CN204064748U - Adjustable isokinetic sampling's system - Google Patents
Adjustable isokinetic sampling's system Download PDFInfo
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- CN204064748U CN204064748U CN201420429198.0U CN201420429198U CN204064748U CN 204064748 U CN204064748 U CN 204064748U CN 201420429198 U CN201420429198 U CN 201420429198U CN 204064748 U CN204064748 U CN 204064748U
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- sampling
- pipe
- vertical duct
- motor
- isokinetic sampling
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Abstract
Adjustable isokinetic sampling's system of the present utility model, comprise cabin plate, be fixed on the bracket below the plate of cabin, be arranged on the isokinetic sampling's device on bracket, the main sampling pipe be communicated with isokinetic sampling's device and the particle monitoring sampling instrument be communicated with constant speed pipe, main sampling pipe is made up of multiple length of tubing, length of tubing is provided with isokinetic sampling's joint, isokinetic sampling's joint is connected with particle monitoring sampling instrument by multi-limbed tube, the vertical duct of constant speed pipe passes bracket and is arranged on bracket by mount pad, the first motor on bracket drives vertical duct around own axis, the second motor on the plate of cabin drives the straight line of vertical duct around mount pad and vertical duct joining place to swing, in aircraft flight process, can according to the static pressure of pressure tap measured by pitot tube (symmetrical between two), the position of constant speed pipe transverse pipe and angle is regulated to make it just to air-flow, internal pressure can be adjusted by regulation device, ensure that sampling apparatus records the degree of accuracy of numerical value.
Description
Technical field
The utility model relate to a kind of sampling apparatus, particularly a kind of particle isokinetic sampling device.
Background technology
At present, the extreme weather that pollutes takes place frequently, and Particulate Pollution attracts public is paid close attention to, and government has also put into effect serial policy and administered Particulate Pollution.Studying for comparing with ground monitoring data, needing to carry out aerial survey, but current aerial survey PM
2.5and PM
10normally with being contained in, carry-on sampling thief carries out gathering, and the constant speed pipe in existing sampling thief does not have adjusting mechanism usually, the port of constant speed pipe cannot be made to face air-flow, often with air-flow shape in an angle, cause the air inflow of constant speed pipe can not reach maximum, the Size distribution recorded and the uneven concentration of particle, the degree of accuracy of directly impact sampling.Thus, PM is improved
2.5and PM
10monitoring Data precision, ensureing the reliability of data, is current urgent problem.
In addition, when aloft sampling, existing sampling apparatus air pressure inside constantly can change along with the increase of flying height, on the one hand can cause air pressure inside and external pressure not etc. and cause sampling apparatus fluctuations in discharge, the precision of impact sampling, on the other hand, ground monitoring and when monitoring in the air, air pressure is inconsistent, the standard disunity when Comparison Study.
Summary of the invention
The goal of the invention of the application is that the main sampling pipe position solved in current sampling thief can not carry out adjusting, the problem of sampling apparatus air pressure inside instability, and provides a kind of adjustable isokinetic sampling's system.
In order to complete the goal of the invention of the application, the application by the following technical solutions:
Adjustable isokinetic sampling's system of the present utility model, comprise cabin plate, be fixed on the bracket below the plate of described cabin, be arranged on the isokinetic sampling's device on described bracket, the main sampling pipe be communicated with described sampling apparatus and the particle monitoring sampling instrument be communicated with described constant speed pipe, described isokinetic sampling's device such as to comprise at kinetic head and the constant speed pipe, described constant speed pipe is " L " shape pipe, the described port waiting kinetic head to be removably installed in the transverse pipe of described constant speed pipe, the vertical duct of described constant speed pipe passes bracket and is rotatably installed on described bracket by mount pad, described bracket is also provided with the first motor, described first motor drives described vertical duct around own axis, described cabin plate has the port passing for described vertical duct and swing, described cabin plate is also provided with the second motor, described second motor drives described vertical duct to swing around the bearing pin of connection seat and vertical duct, the upper port of described vertical duct is communicated in one end of described main sampling pipe by mechanical rotary seal part, described main sampling pipe has the through hole for connecting particle monitoring sampling instrument, other one end of described main sampling pipe is connected with regulation device, described regulation device comprises flowmeter, ratio adjusting valve and vacuum pump, described main sampling pipe is connected with described vacuum pump by breather line, described breather line is installed flowmeter and ratio adjusting valve, described regulation device also comprises pitot tube and PC, described pitot tube is communicated in described transverse pipe, described pitot tube front end tube wall has pressure tap, described PC respectively with described pitot tube, flowmeter, ratio adjusting valve, vacuum pump, first motor, second motor is connected with particle monitoring sampling instrument.
