CN209656652U - A kind of gas detecting instrument calibrating installation - Google Patents
A kind of gas detecting instrument calibrating installation Download PDFInfo
- Publication number
- CN209656652U CN209656652U CN201822251342.7U CN201822251342U CN209656652U CN 209656652 U CN209656652 U CN 209656652U CN 201822251342 U CN201822251342 U CN 201822251342U CN 209656652 U CN209656652 U CN 209656652U
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- gas
- chip microcontroller
- detecting instrument
- annular
- magnet
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Abstract
The utility model belongs to instrument calibration technical field, disclose a kind of gas detecting instrument calibrating installation, including the gentle body detector of standard gas source, pipeline is provided between standard gas source and gas detecting instrument, it is connected with pressure gauge on pipeline in turn, mass flow controller, intake valve, annular gas tank, air outlet valve and aspiration pump, the hollow portion of annular gas tank is connected with support rod, single-chip microcontroller and motor are provided on the support rod, the single-chip microcontroller respectively with mass flow controller, intake valve and air outlet valve are electrically connected, the output shaft of motor is connected with first rotating shaft, first rotating shaft is provided with the first magnet far from one end of output shaft, annular gas tank is internally provided with endless glide, sliding block is slidably connected in endless glide, slider bottom is provided with the second magnet to attract each other with the first magnet, gas sensor is provided on sliding block.The utility model is easy to operate, can automatically configure the gas of various concentration and the gas of variety classes mixing, and the accuracy for measuring its concentration is high.
Description
Technical field
The utility model relates to instrument calibration technical field, specially a kind of gas detecting instrument calibrating installation.
Background technique
With people's increasing emphasis on environmental protection, various toxic, pernicious gas detections are all to the precision of gas detecting instrument
More stringent requirements are proposed, is influenced using time long gas detecting instrument by burn into null offset, detection accuracy drops significantly
It is low, and the decline of detection accuracy be so that people can not have found air quality problems in time and improve to it, so that people
Production and living environment further deteriorates, and then influences people's lives quality；And gas detecting instrument can be detected gaseous species
More and more, gage work personnel generally require to prepare multiple standards gas, every kind of calibrating gas when carrying out calibration or verification
Multiple concentration values are also needed, this results in largely wasting, uneconomical.
The calibrating installation of existing gas detecting instrument includes standard gas source, air distributing device, gas tank and residual gas recycling device,
Various concentration, different types of calibrating gas can be automatically configured, so that gas detecting instrument calibration is become easy, operation letter
It is single, residual gas recycling device is set, avoids revealing.
But density is distinguished big gas and is mixed in gas tank unevenly, and Qiang Douhui does not make the gas configured to the mobility of gas
Concentration inaccuracy, is not used to calibration gas detector.
Utility model content
The utility model is intended to provide a kind of gas detecting instrument calibrating installation, to solve the gas configured in the prior art
The problem of measurement of concetration inaccuracy.
The utility model provides base case: a kind of gas detecting instrument calibrating installation, including the gentle body of standard gas source
Detector is provided with pipeline, pressure gauge, quality is disposed on the pipeline between the standard gas source and gas detecting instrument
Flow controller, intake valve, annular gas tank, air outlet valve and aspiration pump, the annular gas tank are provided with support rod, the support rod
On be provided with single-chip microcontroller and motor, the single-chip microcontroller is electrically connected with mass flow controller, intake valve and air outlet valve respectively, described
The output shaft of motor is connected with first rotating shaft, and the end of output shaft of the first rotating shaft far from motor is provided with the first magnet；
The annular gas tank is internally provided with endless glide, sliding block is slidably connected in the endless glide, the slider bottom is set
It is equipped with the second magnet to attract each other with the first magnet, first magnet and the second magnet are used for band movable slider along endless glide
It moves, is provided with gas sensor on the sliding block, the information of acquisition is sent to single-chip microcontroller, the list by the gas sensor
Piece machine is opened and closed for information processing and control valve.
The working principle of base case: first turning on aspiration pump, the redundancy gas in withdrawing device, aobvious to gas detecting instrument
After showing zero, the concentration of required gas, flow information are input in single-chip microcontroller, single-chip microcontroller controls inlet open, required
Calibrating gas flow into annular gas tank, while the output shaft of motor drives first rotating shaft to move in a circle, the in first rotating shaft
One magnet makes sliding block take exercises along endless glide with the cooperation of the second magnet, is sufficiently mixed gas in annular gas tank, gas
Sensor and mass flow controller send real-time gas concentration information and real-time integrated flow information to single-chip microcontroller respectively,
Information carries out processing to single-chip microcontroller based on the received and automation control valve opens and closes.
