CN114505287A - Cleaning method and cleaning equipment for sample pipeline of process gas chromatograph - Google Patents
Cleaning method and cleaning equipment for sample pipeline of process gas chromatograph Download PDFInfo
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- CN114505287A CN114505287A CN202210074831.8A CN202210074831A CN114505287A CN 114505287 A CN114505287 A CN 114505287A CN 202210074831 A CN202210074831 A CN 202210074831A CN 114505287 A CN114505287 A CN 114505287A
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- gas chromatograph
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- 238000000034 method Methods 0.000 title claims abstract description 109
- 230000008569 process Effects 0.000 title claims abstract description 90
- 238000004140 cleaning Methods 0.000 title claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims description 144
- 239000007788 liquid Substances 0.000 claims description 82
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 76
- 238000007664 blowing Methods 0.000 claims description 56
- 230000008676 import Effects 0.000 claims description 51
- 238000002347 injection Methods 0.000 claims description 31
- 239000007924 injection Substances 0.000 claims description 31
- 230000002093 peripheral effect Effects 0.000 claims description 30
- 239000012535 impurity Substances 0.000 claims description 25
- 238000003860 storage Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011550 stock solution Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 95
- 244000309464 bull Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The application relates to cleaning equipment for a cleaning method of an application process gas chromatograph sample pipeline, and relates to the field of equipment cleaning. This application makes the inside sample pipeline of process gas chromatograph need not to follow and just can wash from process gas chromatograph to also reduced the cleaning cost of sample pipeline when having reduced the inside sample pipeline's of chromatograph washing degree of difficulty.
Description
Technical Field
The application relates to the field of equipment cleaning, in particular to a cleaning method and a cleaning device for a sample pipeline of a process gas chromatograph.
Background
Because the sample pipeline in the process gas chromatograph is polluted by the sample for a plurality of times, the pollutants are firmly attached to the inner wall of the sample pipeline of the chromatograph by long-term high-temperature heating. The contaminated sample pipeline is easy to generate strange peaks, miscellaneous peaks and other conditions when being reused, so that the analysis and measurement results are influenced, and the quantitative volume of the sample quantitative tube can be changed, so that the sample pipeline needs to be cleaned regularly to ensure the cleanness of a sampling pipeline system in a chromatograph and the accuracy and inexactness of the quantitative volume of the sample.
In a common cleaning method, all sample pipelines and sampling valves in a chromatograph need to be disassembled and placed in an ultrasonic cleaning machine for cleaning, but the cleaning method is difficult and has high technical requirements on operators, and the risk of expanding pollution to a gas circuit of a chromatographic column system is also caused.
Therefore, the currently common cleaning method is to replace the whole sample pipeline and sampling valve in the chromatograph, that is, to use the sample pipeline and sampling valve in the chromatograph as disposable consumables. However, these consumables are expensive and are not suitable for field use because they are replaced more frequently for some samples that are prone to clogging.
Disclosure of Invention
In order to reduce the cleaning difficulty of a sample pipeline inside a chromatograph and reduce the cleaning cost of the sample pipeline, the application provides a cleaning method and cleaning equipment for the sample pipeline of the process gas chromatograph.
In a first aspect, the present application provides a method for cleaning a sample line of a process gas chromatograph, which adopts the following technical scheme:
a method for cleaning a sample pipeline of a process gas chromatograph specifically comprises the following steps:
step 1, switching a full-automatic operation state of a process gas chromatograph into a stop state, so that a quantitative tube of a sampling valve is communicated with a sample pipeline;
step 2, disconnecting the connection between the process sample pipeline and the sample inlet and the sample outlet of the sample pipeline in the process gas chromatograph;
step 4, disconnecting the connection between the instrument air of 0.4Mpa and the sample inlet of the process gas chromatograph, injecting a certain amount of acetone into the sample inlet of the process gas chromatograph until the acetone flows out from the sample outlet of the process gas chromatograph, and observing whether the acetone flowing out from the sample outlet of the process gas chromatograph is turbid or not;
step 7, connecting the instrument air of 0.4Mpa to a sample inlet of the process gas chromatograph again, and blowing residual acetone in a sample pipeline inside the process gas chromatograph out from a sample outlet;
and 8, reconnecting the process sample pipeline with the sample inlet and the sample outlet of the process gas chromatograph, and recovering the automatic running state of the process gas chromatograph.
Through adopting above-mentioned technical scheme, the inside sample pipeline of process gas chromatograph need not to take off from process gas chromatograph, has avoided the sample pipeline to install step on process gas chromatograph again after the clearance, and makes the sample pipeline can manifold cycles use to also reduce the washing cost of sample pipeline when having reduced the washing degree of difficulty of the inside sample pipeline of chromatograph.
