be arranged on the second flow regulation pipe section, and first-class gauge is different with the sensing range of second gauge.
First flow regulates pipeline, the second flow adjustment pipe is arranged in described sample lines by selector valve.
Described sample lines is also provided with filter membrane.
In described sample lines, also string is provided with current stabilization case, current stabilization case comprises casing, casing is provided with the first escape pipe be communicated with described cabinets cavity, second escape pipe and the 3rd escape pipe, second escape pipe has the second escape pipe straight length that axis extends in left-right direction, first escape pipe has and is communicated with and first escape pipe straight length vertically disposed with the second escape pipe straight length with the second escape pipe straight length, 3rd escape pipe has and is communicated with and three escape pipe straight length vertically disposed with the 3rd escape pipe straight length with the 3rd escape pipe straight length, first escape pipe straight length and the 3rd escape pipe straight length are coaxially set, the endpiece port of the second escape pipe forms the gas outlet of described casing.
Be provided with current-stabilizing structure in casing, current-stabilizing structure comprises spaced apart first wire netting, the second wire netting and the 3rd wire netting in left-right direction.
In the utility model, the technical scheme of dust concentration caliberating device is:
Dust concentration caliberating device, comprise wind-tunnel, sensor of dust concentration and dust sampler, sensor of dust concentration is connected with described wind-tunnel, dust sampler comprises and is provided with air pump and the sample lines be connected with described wind-tunnel, in sample lines, string is provided with differential pressure gauge and flow adjustment pipe, flow adjustment pipe is provided with flowmeter and flow control valve.
Described flow adjustment pipe comprises the first flow adjustable pipe section and the second flow regulation pipe section that are arranged in parallel, described flowmeter comprises the first-class gauge be arranged on first flow adjustable pipe section and the second gauge be arranged on the second flow regulation pipe section, described flow control valve comprises the first flow variable valve be arranged on first flow adjustable pipe section and the second adjustable valve be arranged on the second flow regulation pipe section, and first-class gauge is different with the sensing range of second gauge.
Described sample lines is also provided with filter membrane.
In described sample lines, also string is provided with current stabilization case, current stabilization case comprises casing, casing is provided with the first escape pipe be communicated with described cabinets cavity, second escape pipe and the 3rd escape pipe, second escape pipe has the second escape pipe straight length that axis extends in left-right direction, first escape pipe has and is communicated with and first escape pipe straight length vertically disposed with the second escape pipe straight length with the second escape pipe straight length, 3rd escape pipe has and is communicated with and three escape pipe straight length vertically disposed with the 3rd escape pipe straight length with the 3rd escape pipe straight length, first escape pipe straight length and the 3rd escape pipe straight length are coaxially set, the endpiece port of the second escape pipe forms the gas outlet of described casing.
The beneficial effects of the utility model are: be connected on wind-tunnel by sample lines during use, open air pump, adjust flux variable valve is to the sampling flow of sensor of dust concentration, adjust wind turbine apparatus flow velocity simultaneously and be shown as zero to differential pressure gauge, air-flow velocity now in wind-tunnel is equal with the flow velocity in sample lines, dust concentration now in sample lines and the dust concentration error in wind-tunnel minimum, this device is according to air balance principle design, namely when discharge pressure is equal with pressure of inspiration(Pi), the additional drag of pipeline is minimum, and now flowmeter is shown as dust accurate flow.
Further, air-flow is discharged by first, second, and third escape pipe after current stabilization case, because the first escape pipe straight length and the 3rd escape pipe straight length are coaxially set, therefore the air-flow velocity given off from the first, the 3rd escape pipe straight length is identical, direction is contrary, frequency is identical, superpose through overbump, disturbance further reduces, strengthen after superposing to prevent frequency and the second escape pipe straight length is set, second escape pipe straight length plays iris action, thus effectively reduces perturbed problem when air-flow is discharged.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of dust concentration caliberating device in the utility model;
Fig. 2 is the structural representation of dust sampler in Fig. 1;
Fig. 3 is the structural representation of current stabilization case in Fig. 2;
Fig. 4 is the right view of Fig. 3.
Embodiment
The embodiment of dust concentration caliberating device is as shown in Fig. 1 ~ 4: comprise wind-tunnel 13, sensor of dust concentration 14 and dust sampler 15, sensor of dust concentration and dust sampler are in the same sectional position place of wind-tunnel, contribute to like this ensureing that the dust concentration in environment residing for sensor of dust concentration 14 and dust sampler 15 is consistent.Dust sampler is comprised and is provided with air pump 15 and the sample lines 18 be connected with wind-tunnel by sampling head 17, filter membrane is provided with in turn in sample lines, current stabilization case 41, differential pressure gauge 49, flow adjustment pipe and air pump 45, air pump is negative pressure pump, wherein flow adjustment pipe is provided with flowmeter and flow control valve, flow adjustment pipe comprises the first flow adjustable pipe section and the second flow regulation pipe section that are arranged in parallel, first flow adjustable pipe section, second flow regulation pipe section is arranged in sample lines by selector valve 42, flowmeter comprises the first-class gauge 43 be arranged on first flow adjustable pipe section and the second gauge 44 be arranged on the second flow regulation pipe section, flow control valve comprises the first flow variable valve 46 be arranged on first flow adjustable pipe section and the second adjustable valve 47 be arranged on the second flow regulation pipe section, first-class gauge is different with the sensing range of second gauge, different flow regulation pipe sections can be selected like this according to the flow detection scope of different dusts concentration sensor.For ensureing when low discharge is sampled, damage can not to be caused to air pump, also be provided with blowdown valve 48 in sample lines, for being vented equalizing line flow.
Current stabilization case 41 comprises casing 4, the right plate of casing is provided with the first escape pipe be communicated with cabinets cavity, second escape pipe and the 3rd escape pipe, second escape pipe has the second escape pipe straight length 8 that axis extends in left-right direction, first escape pipe has and to be communicated with the second escape pipe straight length and in the vertically disposed first escape pipe straight length 11 of the second escape pipe straight length, 3rd escape pipe has and is communicated with and three escape pipe straight length 12 vertically disposed with the second escape pipe straight length with the second escape pipe straight length, first escape pipe straight length and the 3rd escape pipe straight length are coaxially set, the endpiece port of the second escape pipe forms the gas outlet of casing, gas outlet place is provided with gas outlet damping fin 6.The upper cover plate of casing is provided with the first draft tube 1, second draft tube 7 and the 3rd draft tube 2, the entrance point port of the first draft tube, the 3rd draft tube is all communicated with the second draft tube, the entrance point port of the second draft tube forms the air intake opening of casing, and air intake opening place is provided with air intake opening damping fin 3.Between air intake opening and gas outlet, current-stabilizing structure is provided with in casing, current-stabilizing structure comprises spaced apart first wire netting 9, second wire netting 5 and the 3rd wire netting 10 in left-right direction, the size of mesh opening of the first wire netting, the second wire netting and the 3rd wire netting is 120 orders, be provided with gap between the lower end of the second wire netting and bottom half, in the present embodiment, each wire netting is stainless (steel) wire.