Mount pad described in the utility model comprises bearing seat, bearing and the turret for clamping constant speed pipe, described bearing seat is fixed on bracket, described turret is connected on described bearing seat by bearing, described turret can rotate relative to bearing seat, described turret clamps the vertical duct of described constant speed pipe by bearing pin, and described turret makes described constant speed pipe rotate around vertical duct central axis under the driving of the first motor.
First motor described in the utility model drives described vertical duct by the first push rod, and one end of described first push rod is articulated with on described turret, and one end is connected on described first motor in addition.
Second motor described in the utility model drives described constant speed pipe to rotate around described bearing pin axis, described second motor drives described vertical duct by the second push rod, on described vertical duct, cover has pipe collar, described vertical duct can rotate relative to described pipe collar, one end of described second push rod is fixed on described pipe collar, and one end is connected on described second motor in addition.
Main sampling pipe described in the utility model is made up of at least two length of tubing, screwed connection, Flange joint or clamp connection is adopted between described length of tubing, described length of tubing sidewall is provided with the isokinetic sampling's joint for connecting particle monitoring sampling instrument, isokinetic sampling's joint is connected with particle monitoring sampling instrument by multi-limbed tube, and described isokinetic sampling's joint is interspersed.
Pitot tube described in the utility model is connected with described PC by two tracheaes, for detecting dynamic pressure and the static pressure of air, described pitot tube is provided with 2n pressure tap, n be greater than 1 natural number, wherein have at least two pressure taps to be symmetrically distributed in the face of pipe up and down of pitot tube, have at least two pressure taps to be symmetrically distributed on pitot tube left and right side simultaneously.
Flowmeter described in the utility model and proportioning valve utilizable flow controller are replaced.
Breather line described in the utility model is soft tubing.
Adjustable isokinetic sampling's system of the present utility model compared with prior art has the following advantages: the turret of adjustable isokinetic sampling's system is connected with bracket by bearing, turret is free to rotate, turret clamps vertical duct by bearing pin simultaneously, the upper end of vertical duct is connected on main sampling pipe by mechanical rotary seal part, so vertical duct is free to rotate, vertical duct drives transverse pipe to swing, thus realize the adjustment of transverse pipe level angle, above-mentioned constant speed pipe can drive vertical duct around own axis by the first motor, thus regulate the angle that transverse pipe horizontal direction is formed with air-flow, and drive vertical duct to swing around bearing pin by the second motor, thus regulate the angle that transverse pipe vertical direction is formed with air-flow, and PC adjusts transverse pipe constantly according to the pressure that pressure tap on pitot tube records, make it relative with airflow direction, thus improve the air inflow of constant speed pipe, and make the even concentration of Size distribution and the particle recorded, ensure the degree of accuracy of sampling, in addition, above-mentioned regulation device can regulate sampling system air pressure inside by controlling flow, make air pressure inside equal with ambient pressure, avoid air pressure inside and external pressure not etc. and cause the vibrations of sampling apparatus, simultaneously regulation device also can make air pressure inside constant, and when making sample introduction Comparison Study, standard is unified.
Above-mentioned pipe collar can rotate relative to vertical duct, and avoid pipe collar to limit the rotation of vertical duct, pipe collar drives vertical duct swing under the second motor pushing simultaneously, and vertical duct drives transverse pipe also to do swing, thus realizes the adjustment of transverse pipe vertical angle.
The quantity of above-mentioned length of tubing can be determined according to real needs, when needs install particle monitoring sampling instrument additional, can by installing length of tubing additional, particle monitoring sampling instrument is communicated on main sampling pipe, isokinetic sampling's joint in length of tubing is interspersed, and forms interference each other when isokinetic sampling's joint air-flow can be avoided to enter.
The static pressure of pitot tube upper and lower surface can be recorded by the pressure tap in above-mentioned pitot tube upper and lower surface, when the static pressure of upper and lower pressure tap does not wait, by regulate transverse pipe in vertical direction with air-flow angulation, until static pressure is equal up and down, make to use the same method and make pitot tube left and right static pressure equal, now just can determine that transverse pipe is just to airflow direction.
Adjustable isokinetic sampling's system of the present utility model is placed on aircraft, in the flight course of aircraft, the position of constant speed pipe can according to the static pressure of air intake opening measured by pitot tube (symmetrical between two), regulate, internal pressure can be adjusted by regulation device, ensure that sampling apparatus records the precision of numerical value, adjustable isokinetic sampling's system of the present utility model can be arranged in different aircraft, and is applicable to sample under different wind friction velocity.