In a second aspect, the present application provides a cleaning apparatus for a method for cleaning a sample line of a process gas chromatograph, which adopts the following technical solution:
the utility model provides a cleaning equipment of application process gas chromatograph sample pipeline's cleaning method, which comprises a bracket, the sample import department that is close to process gas chromatograph on the support is provided with the subassembly of blowing that is used for blowing in 0.4 Mpa's instrument air to the sample import, the sample import department that is close to process gas chromatograph on the support still is provided with the notes liquid subassembly that is used for injecting acetone to the sample import, be provided with the conversion subassembly that is used for the conversion to blow the subassembly and annotates the position angle of liquid subassembly on the support, the sample exit that is close to process gas chromatograph on the support is provided with the collection subassembly that is used for carrying out the impurity gas in the sample pipeline and impurity liquid and collects.
Through adopting above-mentioned technical scheme, when cleaning equipment washs the inside sample pipeline of process gas chromatograph, thereby blow through the intercommunication of the subassembly of blowing and sample export to the inside of sample pipeline, thereby through injection subassembly and sample export intercommunication to the inside injection acetone of sample pipeline, thereby collect impure gas and impurity liquid in with the sample pipeline through collecting subassembly and sample exit linkage, thereby reduce the risk that impure gas and impurity liquid and external contact led to the fact harm to external environment, make the inside sample pipeline of process gas chromatograph need not to take off from process gas chromatograph and just can wash, thereby also reduced the cleaning cost of sample pipeline when having reduced the washing degree of difficulty of the inside sample pipeline of chromatograph.
Preferably, the blowing assembly comprises an air storage tank filled with instrument air, a deflation valve communicated with the outlet of the air storage tank, and a blowing pipe communicated with the outlet of the deflation valve, wherein one end of the blowing pipe, which is far away from the deflation valve, is used for being communicated with the sample inlet.
Through adopting above-mentioned technical scheme, when the subassembly of blowing blows to the sample pipeline, at first communicate gas blow pipe and sample import, secondly open the bleed valve, the instrument air flows out the gas holder and flows to the sample import from the bleed valve, because the air has certain pressure on one side, therefore the instrument air that flows has certain speed, can sweep out the impurity in the sample pipeline to the impurity that realizes the subassembly of blowing sweeps the effect, the impurity that sweeps out removes to the sample exit gets into in the collection subassembly.
Preferably, annotate the liquid subassembly including the stock solution bag that is equipped with acetone, the intercommunication sets up the notes liquid valve in the stock solution bag exit and the intercommunication sets up the notes liquid pipe in the exit of annotating the liquid valve, annotate the one end that the liquid pipe kept away from annotate the liquid valve and be used for with sample import intercommunication.
Through adopting above-mentioned technical scheme, when annotating the liquid subassembly and injecting acetone in to the sample pipeline, at first will annotate the liquid pipe and communicate with the sample import, secondly open and annotate the liquid valve and make during acetone flows into the sample pipeline through annotating liquid pipe and sample import, flow out from the sample exit until acetone for acetone is full of whole sample pipeline, so that acetone dissolves the clearance to the inside residual impurity of sample pipeline.
Preferably, the conversion assembly comprises a conversion sleeve coaxially sleeved on the support in a sliding manner, the conversion sleeve is vertically arranged and is horizontally provided with a first conversion rod fixedly connected with the gas storage tank right above the peripheral wall of the sample inlet, a second conversion rod fixedly connected with the liquid storage bag is horizontally arranged right above the peripheral wall of the conversion sleeve right above the first conversion rod, a conversion sliding block is fixedly arranged on the peripheral wall of the support right above the sample inlet, a conversion sliding groove group for driving the first conversion rod and the second conversion rod to be adjusted and rotated is arranged on the inner peripheral wall of the conversion sleeve, and the conversion sliding groove group is slidably connected with the conversion sliding block.
Through adopting above-mentioned technical scheme, need change the position of blowing subassembly and injection subassembly after blowing to the sample pipeline when the subassembly of blowing for the injection subassembly is close to the sample export so that with sample exit linkage, slide in the conversion spout group through the conversion slider, thereby lead the slide position of conversion slider, through vertical slip and coaxial rotation of conversion sleeve on the support, thereby make the conversion slider slide in the conversion spout group, thereby adjust the position of injection subassembly and the subassembly of blowing.
Preferably, conversion spout group is including seting up the first switching groove of just to first conversion pole department in the internal perisporium of conversion sleeve, seting up the second switching groove of just to second conversion pole department in the internal perisporium of conversion sleeve and seting up the third switching groove that communicates first switching groove and second switching groove on the internal perisporium of conversion sleeve, first switching groove and the vertical laying of second switching groove, the third switching groove level is laid and is communicate with the bottom of first switching groove and second switching groove, first switching groove, second switching groove and third switching groove all with conversion slider sliding connection.
By adopting the technical scheme, when the injection assembly moves to a position close to the sample inlet, the conversion sleeve is lifted vertically upwards at first, so that the conversion sliding block vertically downwards slides in the first conversion groove relative to the first conversion groove until the conversion sliding block is positioned in the third conversion groove, then the conversion sleeve is coaxially rotated, so that the conversion sliding block slides in the third conversion groove along the direction close to the second conversion groove until the conversion sliding block is positioned at the bottom end of the second conversion groove, and finally the conversion sleeve is vertically downwards moved, so that the conversion sliding block vertically upwards slides in the second conversion groove relative to the second conversion groove until the conversion sliding block is abutted against the top of the second conversion groove, at the moment, the position of the injection assembly is adjusted to a position close to the sample inlet, and the position conversion of the injection assembly and the air blowing assembly is realized.
