CN215574886U - Gas chromatograph without carrier gas - Google Patents
Gas chromatograph without carrier gas Download PDFInfo
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- CN215574886U CN215574886U CN202122236709.XU CN202122236709U CN215574886U CN 215574886 U CN215574886 U CN 215574886U CN 202122236709 U CN202122236709 U CN 202122236709U CN 215574886 U CN215574886 U CN 215574886U
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- 239000007789 gas Substances 0.000 title claims abstract description 68
- 239000012159 carrier gas Substances 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000013375 chromatographic separation Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000000809 air pollutant Substances 0.000 claims abstract description 4
- 231100001243 air pollutant Toxicity 0.000 claims abstract description 4
- 238000004817 gas chromatography Methods 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 21
- 239000002912 waste gas Substances 0.000 claims description 6
- 238000005194 fractionation Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 15
- 239000000243 solution Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model relates to a gas chromatograph without carrier gas. The device comprises a rack and a chromatographic separation device arranged in the rack, wherein the rack comprises a rack body, a gas-liquid interface and a module interface, the gas-liquid interface and the module interface are arranged on the rack body and are respectively connected with the chromatographic separation device, one side of the module interface is also connected with a control mechanism, and the control mechanism controls the operating states of the chromatographic separation device and the gas-liquid interface through the module interface; a filter for filtering air pollutants is further arranged between the gas-liquid interface and the chromatographic separation device, and a sealing ring layer is further arranged at the joint of the filter and the gas-liquid interface. The utility model has strong practicability, can effectively control the sample introduction flow rate, and simultaneously reduces unnecessary labor cost, thereby synchronously reducing detection errors and cost.
Description
Technical Field
The utility model relates to the technical field of air detection, in particular to a gas chromatograph without carrier gas.
Background
Along with the development of society, the improvement of resident environmental consciousness, people are often in the room, and the demand for the indoor environment is also rising day by day, simultaneously, because the leakproofness of building is trending high, the circulation of indoor air is reduced, and use a large amount of compound materials in the present furniture material, this will lead to compound material volatile organic matter to pile up in a large number thereby influence living environment, and professional common gas chromatography device carries out qualitative and quantitative analysis to complicated mixture gas-liquid.
When the gas chromatography device carries out quantitative analysis on mixed gas and liquid, the main cause of analysis errors during sample injection and conveying pipelines, and the principle of a sample injection system, structure, sample injection speed, sample injection tool and the like can directly influence the repeated detection performance of the gas chromatograph, and referring to the air quality detection method described in patent document CN201910355504.8, the detection scheme can not control the gas injection quantity, and the sample gas is easy to cause flow velocity change in a pipe body due to sample gas leakage caused by the influence of the pressure factor of an inlet/an inlet, so that sample injection unbalance is caused, and the measurement result is influenced.
Conventional gas chromatography device often is equipped with the high pressure gas cylinder simultaneously and is regarded as the input of carrier gas, and this will influence the stability of carrier gas input, and too big weight also does not do benefit to the mobile gas chromatograph and measures, reduces detection efficiency, and the replacement of high pressure gas cylinder needs professional operation personnel to operate simultaneously, has increased unnecessary technical cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects and provides the gas chromatograph without gas carrier, the gas chromatographic separation system has reasonable design, can effectively control the flow rate of sample introduction, and simultaneously reduces unnecessary labor cost and detection error and cost.
The above object of the present invention is achieved by the following technical means:
the gas-free gas chromatograph comprises a rack and a chromatographic separation device arranged in the rack, wherein the rack comprises a rack body, a gas-liquid interface and a module interface, the gas-liquid interface and the module interface are arranged on the rack body and are respectively connected with the chromatographic separation device, one side of the module interface is also connected with a control mechanism, and the control mechanism controls the operating states of the chromatographic separation device and the gas-liquid interface through the module interface; a filter for filtering air pollutants is further arranged between the gas-liquid interface and the chromatographic separation device, and a sealing ring layer is further arranged at the joint of the filter and the gas-liquid interface.