The beneficial effect of base case is: compared with prior art, the utility model is by sliding block and sensor in annular
It moves in a circle in gas tank, strengthens the air flow property in annular gas tank, avoid stratification of hot gas, make gas mixing more
Uniformly, accuracy of the present apparatus measurement for the concentration of the gas of calibration is increased；Sensor makes in annular gas tank internal motion
Sensor can survey concentration in each position in annular gas tank, can judge whether gas is sufficiently mixed by the variation of real-time concentration
It closes, strengthens the practicability of the present apparatus；The present apparatus carries out automatically processing information and control valve using single-chip microcontroller, easy to operate.
Further, the single-chip microcontroller receives the existing concentration information and mass flow control of gas concentration sensor transmission
The current integrated flow information that device is sent: if existing concentration information is 0, single-chip microcontroller controls intake valve and opens；If current accumulative
When flow information reaches preset integrated flow information, single-chip microcontroller controls intake valve and closes；After waiting 10 seconds, if existing concentration is believed
Cease or error consistent with preset concentration information less than 2% when, single-chip microcontroller air outlet valve opening, if existing concentration information with it is preset
Concentration information is more than or equal to 2%, single-chip microcontroller alarm.
Single-chip microcontroller is worked as by what the existing concentration information and mass flow controller that send gas concentration sensor were sent
Preceding integrated flow information is compared with set information, and two devices are used for the mixed Standard Gases in measure annular gas tank simultaneously
Body avoids using being not allowed when single-measurement device and influences calibration, improves standard of the measurement for the concentration of the gas of calibration
Exactness.
Further, the cross section of the endless glide is T-type, and what the sliding block can match is assemblied in endless glide
On.
Sliding block is assemblied in T-shaped slide rail, is avoided that sliding block is fallen from sliding rail when the first magnet and the second magnet are staggered, and is improved
The stability of device.
Further, the annular gas tank includes the air inlet being connected to by pipeline with intake valve, is provided at air inlet
Clockwork spring and rotatable second shaft, one end of the clockwork spring are connected with the second shaft, the clockwork spring it is another
One end is fixedly connected on the side wall of annular gas tank, is provided with fan in second shaft.
Gas drives fan reversion when entering annular gas tank, clockwork spring accumulation of energy, when the inlet valve is closed, clockwork spring is released
Exoergic amount drives fan rotation to dry forwards, strengthens the mobility of gas in annular gas tank, improves gas sensor survey
The accuracy of amount.
Further, the outer wall of the annular gas tank is provided with multiple air inlets, and each air inlet is threaded with
Dome is provided with seal washer between the dome and annular gas tank outer wall.
The present apparatus that multiple air inlets can make accesses the calibrating gas of more variety classes, various concentration, to calibrate difference
Gas detecting instrument, air inlet is configured with dome and seal washer, air inlet facilitated to seal when not in use, increases the present apparatus
Practicability.
Further, the annular gas tank includes the gas outlet being connected to by pipeline with air outlet valve, and the gas outlet is in funnel
Shape.
Funnelform gas outlet can promote gas in annular gas tank to gas detecting instrument stream when air outlet valve is opened
It is dynamic, save the required time of calibration.
Detailed description of the invention
Fig. 1 is a kind of top view of gas detecting instrument calibrating installation of the utility model；
Fig. 2 is a kind of right view of gas detecting instrument calibrating installation of the utility model；
Fig. 3 is a kind of cross-sectional view of the endless glide of gas detecting instrument calibrating installation of the utility model.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description include: standard gas source 1, pipeline 2, pressure gauge 3, mass flow controller 4, into
Air valve 5, aspiration pump 6, annular gas tank 7, air inlet 8, dome 9, seal washer 10, support rod 11, single-chip microcontroller 12, motor 13, the
One shaft 14, the first magnet 15, endless glide 16, sliding block 17, the second magnet 18, gas sensor 19, clockwork spring 20, second
Shaft 21, fan 22, gas concentration unit 23, gas detecting instrument 24, gas outlet 25, air outlet valve 26.