Preferably, the collecting assembly comprises a collecting box, a collecting pipe and a collecting fan, the collecting pipe is arranged on the collecting box in a communicated mode, the collecting fan is arranged at the top of the collecting box, one end of the collecting pipe is communicated with the top of the collecting box, an outlet piece communicated with a sample outlet is arranged at the other end of the collecting pipe, a vent hole is further formed in the top of the collecting pipe, the collecting fan is located at the vent hole in the top of the collecting box, the outlet piece comprises an interface tube in threaded connection with the collecting pipe, and a sealing ring used for abutting against the outer peripheral wall of the sample outlet is arranged on the inner peripheral wall of the interface tube.
Through adopting above-mentioned technical scheme, when collecting the inside impurity gas of subassembly to the sample and impurity liquid and collect, at first insert the collecting pipe sample outlet, rotatory interface tube afterwards, make the interface tube cover establish the periphery wall that sample outlet and sealing ring support tight sample outlet, thereby strengthen the leakproofness of collecting pipe and sample outlet, secondly open the collection fan, collect the air in the fan extraction collecting box, because the reason of pressure, impurity liquid or impurity gas in the sample pipeline can move to the collecting box through sample outlet and collecting pipe, thereby realize collecting the effect that the subassembly was collected impurity liquid and impurity gas.
Preferably, be provided with between gas blow pipe, notes liquid pipe and the sample import and be used for making the gas blow pipe all can dismantle the coupling assembling of being connected with the sample import with annotating the liquid pipe, coupling assembling is including dismantling the connecting sleeve of connection in sample import department and fixing the connector on gas blow pipe and notes liquid pipe, is provided with on the connecting sleeve and can dismantle the first joint spare of being connected and can dismantle the second joint spare of being connected with the connector with the sample import.
Through adopting above-mentioned technical scheme, coupling assembling can improve the gas blow pipe, annotate the connection stability of liquid pipe and sample import, can dismantle the connection with adapter sleeve and sample import through first joint spare, thereby realize adapter sleeve and gas blow pipe or annotate the dismantlement of liquid pipe and connect through the joint of second joint spare and connector, so that the change repeatedly of gas blow pipe and notes liquid pipe of sample import department, and do not influence the shape of sample import, and then keep the structural integrity of sample import, thereby improve the gas blow pipe, annotate the structural flexibility of liquid pipe and sample import.
Preferably, first joint spare includes that two sets of levels lay lower joint group relatively, and lower joint group includes that the horizontal slip sets up and supports tight board and be located and support tight board top horizontal slip down and set up the lower grip block on connecting sleeve under connecting sleeve, is provided with in the connecting sleeve along clockwise or anticlockwise pivoted lower bull stick, and the lower extreme and the lower tight board of supporting of lower bull stick are articulated mutually, and the upper end and the lower grip block of lower bull stick are articulated mutually, and the level is provided with the lower reset spring who is used for connecting sleeve and lower bull stick in the connecting sleeve.
By adopting the technical scheme, when the connecting sleeve is vertically and downwards coaxially sleeved on the sample inlet in a sliding manner, the lower abutting plate abuts against the sample inlet, thereby pushing the lower abutting plate to horizontally slide on the connecting sleeve along the axial direction far away from the connecting sleeve, driving the lower clamping plate to horizontally slide on the connecting sleeve along the axial direction close to the connecting sleeve by pushing the lower rotating rod to rotate by the lower abutting plate until the lower clamping plate abuts against the outer peripheral wall of the sample inlet, at the moment, the lower reset spring contracts, the connecting sleeve stops vertically moving downwards, thereby realizing the clamping connection of the connecting sleeve and the sample inlet, when the connecting sleeve vertically and upwards slides coaxially to be far away from the sample inlet, support under and keep away from mutually of tight board and sample import, thereby lower reset spring extends and drives down the lower rocking beam pivoted and drive down the grip block and remove along the axis direction of keeping away from connecting sleeve simultaneously to realize connecting sleeve and sample import's the connection of dismantling.
Preferably, the connector is the coaxial connection snap ring of fixing on the gas blow pipe or annotate the liquid pipe, the fixed vertical connection slide bar of laying of connection snap ring bottom, second joint spare includes the link block that two levels were laid relatively, set up the gliding upper chute that supplies link block level on the internal perisporium of link sleeve, the level is provided with reset spring in the link sleeve, it is located the spout and is used for connecting link sleeve and link block to go up reset spring, link sleeve's up end is vertical set up with the tight groove of supporting of last spout intercommunication, be used for supplying to connect the vertical slip of slide bar to insert and support and tightly promote link block along being close to the slide of link sleeve axis direction, link block and the inconsistent perisporium of connecting the slide bar are the inclined plane of laminating each other.
