CN217688824U - Automatic switching, sampling and purifying device for multi-concentration calibration gas of tail gas analyzer - Google Patents
Automatic switching, sampling and purifying device for multi-concentration calibration gas of tail gas analyzer Download PDFInfo
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- CN217688824U CN217688824U CN202221229031.0U CN202221229031U CN217688824U CN 217688824 U CN217688824 U CN 217688824U CN 202221229031 U CN202221229031 U CN 202221229031U CN 217688824 U CN217688824 U CN 217688824U
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Abstract
A tail gas analyzer multi-concentration calibration gas automatic switching and sampling purification device comprises a control processing module, a standard gas control valve group and a purification processing valve group; the standard gas control valve group comprises a standard gas inlet interface, a standard gas control valve group and a standard gas outlet; the purification treatment valve group comprises a tail gas inlet interface, a single-double tail gas sampling switching valve, a sampling control valve, a three-way joint, a two-position five-way valve, a tail gas analyzer interface, a compressed air inlet and a fresh air interface; two tail gas inlet interfaces are arranged, and single-double exhaust switching is realized through control of a single-double tail gas sampling switching valve; the sampled tail gas is converged to the sampling control valve and the two-position five-way valve through the three-way joint and then is connected with a tail gas analyzer; the two-position five-way valve is simultaneously connected with the fresh air interface and the compressed air inlet. The tail gas analyzer can realize free switching of various calibration gases with different concentrations, leakage detection of the tail gas analyzer, purification of a tail gas analyzer exhaust sampling pipeline and single-double exhaust sampling switching in the tail gas analyzer calibration gas inspection and calibration process.
Description
Technical Field
The utility model relates to a tail gas analysis appearance field especially relates to a gaseous automatic switch-over and sample purifier are markd to tail gas analysis appearance multiconcentration.
Background
During the daily inspection of the tail gas analyzer, a specific concentration gas is required to be used for the analyzer inspection, if the specific concentration gas does not pass through the analyzer, other concentration gases are required to be used for calibrating the analyzer, and after the calibration is finished, the standard gas is required to be used for the inspection again. The complicated operations of mistakenly receiving gas with non-specified concentration and frequently disassembling and assembling the gas cylinder are easy to occur in the operation process. On the other hand, in the actual test process, the tail gas sampling tube of the tail gas analyzer has the influence of exhaust pollutant residue and condensed water accumulation and measurement value in continuous use, and the influence is eliminated by manually removing the sampling tube for purging. The above problems increase the labor intensity of the field operator and the increased possibility of malfunction and failure.
Disclosure of Invention
An object of the utility model is to solve the above-mentioned problem among the prior art, provide a gaseous automatic switch-over of tail gas analysis appearance multi-concentration calibration and sampling tube purifier, be applied to the daily inspection of tail gas analysis appearance and the sampling tube in the use purifies, can realize that tail gas analysis appearance mark gas inspection, multiple different concentrations calibration gas freely switch over, tail gas analysis appearance leak detection, tail gas analysis appearance exhaust sampling pipeline purifies, single two exhaust sampling switch-over.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a tail gas analyzer multi-concentration calibration gas automatic switching and sampling purification device comprises a control processing module, a standard gas control valve group and a purification processing valve group;
the control processing module comprises a power supply and a control module, the power supply supplies power to the control module, the control module is connected with a tail gas analyzer or an upper computer through a communication interface, and controls the standard gas control valve bank and the purification processing valve bank to act through an output interface;
the standard gas control valve group comprises a standard gas inlet interface, a standard gas control valve group and a standard gas outlet; the standard gas outlet is connected with a tail gas analyzer; the standard gas control valve group is arranged between the standard gas inlet interface and the standard gas outlet and is used for controlling the opening and closing of the standard gas;
the purification treatment valve bank comprises a tail gas inlet interface, a single-double tail gas sampling switching valve, a sampling control valve, a three-way joint, a two-position five-way valve, a tail gas analyzer interface, a compressed air inlet and a fresh air interface; two tail gas inlet interfaces are arranged, and single-double exhaust switching is realized through control of a single-double tail gas sampling switching valve; the sampled tail gas is converged to the sampling control valve and the two-position five-way valve through the three-way joint and then is connected with a tail gas analyzer; the two-position five-way valve is simultaneously connected with a fresh air interface and a compressed air inlet.
The standard gas inlet interfaces are provided with a plurality of standard gas inlet interfaces which are respectively connected with standard gases with different concentrations, and the standard gas control valve group is provided with two-way electromagnetic valves which are in one-to-one correspondence with the plurality of standard gas inlet interfaces.
The standard gas inlet interface is provided with 5, correspondingly, the two-way electromagnetic valve is also provided with 5.
The standard gas control valve group is also provided with a confluence block, a throttle valve and an electromagnetic valve; one end of the standard gas control valve group is connected to the standard gas inlet interface, and the other end of the standard gas control valve group is connected to the confluence block; the converging block connects the standard gas loop with the inlet of the throttle valve, the outlet of the throttle valve is connected with one end of the electromagnetic valve, and the other end of the electromagnetic valve is connected with the standard gas outlet.
The electromagnetic valve of the standard gas control valve group adopts a three-way electromagnetic valve, the standard gas control valve group is also provided with a fresh air inlet, and fresh air passes through the three-way electromagnetic valve through the fresh air inlet and enters the tail gas analyzer through a standard gas outlet.
The single-double tail gas sampling switching valve adopts a two-way electromagnetic valve, wherein one tail gas inlet connector is connected with the two-way electromagnetic valve and then connected with a three-way joint, and the other tail gas inlet connector is directly connected with the three-way joint.
Compared with the prior art, the utility model discloses technical scheme obtains beneficial effect is:
1. the automatic switching of a plurality of standard gases with different concentrations in daily inspection/calibration of the tail gas analyzer can be realized according to the inspection/calibration flow;
2. through the throttling characteristic of the throttling valve in the standard gas control valve group, under the condition of reasonable throttling opening, the influence of the pressure change and the flow change at the rear end of the throttling valve on the pressure change at the front end is reduced, and the allowable upper limit of the standard gas cylinder outlet pressure regulation deviation is increased, so that the difficulty of pressure regulation of operators is simplified.
3. Through utilizing the actual inside of tail gas test clearance, outside purification, reducing exhaust analysis appearance filtration consumptive material's change frequency effectively, reduce operating personnel's operation intensity.
4. Through automatic leakage detection function, get rid of the inside leakage of equipment, reduce the unusual mistake of reporting of equipment that artifical shutoff maloperation brought, simplify manual operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a rear view structure diagram of the present invention.
Reference numerals: a control processing module 1; a No. 1 standard gas control valve 2; a No. 2 standard gas control valve 3; a No. 3 standard gas control valve 4; a No. 4 standard gas control valve 5; a No. 5 standard control valve 6; a junction block 7; a throttle valve 8; a three-way electromagnetic valve 9; a sampling control valve 10; a two-position five-way valve 11; a single and double tail gas sampling switching valve 12; a communication interface 13; a power supply interface 14; number 1 standard gas port 15; a No. 2 standard gas port 16; a No. 3 air marking port 17; number 4 standard gas port 18; a No. 5 standard gas port 19; fresh air inlet No. 1 20; number 2 fresh air inlet 21; a compressed air inlet 22; a standard gas outlet 23; a tail gas outlet 24; tail gas inlet 25 No. 1; and a number 2 tail gas inlet 26.
Detailed Description
In order to make the technical problem, technical solution and beneficial effects of the present invention to be solved clearer and more obvious, the following description is made in detail by combining the accompanying drawings and embodiments.
As shown in fig. 1 to 3, the present embodiment includes a control processing module 1, a standard gas control valve set, and a purge processing valve set.
The control processing module 1 comprises a power supply and a control module, the power supply supplies power to the control module, the control module can be communicated with the tail gas analyzer through a communication interface 13, and the control module controls the valve group to act through an output interface. The control module also has the capability of communicating with an upper computer independently.
