CN107290466A - A kind of NMHC instrumentation - Google Patents
A kind of NMHC instrumentation Download PDFInfo
- Publication number
- CN107290466A CN107290466A CN201710457014.XA CN201710457014A CN107290466A CN 107290466 A CN107290466 A CN 107290466A CN 201710457014 A CN201710457014 A CN 201710457014A CN 107290466 A CN107290466 A CN 107290466A
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- gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/68—Flame ionisation detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a kind of NMHC instrumentation, including housing, air-channel system, clack box, post case, the first hydrogen flameionization monitor, the second hydrogen flameionization monitor and communication system are provided with housing.The present invention is detected to total hydrocarbon content and methane content simultaneously using dual detector, concentration value with regard to NMHC can be drawn, so greatly shorten the time of single detection, and communication system is provided with instrument, and then pass through computer operation, detection mode of operation to instrument is configured, for example with periodicity (different cycles duration) or continuation, or set time point detection.In addition, the present invention is additionally arranged gas knot screen, the solid impurity in sample gas can be removed, prevent it from producing influence to combustion testing, gas flowmeter can effectively control the input quantity of carrier gas, strictly control its ratio with sample gas amount, help to increase the sensitivity of instrument.
Description
Technical field
The present invention relates to NMHC detection field, and in particular to a kind of NMHC instrumentation.
Background technology
NMHC typically refer in addition to methane all volatilizable hydrocarbons (be wherein mainly C2~
C8).NMHC in air exceedes finite concentration, in addition to directly to human health, under certain condition through daylight
Irradiation can also produce photochemical fog, and environment and the mankind are caused harm.The on-line checking of polymorphic type is occurred in that in the market
The instrument of NMHC, the principle of detection is to stationary source using double injection port, double chromatographic columns, the methods of dual detector
NMHC in exhaust is detected, total hydrocarbon content, another root chromatogram column are detected with a root chromatogram column and a detector
Methane and non-methane are separated, methane content is obtained by second detector detection by the methane of chromatographic column, both differences are
For the content of NMHC.
Flame ionization ditector is using hydrogen and the flame of air burning generation as the energy, when organic compound enters
With hydrogen and the flame of oxygen combustion, chemi-ionization is produced at high temperature, and ionization produces the ion of several orders of magnitude higher than base flow,
Under the orientation of high voltage electric field, ion stream is formed, faint ion stream is amplified by high resistant, as with entering having for flame
The electric signal that machine chemical combination object amount is directly proportional, therefore quantitative analysis can be carried out to organic matter according to the size of signal.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of NMHC instrumentation, instrument combination calculating
Machine software systems, having the advantages that detection, accuracy is high, simple to operate and efficiency high.
The technical problems to be solved by the invention are realized using following technical scheme：
Air-channel system, clack box, post case, first are provided with a kind of NMHC instrumentation, including housing, the housing
Hydrogen flameionization monitor, the second hydrogen flameionization monitor and communication system,
The air-channel system includes Primordial Qi sampling gas circuit, carrier gas conveying gas circuit, driving force gas circuit and detection gas circuit, and Primordial Qi
Sampling gas circuit, carrier gas conveying gas circuit, driving force gas circuit and detection gas circuit are all connected to clack box；
Ten-way valve, the first quantitative loop and the second quantitative loop are provided with the clack box, the ten-way valve is provided with Primordial Qi sampling gas
Road interface, the first quantitative ring interface A, carrier gas conveying air-path interface A, the first hydrogen flameionization monitor interface, first quantify
Ring interface B, the second quantitative ring interface A, carrier gas conveying air-path interface B, the second hydrogen flameionization monitor interface, second quantify
Ring interface B and driving force air-path interface；
A methane packed column and a total hydrocarbon packed column, methane packed column and the first hydrogen fire are provided with the post case
Flame ionization monitor connection, total hydrocarbon packed column and the connection of the second hydrogen flameionization monitor；
The communication system is connected with the air-channel system and clack box, for control air-channel system work and clack box in ten
Port valve is led to.
Further improvement is that, the Primordial Qi sampling gas circuit is provided with gas knot screen.
Further improvement is that, the carrier gas conveying gas circuit is provided with triple valve, and carrier gas conveying gas circuit is divided into by triple valve
It is connected after two with ten-way valve, and is equipped with every a gas flowmeter.
Further improvement is that, the driving force gas circuit is provided with air pump and pressure sensor.
Further improvement is that, be provided with breather pipe between the air pump and pressure sensor, the breather pipe with it is outer
Boundary is connected, and provided with switch on breather pipe.