Through adopting above-mentioned technical scheme, when the gas blow pipe or annotate the vertical coaxial slip of liquid pipe and insert the sample import, connect the vertical slip of slide bar and insert and support tight groove, thereby connect slide bar and link block to support tightly each other and continue downstream along with connecting the slide bar and promote link block along the axis direction horizontal slip that is close to connecting sleeve, go up reset spring extension, support the periphery wall of tight gas blow pipe or notes liquid pipe until link block, thereby realize gas blow pipe or annotate liquid pipe and connecting sleeve's joint, when gas blow pipe or annotate the vertical coaxial slip of liquid pipe break away from the sample import, link block is kept away from to the link bar, thereby go up reset spring and retract and drive link block and keep away from gas blow pipe or annotate liquid pipe along the direction level of keeping away from the axis, thereby realize gas blow pipe or annotate liquid pipe and connecting sleeve's dismantlement and be connected.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the inside of the sample pipeline is blown by the blowing assembly, acetone is injected into the inside of the sample pipeline by the injection assembly, and impurity gas and impurity liquid in the sample pipeline are collected by the collecting assembly, so that the sample pipeline in the process gas chromatograph can be cleaned without being taken down from the process gas chromatograph, the cleaning difficulty of the sample pipeline in the chromatograph is reduced, and the cleaning cost of the sample pipeline is also reduced;
2. the conversion sliding block slides in the conversion sliding groove group, so that the sliding position of the conversion sliding block is guided, the rotation angle of the conversion sleeve is adjusted, and the positions of the injection assembly and the air blowing assembly are adjusted;
3. can dismantle the connecting sleeve with the sample import through first joint spare and be connected, thereby realize the connecting sleeve and blow pipe or annotate the dismantlement of liquid pipe and be connected through the joint of second joint spare and connector to the change repeatedly of sample import department blow pipe and notes liquid pipe, and do not influence the shape of sample import, and then keep the structural integrity of sample import, thereby improve the structural flexibility of blow pipe, notes liquid pipe and sample import.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a cleaning apparatus using a method for cleaning a sample line of a process gas chromatograph according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a conversion module in an embodiment of the present application.
Fig. 3 is a schematic structural view of a connecting assembly in an embodiment of the present application.
Fig. 4 is a schematic view of the structure of the outlet member in the present embodiment.
In the figure: 1. a support; 2. a blowing assembly; 21. a gas storage tank; 22. a deflation valve; 23. an air blowing pipe; 3. a liquid injection assembly; 31. a liquid storage bag; 32. a liquid injection valve; 33. a liquid injection pipe; 4. a conversion component; 41. a conversion sleeve; 411. a first transition slot; 412. a second transfer tank; 413. a third conversion tank; 42. a first conversion lever; 43. a second switching lever; 44. a conversion slide block; 5. a collection assembly; 51. a collection box; 52. a collection pipe; 53. a collection fan; 54. an outlet member; 541. a mouthpiece; 542. a seal ring; 6. a connecting assembly; 61. a connecting sleeve; 62. a connector; 621. connecting a snap ring; 622. connecting a sliding rod; 63. a first clip member; 631. a lower abutting plate; 632. a lower clamping plate; 633. a lower rotating rod; 634. a lower return spring; 64. a second clip member; 641. connecting the sliding block; 642. an upper return spring; 7. a sample line; 8. a sample inlet; 9. and (4) a sample outlet.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a method for cleaning a sample pipeline 7 of a process gas chromatograph, which specifically comprises the following steps:
step 1, switching a full-automatic operation state of a process gas chromatograph to a stop state, so that a quantitative tube of a sampling valve is communicated with a sample pipeline 7 to prevent the quantitative tube from being switched to a carrier gas column system loop;
step 2, disconnecting the connection of the process sample pipeline and the sample inlets 8 and the sample outlets 9 at the two ends of the sample pipeline 7 in the process gas chromatograph;
step 4, disconnecting the instrument air of 0.4Mpa from the sample inlet 8 of the process gas chromatograph, injecting a certain amount of acetone into the sample inlet 8 of the process gas chromatograph until the acetone flows out from the sample outlet 9 of the process gas chromatograph, and observing whether the acetone flowing out from the sample outlet 9 of the process gas chromatograph is turbid or not;
step 7, connecting the instrument air of 0.4Mpa to a sample inlet 8 of the process gas chromatograph again, and purging residual acetone in a sample pipeline 7 in the process gas chromatograph out from a sample outlet 9;
and 8, reconnecting the process sample pipeline with the sample inlet 8 and the sample outlet 9 of the process gas chromatograph, and recovering the automatic running state of the process gas chromatograph.
The embodiment of the application also discloses cleaning equipment applying the cleaning method of the sample pipeline of the process gas chromatograph. Referring to fig. 1, the cleaning apparatus includes a support 1, a blowing assembly 2, a liquid injection assembly 3, a conversion assembly 4, a collection assembly 5, and a connection assembly 6. Be provided with sample pipeline 7 in the process gas chromatograph, the process gas chromatograph top is provided with sample import 8 and sample outlet 9, and sample pipeline 7's one end is fixed with sample import 8 intercommunication, and sample pipeline 7's the other end is fixed with sample outlet 9 intercommunication to draw sample gas from the outside.
Wherein support 1 is placed on ground and is close to process gas chromatograph department, and the subassembly of blowing 2 sets up on support 1 and is located and is close to sample import 8 department, is convenient for blow into 0.4 Mpa's instrument air to sample import 8. Annotate liquid subassembly 3 and set up on support 1 and be located near sample import 8 department, be convenient for pour into acetone into to sample import 8. Because annotate liquid subassembly 3 and the subassembly 2 of blowing all is located and is close to sample import 8 department on support 1, is provided with conversion assembly 4 in support 1 is close to sample import 8 department, annotates liquid subassembly 3 and the subassembly 2 of blowing all is connected with conversion assembly 4, adjusts the position of annotating liquid subassembly 3 and the subassembly 2 of blowing through conversion assembly 4 to in annotate liquid subassembly 3 and the subassembly 2 of blowing all is connected with sample import 8.
In addition, the connecting assembly 6 is positioned among the liquid injection assembly 3, the air blowing assembly 2 and the sample inlet 8, so that the liquid injection assembly 3 and the air blowing assembly 2 are detachably connected with the sample inlet 8, and air blowing and acetone injection into the sample pipeline 7 are facilitated. Collect subassembly 5 and set up on support 1 and be close to sample outlet 9 department, and communicate so that collect impure gas and impurity liquid in sample pipeline 7 with sample outlet 9 to thereby reduce impure gas and impurity liquid and external contact and cause the risk of harm to external environment.
In the whole process that cleaning equipment washs sample pipeline 7, the inside sample pipeline 7 of process gas chromatograph need not to take off from process gas chromatograph to also reduced sample pipeline 7's washing cost when having reduced the inside sample pipeline 7's of chromatograph washing difficulty.
Referring to fig. 1, the blowing assembly 2 includes a gas storage tank 21, a release valve 22 and a blowing pipe 23, instrument air with a certain pressure is also filled in the gas storage tank 21, an inlet end of the release valve 22 is fixedly communicated with an opening of the gas storage tank 21, one end of the blowing pipe 23 is fixedly communicated with an outlet end of the release valve 22, the other end of the blowing pipe 23 is detachably communicated with the sample inlet 8, and the blowing pipe 23 is a hose so as to manually drive the blowing pipe 23 to vertically slide and insert into or keep away from the sample inlet 8. The air release valve 22 is opened, and meter air with a certain pressure enters the sample inlet 8 from the air blowing pipe 23, so that residual impurity gas in the sample pipeline 7 is blown into the collection assembly 5 from the sample outlet 9 for collection.
Referring to FIG. 1, the injection assembly includes a reservoir bag 31, a priming valve 32, and a priming tube 33. A certain amount of acetone liquid is equipped with in the stock solution bag 31, and the entrance point of annotating liquid valve 32 is fixed with the export intercommunication of stock solution bag 31, and the one end of annotating liquid pipe 33 is fixed with the exit end intercommunication of annotating liquid valve 32, and the other end of annotating liquid pipe 33 can be dismantled with sample import 8 and be connected, and annotate liquid pipe 33 and be the hose to manual drive annotates the vertical slip of liquid pipe 33 and insert or keep away from sample import 8. Opening the injection valve 32 allows acetone to flow into the sample pipe 7 through the injection pipe 33, thereby dissolving and removing residual impurities on the pipe wall of the sample pipe 7.
Referring to fig. 1 and 2, the conversion assembly 4 includes a conversion sleeve 41, a first conversion lever 42, a second conversion lever 43, and a conversion slider 44.
The conversion sleeve 41 is coaxially sleeved on the support 1 in a sliding manner along the vertical direction, the first conversion rod 42 is horizontally arranged, one end of the first conversion rod is fixed on the peripheral wall of the conversion sleeve 41 opposite to the sample inlet 8, the other end of the first conversion rod 42 points to the sample inlet 8 and is fixedly connected with the air storage tank 21, the second conversion rod 43 is horizontally arranged, one end of the second conversion rod is fixed on the peripheral wall of the conversion sleeve 41 opposite to the first conversion rod 42, the other end of the second conversion rod 43 is arranged in a direction deviating from the conversion sleeve 41 and is provided with a hook for hanging the liquid storage bag 31, and the liquid storage bag 31 is placed on the second conversion rod 43 through the hook. The conversion slider 44 is fixed on the peripheral wall of the bracket 1 facing the sample inlet 8, and the inner peripheral wall of the conversion sleeve 41 is provided with a conversion sliding groove group in sliding connection with the conversion slider 44, so that the moving direction of the conversion sleeve 41 is guided by the sliding connection of the conversion sliding groove group and the conversion slider 44, and the first conversion rod 42 and the second conversion rod 43 are driven to rotate.