Further, in the above technical solution, the gas-liquid interface includes an air filter valve, a sample gas inlet, a sample gas outlet, and a waste gas outlet, the air filter valve includes a valve port, a rotary valve, and a buckle, the valve port, the sample gas inlet, the sample gas outlet, and the waste gas outlet are installed on the frame body in a vertical row, the rotary valve is rotatably disposed on the valve port, the buckle is disposed on one side of the valve port, and when the rotary valve is separated from the valve port, the buckle rotates toward the valve port and completely closes the valve port.
Further, in the above technical solution, the frame body is further provided with a state slot group, and the state slot group is located below the gas-liquid interface.
Further, in the above technical solution, the seal ring layer includes a shrink-fit ring layer and a shunt layer, the shrink-fit ring layer includes an inner ring layer and an outer ring layer, the inner ring layer is a hollow cylindrical ring body, the outer ring layer is disposed on an outer wall surface of the inner ring layer, a ring-shaped groove is formed on a wall surface of the inner ring layer, and a cross-sectional shape of the groove is a trapezoid with a narrow opening and a wide bottom.
Further, in the above technical solution, the inner wall surface of the outer ring layer and the outer wall surface of the inner ring layer are mutually attached and pressed, and the groove and the inner wall surface of the outer ring layer form a closed-loop cavity.
Further, in the above technical solution, the shunt layer is disposed on two sides of the inner ring layer.
Further, in the above technical solution, the chromatographic separation device includes a module plate having an integral frame and capable of being independently split into a plurality of plates, two sides of the module plate are respectively a first side portion and a second side portion, the first side portion is further provided with a gas path system, a wall surface of the second side portion is further provided with a circuit connection module, each independent plate of the module plate is further provided with a sealing and closing module, and the sealing and closing module is connected with the circuit connection module.
Further, in the above technical scheme, still install a plurality of gas chromatography separation parts on the module plate, gas chromatography separation part installs on the module plate and be connected with the gas circuit system, first side includes last buckle and lower buckle that agree with each other, when going up the buckle and demolish, sealed closed module seals corresponding gas circuit system, the gas circuit system is located between last buckle and the lower buckle.
Further, in the above technical solution, a flow rate control module for controlling the gas chromatography separation component is further installed on one side of the gas chromatography separation component, and the flow rate control module is respectively connected to the circuit connection module and the gas circuit system.
Further, in the above technical scheme, the gas circuit system includes a pipe groove body and a pipe body, the pipe groove body is arranged between the upper buckle plate and the lower buckle plate, and the pipe body is arranged on the pipe groove body and is matched with the pipe groove body.
The utility model has the beneficial effects that:
the method has the advantages that: adopt air filter to construct to replace high-pressure gas cylinder to carry out the carrier gas input, improve carrier gas input stability, thereby more portable mobile chromatograph detects and improves detection efficiency, has reduced unnecessary artifical learning technology cost simultaneously.
The method has the advantages that: the connecting structure of the flow dividing layer and the sleeving ring layer is adopted, the input and output flow velocity is stably controlled, gas and liquid are prevented from being discharged, and the precision of a measuring result is improved.
The method has the advantages that: the module plate can be independently disassembled, and is independently separated from the gas circuit system and the circuit connection module, after the upper buckle plate of the first side part and the gas chromatography separation part are disassembled, the circuit connection module responds to and controls the corresponding sealed closed module to separate the gas circuit system of the corresponding block, the adaptability of the micro-fluid gas chromatography separation system under various use scenes is improved, the gas circuit system does not need to stop running when the gas chromatography separation part needs to be replaced to perform different detection function adaption, other gas chromatography separation parts keep running states, and the detection efficiency is improved.
The advantages are that: the connecting structure of the pipe body externally-combined pinch plate is adopted, the fluctuation of the gas-liquid flow rate caused by the deformation of the pipe body due to pressure is reduced, the detection and analysis errors caused by the sharp change of the flow rate are reduced to a certain extent, and the accuracy of periodic test is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that need to be used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic diagram of the structure of the chromatographic separation apparatus of the present invention.
FIG. 3 is a cross-sectional view of the filter of the present invention at the connection to the air-liquid interface.