Further improvement is that, the communication system includes
Signaling module, for receiving the command signal that computer is sent, and
Analysis module, is analyzed and processed for the signal to receiving, and
Control module, the work led to each instrument on air-channel system for controlling ten-way valve.
The beneficial effects of the invention are as follows：Instrument uses dual detector to be detected simultaneously to total hydrocarbon content and methane content,
Concentration value with regard to that can draw NMHC, is so greatly shortened in the time of single detection, and instrument provided with communication
System, and then by computer operation, the detection mode of operation to instrument is configured, for example with periodicity (different cycles
Duration) or continuation, or the detection of set time point.In addition, the present invention is additionally arranged gas knot screen, sample gas can be removed
In solid impurity, prevent it from producing influence to combustion testing, gas flowmeter can effectively control the input quantity of carrier gas, strict control
Its ratio with sample gas amount is made, helps to increase the sensitivity of instrument.
Brief description of the drawings
Fig. 1 is external structure of the invention；
Circuit connection diagrams of the Fig. 2 for the present invention in the loaded state；
Circuit connection diagrams of the Fig. 3 for the present invention under detection state；
Fig. 4 is the schematic diagram of each interface on ten-way valve；
Fig. 5 is the schematic diagram of communication system；
Wherein, 100- housings, 200- air-channel systems, 201- Primordial Qi sampling gas circuit, 202- carrier gas conveying gas circuit, 203- drivings
Strength road, 204- detection gas circuits, 205- gas knot screens, 206- triple valves, 207- gas flowmeters, 208- air pumps,
209- pressure sensors, 210- breather pipes, 211- switches, 300- clack boxes, 301- ten-way valves, the quantitative loops of 302- first, 303- the
Two quantitative loops, 304- Primordial Qi sampling air-path interface, quantitative ring interface A, 306- carrier gas conveying the air-path interface A, 307- of 305- first
First hydrogen flameionization monitor interface, quantitative ring interface A, the 310- carrier gas of 308- the first quantitative loop members of a family B, 309- second is defeated
Send the hydrogen flameionization monitor interface of air-path interface B, 311- second, quantitative ring interface B, 313- the driving force gas circuits of 312- second
Interface, 400- post cases, 401- methane packed columns, 402- total hydrocarbon packed columns, 500- the first hydrogen flameionization monitors, 600-
Two hydrogen flameionization monitors, 700- communication systems, 701- signaling modules, 702- analysis modules, 703- control modules.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating and embodiment, and the present invention is expanded on further.
As shown in figure 1, a kind of NMHC instrumentation, including housing 100, housing 100 is interior to be provided with air-channel system
200th, clack box 300, post case 400, the first hydrogen flameionization monitor 500, the second hydrogen flameionization monitor 600 and communication
System 700.
With reference to shown in Fig. 2-5, air-channel system 200 includes Primordial Qi sampling gas circuit 201, carrier gas conveying gas circuit 202, driving strength
Road 203 and detection gas circuit 204, and Primordial Qi sampling gas circuit 201, carrier gas conveying gas circuit 202, driving force gas circuit 203 and detection gas circuit
204 are all connected to clack box 300；Ten-way valve 301, the first quantitative loop 302 and the second quantitative loop 303, ten-way valve are provided with clack box 300
301 provided with Primordial Qi sampling air-path interface 304, the first quantitative ring interface A305, carrier gas conveying air-path interface A306, the first hydrogen flame
Ionize the quantitative ring interface B308 of monitor interface 307, first, the second quantitative ring interface A309, carrier gas conveying air-path interface
The quantitative ring interface B312 of B310, the second hydrogen flameionization monitor interface 311, second and driving force air-path interface 313；Post case
A methane packed column 401 and a total hydrocarbon packed column 402, the hydrogen flameionization of methane packed column 401 and first are provided with 400
Monitor 500 is connected, and the hydrogen flameionization monitor 600 of total hydrocarbon packed column 402 and second is connected；Communication system 700 with it is described
Air-channel system 200 and clack box 300 are connected, for controlling the work of air-channel system 200 and leading to for ten-way valve 301 in clack box 300.
Ten-way valve 301 has load condition position and detection mode bit：
With reference to shown in Fig. 2 and Fig. 4, when ten-way valve 301 is in load condition position, whole instrument is in load condition, whole
Individual gas circuit annexation is：Primordial Qi is sampled, and first quantifies ring interface to gas circuit 201 --- Primordial Qi sampling air-path interface 304 ---
--- --- second quantifies the first quantitative ring interface B308 --- the second quantitative ring interface A309 --- the first quantitative loop 302 A305
--- second quantitative ring interface B312 --- driving force air-path interface 313 --- the driving force gas circuit 203 of ring 303.Now, sample gas can
Collection is prepared to the first quantitative loop 302 and the second quantitative loop 303 for detection.