The switching chute group further includes a first switching chute 411, a second switching chute 412 and a third switching chute 413. The first conversion groove 411 is vertically arranged on the inner peripheral wall of the conversion sleeve 41 and faces the first conversion rod 42, the second conversion groove 412 is vertically arranged on the inner peripheral wall of the conversion sleeve 41 and faces the second conversion rod 43, the second conversion groove 412 and the first conversion groove 411 are horizontally arranged oppositely, the third conversion groove 413 is arranged on the inner peripheral wall of the conversion sleeve 41 and located between the first conversion groove 411 and the second conversion groove 412, and the third conversion groove 413 is horizontally arranged and communicated with the bottoms of the first conversion groove 411 and the second conversion groove 412. The conversion slider 44 is slidable in the first conversion groove 411, the second conversion groove 412, and the third conversion groove 413.
When the first switch lever 42 is located at a position facing the sample outlet 9, the switch slider 44 slides in the first switch slot 411 and is located at the top of the first switch slot 411, thereby defining the position of the first switch lever 42; when the second switching lever 43 is adjusted to be located at the position facing the sample outlet 9, the switching sleeve 41 is first moved vertically upward until the switching slider 44 is located at the bottom of the first switching groove 411, then the switching sleeve 41 is coaxially rotated so that the switching slider 44 is moved in the third switching groove 413 in the direction close to the second switching groove 412 until the switching slider 44 is located at the bottom of the second switching groove 412, and finally the switching sleeve 41 is moved vertically downward until the switching slider 44 is located at the top of the second switching groove 412, thereby achieving the effect of changing the positions of the air blowing assembly 2 and the liquid injecting assembly 3.
Referring to fig. 1 and 3, the connection assembly 6 includes a connection sleeve 61, a connection head 62, a first catching member 63, and a second catching member 64. The connecting sleeve 61 is coaxially and slidably sleeved on the sample inlet 8, and two connecting heads 62 are arranged at one ends of the blowing pipe 23 and the injection pipe 33 close to the sample inlet 8 respectively. The connector 62 comprises a connecting snap ring 621 coaxially and fixedly sleeved on the blowing pipe 23 or the injection pipe 33, and a connecting slide rod 622 is vertically fixed at the bottom end of the connecting snap ring 621. First joint spare 63 is located connecting sleeve 61 and makes connecting sleeve 61 and sample import 8 can dismantle the connection, and second joint spare 64 is located connecting sleeve 61 and is located first joint spare 63 top, and second joint spare 64 makes connecting sleeve 61 and gas blow pipe 23 or annotate liquid pipe 33 can dismantle the joint.
Wherein the first clamping member 63 comprises two lower clamping sets which are horizontally arranged oppositely. The lower clamping set comprises a lower abutting plate 631, a lower clamping plate 632, a lower rotating rod 633 and a lower return spring 634. The lower abutting plate 631 is horizontally slidably disposed on the inner peripheral wall of the connecting sleeve 61 in a direction close to or away from the axis, and the lower abutting plate 631 is an inclined plate that is vertically downward and inclined in a direction toward the connecting sleeve 61. The lower clamping plate 632 is located above the lower abutting plate 631, and is horizontally slidably disposed on the inner peripheral wall of the connecting sleeve 61 along a direction close to or away from the axis, and an end surface of the lower clamping plate 632 close to the axis is an arc surface attached to the outer peripheral wall of the sample inlet 8. The lower rotating rod 633 is vertically arranged and is rotatably arranged inside the connecting sleeve 61 along the clockwise or counterclockwise direction, the upper end of the lower rotating rod 633 is hinged with the lower clamping plate 632, and the lower end of the lower rotating rod 633 is hinged with the lower abutting plate 631. The lower return spring 634 is horizontally disposed, and one end of the lower return spring 634 is fixed to the lower end of the lower rotating shaft 633, and the other end of the lower return spring 634 is fixed to the connecting sleeve 61.
When the vertical downward slip cover of connecting sleeve 61 is established on sample import 8, it is inconsistent with the 8 periphery walls of sample import to support tight board 631 down, make and support tight board 631 down along the axis direction slip of keeping away from connecting sleeve 61, it rotates through promoting down bull stick 633 and makes drive down clamping plate 632 along the axis direction slip that is close to connecting sleeve 61 down to support tight board 631 down, it is tight with the periphery walls of sample import 8 to support tight board 632 down until, thereby realize connecting sleeve 61 and sample import 8's the joint of dismantling, and do not influence the shape of sample import 8, and then keep sample import 8's structural integrity.
In addition, the second clamping member 64 includes two connecting sliding blocks 641 horizontally arranged oppositely and two upper return springs 642 horizontally arranged oppositely. The upper chute that is connected with the link slider 641 in a sliding manner is seted up to the level on the internal perisporium of adapter sleeve 61, and the link slider 641 level is followed the direction of being close to or keeping away from the axis and is slided, and the relative terminal surface of two link sliders 641 is the cambered surface of laminating with the outer wall of gas blow pipe 23 or notes liquid pipe 33. The upper return spring 642 is located in the upper sliding groove, and one end of the upper return spring 642 is fixed to the end surface of the connecting slider 641 deviating from each other, and the other end of the upper return spring 642 is fixed to the connecting sleeve 61. The upper end face of the connecting sleeve 61 is vertically provided with a tight abutting groove for the vertical sliding insertion of the connecting slide bar 622, and the tight abutting groove is communicated with the upper sliding groove.
Therefore, the connecting slide rod 622 can abut against the connecting slide block 641 and push the connecting slide block 641 to slide along the axial direction of the connecting sleeve 61 until the connecting slide block 641 abuts against the outer peripheral wall of the air blowing pipe 23 or the liquid injection pipe 33 in the process of sliding and inserting into the abutting groove, so that the connecting sleeve 61 and the air blowing pipe 23 or the liquid injection pipe 33 can be detachably clamped.
Referring to fig. 1 and 4, the collection assembly 5 includes a collection tank 51, a collection pipe 52, and a collection fan 53. The collecting box 51 is arranged on the bracket 1, one end of the collecting pipe 52 is fixedly communicated with the top of the collecting box 51, the other end of the collecting pipe 52 is detachably communicated with the sample outlet 9, the top end of the collecting box 51 is provided with a vent hole, and the collecting fan 53 is horizontally arranged and arranged at the vent hole of the collecting box 51. By opening the collection fan 53, the gas in the collection box 51 is driven to flow outwards, and the impurity gas and the impurity liquid in the sample pipeline 7 are driven to flow into the collection box 51 for collection due to the pressure.
In addition, an outlet member 54 detachably connected with the sample outlet 9 is arranged at one end of the collecting pipe 52 communicated with the sample outlet 9, the outlet member 54 comprises a connector 541 and a sealing ring 542, the connector 541 is coaxially sleeved on the collecting pipe 52 and is in threaded connection with the collecting pipe 52, the sealing ring 542 is coaxially fixed on the position, close to the sample outlet 9, of the inner peripheral wall of the connector 541, when the collecting pipe 52 is communicated with the sample outlet 9, the collecting pipe 52 is firstly inserted into the sample outlet 9, then the connector 541 is rotated to enable the connector 541 to move in the direction close to the sample outlet 9 until the inner peripheral wall of the sealing ring 542 abuts against the outer peripheral wall of the sample outlet 9, and therefore detachable communication between the collecting pipe 52 and the sample outlet 9 is achieved.
The implementation principle of the cleaning equipment applying the method for cleaning the sample pipeline of the process gas chromatograph is as follows: firstly, the collecting pipe 52 is inserted into the sample outlet 9 in a sliding way, the collecting pipe 52 is detachably connected with the sample outlet 9 through the outlet part 54, secondly, the blowing pipe 23 is inserted into the sample inlet 8 in a sliding way, the blowing pipe is detachably clamped with the sample inlet 8 through the connecting assembly 6, the air release valve 22 is opened to blow instrument air into the sample pipeline 7, meanwhile, the collecting fan 53 is opened to remove residual impurities in the sample pipeline 7, then, the air release valve 22 is closed, the injection assembly is close to the sample outlet 9 through the conversion assembly 4, then, the liquid injection pipe 33 is inserted into the sample inlet 8 in a sliding way, the connecting assembly 6 is detachably clamped with the sample inlet 8, the liquid injection valve 32 is opened, acetone flows into the sample pipeline 7 until the acetone flows out of the sample outlet 9, the collecting fan 53 and the liquid injection valve 32 are closed to stand, then, the collecting fan 53 and the liquid injection valve 32 are opened again to replace the acetone in the sample pipeline 7, repeating the operation for several times until the acetone flowing into the collecting box 51 is clear, finally enabling the air blowing assembly 2 to be close to the sample outlet 9 through the conversion assembly 4, enabling the air blowing pipe 23 to be inserted into the sample inlet 8 in a sliding mode, opening the air release valve 22, blowing the instrument air into the sample pipeline 7, and blowing the acetone remained in the sample pipeline 7 into the collecting box 51, and finally reducing the cleaning difficulty of the sample pipeline 7 in the chromatograph, so that the cleaning cost of the sample pipeline 7 is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A method for cleaning a sample pipeline of a process gas chromatograph is characterized by comprising the following steps: the method specifically comprises the following steps:
step 1, switching a full-automatic operation state of a process gas chromatograph into a stop state, so that a quantitative pipe of a sampling valve is communicated with a sample pipeline (7);
step 2, disconnecting the connection of the process sample pipeline and a sample inlet (8) and a sample outlet (9) at two ends of a sample pipeline (7) in the process gas chromatograph;
step 3, connecting the instrument air of 0.4Mpa to a sample inlet (8) of the process gas chromatograph, and blowing the residual sample in a sample pipeline (7) in the process gas chromatograph out from a sample outlet (9);
step 4, disconnecting the connection between the instrument air of 0.4Mpa and a sample inlet (8) of the process gas chromatograph, injecting a certain amount of acetone into the sample inlet (8) of the process gas chromatograph until the acetone flows out from a sample outlet (9) of the process gas chromatograph, and observing whether the acetone flowing out from the sample outlet (9) of the process gas chromatograph is turbid or not;
step 5, standing for 10 minutes after the inner sample pipeline (7) of the process gas chromatograph is filled with acetone, and waiting for the residues in the inner sample pipeline (7) of the process gas chromatograph to be fully dissolved;
step 6, then repeating the steps 4 and 5 until acetone flowing out of a sample outlet (9) of the process gas chromatograph becomes clear;
step 7, connecting the instrument air of 0.4Mpa to a sample inlet (8) of the process gas chromatograph again, and blowing residual acetone in a sample pipeline (7) in the process gas chromatograph out from a sample outlet (9);
and 8, reconnecting the process sample pipeline with the sample inlet (8) and the sample outlet (9) of the process gas chromatograph, and recovering the automatic running state of the process gas chromatograph.