Accompanying drawing explanation
Fig. 1 is the front view of adjustable isokinetic sampling's system of the present utility model;
Fig. 2 is " I " place partial enlarged drawing in Fig. 1;
Fig. 3 is the one-piece construction schematic diagram of main sampling pipe in Fig. 1;
Fig. 4 is the diagrammatic cross-section at A-A place in Fig. 1;
Fig. 5 is the diagrammatic cross-section at B-B place in Fig. 1.
Embodiment
As shown in Figure 1, adjustable isokinetic sampling's system of the present embodiment, comprise cabin plate 1, be fixed on bracket 2 below cabin plate 1, isokinetic sampling's device 3, the main sampling pipe 4 be communicated with isokinetic sampling's device 3 and the particle monitoring sampling instrument 13 be communicated with main sampling pipe 4 are on carrier 2 installed, main sampling pipe 4 is made up of multiple length of tubing 41, length of tubing 41 is provided with isokinetic sampling's joint 42, and main sampling pipe 4 is connected with particle monitoring sampling instrument 13 by isokinetic sampling's joint 42.
Isokinetic sampling's device 3 such as to comprise at kinetic head 31 and the constant speed pipe 32, constant speed pipe 32 is " L " shape pipe, the port of the transverse pipe 321 of constant speed pipe 32 is removably installed in Deng kinetic head 31, the vertical duct 322 of constant speed pipe 32 passes bracket 2 and is rotatably installed on bracket 2 by mount pad 5, bracket 2 being also provided with the first motor 6, first motor 6 drives vertical duct 322 around own axis.
Cabin plate 1 has the port passing for vertical duct 322 and swing, cabin plate 1 is also provided with the second motor 7, second motor 7 drives vertical duct 322 to swing around bearing pin 51, the upper port of vertical duct 322 is communicated in one end of main sampling pipe 4 by mechanical rotary seal part 43, main sampling pipe 4 is connected with particle monitoring sampling instrument by through hole, and other one end of main sampling pipe 4 is connected with regulation device 8.
Regulation device 8 comprises flowmeter 81, ratio adjusting valve 82 and vacuum pump 83, and main sampling pipe 4 is connected with vacuum pump 83 by breather line 9, breather line 9 is installed flowmeter 81 and ratio adjusting valve 82, and breather line 9 is soft tubing.
Regulation device 8 also comprises pitot tube 84 and PC 85, pitot tube 84 is communicated in transverse pipe 321, pitot tube 84 front end tube wall has pressure tap 841, PC 85 respectively with pitot tube 84, flowmeter 81, ratio adjusting valve 82, vacuum pump 83, first motor 6, second motor 7 is connected with particle monitoring sampling instrument, preferably, pitot tube 84 is connected with described PC by two tracheaes, for detecting dynamic pressure and the static pressure of air, pitot tube 84 is parallel with transverse pipe 321, as shown in Figure 5, pitot tube 84 is provided with 2n pressure tap 841, n be greater than 1 natural number, two pressure taps 841 are wherein had at least to be positioned at the face of pipe up and down of pitot tube 84, have at least two pressure taps 841 to be positioned on pitot tube 84 left and right side simultaneously, preferably, two pressure taps 841 be positioned on the face of pipe up and down of pitot tube 84 are oppositely arranged, two pressure taps 841 be positioned on the left and right side of pitot tube 84 are oppositely arranged.
As shown in Figure 1 and Figure 4, mount pad 5 comprises bearing seat 52, bearing 53 and turret 54, bearing seat 52 is fixed on bracket 2, turret 54 is connected on bearing seat 52 by bearing 53, turret 54 can rotate relative to vertical duct 322 axis, turret 54 clamps the vertical duct 322 of constant speed pipe 32 by bearing pin 51, and turret 54 makes constant speed pipe 32 rotate around vertical duct 322 central axis under the driving of the first motor 6.
Preferably, the first motor 6 drives vertical duct 322 by the first push rod 10, and one end of the first push rod 322 is articulated with on turret 54, and one end is connected on the first motor 6 in addition.
Preferably, second motor 7 drives constant speed pipe 32 to rotate around bearing pin 51 axis, second motor 7 drives vertical duct 32 by the second push rod 11, on vertical duct 32, cover has pipe collar 12, vertical duct 32 can rotate relative to pipe collar 12, one end of second push rod 11 is fixed on pipe collar 12, and one end is connected on the second motor 7 in addition.