The standard gas control valve group comprises a standard gas inlet interface, a standard gas control valve group, a confluence block 7, a throttle valve 8, a three-way electromagnetic valve 9, a standard gas outlet 23 and a No. 1 fresh air inlet 20. One end of the standard gas control valve group is connected to a standard gas inlet interface through a hose, and the other end of the standard gas control valve group is connected to the confluence block 7. The standard gas loop is connected with the inlet of the throttle valve 8 by the confluence block 7, the outlet of the throttle valve 8 is connected with one end of the three-way electromagnetic valve 9 by a pipeline, the No. 1 fresh air inlet 20 is connected with the other end of the three-way electromagnetic valve 9, the outlet of the three-way electromagnetic valve 9 is connected with the standard gas outlet 23, and the standard gas outlet 23 is connected with the tail gas analyzer. Specifically, the present embodiment is provided with 5 standard gas inlet ports connected to standard gases with different concentrations, which are respectively a No. 1 standard gas port 15, a No. 2 standard gas port 16, a No. 3 standard gas port 17, a No. 4 standard gas port 18, and a No. 5 standard gas port 19, and correspondingly, the standard gas control valve group is provided with 5 standard gas control valves, which are respectively a No. 1 standard gas control valve 2, a No. 2 standard gas control valve 3, a No. 3 standard gas control valve 4, a No. 4 standard gas control valve 5, and a No. 5 standard gas control valve 6; the standard gas control valve adopts a two-way electromagnetic valve, and the standard gas with the appointed concentration is controlled to be opened and closed through the standard gas control valve.
The valves are mutually switched on and off, so that the purposes of accurately controlling each path of standard gas to enter the tail gas analyzer and accurately controlling fresh air to enter the tail gas analyzer at different time intervals are achieved. The throttle valve 8 is arranged before the standard gas enters the tail gas analyzer through the standard gas outlet 23, so that calibration failure or calibration errors caused by gas flow fluctuation due to poor stability of the external gas cylinder pressure reducing valve are effectively reduced. A three-way electromagnetic valve 9 is arranged in front of a standard gas outlet 23 connected with the tail gas analyzer, so that fresh air can enter the tail gas analyzer from the standard gas outlet 23 after the standard gas is cut off.
The purification treatment valve group comprises a tail gas inlet interface, a single and double tail gas sampling switching valve 12, a sampling control valve 10, a three-way joint, a two-position five-way valve 11, a tail gas analyzer interface, a No. 2 fresh air inlet 21 and a compressed air inlet 22.
The tail gas inlet interfaces are two, are No. 1 tail gas inlet 25 and No. 2 tail gas inlet 26, are respectively connected to the tail gas sampling probe hose, and are controlled by the single-double tail gas sampling switching valve 12 to realize single-double exhaust switching. The sampled tail gas is converged to the sampling control valve 10 and the two-position five-way valve 11 through the three-way joint and then is connected with a tail gas analyzer interface. The two-position five-way valve 11 is also connected with a No. 2 fresh air inlet 21 and a compressed air inlet 22 through hoses.
Specifically, the single-double tail gas sampling switching valve 12 adopts a two-way electromagnetic valve, wherein one of the tail gas inlet ports is connected with the two-way electromagnetic valve and then connected with a three-way joint, and the other of the tail gas inlet ports is directly connected with the three-way joint. In this embodiment, two exhaust gas inlet interfaces are provided, and the single-double exhaust sampling switching valve 12 can freely control the opening and closing of one of the exhaust gas sampling interfaces, so as to realize the free switching of the exhaust gas sampling of the single-double exhaust vehicle. The sampling control valve 10 is arranged in front of the tail gas outlet 24 connected with the tail gas analyzer, so that the sampling pipeline can be connected and completely closed before the sampling pipeline is connected with the sampling inlet of the tail gas analyzer.
In the actual work, according to actual measurement vehicle vent-pipe type, through control module control, the connection pattern is switched to single two tail gas sampling diverter valves of drive, with tail gas via the sampling control valve, the valves, tail gas analyzer interface, send into tail gas analyzer and carry out the analysis, during the tail gas test result, the system gives control module according to state send instruction, control module control valves switches to purifying mode, fresh air sends into tail gas analyzer interface through the valves, realize the inside purification of tail gas analysis, compressed air passes through the valves, three way connection, single two tail gas sampling diverter valves, through tail gas air inlet interface and external tail gas sampling hose, accomplish purging of external pipeline, purify.
The purification treatment valve bank can realize another application: after the analyzer is started, when the requirement of internal pipeline leakage inspection is detected, the sampling control valve is triggered to act through the control module, the external tail gas sampling pipeline can be completely cut off, and the air inlet interface of the tail gas analyzer is blocked, so that automatic leakage detection is realized.