Timing signal is being carried out as shown in Figure 1 to sensor of dust concentration, the same xsect of wind-tunnel connects sensor of dust concentration and dust sampler, ensure that the stopple coupon 16 of sensor of dust concentration 14 enters the distance in wind-tunnel identical with the distance that the sample lines of dust sampler enters in wind-tunnel, sampling flow according to sensor of dust concentration selects different flow regulation pipe section work by selector valve, open air pump, regulate corresponding flow control valve to the sampling flow of sensor of dust concentration, adjust wind turbine apparatus flow velocity simultaneously and be shown as zero to differential pressure gauge, wind-tunnel starts to send out dirt, open sensor of dust concentration after dirt pending is stable start to sample and record displayed value, after the stipulated time, close instrument, take out filter membrane, with sensor of dust concentration displayed value correlation calibration after weighing.Current stabilization case is used for the disturbance that steady air flow eliminates air pump, accuracy is demarcated in further raising, flow regulation valve regulating flow, when differential pressure gauge is shown as zero, air-flow velocity in wind-tunnel is equal with the flow velocity in sample lines, dust concentration error in the dust concentration of now sampling and wind-tunnel is minimum, can realize the accurate calibration of instrument.Air-flow is when by current stabilization case, first after air intake opening damping fin current stabilization, from first, second and the 3rd draft tube enter in casing, tank-volumes and air inflow proportional, can not air-flow be had to discharge after having air-flow to enter at once, after the enough pressure of generation overcomes the resistance of casing, gas just can be had to discharge, through first after air-flow enters, second and the 3rd metal mesh filter, further current stabilization, at this moment the air-flow quite stable of blowdown presssure is reached, in order to further steady air flow eliminates disturbance, air-flow is through first, second and the 3rd escape pipe discharge, and set out gas port damping fin at gas outlet place, form third level current stabilization.After this current stabilization case current stabilization, survey and reach 1.5 ~ 2.1% in the degree of stability of design discharge, can request for utilization be met.Exhaust mode for building automatic-discharging after pressure, so can ignore for the exhaust resistance of pipeline is very little.Damping fin adopts isocyanurate foam, and the density of air intake opening damping fin is greater than the density of gas outlet damping fin, spills into in pipeline during installation, by the bolt presses of interface, uses and to back out interface bolt and replaceable during steady flow result difference after a period of time.In other embodiment of dust concentration caliberating device: the number of draft tube can also be one two or other number; The size of mesh opening of each wire netting can also be 100 orders, 150 orders or other size; The number of wire netting also can be arranged as required, such as one, two or other number; Draft tube can also be arranged on the left plate of casing; Escape pipe can also be arranged on the top board of casing; Certain current stabilization case and blowdown valve can not also be established; The number in flow regulation pipe section can also be selected as required, such as one, three or other number; First, second flow regulation pipe section also can not be arranged in sample lines by selector valve, such as on first, second flow adjustment pipe, arranges switch valve respectively.
Claims (10)
1. dust sampler, is characterized in that: comprise the sample lines being provided with air pump, and in sample lines, string is provided with differential pressure gauge and flow adjustment pipe, flow adjustment pipe is provided with flowmeter and flow control valve.
2. dust sampler according to claim 1, it is characterized in that: described flow adjustment pipe comprises the first flow adjustable pipe section and the second flow regulation pipe section that are arranged in parallel, described flowmeter comprises the first-class gauge be arranged on first flow adjustable pipe section and the second gauge be arranged on the second flow regulation pipe section, described flow control valve comprises the first flow variable valve be arranged on first flow adjustable pipe section and the second adjustable valve be arranged on the second flow regulation pipe section, first-class gauge is different with the sensing range of second gauge.
3. dust sampler according to claim 2, is characterized in that: first flow regulates pipeline, the second flow adjustment pipe is arranged in described sample lines by selector valve.
4. dust sampler according to claim 1, is characterized in that: described sample lines is also provided with filter membrane.
5. the dust sampler according to claim 1 ~ 4 any one, it is characterized in that: in described sample lines, also string is provided with current stabilization case, current stabilization case comprises casing, casing is provided with the first escape pipe be communicated with described cabinets cavity, second escape pipe and the 3rd escape pipe, second escape pipe has the second escape pipe straight length that axis extends in left-right direction, first escape pipe has and is communicated with and first escape pipe straight length vertically disposed with the second escape pipe straight length with the second escape pipe straight length, 3rd escape pipe has and is communicated with and three escape pipe straight length vertically disposed with the 3rd escape pipe straight length with the 3rd escape pipe straight length, first escape pipe straight length and the 3rd escape pipe straight length are coaxially set, the endpiece port of the second escape pipe forms the gas outlet of described casing.
6. dust sampler according to claim 5, is characterized in that: be provided with current-stabilizing structure in casing, and current-stabilizing structure comprises spaced apart first wire netting, the second wire netting and the 3rd wire netting in left-right direction.
7. dust concentration caliberating device, comprise wind-tunnel, sensor of dust concentration and dust sampler, sensor of dust concentration is connected with described wind-tunnel, it is characterized in that: dust sampler comprises and is provided with air pump and the sample lines be connected with described wind-tunnel, in sample lines, string is provided with differential pressure gauge and flow adjustment pipe, flow adjustment pipe is provided with flowmeter and flow control valve.
8. dust concentration caliberating device according to claim 7, it is characterized in that: described flow adjustment pipe comprises the first flow adjustable pipe section and the second flow regulation pipe section that are arranged in parallel, described flowmeter comprises the first-class gauge be arranged on first flow adjustable pipe section and the second gauge be arranged on the second flow regulation pipe section, described flow control valve comprises the first flow variable valve be arranged on first flow adjustable pipe section and the second adjustable valve be arranged on the second flow regulation pipe section, first-class gauge is different with the sensing range of second gauge.
9. dust concentration caliberating device according to claim 7, is characterized in that: described sample lines is also provided with filter membrane.
10. the dust concentration caliberating device according to claim 7 ~ 9 any one, it is characterized in that: in described sample lines, also string is provided with current stabilization case, current stabilization case comprises casing, casing is provided with the first escape pipe be communicated with described cabinets cavity, second escape pipe and the 3rd escape pipe, second escape pipe has the second escape pipe straight length that axis extends in left-right direction, first escape pipe has and is communicated with and first escape pipe straight length vertically disposed with the second escape pipe straight length with the second escape pipe straight length, 3rd escape pipe has and is communicated with and three escape pipe straight length vertically disposed with the 3rd escape pipe straight length with the 3rd escape pipe straight length, first escape pipe straight length and the 3rd escape pipe straight length are coaxially set, the endpiece port of the second escape pipe forms the gas outlet of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863109.3U CN204346780U (en) | 2014-12-31 | 2014-12-31 | A kind of dust sampler and use the dust concentration caliberating device of this dust sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863109.3U CN204346780U (en) | 2014-12-31 | 2014-12-31 | A kind of dust sampler and use the dust concentration caliberating device of this dust sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204346780U true CN204346780U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420863109.3U Withdrawn - After Issue CN204346780U (en) | 2014-12-31 | 2014-12-31 | A kind of dust sampler and use the dust concentration caliberating device of this dust sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204346780U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502162A (en) * | 2014-12-31 | 2015-04-08 | 郑州光力科技股份有限公司 | Dust sampler and dust concentration calibrating device using dust sampler |
| CN105004648A (en) * | 2015-06-24 | 2015-10-28 | 江苏大学 | Calibration testing apparatus for medicinal powder aerosol concentration sensor |
| CN107764708A (en) * | 2017-11-24 | 2018-03-06 | 武汉市普瑞思高科技有限公司 | A kind of vehicle-mounted laser PM2.5 sensors |
-
2014
- 2014-12-31 CN CN201420863109.3U patent/CN204346780U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502162A (en) * | 2014-12-31 | 2015-04-08 | 郑州光力科技股份有限公司 | Dust sampler and dust concentration calibrating device using dust sampler |
| CN104502162B (en) * | 2014-12-31 | 2017-07-07 | 郑州光力科技股份有限公司 | Dust sampler and the dust concentration caliberating device using the dust sampler |
| CN105004648A (en) * | 2015-06-24 | 2015-10-28 | 江苏大学 | Calibration testing apparatus for medicinal powder aerosol concentration sensor |
| CN105004648B (en) * | 2015-06-24 | 2018-01-23 | 江苏大学 | A kind of medicinal powder aerosol concentration transducer calibration experimental rig |
| CN107764708A (en) * | 2017-11-24 | 2018-03-06 | 武汉市普瑞思高科技有限公司 | A kind of vehicle-mounted laser PM2.5 sensors |
| CN107764708B (en) * | 2017-11-24 | 2024-01-02 | 武汉市普瑞思高科技有限公司 | Vehicle-mounted laser PM2.5 sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150520 Effective date of abandoning: 20170707 |
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| AV01 | Patent right actively abandoned |