With reference to shown in Fig. 3 and Fig. 4, when ten-way valve 301 is in detection mode bit, whole instrument can carry out sample gas detection,
Now gas circuit is divided into three, is respectively：Carrier gas conveys gas circuit 202 --- carrier gas conveying air-path interface A306 --- first quantitative loop
Interface A305 --- the first quantitative loop 302 --- the first quantitative ring interface B308 --- first hydrogen flameionization monitor interfaces
307 --- the first hydrogen flameionization monitor 500；Carrier gas conveys gas circuit 202 --- carrier gas conveying air-path interface B310 ---
Second quantitative ring interface A309 --- the second quantitative loop 303 --- the second quantitative ring interface B312 --- second hydrogen flameionizations
Monitor interface 311 --- the second hydrogen flameionization monitor 600；Primordial Qi is sampled, and gas circuit 201 --- Primordial Qi sampling gas circuit connects
304 --- driving force air-path interface 313 --- driving force gas circuits 203 of mouth.Now, the first hydrogen flameionization monitor 500 is examined
Methane content is measured, the second hydrogen flameionization monitor 600 detects the content of total hydrocarbon, both differences extremely NMHC
Content.
As preferred case, Primordial Qi sampling gas circuit 201 is provided with gas knot screen 205, for being removed to sample gas
It is miscellaneous, including various particulate contaminants.
As preferred case, carrier gas conveying gas circuit 202 is provided with triple valve 206, and carrier gas is conveyed gas circuit by triple valve 206
202 points are to be connected with ten-way valve 301 after two, and are equipped with every a gas flowmeter 207.Gas flowmeter 207
The carrier gas instantaneous delivery and integrated flow in two gas circuits are measured respectively, and the convenient ratio to carrier gas and sampling gas is controlled, after allowing
Continuous combustion measurement provides optimal ratio.
As preferred case, driving force gas circuit 203 is provided with air pump 208 and pressure sensor 209.Air pump 208 is used
In the driving of sampling, the pressure value of the gas circuit of monitoring sampling in real time of pressure sensor 209, it is to avoid hypertonia and too low situation go out
It is existing.
As preferred case, between air pump 208 and pressure sensor 209 be provided with breather pipe 210, breather pipe 210 with
External world's connection, and provided with switch 211 on breather pipe 210.When switch 211 is opened, the direct air-breathing to external world of air pump 208 is stopped
Only sample, inner air path can be cleared up to a certain extent, improve measurement accuracy rate.
As preferred case, communication system 700 includes signaling module 701, for receiving the command signal that computer is sent,
And analysis module 702, analyzed and processed for the signal to receiving, and control module 703, for controlling ten-way valve
301 work led to each instrument on air-channel system 200.Using communication system 700, operational control is carried out by computer,
Detection mode of operation to instrument is configured, for example with periodicity (different cycles duration) or continuation, or it is fixed when
Between put detection.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (6)
1. a kind of NMHC instrumentation, including housing (100), it is characterised in that：Gas circuit is provided with the housing (100)
System (200), clack box (300), post case (400), the first hydrogen flameionization monitor (500), the second hydrogen flameionization prison
Device (600) and communication system (700) are surveyed,
The air-channel system (200) includes Primordial Qi sampling gas circuit (201), carrier gas conveying gas circuit (202), driving force gas circuit (203)
With detection gas circuit (204), and Primordial Qi sampling gas circuit (201), carrier gas conveying gas circuit (202), driving force gas circuit (203) and detect gas
Road (204) is all connected to clack box (300)；
Ten-way valve (301), the first quantitative loop (302) and the second quantitative loop (303) are provided with the clack box (300), described ten lead to
Valve (301) provided with Primordial Qi sampling air-path interface (304), the first quantitative ring interface A (305), carrier gas conveying air-path interface A (306),
First hydrogen flameionization monitor interface (307), the first quantitative ring interface B (308), the second quantitative ring interface A (309), load
Gas conveying air-path interface B (310), the second hydrogen flameionization monitor interface (311), the second quantitative ring interface B (312) and drive
Power air-path interface (313)；
A methane packed column (401) and a total hydrocarbon packed column (402), the methane filling are provided with the post case (400)
Post (401) is connected with the first hydrogen flameionization monitor (500), total hydrocarbon packed column (402) and the second hydrogen flameionization prison
Survey device (600) connection；
The communication system (700) is connected with the air-channel system (200) and clack box (300), for controlling air-channel system (200)
Work and clack box (300) interior ten-way valve (301) lead to.
2. a kind of NMHC instrumentation according to claim 1, it is characterised in that：The Primordial Qi sampling gas circuit
(201) it is provided with gas knot screen (205).
3. a kind of NMHC instrumentation according to claim 1, it is characterised in that：The carrier gas conveys gas circuit
(202) triple valve (206) is provided with, carrier gas is conveyed gas circuit (202) and is divided into after two and ten-way valve (301) by triple valve (206)
Connection, and it is equipped with every a gas flowmeter (207).
4. a kind of NMHC instrumentation according to claim 1, it is characterised in that：The driving force gas circuit
(203) air pump (208) and pressure sensor (209) are provided with.
5. a kind of NMHC instrumentation according to claim 4, it is characterised in that：In the air pump (208)
Breather pipe (210) is provided between pressure sensor (209), the breather pipe (210) is in communication with the outside, and in breather pipe
(210) provided with switch (211).
6. a kind of NMHC instrumentation according to claim 1, it is characterised in that：The communication system (700)
Including
Signaling module (701), for receiving the command signal that computer is sent, and
Analysis module (702), is analyzed and processed for the signal to receiving, and
Control module (703), the work led to each instrument on air-channel system (200) for controlling ten-way valve (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457014.XA CN107290466A (en) | 2017-06-16 | 2017-06-16 | A kind of NMHC instrumentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457014.XA CN107290466A (en) | 2017-06-16 | 2017-06-16 | A kind of NMHC instrumentation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107290466A true CN107290466A (en) | 2017-10-24 |
Family
ID=60096637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710457014.XA Pending CN107290466A (en) | 2017-06-16 | 2017-06-16 | A kind of NMHC instrumentation |
Country Status (1)
| Country | Link |
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| CN (1) | CN107290466A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752344A (en) * | 2017-11-08 | 2019-05-14 | 中国石油化工股份有限公司 | A kind of portable non-methane total hydrocarbons concentration detector and detection method |
| CN110780015A (en) * | 2018-07-31 | 2020-02-11 | 西安市宇驰检测技术有限公司 | Detection device and detection method for non-methane total hydrocarbons |
| CN111505188A (en) * | 2020-03-20 | 2020-08-07 | 合肥固泰自动化有限公司 | Volatile organic compounds VOCs multichannel on-line monitoring system |
| CN112461951A (en) * | 2020-11-04 | 2021-03-09 | 北京高麦克仪器科技有限公司 | Chromatographic analyzer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205426869U (en) * | 2016-03-24 | 2016-08-03 | 陈霄 | Adopt portable designing's non -methane total hydrocarbon analysis module |
| CN205449910U (en) * | 2015-12-30 | 2016-08-10 | 聚光科技(杭州)股份有限公司 | Non -methane total hydrocarbon on -line measuring device |
-
2017
- 2017-06-16 CN CN201710457014.XA patent/CN107290466A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205449910U (en) * | 2015-12-30 | 2016-08-10 | 聚光科技(杭州)股份有限公司 | Non -methane total hydrocarbon on -line measuring device |
| CN205426869U (en) * | 2016-03-24 | 2016-08-03 | 陈霄 | Adopt portable designing's non -methane total hydrocarbon analysis module |
Non-Patent Citations (3)
| Title |
|---|
| 《气体分析器和物质性质测量仪表》编写组: "《气体分析器和物质性质测量仪表》", 31 January 1980 * |
| 内库拉 等著，何润华 等译: "《工业色谱及应用》", 30 April 1989 * |
| 刘绍周 等编: "《化工生产常用自动分析仪器》", 31 August 1983 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752344A (en) * | 2017-11-08 | 2019-05-14 | 中国石油化工股份有限公司 | A kind of portable non-methane total hydrocarbons concentration detector and detection method |
| CN110780015A (en) * | 2018-07-31 | 2020-02-11 | 西安市宇驰检测技术有限公司 | Detection device and detection method for non-methane total hydrocarbons |
| CN111505188A (en) * | 2020-03-20 | 2020-08-07 | 合肥固泰自动化有限公司 | Volatile organic compounds VOCs multichannel on-line monitoring system |
| CN112461951A (en) * | 2020-11-04 | 2021-03-09 | 北京高麦克仪器科技有限公司 | Chromatographic analyzer |
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Application publication date: 20171024 |
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