The names of the components corresponding to the numerical identifiers in fig. 1 to 3 are as follows:
a frame-1; a slipknot-10; a frame body-11; state slot set-111; a gas-liquid interface-12; module interface-13; an air filter valve-14; a sample gas inlet-15; sample gas outlet-16; exhaust outlet-17; valve port-18; rotating the valve-19;
chromatographic separation device-2; a module plate-21; a first side-22; a second side-23;
a seal ring layer-3; a shrink-fit ring layer-31; a shunt layer-32; inner loop layer-33; outer loop layer-34; a groove-35;
a gas path system-4;
gas chromatography separation unit-5; an upper buckle plate-51; a lower buckle plate-52.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and in the description of the present invention, it should be noted that:
the term "connected" is to be understood broadly, and may be mechanical or electrical; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements.
The terms "front", "rear", "side", "upper", "lower" and the like are used as terms of orientation or positional relationship based on the drawings, and are only for convenience of description of the present invention.
For those skilled in the art, the technical solutions in the embodiments may be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
The present invention is further described with reference to the following specific examples, but it should be noted that the present invention is implemented on the premise of the technical solution of the present invention, and the detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1 to 3, the most preferred embodiment is:
the carrier-gas-free gas chromatograph comprises a rack 1 and a chromatographic separation device 2 arranged in the rack 1, wherein the rack 1 comprises a rack body 11, a gas-liquid interface 12 and a module interface 13, the gas-liquid interface 12 and the module interface 13 are arranged on the rack body 11 and are respectively connected with the chromatographic separation device 2, one side of the module interface 13 is also connected with a control mechanism, and the control mechanism controls the operating states of the chromatographic separation device 2 and the gas-liquid interface 12 through the module interface 13; a filter for filtering air pollutants is further arranged between the gas-liquid interface 12 and the chromatographic separation device 2, and a sealing ring layer 3 is further arranged at the joint of the filter and the gas-liquid interface 12.
Generally, the filter is matched with a gas-liquid interface to be connected with filtered air, and the filtered air can replace the function of carrier gas to push sample gas to enter a chromatograph for measurement.
In this embodiment, adopt air filter mechanism to replace the gas cylinder to carry out the carrier gas input, improve carrier gas input stability, thereby more portable mobile chromatograph detects and improves detection efficiency, has reduced the artifical learning technique cost of unnecessary simultaneously.
As shown in fig. 1 to 2, the gas-liquid interface 12 includes an air filter valve 14, a sample gas inlet 15, a sample gas outlet 16, and a waste gas outlet 17, the air filter valve 14 includes a valve port 18, a rotary valve 19, and a latch 10, the valve port 18, the sample gas inlet 15, the sample gas outlet 16, and the waste gas outlet 17 are installed in a vertical row on the frame body 11, the rotary valve 19 is rotatably disposed on the valve port 18, the latch 10 is disposed on one side of the valve port 18, and when the rotary valve 19 is separated from the valve port 18, the latch 10 rotates toward the valve port 18 and completely closes the valve port 18.
In this embodiment, adopt the slipknot of mutually supporting to prevent that the filtration mouth from inserting the maloperation, influencing chromatograph work efficiency.
As shown in fig. 1, a state slot group 111 is further disposed on the frame body 11, and the state slot group 111 is located below the gas-liquid interface 12.
In general, the state cell set is a transparent cell set and it faces the chromatograph apparatus.
In this embodiment, the operation state inside the body is monitored at any time by using the state slot group.
As shown in fig. 2 to 3, the seal ring layer 3 includes a shrink-fit ring layer 31 and a shunt layer 32, the shrink-fit ring layer 31 includes an inner ring layer 33 and an outer ring layer 34, the inner ring layer 33 is a hollow cylindrical ring body, the outer ring layer 34 is disposed on an outer wall surface of the inner ring layer 33, a ring-shaped groove 35 is formed in the wall surface of the inner ring layer 33, and the cross-sectional shape of the groove 35 is a trapezoid with a narrow opening and a wide bottom. The inner wall surface of the outer ring layer 34 and the outer wall surface of the inner ring layer 33 are mutually attached and pressed, and the groove 35 and the inner wall surface of the outer ring layer 34 form a closed-loop cavity. The shunt layer 32 is disposed on both sides of the inner ring layer 33.
In this embodiment, when the chromatograph operates and gas-liquid passes through, the concave part can compress tightly on the contact surface near it, and the gas-liquid of inner circle layer high pressure side can be given priority to entering closed loop cavity and make closed loop cavity produce pressure when wanting the low pressure side seepage, this pressure reaction on the trapezoidal waist side of closed loop cavity, force the inner circle layer external rise and with outer circle layer is closely laminated more to the sealed effect of connector has been optimized.
As shown in fig. 1 to 3, the chromatographic separation device 2 includes a module plate 21 having an integral frame and capable of being independently split into a plurality of plates, the two sides of the module plate 21 are respectively a first side portion 22 and a second side portion, the first side portion 22 is further provided with an air channel system 4, the wall surface of the second side portion is further provided with a circuit connection module, each independent plate of the module plate 21 is further provided with a sealing and closing module, and the sealing and closing module is connected with the circuit connection module.
In this embodiment, the module plate can be independently disassembled, and is independently separated from the gas circuit system and the circuit connection module, after the upper buckle plate of the first side portion and the gas chromatography separation component are disassembled, the circuit connection module responds to and controls the corresponding sealed closed module to separate the gas circuit system of the corresponding block, so that the adaptability of the micro-fluid gas chromatography separation system under various use scenes is improved, when a certain gas chromatography separation component needs to be replaced for carrying out different detection function adaptations, the gas circuit system does not need to stop running, other gas chromatography separation components keep running states, and the detection efficiency is improved.
As shown in fig. 1 to 3, a plurality of gas chromatography separation components 5 are further mounted on the module plate 21, the gas chromatography separation components 5 are mounted on the module plate 21 and connected to the gas path system 4, the first side portion 22 includes an upper buckle plate 51 and a lower buckle plate 52 which are fitted to each other, when the upper buckle plate 51 is removed, the sealed closed module closes the corresponding gas path system 4, and the gas path system 4 is located between the upper buckle plate 51 and the lower buckle plate 52.
In this embodiment, the connection structure of buckle about adopting reduces the gas-liquid flow rate fluctuation that the body leads to because of pressure deformation to reduce to a certain extent because of the detection and analysis error that the velocity of flow catastrophe leads to, improve the degree of accuracy of periodic test.
As shown in fig. 1 to 2, a flow rate control module for controlling the gas chromatography separation component 5 is further installed on one side of the gas chromatography separation component 5, and the flow rate control module is respectively connected with the circuit connection module and the gas path system 4. The gas circuit system 4 comprises a pipeline groove body and a pipe body, the pipeline groove body is arranged between the upper buckle plate 51 and the lower buckle plate 52, and the pipe body is arranged on the pipeline groove body and is matched with the pipeline groove body.
The above description is intended to illustrate the preferred embodiments of the present invention, and not to limit the scope of the present invention, and all modifications and equivalents of the structures described in the specification and drawings, or any other technical fields related thereto, which are directly or indirectly applicable to the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. No carrier gas chromatograph, including frame (1) and set up chromatographic fractionation device (2) in frame (1), its characterized in that: the rack (1) comprises a rack body (11), a gas-liquid interface (12) and a module interface (13), wherein the gas-liquid interface (12) and the module interface (13) are arranged on the rack body (11) and are respectively connected with the chromatographic separation device (2), one side of the module interface (13) is also connected with a control mechanism, and the control mechanism controls the running states of the chromatographic separation device (2) and the gas-liquid interface (12) through the module interface (13);
a filter for filtering air pollutants is further arranged between the gas-liquid interface (12) and the chromatographic separation device (2), and a sealing ring layer (3) is further arranged at the joint of the filter and the gas-liquid interface (12).
2. The carrier-gas-free gas chromatograph of claim 1, wherein: the gas-liquid interface (12) comprises an air filter valve (14), a sample gas inlet (15), a sample gas outlet (16) and a waste gas outlet (17), the air filter valve (14) comprises a valve port (18), a rotary valve (19) and a buckle (10), the valve port (18), the sample gas inlet (15), the sample gas outlet (16) and the waste gas outlet (17) are arranged on the frame body (11) in a vertical row in a penetrating manner, the rotary valve (19) is rotatably arranged on the valve port (18), the buckle (10) is arranged on one side of the valve port (18), and when the rotary valve (19) is separated from the valve port (18), the buckle (10) rotates towards the valve port (18) and completely covers the valve port (18).