Embodiment is substantially as shown in Figure 1, Figure 2 and Figure 3: a kind of gas detecting instrument calibrating installation, including 1 He of standard gas source
Gas detecting instrument 24, standard gas source 1 provide different types of calibrating gas, the outlet side connection of gas detecting instrument 24 for the present apparatus
There is gas concentration unit 23, pipeline 2 is provided between standard gas source 1 and gas detecting instrument 24, is disposed with pressure on pipeline 2
Table 3, mass flow controller 4, intake valve 5, annular gas tank 7, air outlet valve 26 and aspiration pump 6, annular gas tank 7 include passing through pipeline
2 air inlets 8 being connected to intake valve 5 and the gas outlet 25 being connected to air outlet valve 26, left side, front side and the rear side of annular gas tank 7
Air inlet 8 there are three being respectively provided with, for providing the calibrating gas of more variety classes, various concentration, with the reality of stiffening device
With property, air inlet 8 is mating to be provided with dome 9, and dome 9 is threadedly coupled with air inlet 8, sets between 7 outer wall of dome 9 and annular gas tank
It is equipped with seal washer 10, to improve the leakproofness of the annular gas tank 7 when not in use of air inlet 8, gas outlet 25 is funnel-shaped, Ke Yizeng
Big outlet area, reinforces the mobility of gas；Annular gas tank 7 is provided with support rod 11, and the both ends of support rod 11 are fixedly connected on
The inner sidewall of annular gas tank 7, single-chip microcontroller 12 and motor 13 are fixedly connected on support rod 11, and single-chip microcontroller 12 is single using 51 series
Piece machine 12 is electrically connected mass flow controller 4, intake valve 5 and air outlet valve 26, the output shaft of motor 13 and is fixedly connected with first
Shaft 14, first rotating shaft 14 are rotated around the output shaft of motor 13, and first rotating shaft 14 is provided with the first magnetic far from the end of output shaft
Iron 15 is fixedly connected with endless glide 16 on the side wall of the inside of annular gas tank 7, and the cross section of endless glide 16 is T-shaped, annular
The sliding block 17 to match is slidably connected on sliding rail 16, cross section is that the endless glide 16 of T-type avoids the sliding block 17 to match
It falling, strengthens the stability of device, 17 bottom of sliding block is provided with the second magnet 18 to attract each other with the first magnet 15, and first
Shaft 14 does circle along endless glide 16 in annular gas tank 7 by the mating band movable slider 17 of the first magnet 15 and the second magnet 18
Zhou Yundong strengthens the air flow property in annular gas tank 7, avoids stratification of hot gas, makes the more uniform of gas mixing, increases
The accuracy of present apparatus calibration is provided with one group of gas sensor 19 on sliding block 17, and gas sensor 19 is for surveying annular gas
Real-time concentration information and single-chip microcontroller 12 is sent information in case 7, gas sensor 19 is moved with sliding block 17, passes gas
Sensor 19 can survey concentration in each position in annular gas tank 7, can judge whether gas is abundant by the variation of real-time concentration
Mixing, strengthens the practicability of the present apparatus；It is additionally provided on side wall between the annular 7 two adjacent air inlets 8 in inside of gas tank
Clockwork spring 20 and the second shaft 21, one end of clockwork spring 20 are fixedly connected in the internal side wall of annular gas tank 7, the other end
It is connected in the second shaft 21, one end of the second shaft 21 is rotatably connected in the internal side wall of annular gas tank 7, other end connection
There is fan 22, to reinforce the mobility of gas in annular gas tank 7, improves the accuracy of the measurement of gas sensor 19.
When specific works, calibration personnel opens aspiration pump 6 for the redundancy gas extraction in device to gas concentration unit 23,
Gas detecting instrument 24 is set to be in zero point state, calibration personnel again arrives the information inputs such as the concentration of required calibrating gas, flow
In single-chip microcontroller 12 and pressure gauge 3 is adjusted, single-chip microcontroller 12 starts to execute program, while opening motor 13, and the output shaft of motor 13 turns
Dynamic that first rotating shaft 14 is driven to rotate around the output shaft of motor 13, the first magnet 15 and the second magnet 18 of 14 front end of first rotating shaft are matched
Conjunction makes sliding block 17 move in a circle along endless glide 16.When single-chip microcontroller 12 receives the current dense of gas concentration sensor transmission
Spend the current integrated flow information of information and the transmission of mass flow controller 4: if existing concentration information is 0, single-chip microcontroller 12 is controlled
Intake valve 5 processed is opened, and required calibrating gas flows to annular gas tank 7, and the fan 22 of the air inlet 8 of annular gas tank 7 is subjected to entering
The impact of gas rotate backward, make 20 accumulation of energy of clockwork spring；If current integrated flow information reaches preset integrated flow letter
When breath, single-chip microcontroller 12 controls intake valve 5 and closes, and clockwork spring 20 releases energy and fan 22 is driven to rotate；After waiting 10 seconds, if
When existing concentration information is consistent with preset concentration information or error is less than 2%, 12 air outlet valve of single-chip microcontroller is opened, if existing concentration
Information and preset concentration information are greater than 2%, and single-chip microcontroller 12 is alarmed.Gas after being sufficiently mixed is from the gas outlet of annular gas tank 7
Outflow, the air inlet 8 of gas detecting instrument 24 is transported to by aspiration pump 6, then calibration personnel starts to gas detecting instrument
Calibration is carried out, gas flows to gas concentration unit 23 from the gas outlet of gas detecting instrument after calibration.
Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme
It does not describe excessively, it is noted that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence
The effect and patent practicability that the utility model is implemented.This application claims protection scope should be with the content of its claim
Subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (6)
1. a kind of gas detecting instrument calibrating installation, including standard gas source (1) and gas detecting instrument (24), the standard gas source
(1) it is provided between gas detecting instrument (24) pipeline (2), it is characterised in that: be disposed with pressure gauge on the pipeline (2)
(3), mass flow controller (4), intake valve (5), annular gas tank (7), air outlet valve (26) and aspiration pump (6), the annular gas
Case (7) is provided with support rod (11), is provided with single-chip microcontroller (12) and motor (13), the single-chip microcontroller on the support rod (11)
(12) it is electrically connected respectively with mass flow controller (4), intake valve (5) and air outlet valve (26), the output shaft of the motor (13)
It is connected with first rotating shaft (14), the end of output shaft of the first rotating shaft (14) far from motor (13) is provided with the first magnet
(15)；Being internally provided with endless glide (16) for annular gas tank (7), slidably connects sliding block on the endless glide (16)
(17), sliding block (17) bottom is provided with the second magnet (18) to attract each other with the first magnet (15), first magnet
(15) band movable slider (17) is used to the second magnet (18) move along endless glide (16), be provided with gas on the sliding block (17)
The information of acquisition is sent to single-chip microcontroller (12) by sensor (19), the gas sensor (19), and the single-chip microcontroller (12) is used for
Information processing and control valve opening and closing.
2. a kind of gas detecting instrument calibrating installation according to claim 1, it is characterised in that: the single-chip microcontroller (12) connects
The current integrated flow information that the existing concentration information and mass flow controller for receiving gas concentration sensor transmission are sent: if
When existing concentration information is 0, single-chip microcontroller (12) controls intake valve (5) and opens；If current integrated flow information reaches preset tired
When counting flow information, single-chip microcontroller (12) controls intake valve (5) and closes；Wait 10 seconds after, if existing concentration information with it is preset dense
When spending that information is consistent or error is less than 2%, the air outlet valve (26) of single-chip microcontroller (12) is opened, if existing concentration information with it is preset dense
It spends information and is more than or equal to 2%, single-chip microcontroller alarm.
3. a kind of gas detecting instrument calibrating installation according to claim 2, it is characterised in that: the endless glide (16)
Cross section be T-type, what the sliding block (17) can match is assemblied on endless glide (16).
4. a kind of gas detecting instrument calibrating installation according to claim 1, it is characterised in that: the annular gas tank (7)
Including the air inlet (8) being connected to intake valve (5) by pipeline (2), clockwork spring (20) is provided at air inlet (8) and can
The second shaft (21) of rotation, one end of the clockwork spring (20) are connect with the second shaft (21), the other end of clockwork spring
Affixed with the side wall of annular gas tank (7), second shaft (21) is provided with fan (22).
5. a kind of gas detecting instrument calibrating installation according to claim 4, it is characterised in that: the annular gas tank (7)
Outer wall be provided with multiple air inlets (8), each air inlet (8) is threaded with dome (9), the dome (9) and annular
Seal washer (10) are provided between the outer wall of gas tank (7).
6. a kind of gas detecting instrument calibrating installation according to claim 1, it is characterised in that: the annular gas tank (7)
Including the gas outlet (25) being connected to by pipeline (2) with air outlet valve (26), the gas outlet (25) is funnel-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822251342.7U CN209656652U (en) | 2018-12-29 | 2018-12-29 | A kind of gas detecting instrument calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822251342.7U CN209656652U (en) | 2018-12-29 | 2018-12-29 | A kind of gas detecting instrument calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209656652U true CN209656652U (en) | 2019-11-19 |
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ID=68519546
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822251342.7U Expired - Fee Related CN209656652U (en) | 2018-12-29 | 2018-12-29 | A kind of gas detecting instrument calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209656652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954659A (en) * | 2019-12-04 | 2020-04-03 | 日照市计量测试所 | Intelligent gas distribution system for online detection |
| CN112782357A (en) * | 2020-12-22 | 2021-05-11 | 汉威科技集团股份有限公司 | Automatic calibration method and device for gas sensor |
-
2018
- 2018-12-29 CN CN201822251342.7U patent/CN209656652U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954659A (en) * | 2019-12-04 | 2020-04-03 | 日照市计量测试所 | Intelligent gas distribution system for online detection |
| CN110954659B (en) * | 2019-12-04 | 2022-02-01 | 日照市计量测试所 | Intelligent gas distribution system for online detection |
| CN112782357A (en) * | 2020-12-22 | 2021-05-11 | 汉威科技集团股份有限公司 | Automatic calibration method and device for gas sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 Termination date: 20201229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |