CN111855874A - System for preventing polymerization of sampling tube of styrene chromatographic analyzer - Google Patents
System for preventing polymerization of sampling tube of styrene chromatographic analyzer Download PDFInfo
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- CN111855874A CN111855874A CN202010924882.6A CN202010924882A CN111855874A CN 111855874 A CN111855874 A CN 111855874A CN 202010924882 A CN202010924882 A CN 202010924882A CN 111855874 A CN111855874 A CN 111855874A
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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 33
- 238000005070 sampling Methods 0.000 title claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000000034 method Methods 0.000 claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 32
- 238000004458 analytical method Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims description 20
- 239000011241 protective layer Substances 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 abstract description 8
- 229920000620 organic polymer Polymers 0.000 abstract description 6
- 230000000379 polymerizing effect Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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Classifications
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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
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a system for preventing a sample inlet pipe of a styrene chromatographic analyzer from polymerizing. The system for preventing polymerization of the sample inlet pipe of the styrene chromatographic analyzer comprises: the high-pressure nitrogen cylinder, the first process main pipe and the second process main pipe; and the three-way valve a is connected to one side of the high-pressure nitrogen cylinder. The invention provides a system for preventing polymerization of a sample inlet pipe of a styrene chromatographic analyzer, which is mainly used by matching a high-pressure nitrogen cylinder and a three-way valve a to form a purging device, wherein one path of purging is added before entering a styrene liquid analysis meter, so that a pipeline can be purged regularly, organic impurities accumulated in the pipeline for a long time can be effectively removed, a sample meeting the requirement is obtained, nitrogen enters the pipeline for purging at regular time, and positive pressure sealing protection is provided for the nitrogen at ordinary times, so that the styrene can be effectively prevented from being directly polymerized by contacting with air, and further, the blockage of a sample inlet guide pipe valve caused by organic polymers generated after polymerization is avoided.
Description
Technical Field
The invention relates to the field of styrene chromatographic analyzers, in particular to a system for preventing a sample inlet pipe of a styrene chromatographic analyzer from polymerizing.
Background
Styrene is an organic compound formed by replacing one hydrogen atom of ethylene with benzene, the electron of vinyl is conjugated with a benzene ring, is insoluble in water, is dissolved in ethanol and ether, is gradually polymerized and oxidized when being exposed to air, is industrially an important monomer of synthetic resin, ion exchange resin, synthetic rubber and the like, has active chemical property, and is very easily influenced by storage temperature, oxygen content, polymerization inhibitor content, storage facilities and the like in the storage process to cause quality change and generate polymerization and solidification.
In the production process of styrene, the content of ethylbenzene and toluene in the finished product styrene needs to be measured by a chromatographic analyzer, and in the measurement process, the styrene is easy to polymerize, and the organic polymer generated after polymerization enables a sample introduction conduit valve to be blocked, so that the chromatogram can not be continuously and uninterruptedly subjected to sample analysis, meanwhile, the organic polymer can also enter a capillary tube of the analyzer and slowly volatilizes, and the volatilized substance can enter a gasification chamber, so that the internal chromatographic system is polluted, and finally, the analysis result is greatly influenced.
Therefore, there is a need to provide a system for preventing polymerization of a sample tube of a styrene chromatograph to solve the above-mentioned problems.
Disclosure of Invention
The invention provides a system for preventing a sample inlet pipe of a styrene chromatographic analyzer from polymerizing, which solves the problem that organic polymers generated after styrene polymerization block a sample inlet pipe valve in the measurement process of the styrene chromatographic analyzer, so that the chromatogram cannot continuously and uninterruptedly analyze a sample.
In order to solve the above technical problem, the present invention provides a system for preventing polymerization of a sample injection tube of a styrene chromatograph, comprising:
the high-pressure nitrogen cylinder, the first process main pipe and the second process main pipe;
the system comprises a high-pressure nitrogen cylinder, a three-way valve a, a three-way valve b, a first filter, a pneumatic three-way valve, an analysis meter, a first flow meter, a first check valve and a second check valve, wherein the three-way valve a is connected to one side of the high-pressure nitrogen cylinder, the output end of the three-way valve a is connected with the three-way valve b, the output end of the three-way valve b is connected with the first filter, the output end of the first filter is connected with the pneumatic three-way valve, the output end of the pneumatic three-way valve is connected;
the liquid sign bottle, the liquid sign bottle connect in the input of three-way valve a, the first technology is responsible for and all is provided with first ball valve and second ball valve on the second technology is responsible for.
Preferably, a main loop valve is connected between the first process main pipe and the second process main pipe, one side of the second process main pipe is connected with a second filter, and an output end of the second filter is connected with an input end of the three-way valve b.
Preferably, one side of the second process main pipe is connected with a second flowmeter, an output end of the second flowmeter is connected with a second check valve, and an output end of the second check valve is connected with one side of the first process main pipe.
Preferably, the analysis meter includes the main part, the shifting chute has all been seted up to the left and right sides of main part, the outside of main part is provided with protective structure, protective structure includes protection casing and slide bar.
Preferably, two ends of the sliding rod are respectively and fixedly connected with two sides of the inner surface of the moving groove, a sliding block is fixedly connected to the inner side of the protective cover, and the sliding block is sleeved on the outer surface of the sliding rod.
Preferably, the outer surface of the sliding rod is sleeved with a buffer spring, and the top of the inner wall of the protective cover is provided with a buffer pad.
Preferably, the top of protection casing has seted up the guiding gutter, the top of protection casing rotates and is connected with the handle.
Preferably, the outer part of the main body is provided with a protective layer, two grooves are formed in the protective layer, and the elastic balls are arranged in the grooves.
Compared with the related art, the system for preventing the polymerization of the sampling tube of the styrene chromatographic analyzer has the following beneficial effects:
the invention provides a system for preventing a sample inlet pipe of a styrene chromatographic analyzer from polymerizing, which is mainly used by matching a high-pressure nitrogen cylinder and a three-way valve a to form a purging device, wherein one path of purging is added before the sample inlet pipe enters a styrene liquid analysis meter, the pipeline can be purged regularly, organic impurities accumulated in the pipeline for a long time can be effectively purged, and a sample meeting the requirement is obtained. So that the chromatographic analysis is smoother and quicker.
Drawings
FIG. 1 is a schematic structural diagram of a system for preventing polymerization of a sample injection tube of a styrene chromatograph according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a system for preventing polymerization of a sample injection tube of a styrene chromatograph according to a second embodiment of the present invention;
FIG. 3 is a schematic side view of the body shown in FIG. 2;
FIG. 4 is a schematic cross-sectional view of the shield of FIG. 2;
FIG. 5 is a schematic view of the top of the shield of FIG. 2;
FIG. 6 is a schematic view of the exterior of the enclosure shown in FIG. 2;
FIG. 7 is a schematic view of the structure inside the protective layer shown in FIG. 2;
fig. 8 is an enlarged schematic view of the portion a shown in fig. 7.
Reference numbers in the figures: 1. high-pressure nitrogen cylinder, 2, a first process main pipe, 3, a second process main pipe, 4, three-way valves a, 5, three-way valves b, 6, a first filter, 7, a pneumatic three-way valve, 8, an analysis meter, 9, a first flow meter, 10, a first check valve, 11, a standard liquid bottle, 12, a first ball valve, 13, a second ball valve, 14, a main loop valve, 15, a second filter, 16, a second flow meter, 17, a second check valve, 18, a main body, 19, a moving groove, 20, a protection structure, 201, a protective cover, 202, a sliding rod, 203, a sliding block, 204, a buffer spring, 205, a buffer cushion, 206, a flow guide groove, 207, a handle, 21, a protection layer, 22, a groove, 23 and an elastic ball.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a system for preventing polymerization of a sample tube of a styrene chromatograph according to a first embodiment of the present invention. Prevent system of styrene chromatograph appearance sample tube polymerization, include:
a high-pressure nitrogen cylinder 1, a first process main pipe 2 and a second process main pipe 3;
the three-way valve a4 is connected to one side of the high-pressure nitrogen cylinder 1 through the three-way valve a4, the output end of the three-way valve a4 is connected with the three-way valve b5, the output end of the three-way valve b5 is connected with the first filter 6, the output end of the first filter 6 is connected with the pneumatic three-way valve 7, the output end of the pneumatic three-way valve 7 is connected with the analysis meter 8, the output end of the analysis meter 8 is connected with the first flowmeter 9, the output end of the first flowmeter 9 is connected with the first check valve 10, and the output end of the first check valve 10 is connected with one side of;
the liquid sign bottle 11, the liquid sign bottle 11 is connected in the input of three-way valve a4, all be provided with first ball valve 12 and second ball valve 13 on first technology is responsible for 2 and the second technology is responsible for 3.
Compressed nitrogen is stored in the high-pressure nitrogen cylinder 1, the pipeline is purged at regular time by outputting the nitrogen, the first process main pipe 2 is a lead-out pipeline, the second process main pipe 3 is a lead-in pipeline and is connected with external P405, and the styrene solution in the tower is pumped out by a P405 pump and is input into the second process main pipe 3;
the three-way valve b5 is used for adjusting the flow direction of the medium, so that the analysis meter can be used normally, the first filter 6 is a self-cleaning filter which can filter out impurities in some media to prevent blocking pipelines or equipment, the pneumatic three-way valve 7 enables the medium to enter the analysis meter 8 or return to the first process main pipe 2, the first flow meter 9 is used for judging the flow rate of the medium entering the analysis meter and the process medium, and the first check valve 10 can prevent the medium from flowing back;
in the system, when a medium is measured, the total number of four flow loops are provided, wherein the first loop directly returns to the first process main pipe 2 from the second process main pipe 3 to the main loop valve 14, the second loop directly returns to the first process main pipe 2 through the second ball valve 13, the second flow meter 16, the second check valve 17 and the first ball valve 12, the flow volume of the loop entering the analysis meter 8 is controlled, the third loop passes through the second ball valve 13, the second filter 15, the first filter 6 from the measuring path of the three-way valve b5, the measuring path of the pneumatic three-way valve 7 and finally vaporizes in the atomizing pipe and enters the analysis meter 8, the fourth loop passes through the second ball valve 13, the second filter 15, the first filter 6 from the measuring path of the three-way valve b5, the return path of the pneumatic three-way valve 7, the first flow meter 9 and the first check valve 10, and finally returning to the first process main pipe 2, wherein the period time measured by a styrene analysis meter 8 is 10min, the first 15s of each period is injected, the rest time is discharged into the first process main pipe 2 through a loop four, a third loop is not communicated at the moment, as the medium is styrene, the styrene is not circulated for a long time and is easy to polymerize and solidify, the contact air is also polymerized and solidified, through arranging a high-pressure nitrogen bottle 1, adding a nitrogen pipeline before entering a three-way valve a4 in front of the analysis meter 8, opening the high-pressure nitrogen bottle 1, introducing nitrogen into the pipeline, introducing the nitrogen into the pipeline for blowing at fixed time, and giving positive pressure sealing protection to the nitrogen at ordinary times, the blowing time is 3-5 ml/min, the substances which can cause blockage and corrosion of the inside of the instrument and pipelines in the sample, and measuring the substances with interference, and adjusting the pressure, the temperature and the flow, the sample after handling is clean, pressure, temperature, flow accord with analytical instrument's operating requirement, can effectually prevent that styrene is direct and contact air and take place the polymerization, and then avoids the organic polymer that produces after the polymerization to make advance the appearance pipe valve and take place to block up, can lead to the unable incessant sample analysis that carries on of chromatogram for chromatographic analysis is more smooth, rapid.
A main loop valve 14 is connected between the first process main pipe 2 and the second process main pipe 3, a second filter 15 is connected to one side of the second process main pipe 3, and an output end of the second filter 15 is connected to an input end of the three-way valve b 5.
The primary loop valve 14 is normally used to open the bypass when not stopped or when the analyzer is not stopped, and the secondary filter 15 is a self-cleaning filter that can filter out some contaminants in the media to prevent clogging of the piping or equipment, a point of accuracy better than the primary filter 6.
One side of the second process main pipe 3 is connected with a second flowmeter 16, the output end of the second flowmeter 16 is connected with a second check valve 17, and the output end of the second check valve 17 is connected with one side of the first process main pipe 2.
The second flow meter 16 displays the opening degrees of the first ball valve 12 and the second ball valve 13 by the magnitude of the flow rate.
The working principle of the system for preventing the polymerization of the sampling tube of the styrene chromatographic analyzer provided by the invention is as follows:
when measuring media, there are four flow loops altogether, the first loop is from the second process main 3 to the main loop valve 14 and then directly returns to the first process main 2, the second loop is returned to the first process main 2 through the second ball valve 13, the second flow meter 16, the second check valve 17 and the first ball valve 12, and its function is to control the flow entering the loop of the analysis meter 8, the third loop is through the second ball valve 13, the second filter 15, the three-way valve b5, the first filter 6, the pneumatic three-way valve 7 and the analysis meter 8, the fourth loop is through the second ball valve 13, the second filter 15, the three-way valve b5, the first filter 6, the pneumatic three-way valve 7, the first flow meter 9, the first check valve 10 and the first process main 2, wherein the period time measured by the styrene analysis meter 8 is 10min, the first 15s of each period is injected, and the rest of the time is discharged to the first process main 2 through the loop four times, the third loop is not communicated at the moment, because the medium is styrene, the styrene is difficult to circulate for a long time and is easy to polymerize and solidify, the contact air is also polymerized and solidified, through arranging the high-pressure nitrogen cylinder 1, adding a nitrogen pipeline before entering the three-way valve a4 in front of the analysis table 8, introducing nitrogen into the pipeline by opening the high-pressure nitrogen cylinder 1, entering the pipeline through the nitrogen for blowing at regular time, and giving nitrogen positive pressure sealing protection at ordinary times, the styrene can be effectively prevented from directly polymerizing with the contact air.
Compared with the related art, the system for preventing the polymerization of the sampling tube of the styrene chromatographic analyzer has the following beneficial effects:
the system mainly uses the high-pressure nitrogen cylinder 1 and the three-way valve a4 to form a purging device, one path of purging is added before entering a styrene liquid analysis table 8, so that the pipeline can be purged regularly, organic impurities accumulated in the pipeline for a long time can be effectively removed, a sample meeting the requirements is obtained, the purging device has simple arrangement and convenient use, not only lightens the workload of each instrument worker in the system, but also reduces the shutdown time of the analyzer 8, and the nitrogen enters the pipeline to be purged at regular time, and the positive pressure sealing protection is provided at ordinary times, so that the polymerization of the styrene directly contacting with air can be effectively prevented, and further, the organic polymer generated after polymerization is prevented from blocking a sample introduction conduit valve, so that the chromatogram cannot be continuously and uninterruptedly analyzed, and the chromatographic analysis is smoother and quicker.
Second embodiment
Based on the system for preventing the polymerization of the sample tube of the styrene chromatograph, according to the first embodiment of the invention, the second embodiment of the invention provides another system for preventing the polymerization of the sample tube of the styrene chromatograph, wherein the second embodiment does not hinder the independent implementation of the technical solution of the first embodiment.
Specifically, the present invention provides another system for preventing polymerization of a sample tube of a styrene chromatograph, which is different from the system provided by the present invention in that:
the analysis meter 8 comprises a main body 18, moving grooves 19 are formed in the left side and the right side of the main body 18, a protection structure 20 is arranged outside the main body 18, and the protection structure 20 comprises a protection cover 201 and a sliding rod 202.
The number of the moving grooves 19 is four, the moving grooves are symmetrically arranged on the left side and the right side of the main body 18, the protective covers 201 are arranged on the outer portion of the main body 18 and have a protective effect on the outer portion of the main body 1, and the number of the sliding rods 202 is four and is respectively located in the four moving grooves 19.
The two ends of the sliding rod 202 are respectively fixedly connected with the two sides of the inner surface of the moving groove 19, the inner side of the protective cover 201 is fixedly connected with a sliding block 203, and the sliding block 203 is sleeved on the outer surface of the sliding rod 202.
The sliding block 203 is connected with the outer surface of the sliding rod 202 in a sliding manner, and is connected with the sliding rod 202 in a sliding manner through the sliding block 203, so that the protective cover 201 is limited.
The outer surface of the sliding rod 202 is sleeved with a buffer spring 204, and the top of the inner wall of the protective cover 201 is provided with a buffer pad 205.
The buffer spring 204 is located between the bottom of the slider 203 and the bottom of the inner surface of the moving groove 19, and provides elastic support for the slider 203, so that the slider 203 has elasticity, and the buffer pad 205 is made of elastic sponge material, and when the protective cover 201 approaches the top of the main body 1, the buffer pad 205 contacts the top of the main body 18, so that the protective cover 201 can play a role in buffering protection, and the protective cover 201 is prevented from being directly contacted with the main body 18 to cause damage.
The top of protection casing 201 has seted up guiding gutter 206, the top of protection casing 201 rotates to be connected with handle 207.
The guiding gutter 206 is used for the drainage, because the protection casing 201 top is the tilt state, when the external world has water to drop to protection casing 201 top, in time discharge water through guiding gutter 206, avoid flowing into in the main part 18, when needing to remove the main part 18, can be through turning up handle 207, then hold handle 207 and remove, through setting up this protective structure 20, mainly play anticollision to main part 1, dustproof and waterproof effect, play fine guard action to main part 18 when using, avoid main part 18 to receive the damage, wherein through setting up protection casing 201, slider 203, slide bar 202 and buffer spring 204, constitute buffer structure, when receiving the collision at protection casing 201 top, utilize buffer spring 204 and slider 203's activity, subdue the effort that produces, and then play certain buffering guard action.
The outer part of the main body 1 is provided with a protective layer 21, two grooves 22 are formed in the protective layer 21, and elastic balls 23 are arranged in the grooves 22.
21 position silica gel materials of protective layer can play the guard action to the outside of main part 1, and recess 22 is provided with two altogether, and is located the inside left and right sides of protective layer 21 respectively, and elastic ball 23 can increase the elasticity in protective layer 21 string angular position, when receiving the collision, can play fine guard action.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A system for preventing polymerization of a sample inlet tube of a styrene chromatograph, comprising:
the high-pressure nitrogen cylinder, the first process main pipe and the second process main pipe;
the system comprises a high-pressure nitrogen cylinder, a three-way valve a, a three-way valve b, a first filter, a pneumatic three-way valve, an analysis meter, a first flow meter, a first check valve and a second check valve, wherein the three-way valve a is connected to one side of the high-pressure nitrogen cylinder, the output end of the three-way valve a is connected with the three-way valve b, the output end of the three-way valve b is connected with the first filter, the output end of the first filter is connected with the pneumatic three-way valve, the output end of the pneumatic three-way valve is connected;
the liquid sign bottle, the liquid sign bottle connect in the input of three-way valve a, the first technology is responsible for and all is provided with first ball valve and second ball valve on the second technology is responsible for.
2. The system for preventing the polymerization of the sample inlet pipe of the styrene chromatographic analyzer as claimed in claim 1, wherein a main loop valve is connected between the first process main pipe and the second process main pipe, a second filter is connected to one side of the second process main pipe, and the output end of the second filter is connected with the input end of the three-way valve b.
3. The system for preventing the polymerization of the sampling tube of the styrene chromatographic analyzer as claimed in claim 1, wherein a second flow meter is connected to one side of the second process main tube, a second check valve is connected to the output end of the second flow meter, and the output end of the second check valve is connected to one side of the first process main tube.
4. The system for preventing the polymerization of the sampling tube of the styrene chromatographic analyzer as claimed in claim 1, wherein the analyzer comprises a main body, moving grooves are formed in the left side and the right side of the main body, and a protective structure is arranged outside the main body and comprises a protective cover and a sliding rod.
5. The system for preventing the polymerization of the sample inlet pipe of the styrene chromatographic analyzer as claimed in claim 4, wherein two ends of the sliding rod are respectively and fixedly connected with two sides of the inner surface of the moving groove, and a sliding block is fixedly connected to the inner side of the protective cover and sleeved on the outer surface of the sliding rod.
6. The system for preventing the polymerization of the sample inlet pipe of the styrene chromatographic analyzer as claimed in claim 4, wherein a buffer spring is sleeved on the outer surface of the sliding rod, and a buffer pad is arranged on the top of the inner wall of the protective cover.
7. The system for preventing the polymerization of the sampling tube of the styrene chromatographic analyzer as claimed in claim 4, wherein a diversion trench is formed in the top of the protective cover, and a handle is rotatably connected to the top of the protective cover.
8. The system for preventing the polymerization of the sample inlet pipe of the styrene chromatograph according to claim 4, wherein a protective layer is arranged outside the main body, two grooves are formed inside the protective layer, and an elastic ball is arranged inside the grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010924882.6A CN111855874B (en) | 2020-09-05 | 2020-09-05 | System for preventing styrene chromatographic analyzer sample tube from polymerizing |
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| CN202010924882.6A CN111855874B (en) | 2020-09-05 | 2020-09-05 | System for preventing styrene chromatographic analyzer sample tube from polymerizing |
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| CN111855874B CN111855874B (en) | 2024-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115656404A (en) * | 2022-11-01 | 2023-01-31 | 江苏中创清源科技有限公司 | Catalytic combustion easily polymerizes class VOCs's catalyst performance detection device |
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| CN111855874B (en) | 2024-08-23 |
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