The utility model discloses possess that the analysis appearance is markd, single two exhaust sampling switch, automatic inside leak testing, tail gas sample pipeline blowback purification performance, specifically use as follows:
1. before the utility model is used, the communication interface 13 can be connected with a compatible tail gas analyzer or an upper computer, the power interface 14 is connected with a power supply, and the No. 1 mark gas port 15, the No. 2 mark gas port 16, the No. 3 mark gas port 17, the No. 4 mark gas port 18 and the No. 5 mark gas port 19 are respectively connected with 5 bottles of mark gases with different concentrations; the compressed air inlet 22 is connected with a compressed air supply pipeline; the standard gas outlet 23 is connected with a calibration inlet of the analyzer; the tail gas outlet 24 is connected with a tail gas sampling interface of a tail gas analyzer; the No. 1 tail gas inlet 25 and the No. 2 tail gas inlet 26 are connected with a tail gas sampling probe.
2. The implementation mode of the calibration function of the analyzer is as follows: before the tail gas analyzer enters a calibration state, fresh air enters the tail gas analyzer through a No. 1 fresh air inlet 20, passes through the three-way electromagnetic valve 9 and enters the tail gas analyzer through a standard gas outlet 23 to clean the interior of the tail gas analyzer and enable the tail gas analyzer to complete zero setting. After the tail gas analyzer enters a calibration state, a control signal is sent to the control processing module 1 through the communication interface 13 by the tail gas analyzer or an upper computer, after signal processing is received, specified electromagnetic valves in the No. 1 standard control valve 2, the No. 2 standard control valve 3, the No. 3 standard control valve 4, the No. 4 standard control valve 5 and the No. 5 standard control valve 6 are controlled to be opened, and standard gas enters the tail gas analyzer through the opened control valves, the confluence block 7, the throttle valve 8, the three-way electromagnetic valve 9 and the standard gas outlet 23. The tail gas analyzer or the upper computer can switch the opening and closing of the designated standard gas control valve at any time through a control instruction according to the real-time state. Thereby reducing the manual misoperation in the calibration process. After the calibration of the tail gas analyzer is finished, the No. 1 standard control valve 2, the No. 2 standard control valve 3, the No. 3 standard control valve 4, the No. 4 standard control valve 5 and the No. 5 standard control valve 6 are all closed. The standard gas does not generate unnecessary leakage and waste.
3. When the single-double exhaust sampling switching function works, an analyzer or an upper computer sends an instruction to the control processing module 1 through the communication interface 13 according to the type of the vehicle, and the control processing module 1 automatically controls the single-double exhaust sampling switching valve 12 to be opened or closed. When the single and double exhaust sampling switching valves 12 are opened. The tail gas of the double exhaust pipe vehicle is obtained by sampling through the two sampling probes, and is conveyed to a tail gas analyzer through a No. 1 tail gas inlet 25, a No. 2 tail gas inlet 26, a single-double tail gas sampling switching valve 12, a sampling control valve 10, a two-position five-way valve 11 and a tail gas outlet 24, so that the tail gas analyzer is assisted in completing gas sampling.
4. When the automatic internal leakage detection function works, the tail gas analyzer or the upper computer sends an internal leakage detection instruction to the control processing module 1 through the communication interface 13, and the control processing module 1 controls the sampling control valve 10 to be closed. At the moment, the tail gas instrument and the sampling probe pipeline are in a cut-off state. And analyzing to check the internal leakage, and after the leakage check is passed, the analyzer or the upper computer sends a command to open the sampling control valve 10. And recovering the sampling state of the tail gas analyzer.
5. The tail gas pipeline blowback purification performance during operation, tail gas analyzer or host computer send the blowback instruction through communication interface 13 and give control processing module 1, control processing module 1 receives and indicates the back, control two five-way valve 11 work, compressed air passes through compressed air inlet 22, two five-way valve 11, sampling control valve 10, single two tail gas sampling diverter valve 12, no. 1 tail gas inlet 25, no. 2 tail gas inlets 26 get into sampling hose and sampling probe, sweep sampling hose and probe, blow off the sampling pipeline with inside residual steam and pollutant, the pipeline blowback of sampling purifies completely. Fresh air enters the tail gas analyzer through the No. 2 fresh air inlet 21, the two-position five-way valve 11 and the tail gas outlet 24, and purges the internal pipeline and the platform of the tail gas analyzer, so that the back-blowing purification of the internal pipeline system of the tail gas analyzer is completed.
Claims (6)
1. The utility model provides a tail gas analysis appearance multi-concentration calibration gas automatic switch-over and sample purifier which characterized in that: the device comprises a control processing module, a standard gas control valve bank and a purification processing valve bank;
the control processing module comprises a power supply and a control module, the power supply supplies power to the control module, the control module is connected with a tail gas analyzer or an upper computer through a communication interface, and controls the standard gas control valve bank and the purification processing valve bank to act through an output interface;
the standard gas control valve group comprises a standard gas inlet interface, a standard gas control valve group and a standard gas outlet; the standard gas outlet is connected with a tail gas analyzer; the standard gas control valve group is arranged between the standard gas inlet interface and the standard gas outlet and is used for controlling the opening and closing of the standard gas;
the purification treatment valve bank comprises a tail gas inlet interface, a single-double tail gas sampling switching valve, a sampling control valve, a three-way joint, a two-position five-way valve, a tail gas analyzer interface, a compressed air inlet and a fresh air interface; two tail gas inlet interfaces are arranged, and single-double exhaust switching is realized through control of a single-double tail gas sampling switching valve; the sampled tail gas is converged to the sampling control valve and the two-position five-way valve through the three-way joint and then is connected with a tail gas analyzer; and the two-position five-way valve is simultaneously connected with a fresh air interface and a compressed air inlet.
2. The automatic switching and sampling purification device for multi-concentration calibration gas of the tail gas analyzer as claimed in claim 1, wherein: the standard gas inlet interfaces are provided with a plurality of standard gas inlet interfaces which are respectively connected with standard gases with different concentrations, and the standard gas control valve group is provided with two-way electromagnetic valves which are in one-to-one correspondence with the plurality of standard gas inlet interfaces.
3. The automatic switching and sampling purification device for multi-concentration calibration gas of the tail gas analyzer as claimed in claim 2, wherein: the standard gas inlet interface is provided with 5, correspondingly, the two-way electromagnetic valve is also provided with 5.
4. The automatic switching and sampling purification device for the multi-concentration calibration gas of the tail gas analyzer as claimed in claim 1, wherein: the standard gas control valve group is also provided with a confluence block, a throttle valve and an electromagnetic valve; one end of the standard gas control valve group is connected to the standard gas inlet interface, and the other end of the standard gas control valve group is connected to the confluence block; the converging block connects the standard gas loop with the inlet of the throttle valve, the outlet of the throttle valve is connected with one end of the electromagnetic valve, and the other end of the electromagnetic valve is connected with the standard gas outlet.
5. The automatic switching and sampling purification device for the multi-concentration calibration gas of the tail gas analyzer as claimed in claim 4, wherein: the electromagnetic valve of the standard gas control valve group adopts a three-way electromagnetic valve, the standard gas control valve group is also provided with a fresh air inlet, and fresh air passes through the three-way electromagnetic valve through the fresh air inlet and enters the tail gas analyzer through a standard gas outlet.
6. The automatic switching and sampling purification device for the multi-concentration calibration gas of the tail gas analyzer as claimed in claim 1, wherein: the single-double tail gas sampling switching valve adopts a two-way electromagnetic valve, wherein one tail gas inlet interface is connected with the two-way electromagnetic valve and then connected with a three-way joint, and the other tail gas inlet interface is directly connected with the three-way joint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221229031.0U CN217688824U (en) | 2022-05-19 | 2022-05-19 | Automatic switching, sampling and purifying device for multi-concentration calibration gas of tail gas analyzer |
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| CN202221229031.0U CN217688824U (en) | 2022-05-19 | 2022-05-19 | Automatic switching, sampling and purifying device for multi-concentration calibration gas of tail gas analyzer |
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| CN217688824U true CN217688824U (en) | 2022-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114924040A (en) * | 2022-05-19 | 2022-08-19 | 厦门海腾发动机测试设备有限公司 | Automatic switching and sampling tube purifying device for multi-concentration calibration gas of tail gas analyzer |
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2022
- 2022-05-19 CN CN202221229031.0U patent/CN217688824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114924040A (en) * | 2022-05-19 | 2022-08-19 | 厦门海腾发动机测试设备有限公司 | Automatic switching and sampling tube purifying device for multi-concentration calibration gas of tail gas analyzer |
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