3. The carrier-gas-free gas chromatograph of claim 1, wherein: the frame body (11) is further provided with a state groove group (111), and the state groove group (111) is located below the gas-liquid interface (12).
4. The carrier-gas-free gas chromatograph of claim 1, wherein: the seal ring layer (3) comprises a sleeving ring layer (31) and a shunt layer (32), the sleeving ring layer (31) comprises an inner ring layer (33) and an outer ring layer (34), the inner ring layer (33) is a hollow cylindrical ring body, the outer ring layer (34) is arranged on the outer wall surface of the inner ring layer (33), a groove (35) which is annular is formed in the wall surface of the inner ring layer (33), and the cross section of the groove (35) is in a shape of a trapezoid with a narrow opening and a wide bottom.
5. The carrier-gas-free gas chromatograph of claim 4, wherein: the inner wall surface of the outer ring layer (34) and the outer wall surface of the inner ring layer (33) are mutually attached and pressed, and the groove (35) and the inner wall surface of the outer ring layer (34) form a closed-loop cavity.
6. The carrier-gas-free gas chromatograph of claim 4, wherein: the shunting layer (32) is arranged on two sides of the inner ring layer (33).
7. The carrier-gas-free gas chromatograph of claim 1, wherein: the chromatographic separation device (2) comprises a module plate (21) which is provided with an integral frame and can be independently split into a plurality of plates, wherein a first side part (22) and a second side part (23) are respectively arranged on two sides of the module plate (21), a gas circuit system (4) is further arranged on the first side part (22), a circuit connection module is further arranged on the wall surface of the second side part (23), a sealed closing module is further arranged on each independent plate of the module plate (21), and the sealed closing module is connected with the circuit connection module.
8. The carrier-gas-free gas chromatograph of claim 7, wherein: still install a plurality of gas chromatography separation parts (5) on module plate (21), gas chromatography separation parts (5) are installed on module plate (21) and be connected with gas circuit system (4), first lateral part (22) are including last buckle (51) and lower buckle (52) that agree with each other, when going up buckle (51) and demolish, sealed closed module seals corresponding gas circuit system (4), gas circuit system (4) are located go up between buckle (51) and lower buckle (52).
9. The carrier-gas-free gas chromatograph of claim 8, wherein: one side of gas chromatography separation part (5) still installs and is used for control the velocity of flow control module group of gas chromatography separation part (5), velocity of flow control module group respectively with circuit connection module and gas circuit system (4) are connected.
10. The carrier-gas-free gas chromatograph of claim 8, wherein: the gas circuit system (4) comprises a pipeline groove body and a pipe body, the pipeline groove body is arranged between the upper buckle plate (51) and the lower buckle plate (52), and the pipe body is arranged on the pipeline groove body and matched with the pipeline groove body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122236709.XU CN215574886U (en) | 2021-09-15 | 2021-09-15 | Gas chromatograph without carrier gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122236709.XU CN215574886U (en) | 2021-09-15 | 2021-09-15 | Gas chromatograph without carrier gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215574886U true CN215574886U (en) | 2022-01-18 |
Family
ID=79850765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122236709.XU Active CN215574886U (en) | 2021-09-15 | 2021-09-15 | Gas chromatograph without carrier gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215574886U (en) |
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2021
- 2021-09-15 CN CN202122236709.XU patent/CN215574886U/en active Active
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Address after: 519000, Room 404 and 405, 4th Floor, Building 15, Hucheng Dajing, No. 17 Wenheng Street, Sanzao Town, Jinwan District, Zhuhai City, Guangdong Province Patentee after: Zhuhai dingzheng Guoxin Technology Co.,Ltd. Country or region after: China Address before: 519000 Room 308, floor 3, plant 1, No. 6698, Zhuhai Avenue, Hongqi Town, Jinwan District, Zhuhai City, Guangdong Province Patentee before: Zhuhai dingzheng Guoxin Technology Co.,Ltd. Country or region before: China |
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