CN217403916U - Multi-inlet single-outlet gas multi-point sampling control device - Google Patents
Multi-inlet single-outlet gas multi-point sampling control device Download PDFInfo
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- CN217403916U CN217403916U CN202221546691.1U CN202221546691U CN217403916U CN 217403916 U CN217403916 U CN 217403916U CN 202221546691 U CN202221546691 U CN 202221546691U CN 217403916 U CN217403916 U CN 217403916U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model relates to a multi-inlet single-outlet gas multi-point sampling control device, which comprises a first air inlet component, a second air inlet component, a first air pump, a second air pump, a plurality of sampling air inlets, a purging air inlet and an air outlet, wherein the first air inlet component and the second air inlet component respectively comprise a plurality of branch sampling pipelines, a purging air inlet pipeline, a plurality of sampling electromagnetic valves, a purging electromagnetic valve and a first public pipeline and a second public pipeline, and each branch sampling pipeline and the purging air inlet pipeline are communicated with the air inlets of the first public pipeline and the second public pipeline; the air outlets of the first and second common pipelines are respectively communicated with the air inlets of the first and second air pumps; the exhaust ports of the first air pump and the second air pump are respectively communicated with the air outlet through a first exhaust pipeline and a second exhaust pipeline. The utility model can save the air exhaust waiting time and the blowing waiting time by alternately sampling the two air exhaust pumps and the two air inlet components, thereby greatly improving the sampling efficiency; meanwhile, purging is carried out firstly and then sampling is carried out, each branch sampling pipeline can be sealed independently, and the measurement precision can be greatly improved; the equipment utilization rate is high.
Description
Technical Field
The utility model relates to a gaseous sampling detection technical field, especially a gaseous multiple spot sampling control device of single play advances more.
Background
In scientific research or environmental greenhouse gas detection projects, sampling is often required to be carried out from a plurality of gas sampling points, and then a specific sampling point is selected and sampled into a gas analyzer for analysis according to a specific sequence. The existing gas sampling device mainly has the following defects: 1) the sampling efficiency is low because the sampling distance of part of sampling points is long, so that the time for the instrument to wait for pumping the sample is too long; 2) in some scientific research projects, the gas quantity of greenhouse gas generated by a tested plant is small, and continuous supply of sample gas cannot be realized, so that the sampling is difficult, the time is long, and the efficiency is low; 3) the residual gas in the common line has a great influence on the measurement of ppb level, resulting in a decrease in measurement accuracy. In order to solve the problems, the application designs a multi-inlet single-outlet gas multi-point sampling control device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective is to overcome prior art's shortcoming, provides a gaseous multiple spot sampling control device of single play advances more, and the sampling is in turn adopted to the double pump, and sweeps earlier the back sampling, can sparingly bleed latency and sweep latency, improves sampling efficiency greatly, promotes measurement accuracy, and rate of equipment utilization is high.
The utility model adopts the following technical scheme:
a multi-inlet single-outlet gas multi-point sampling control device comprises a first air inlet assembly, a second air inlet assembly, a first air pump, a second air pump, a plurality of sampling air inlets, a purging air inlet and an air outlet, wherein the first air inlet assembly and the second air inlet assembly respectively comprise a plurality of branch sampling pipelines which are communicated with the sampling air inlets in a one-to-one correspondence mode, a purging air inlet pipeline which is communicated with the purging air inlets in a corresponding mode, an electromagnetic valve group and a first public pipeline and a second public pipeline which are communicated with the branch sampling pipelines and the purging air inlet pipeline respectively, the electromagnetic valve group comprises a plurality of sampling electromagnetic valves and a purging electromagnetic valve which are connected to the branch sampling pipelines and the purging air inlet pipeline in a one-to-one correspondence mode and used for controlling the connection and disconnection of air paths between the branch sampling pipelines and the purging air inlet pipeline and the air inlets of the first public pipeline and the second public pipeline; the air outlet of a first common pipeline of the first air inlet assembly and the air outlet of a second common pipeline of the second air inlet assembly are communicated with the air inlet of the first air pump; the exhaust ports of the first air pump and the second air pump are respectively communicated with the air outlet through a first exhaust pipeline and a second exhaust pipeline; the plurality of sampling air inlets are used for connecting gas sampling pipelines of different sampling points, the purging air inlets are used for connecting purging gas pipelines, and the air outlets are used for connecting air inlet pipelines of a gas analyzer; and the first public pipeline, the second public pipeline, the first exhaust pipeline and the second exhaust pipeline are respectively connected with a control electromagnetic valve for controlling the on-off of the gas circuit.
Furthermore, the multi-inlet single-outlet gas multi-point sampling control device further comprises two purging exhaust ports and two purging exhaust pipelines respectively communicated with the two purging exhaust ports, and the two purging exhaust pipelines are respectively communicated with the exhaust ports of the first air pump and the second air pump.
Furthermore, the multi-inlet single-outlet gas multi-point sampling control device further comprises a relay module and a server terminal, wherein the relay module is electrically connected with and controls the sampling electromagnetic valves, the purging electromagnetic valves, the control electromagnetic valves, the first air pump and the second air pump to be opened or closed, and the server terminal is in communication connection with the relay module and transmits control instructions to the relay module.
Furthermore, the multi-inlet single-outlet gas multi-point sampling control device further comprises a switch, wherein the switch is in communication connection with the relay module and provides a plurality of communication connection interfaces for realizing communication between the server terminal and the relay module.
Further, the communication connection interface is a network port.
Furthermore, the multi-inlet single-outlet gas multi-point sampling control device further comprises a switch power supply, and the switch power supply is used for converting alternating current into direct current to supply power for the electromagnetic valve group, the control electromagnetic valve, the first air pump, the second air pump and the relay module.
Furthermore, the sampling electromagnetic valve, the purging electromagnetic valve and the control electromagnetic valve are two-position two-way electromagnetic valves.
Furthermore, the multi-inlet single-outlet gas multi-point sampling control device further comprises a case, the plurality of sampling gas inlets, the purging gas inlet, the gas outlet and the network port are all arranged on the case, a power socket and a power switch are further arranged on the case, the power socket and the power switch are electrically connected with a switching power supply, and the electromagnetic valve bank, the control electromagnetic valve, the relay module, the switch and the switching power supply are all arranged in the case.
Further, the purge air inlet is connected with a nitrogen pipeline or a zero air pipeline.
Further, the server terminal is provided with a human-computer interface for human-computer interaction.
It is right from the above-mentioned description of the utility model discloses, compare with prior art, the beneficial effect of the utility model is that:
firstly, the utility model discloses a set up two air intake components and two aspiration pumps, and add a way on the basis of a plurality of sampling pipelines and sweep the pipeline, sample through two aspiration pumps and two air intake components in turn, when sampling a sampling point and sending into gas analyzer and carry out the analysis through an aspiration pump, can sweep the gas that electromagnetism valves and public pipeline remain earlier through another aspiration pump, and then pump the next sampling point sample gas to the gas outlet front end and wait to sample, realize the double-pump sampling, can save bleed latency and sweep latency, improve sampling efficiency and measurement accuracy greatly; meanwhile, different sampling air inlets are respectively communicated with a common pipeline through branch sampling pipelines, and each branch sampling pipeline is connected with an independent sampling electromagnetic valve, so that each sampling air inlet pipeline can be ensured to be respectively and independently sealed, the air tightness is ensured, the measurement precision can be further improved, and for sampling points which cannot continuously provide sample gas, a closed space can be provided for slow release of the sample gas, the waiting time is reduced, and the sampling efficiency is improved; and multiple sampling points are used for sampling alternately, so that the utilization rate of equipment can be greatly improved. The utility model discloses obtain the wide application on scientific research, coal mine spontaneous combustion detection, AMC semiconductor detection to very good effect has been obtained.
Second, by setting the switch, more communication connection interfaces can be provided for connecting the server terminal, and the use is more flexible.
Thirdly, simple structure, the extension of being convenient for, increase the sampling point then corresponding increase branch sampling pipeline and sampling solenoid valve can.
Drawings
Fig. 1 is a sectional view of a three-dimensional structure of a multi-inlet single-outlet gas multi-point sampling control device in embodiment 1 of the present invention;
fig. 2 is a perspective view of the overall structure of the multi-inlet single-outlet gas multi-point sampling control device according to embodiment 1 of the present invention;
fig. 3 is a back view of a multi-inlet single-outlet gas multi-point sampling control device according to embodiment 1 of the present invention;
fig. 4 is a schematic view of a gas circuit connection structure of a multi-inlet single-outlet gas multi-point sampling control device according to embodiment 1 of the present invention.
In the figure: 1. the air purifier comprises a case, 101, a bottom plate, 102, a front panel, 103, a rear panel, 2, a first air pump, 3, a second air pump, 4, a sampling air inlet, 5, a purging air inlet, 6, an air outlet, 7, a purging air outlet, 8, a switching power supply, 9, a relay module, 10, a switch, 11, a branch sampling pipeline, 12, a purging air inlet pipeline, 13, an electromagnetic valve bank, 14, a first public pipeline, 15, a second public pipeline, 16, a first exhaust pipeline, 17, a second exhaust pipeline, 18, an air analyzer, 19, a first purging exhaust pipeline, 20, a second purging exhaust pipeline, 21, a network port, 22, a three-in-one switch and 23, a standby port.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Example 1
Referring to fig. 1 to 4, the utility model discloses a gaseous multiple spot sampling control device of list play advances more, including quick-witted case 1, first air intake component, second air intake component, first aspiration pump 2, second aspiration pump 3, twelve sampling air inlets 4, sweep air inlet 5, gas outlet 6, two gas vents 7, switching power supply 8, relay module 9, server terminal and switch 10 that sweep.
The first air inlet assembly and the second air inlet assembly respectively comprise twelve branch sampling pipelines 11 which are communicated with the twelve sampling air inlets 4 in a one-to-one correspondence manner, a purging air inlet pipeline 12 which is communicated with the purging air inlets 5 in a corresponding manner, an electromagnetic valve group 13, and a first public pipeline 14 and a second public pipeline 15 which are communicated with the twelve branch sampling pipelines 11 and the purging air inlet pipeline 12 respectively, wherein the electromagnetic valve group 13 comprises twelve sampling electromagnetic valves and purging electromagnetic valves which are respectively connected to the twelve branch sampling pipelines 11 and the purging air inlet pipeline 12 in a one-to-one correspondence manner and used for controlling the connection and disconnection of air paths between the branch sampling pipelines 11 and the purging air inlet pipeline 12 and the air inlets of the first public pipeline 14 and the second public pipeline 15. The air outlet of a first common pipeline 14 of the first air inlet assembly and the air outlet of a second common pipeline 15 of the second air inlet assembly are communicated with the air inlet of the first air pump 2, and the air outlet of the second common pipeline is communicated with the air inlet of the second air pump 3; the exhaust ports of the first air suction pump 2 and the second air suction pump 3 are respectively communicated with the air outlet 6 through a first exhaust pipeline 16 and a second exhaust pipeline 17; the twelve sampling gas inlets 4 are used for connecting gas sampling pipelines of different sampling points, the purging gas inlet 5 is used for connecting a nitrogen pipeline or a zero air pipeline, and the gas outlet 6 is used for connecting a gas inlet pipeline of a gas analyzer 18. As shown in fig. 4, the first common line 14 and the second common line 15 of the first air intake assembly and the second air intake assembly, and the first exhaust line 16 and the second exhaust line 17 are respectively connected with control solenoid valves V1, V2, V3, V4, V5 and V6 for controlling the on-off of the air paths. The device also comprises a first purging exhaust pipeline 19 and a second purging exhaust pipeline 20 which are respectively communicated with the two purging exhaust ports 7, wherein the first purging exhaust pipeline 19 and the second purging exhaust pipeline 20 are respectively communicated with the exhaust ports of the first air pump 2 and the second air pump 3. The sampling electromagnetic valve, the purging electromagnetic valve and the control electromagnetic valve V1-V6 are two-position two-way electromagnetic valves, and are powered on and powered off.
The relay module 9 is electrically connected with and controls the opening or closing of each sampling electromagnetic valve, the purging electromagnetic valve, the control electromagnetic valves V1-V6, the first air pump 2 and the second air pump 3, and the server terminal is in communication connection with the relay module 9 and transmits a control instruction to the relay module 9. The switch 10 is communicatively connected to the relay module 9 and provides two network ports 21, the network ports 21 being used to connect servers to enable communication between the server terminals and the relay module 9. The server terminal is provided with a human-computer interface and used for human-computer interaction. The relay module 9 adopts the prior art, and realizes switching control through a communication protocol.
The switching power supply 8 is used for converting 220V alternating current into 24V direct current to supply power to the electromagnetic valve group 13, the control electromagnetic valves V1-V6, the first air pump 2, the second air pump 3 and the relay module 9.
Referring to fig. 1 to 4, the working principle of the present invention is: a user selects a measurement mode in a human-computer interface of a server terminal, the server terminal transmits a control command to the relay module 9 through the internet access 21, and the relay module 9 outputs a control signal to switch and control the on or off of each sampling electromagnetic valve, the purging electromagnetic valve, the control electromagnetic valves V1-V6, the first air pump 2 and the second air pump 3, so that gas sampling is carried out according to a set rule (sampling is carried out from a set sampling port in a set sequence). One of the specific control methods of this embodiment is as follows: as shown in fig. 4, after a user starts a task in the server terminal, after opening the purge solenoid valve, the control solenoid valves V2 and V5 of the first air intake module, the first air pump 2 is started to work, at this time, the gas analyzer 18 is started at the same time, and nitrogen or zero air enters from the purge air intake line 12 into the measurement chamber where the purge of the solenoid valve group I of the first air intake module, the first common line 14, the first exhaust line 16 and the gas analyzer 18 is started; after purging is finished, opening a sampling electromagnetic valve 1 corresponding to the sampling point 1 of the electromagnetic valve group I, closing the purging electromagnetic valve of the electromagnetic valve group I, and enabling the sample gas at the sampling point 1 to enter the gas analyzer 18 for analysis under the pumping of the first air pump 2; when the first air pump 2 works, after a purging electromagnetic valve and a control electromagnetic valve V3 of the second air inlet assembly are opened, the second air pump 3 is started, nitrogen or zero air enters from the purging air inlet pipeline 12, the purging electromagnetic valve group II and the second common pipeline 15 begin to be purged, and the nitrogen or zero air is discharged from the purging air outlet 7 through the second purging exhaust pipeline 20; after purging is finished, opening a sampling electromagnetic valve 2 of the electromagnetic valve group II corresponding to the sampling point 2, closing the purging electromagnetic valve of the electromagnetic valve group II, and pumping the sample gas of the sampling point 2 by the second air pump 3 to reach the front end of the gas outlet 6 and continuously circulate for sampling; after the gas analysis of the sampling point 1 is finished, closing the control electromagnetic valve V5, opening the control electromagnetic valve V6, and allowing the second air pump 3 to pump the sample gas of the sampling point 2 into the gas analyzer 18 for analysis; meanwhile, the purging electromagnetic valve of the electromagnetic valve group I is opened, the sampling electromagnetic valve 1 is closed, the first air pump 2 starts to pump nitrogen or zero air, the electromagnetic valve group I and the first public pipeline 14 are cleaned, and the nitrogen or zero air is exhausted from the purging exhaust port 7 through the first purging exhaust pipeline 19; after purging, open solenoid valve group I's sampling solenoid valve 3 that corresponds with sampling point 3, close solenoid valve group I's the solenoid valve that purges, first aspiration pump 2 begins the sample gas that extracts sampling point 3 and arrives 6 front ends in the gas outlet of first aspiration pump 2 and continuously circulate and wait for the sampling to analogize in the same way. Therefore, the first air pump 2 and the second air pump 3 are controlled to alternately sample, and the air pumping waiting time can be saved. The flow rates of the first air pump 2 and the second air pump 3 are larger than the flow rate of the air pump inside the gas analyzer 18.
Example 2
This example differs from example 1 in that: the first air pump and the second air pump adopt high-power air pumps, are large in size, are arranged outside the case 1, are suitable for long-distance sampling, and can be applied to coal mine gas detection sampling with the sampling distance exceeding 1000 meters.
Example 3
This example differs from example 1 in that: including sixty four sampling air inlets 4, it is first, the second air inlet subassembly includes respectively with sixty four branch sampling pipeline 11 of the 4 one-to-one intercommunication of sixty four sampling air inlets, with sweep the air inlet pipeline 12 that the air inlet 5 corresponds the intercommunication, solenoid valve group 13 reaches respectively with sixty four branch sampling pipeline 11 with sweep first public pipeline 14 and the second public pipeline 15 that the air inlet pipeline 12 is linked together, solenoid valve group 13 includes sixty four sampling solenoid valves and sweeps the solenoid valve, connect respectively on sixty four branch sampling pipeline 11 and sweep air inlet pipeline 12 one-to-one, be used for controlling each branch sampling pipeline 11 and sweep the break-make of the gas circuit between air inlet pipeline 12 and first public pipeline 14 and the 15 air inlets of second public pipeline.