As Figure 2-3, being made up of three length of tubing 41 of main sampling pipe 4, screwed connection, Flange joint or clamp connection is adopted between length of tubing 41, length of tubing 41 is provided with isokinetic sampling's joint 42, isokinetic sampling's joint 42 is connected with particle monitoring sampling instrument 13 by multi-limbed tube, preferably, the isokinetic sampling's joint 42 in length of tubing 41 is in upper and lower staggered distribution.
Flowmeter 81 in the present embodiment and ratio adjusting valve 82 also utilizable flow controller are replaced.
The use procedure of above-mentioned adjustable isokinetic sampling's system is: when carrying out aerial survey, adjustable isokinetic sampling's system is arranged on cabin plate 1, PC 85 controls according to the static pressure that pitot tube 84 records the position adjusting constant speed pipe 32, concrete grammar is: the static pressure that the pressure tap 841 of pitot tube 84 vertical direction records is transferred to PC, if the static pressure that the pressure tap of vertical direction records is unequal, then PC 85 controls the second motor 7 and drives vertical duct 322 to rotate around bearing pin 51, until the static pressure that records of the pressure tap 841 of vertical direction is consistent, simultaneously, the static pressure that the pressure tap 841 of pitot tube 84 horizontal direction records is transferred to PC 85, if the static pressure that the pressure tap of horizontal direction 841 records is unequal, then PC 85 controls the first motor 6 and drives vertical duct 322 to rotate around own axes, until the static pressure that records of the pressure tap 841 of horizontal direction is consistent, the port of the pitot tube 84 parallel with constant speed pipe 32 can be made just to air-flow by said method, therefore the port of constant speed pipe 32 is also just to air-flow.
When aerial survey, during the height change of aircraft flight, pitot tube 84 can be transferred to PC 85 dynamic pressure, the internal pressure that flowmeter 81 records simultaneously also can be transferred to PC 85, when inside and outside air pressure is inconsistent, PC 85 controls vacuum pump 83 and extracts internal gas, and simultaneously PC 85 can control ratio variable valve 82 control device internal gas flow flow, until sampling system internal-external pressure is consistent.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (8)
1. adjustable isokinetic sampling's system, comprise cabin plate (1), be fixed on the bracket (2) of below, described cabin plate (1), be arranged on the isokinetic sampling's device (3) on described bracket (2), the particle monitoring sampling instrument (13) be connected with described isokinetic sampling's device (3), described particle monitoring sampling instrument (13) is communicated with described isokinetic sampling's device (3) by the isokinetic sampling's joint (42) on main sampling pipe (4), described isokinetic sampling's device (3) such as to comprise at kinetic head (31) and the constant speed pipe (32), described constant speed pipe (32) is " L " shape pipe, the described port waiting kinetic head (31) to be removably installed in the transverse pipe (321) of described constant speed pipe (32), it is characterized in that: the vertical duct (322) of described constant speed pipe (32) is rotatably installed on described bracket (2) through bracket (2) and by mount pad (5), described vertical duct (322) is by bearing pin (51) connection seat (5), described bracket (2) is also provided with the first motor (6), described first motor (6) drives described vertical duct (322) around own axis, described cabin plate (1) has the port passing for described vertical duct (322) and swing, described cabin plate (1) is also provided with the second motor (7), described second motor (7) drives described vertical duct (322) around described bearing pin (51) axis oscillating, the upper port of described vertical duct (322) is communicated in one end of described main sampling pipe (4) by mechanical rotary seal part (43), described main sampling pipe
(4)other one end be connected with regulation device (8), described regulation device (8) comprises flowmeter (81), ratio adjusting valve (82) and vacuum pump (83), described main sampling pipe (4) is connected with described vacuum pump (83) by breather line (9), described breather line (9) is installed flowmeter (81) and ratio adjusting valve (82), described regulation device (8) also comprises and is arranged on pitot tube (84) in described transverse pipe (321) and PC (85), described pitot tube (84) and described transverse pipe (321) be arranged in parallel, described pitot tube (84) front end tube wall has pressure tap (841), described PC (85) respectively with described pitot tube (84), flowmeter (81), ratio adjusting valve (82), vacuum pump (83), first motor (6), second motor (7) is connected with particle monitoring sampling instrument (13).
2. adjustable isokinetic sampling's system as claimed in claim 1, it is characterized in that: described mount pad (5) comprises bearing seat (52), bearing (53) and the turret (54) for clamping constant speed pipe (32), described bearing seat (52) is fixed on bracket (2), described turret (54) is connected on described bearing seat (52) by bearing (53), described turret (54) can rotate around described vertical duct (322) central axis, described turret (54) makes described constant speed pipe (32) rotate around vertical duct (322) central axis under the driving of the first motor (6).
3. adjustable isokinetic sampling's system as claimed in claim 2, it is characterized in that: described first motor (6) promotes described turret (54) by the first push rod (10), one end of described first push rod (10) is articulated with on described turret (54), and one end connects described first motor (6) in addition.
4. adjustable isokinetic sampling's system as claimed in claim 3, it is characterized in that: described second motor (7) promotes described vertical duct (322) by the second push rod (11) and swings, the upper cover of described vertical duct (322) has pipe collar (12), described vertical duct (322) can rotate relative to described pipe collar (12), one end of described second push rod (11) is fixed on described pipe collar (12), and one end connects described second motor (7) in addition.
5. the adjustable isokinetic sampling's system as described in claim 1,2,3 or 4, it is characterized in that: described main sampling pipe (4) is made up of at least two length of tubing (41), described length of tubing adopts screwed connection, Flange joint or clamp connection between (41), described length of tubing (41) sidewall is provided with isokinetic sampling's joint (42), isokinetic sampling's joint (42) connects particle monitoring sampling instrument (13) by multi-limbed tube, and described isokinetic sampling's joint (42) is interspersed.
6. adjustable isokinetic sampling's system as claimed in claim 5, it is characterized in that: described pitot tube (84) is connected with described PC (85) by two tracheaes, for detecting dynamic pressure and the static pressure of air, described pitot tube (84) is provided with 2n pressure tap (841), n be greater than 1 natural number, wherein have at least two pressure taps (841) to be symmetrically distributed in the face of pipe up and down of pitot tube (84), have at least two pressure taps (841) to be symmetrically distributed on pitot tube left and right side simultaneously.
7. adjustable isokinetic sampling's system as claimed in claim 6, is characterized in that: described flowmeter (81) and ratio adjusting valve (82) utilizable flow controller are replaced.
8. adjustable isokinetic sampling's system as claimed in claim 7, is characterized in that: described breather line (9) is soft tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429198.0U CN204064748U (en) | 2014-07-31 | 2014-07-31 | Adjustable isokinetic sampling's system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429198.0U CN204064748U (en) | 2014-07-31 | 2014-07-31 | Adjustable isokinetic sampling's system |
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| Publication Number | Publication Date |
|---|---|
| CN204064748U true CN204064748U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420429198.0U Withdrawn - After Issue CN204064748U (en) | 2014-07-31 | 2014-07-31 | Adjustable isokinetic sampling's system |
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| Country | Link |
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| CN (1) | CN204064748U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132831A (en) * | 2014-07-31 | 2014-11-05 | 中国环境科学研究院 | Adjustable constant speed sampling system |
| CN107607365A (en) * | 2017-09-30 | 2018-01-19 | 中国汽车技术研究中心 | A kind of sampling pipe for the experiment of motor vehicle PEMS equipment uniformity comparison |
| CN107796740A (en) * | 2017-12-14 | 2018-03-13 | 百奥森（江苏）食品安全科技有限公司 | A kind of industrial dust investigating |
| CN110186723A (en) * | 2019-06-19 | 2019-08-30 | 山东大学 | Fine particle sampling device, sampling system and method for aircraft aerial survey |
-
2014
- 2014-07-31 CN CN201420429198.0U patent/CN204064748U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132831A (en) * | 2014-07-31 | 2014-11-05 | 中国环境科学研究院 | Adjustable constant speed sampling system |
| CN104132831B (en) * | 2014-07-31 | 2016-05-04 | 中国环境科学研究院 | Adjustable isokinetic sampling's system |
| CN107607365A (en) * | 2017-09-30 | 2018-01-19 | 中国汽车技术研究中心 | A kind of sampling pipe for the experiment of motor vehicle PEMS equipment uniformity comparison |
| CN107796740A (en) * | 2017-12-14 | 2018-03-13 | 百奥森（江苏）食品安全科技有限公司 | A kind of industrial dust investigating |
| CN107796740B (en) * | 2017-12-14 | 2020-05-08 | 百奥森（江苏）食品安全科技有限公司 | Industrial dust detection device |
| CN110186723A (en) * | 2019-06-19 | 2019-08-30 | 山东大学 | Fine particle sampling device, sampling system and method for aircraft aerial survey |
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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: 20141231 Effective date of abandoning: 20160504 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |