CN208872571U - A kind of automatic sample mixing device of portable gas - Google Patents
A kind of automatic sample mixing device of portable gas Download PDFInfo
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- CN208872571U CN208872571U CN201821518885.4U CN201821518885U CN208872571U CN 208872571 U CN208872571 U CN 208872571U CN 201821518885 U CN201821518885 U CN 201821518885U CN 208872571 U CN208872571 U CN 208872571U
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- solenoid valve
- sample mixing
- gas circuit
- mixing device
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Abstract
The utility model provides a kind of automatic sample mixing device of portable gas, including sampling tube assembly, vacuum system, the sampling tube assembly is connected to by the first gas circuit and the second gas circuit with vacuum system, the sampling tube assembly includes vacuum pump, gas nozzle, it is connected between the vacuum pump and gas nozzle by the first solenoid valve and second solenoid valve in parallel, one port of the gas nozzle connects the first gas circuit, another port is exposed in air, the sampling pipe of the sampling tube assembly is connected to by third solenoid valve with the second gas circuit, the vacuum system is connected to by third gas circuit with analysis instrument, the third gas circuit is equipped with the 4th solenoid valve and aspiration pump.Tested gas is passed through analysis instrument after sample mixing, and the sampling period is continuous, and tested gas analysis result is accurate, and device is portable, applied widely.
Description
Technical field
The utility model belongs to gas monitoring techniques field, and in particular to a kind of automatic sample mixing device of portable gas.
Background technique
Currently, the industrial waste gas that generates of the industries such as petrochemical industry, bio-pharmaceuticals, metallurgical mining industry usually through decompression, cool down, remove
Enter monitoring analyzer device by pump suction mode after the processing such as wet, dedusting, current limliting to be analyzed, existing monitoring analyzer device is all
It is the sampling of " point " formula, that is, acquires a certain amount of gas per the period at regular intervals and analyzed, such as every 10 minutes
It acquires an exhaust gas to be analyzed, in view of the discontinuous limitation of analysis instrument sampling analysis process cycle, this " point " formula is surveyed
Amount mode is easy to keep measurement data fluctuation larger, it is difficult to really reflect the actual analysis data of tested gas.In addition, certain adopt
The limitation of sample environment, it has to go to sample and analyze using some portable equipment.Therefore, develop it is a kind of can both overcome it is existing
The defect for thering is the monitoring analyzer device sampling period discontinuously to cause measurement result inaccurate, and the energy various Environment features of portable convenient
Product is the art urgent problem to be solved.
Utility model content
The utility model provides a kind of automatic sample mixing device of portable gas, mainly solves existing monitoring analyzer device and adopts
The problem of sample period is discontinuous, influences tested gas analysis result.
The automatic sample mixing device of a kind of portable gas provided by the utility model, including sampling tube assembly, vacuum system, institute
It states sampling tube assembly to be connected to by the first gas circuit and the second gas circuit with vacuum system, the sampling tube assembly includes vacuum pump, gas
Mouth is connected between the vacuum pump and gas nozzle by the first solenoid valve and second solenoid valve in parallel, a gas of the gas nozzle
Mouthful the first gas circuit of connection, another port is exposed in air, and the sampling pipe of the sampling tube assembly passes through third solenoid valve and the
The connection of two gas circuits, the vacuum system are connected to by third gas circuit with analysis instrument, and the third gas circuit is equipped with the 4th electromagnetism
Valve and aspiration pump.
Preferably, the end of the sampling pipe connects filter.
Preferably, the sampling tube assembly has handle, the vacuum pump, the first solenoid valve, second solenoid valve, third electricity
Magnet valve is arranged at handle inner, and the gas nozzle is arranged in handle outer.
Preferably, second gas circuit is a heat tracing pipe.
Preferably, the vacuum system includes vacuum tank, the sample mixing mechanism being arranged in inside vacuum tank, is arranged in vacuum tank
External pressure and temp control system.
Preferably, filter is provided in the third gas circuit.
Preferably, first solenoid valve and second solenoid valve use two-position three-way valve, third solenoid valve and the 4th electromagnetism
Valve uses check valve.
The utility model has the beneficial effects that the utility model sample mixing device is able to achieve the continuous acquisition and storage of tested gas
It deposits, tested gas can be made to mix a period of time in sample mixing mechanism, continuously supplied for analysis instrument, analysis instrument no longer analyzes certain
The tested gas that one time point was passed through, but the data of mixed gas in certain period are analyzed, and measurement is continuous, so that
Measurement data has better continuity, more can reflect the actual analysis data of tested gas；The structure of device is simple, volume
It is smaller, carrying convenience, strong flexibility.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the automatic sample mixing device of portable gas,
Fig. 2 is the automatic sample mixing device handle inner schematic diagram of gas circuit of portable gas.
Attached drawing mark:
1, sampling tube assembly, 11, vacuum pump, 12, gas nozzle, the 121, first port, the 122, second port, the 13, first electromagnetism
Valve, 14, second solenoid valve, 15, sampling pipe, 16, third solenoid valve, 17, first filter, 18, handle, 2, vacuum system, 21,
Vacuum tank, 22, sample mixing mechanism, 23, control system, the 3, first gas circuit, the 4, second gas circuit, 5, third gas circuit, the 6, the 4th solenoid valve,
7, aspiration pump, the 8, second filter, A, analysis instrument, B, flue.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining
The utility model should not be understood as the restriction to the specific protection scope of the utility model.
Embodiment
Referring to Fig.1 with 2, the automatic sample mixing device of the portable gas of the present embodiment, including sampling tube assembly 1, vacuum system
2, the sampling tube assembly 1 is connected to by the first gas circuit 3 and the second gas circuit 4 with vacuum system 2, and the sampling tube assembly 1 includes
Vacuum pump 11, gas nozzle 12 pass through the first solenoid valve 13 in parallel and second solenoid valve 14 between the vacuum pump 11 and gas nozzle 12
First port 121 of connection, the gas nozzle 12 connects the first gas circuit 3, and the second port 122 is exposed in air, the sampling pipe
The sampling pipe 15 of component 1 is connected to by third solenoid valve 16 with the second gas circuit 4, and the vacuum system 2 is by third gas circuit 5 and divides
Analyzer device A connection, the third gas circuit 5 are equipped with the 4th solenoid valve 6 and aspiration pump 7.
As a preferred embodiment of the present embodiment, the end of the sampling pipe 15 connects first filter 17.
As a preferred embodiment of the present embodiment, the sampling tube assembly 1 has handle 18, the vacuum pump
11, the first solenoid valve 13, second solenoid valve 14, third solenoid valve 16 are arranged inside handle 18, and the setting of gas nozzle 12 exists
Outside handle 18.
As a preferred embodiment of the present embodiment, second gas circuit 4 is a heat tracing pipe.Cigarette in the prior art
The sampling pipe of dirt is typically all included heating function, it is ensured that the flue gas of sampling can be heated to certain temperature to evaporate it
The moisture contained guarantees that the gas for eventually entering into analysis instrument is dry, not analysis on damage instrument, therefore the second gas circuit use
Heat tracing pipe, equally included heating function.
As a preferred embodiment of the present embodiment, the vacuum system 2 includes vacuum tank 21, is arranged in vacuum tank
The pressure and temp control system 23 outside vacuum tank 21 is arranged in sample mixing mechanism 22 inside 21.The sample mixing mechanism of the present embodiment
22 use a gas-storing bag, and light-weight, replacement conveniently, more conducively carries.Certainly, it can equally be placed in vacuum tank 21 and realize
The isostructural container of other bottle bodies, tank body of gas storage is within the protection of this patent.The pressure and temp of the present embodiment controls system
System 23 realize vacuum tanks 21 in temperature and pressure monitoring and control, pressure and temp control system 23 include pressure sensor,
The components such as temperature sensor, control unit, belong to the prior art, repeat no more.
As a preferred embodiment of the present embodiment, the second filter 8 is provided in the third gas circuit 5.
As a preferred embodiment of the present embodiment, first solenoid valve 13 and second solenoid valve 14 use two
Triple valve, third solenoid valve 16 and the 4th solenoid valve 6 use check valve.
Referring to Fig.1, step completes the sample mixing for being tested gas using the device of the present embodiment by the following method,
S1, the temperature value in vacuum tank 21 is set by pressure and temp control system 23,
S2, the sampling pipe 15 of the automatic sample mixing device of the portable gas of the present embodiment is placed in air, closes third electricity
Magnet valve 16 and the 4th solenoid valve 6, the first solenoid valve 13 are switched to the first port 121, and second solenoid valve 14 is switched to the second port
122, starting vacuum pump 11 is evacuated,
After S3, vacuum tank 21 to certain negative pressure, the first solenoid valve 13 is switched to the second port 122, opens third solenoid valve
16, sample mixing mechanism 22 starts air inlet,
S4, sample mixing mechanism 22 are again switched off third solenoid valve 16, second solenoid valve 14 is switched to the first port into after full gas
121, it is again started up vacuum pump 11 and blows into vacuum tank 21, pressure is increased to certain value in vacuum tank 21, opens third electromagnetism
Air discharge in it is achieved the purpose that cleaning sample mixing mechanism due to pressure rise by valve 16, sample mixing mechanism 22,
The method of above S1- S4 cleaning sample mixing mechanism 22 can repeat 2-3 times.
S4, then by sampling pipe 15 be placed in flue B or other exhaust places in, repeat step S1-S3, make sample mixing
Tested gas is full of in mechanism 22,
S5, third solenoid valve 16 is closed, opens the 4th solenoid valve 6, start aspiration pump 7, tested gas is drawn into analyzer
In device A.The work to tested gas sampling, sample mixing and analysis is completed by the step of above S1- S5.It needs further
Illustrate, it, can be straight by sampling pipe 15 in step 2 if user does not need to clean sample mixing mechanism 22 using air
It connects and is placed in flue B, and complete step 2,3 according to this, make full of tested gas in sample mixing mechanism 22, then execute step S5 to be tested
Gas is pumped into analysis instrument A.
Claims (7)
1. a kind of automatic sample mixing device of portable gas, it is characterised in that: including sampling tube assembly, vacuum system, the sampling
Tube assembly is connected to by the first gas circuit and the second gas circuit with vacuum system, and the sampling tube assembly includes vacuum pump, gas nozzle, described
Be connected between vacuum pump and gas nozzle by parallel the first solenoid valve and second solenoid valve, a port of the gas nozzle connects the
One gas circuit, another port are exposed in air, and the sampling pipe of the sampling tube assembly is connected by third solenoid valve and the second gas circuit
Logical, the vacuum system is connected to by third gas circuit with analysis instrument, and the third gas circuit is equipped with the 4th solenoid valve and pumping
Pump.
2. the automatic sample mixing device of portable gas according to claim 1, it is characterised in that: the end of the sampling pipe connects
Connect filter.
3. the automatic sample mixing device of portable gas according to claim 1, it is characterised in that: the sampling tube assembly has
Handle, the vacuum pump, the first solenoid valve, second solenoid valve, third solenoid valve are arranged at handle inner, the gas nozzle setting
In handle outer.
4. the automatic sample mixing device of portable gas according to claim 1, it is characterised in that: second gas circuit is one
Heat tracing pipe.
5. the automatic sample mixing device of portable gas according to claim 1, it is characterised in that: the vacuum system includes true
Empty van, the sample mixing mechanism being arranged in inside vacuum tank, are arranged in the pressure and temp control system outside vacuum tank.
6. the automatic sample mixing device of portable gas according to claim 1, it is characterised in that: be arranged in the third gas circuit
There is filter.
7. the automatic sample mixing device of portable gas according to claim 1, it is characterised in that: first solenoid valve and
Two solenoid valves use two-position three-way valve, and third solenoid valve and the 4th solenoid valve use check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821518885.4U CN208872571U (en) | 2018-09-18 | 2018-09-18 | A kind of automatic sample mixing device of portable gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821518885.4U CN208872571U (en) | 2018-09-18 | 2018-09-18 | A kind of automatic sample mixing device of portable gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208872571U true CN208872571U (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821518885.4U Active CN208872571U (en) | 2018-09-18 | 2018-09-18 | A kind of automatic sample mixing device of portable gas |
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| Country | Link |
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| CN (1) | CN208872571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006920A (en) * | 2019-12-30 | 2020-04-14 | 宁波市产品质量检验研究院 | Total volatile organic compound TVOC (transient volatile organic compound) on-site rapid detection device and method |
-
2018
- 2018-09-18 CN CN201821518885.4U patent/CN208872571U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006920A (en) * | 2019-12-30 | 2020-04-14 | 宁波市产品质量检验研究院 | Total volatile organic compound TVOC (transient volatile organic compound) on-site rapid detection device and method |
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