The aforesaid is only the utility model discloses a three embodiment, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (10)
1. The utility model provides a gaseous multiple spot sampling controlling means that singly goes out of advancing more which characterized in that: the electromagnetic valve group comprises a plurality of sampling electromagnetic valves and purging electromagnetic valves which are respectively connected to the plurality of branch sampling pipelines and the purging air inlet pipeline in a one-to-one correspondence manner and used for controlling the on-off of air paths between each branch sampling pipeline and the air inlet of the purging air inlet pipeline and between each branch sampling pipeline and the air inlet of the first public pipeline and the air inlet of the second public pipeline; the air outlet of a first common pipeline of the first air inlet assembly and the air outlet of a second common pipeline of the second air inlet assembly are communicated with the air inlet of the first air pump; the exhaust ports of the first air pump and the second air pump are respectively communicated with the air outlet through a first exhaust pipeline and a second exhaust pipeline; the plurality of sampling air inlets are used for connecting gas sampling pipelines of different sampling points, the purging air inlets are used for connecting purging gas pipelines, and the air outlets are used for connecting air inlet pipelines of a gas analyzer; and the first public pipeline, the second public pipeline, the first exhaust pipeline and the second exhaust pipeline are respectively connected with a control electromagnetic valve for controlling the on-off of the gas circuit.
2. A multi-in single-out gas multi-point sampling control device as claimed in claim 1, wherein: the two purging exhaust pipelines are respectively communicated with the exhaust ports of the first air pump and the second air pump.
3. A multi-inlet single-outlet gas multi-point sampling control device as claimed in claim 1 or 2, wherein: the system is characterized by further comprising a relay module and a server terminal, wherein the relay module is electrically connected with and controls the sampling electromagnetic valves, the purging electromagnetic valves, the control electromagnetic valves, the first air pump and the second air pump to be opened or closed, and the server terminal is in communication connection with the relay module and transmits control instructions to the relay module.
4. A multi-in single-out gas multi-point sampling control device as claimed in claim 3, wherein: the server terminal further comprises a switch which is in communication connection with the relay module and provides a plurality of communication connection interfaces for realizing communication between the server terminal and the relay module.
5. A multi-in single-out gas multi-point sampling control device as claimed in claim 4, wherein: the communication connection interface is a network port.
6. A multi-in single-out gas multi-point sampling control device as claimed in claim 5, wherein: the system also comprises a switching power supply which is used for converting alternating current into direct current to supply power for the electromagnetic valve group, the control electromagnetic valve, the first air pump, the second air pump and the relay module.
7. A multi-in single-out gas multi-point sampling control device as claimed in claim 1, wherein: the sampling electromagnetic valve, the purging electromagnetic valve and the control electromagnetic valve are two-position two-way electromagnetic valves.
8. A multi-in single-out gas multi-point sampling control device as claimed in claim 6, wherein: still include quick-witted case, a plurality of sampling air inlets, sweep air inlet, gas outlet, net gape and all set up on quick-witted case, still be provided with power socket and switch on the quick-witted case, switch power is connected to power socket and switch power, electromagnetism valves, control solenoid valve, relay module, switch, switching power all set up in quick-witted incasement.
9. A multi-in single-out gas multi-point sampling control device as claimed in claim 1, wherein: the purge air inlet is connected with a nitrogen pipeline or a zero air pipeline.
10. A multi-in single-out gas multi-point sampling control device as claimed in claim 3, wherein: the server terminal is provided with a human-computer interface for human-computer interaction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221546691.1U CN217403916U (en) | 2022-06-20 | 2022-06-20 | Multi-inlet single-outlet gas multi-point sampling control device |
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| CN202221546691.1U CN217403916U (en) | 2022-06-20 | 2022-06-20 | Multi-inlet single-outlet gas multi-point sampling control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330369A (en) * | 2023-11-24 | 2024-01-02 | 广东广业投资集团有限公司 | Finite space gas sampling monitoring system and sampling monitoring method |
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2022
- 2022-06-20 CN CN202221546691.1U patent/CN217403916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330369A (en) * | 2023-11-24 | 2024-01-02 | 广东广业投资集团有限公司 | Finite space gas sampling monitoring system and sampling monitoring method |
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