2. A cleaning device applying a cleaning method of a process gas chromatograph sample pipeline is characterized in that: the device comprises a support (1), a blowing assembly (2) used for blowing 0.4Mpa of instrument air into a sample inlet (8) is arranged at the position of the sample inlet (8) close to a process gas chromatograph on the support (1), an injection assembly (3) used for injecting acetone into the sample inlet (8) is further arranged at the position of the sample inlet (8) close to the process gas chromatograph on the support (1), a conversion assembly (4) used for converting the position angle of the blowing assembly (2) and the injection assembly (3) is arranged on the support (1), and a collecting assembly (5) used for collecting impurity gas and impurity liquid in a sample pipeline (7) is arranged at the position of a sample outlet (9) close to the process gas chromatograph on the support (1).
3. The cleaning apparatus of claim 2, wherein the cleaning apparatus comprises: the blowing assembly (2) comprises a gas storage tank (21) filled with instrument air, a deflation valve (22) communicated and arranged at the outlet of the gas storage tank (21) and a blowing pipe (23) communicated and arranged at the outlet of the deflation valve (22), wherein one end, far away from the deflation valve (22), of the blowing pipe (23) is used for being communicated with the sample inlet (8).
4. The cleaning apparatus of claim 3, wherein the cleaning apparatus comprises: annotate liquid subassembly (3) including stock solution bag (31), the intercommunication that is equipped with acetone set up annotate liquid valve (32) in stock solution bag (31) exit and the intercommunication sets up annotate liquid pipe (33) in the exit of annotating liquid valve (32), annotate liquid pipe (33) and keep away from the one end of annotating liquid valve (32) and be used for with sample import (8) intercommunication.
5. The cleaning apparatus of claim 4, wherein the cleaning apparatus comprises: the conversion assembly (4) comprises a conversion sleeve (41) which is coaxially sleeved on the support (1) in a sliding mode, the conversion sleeve (41) is vertically arranged and is horizontally provided with a first conversion rod (42) which is fixedly connected with the air storage tank (21) and right opposite to the peripheral wall of the sample inlet (8), a second conversion rod (43) which is fixedly connected with the liquid storage bag (31) and is horizontally arranged right opposite to the first conversion rod (42) on the peripheral wall of the conversion sleeve (41), a conversion sliding block (44) is fixedly arranged on the peripheral wall of the support (1) and right opposite to the sample inlet (8), a conversion sliding groove group which is used for driving the first conversion rod (42) and the second conversion rod (43) to be in a rotation position is arranged on the inner peripheral wall of the conversion sleeve (41), and the conversion sliding groove group is in sliding connection with the conversion sliding block (44).
6. The cleaning apparatus of claim 5, wherein the cleaning apparatus comprises: the conversion sliding groove group comprises a first conversion groove (411) which is arranged on the inner peripheral wall of the conversion sleeve (41) and is opposite to the first conversion rod (42), a second conversion groove (412) which is arranged on the inner peripheral wall of the conversion sleeve (41) and is opposite to the second conversion rod (43), and a third conversion groove (413) which is arranged on the inner peripheral wall of the conversion sleeve (41) and is communicated with the first conversion groove (411) and the second conversion groove (412), wherein the first conversion groove (411) and the second conversion groove (412) are vertically arranged, the third conversion groove (413) is horizontally arranged and is communicated with the bottoms of the first conversion groove (411) and the second conversion groove (412), and the first conversion groove (411), the second conversion groove (412) and the third conversion groove (413) are all in sliding connection with the conversion sliding block (44).
7. The cleaning apparatus of claim 2, wherein the cleaning apparatus comprises: the collecting assembly (5) comprises a collecting box (51), a collecting pipe (52) arranged on the collecting box (51) in a communicating mode and a collecting fan (53) arranged at the top of the collecting box (51), one end of the collecting pipe (52) is communicated with the top of the collecting box (51), an outlet piece (54) used for being communicated with a sample outlet (9) is arranged at the other end of the collecting pipe (52), a vent hole is further formed in the top of the collecting pipe (52), the collecting fan (53) is located at the vent hole in the top of the collecting box (51), the outlet piece (54) comprises a connector tube (541) in threaded connection with the collecting pipe (52), and a sealing ring (542) used for abutting against the outer peripheral wall of the sample outlet (9) is arranged on the inner peripheral wall of the connector tube 541 (541).
8. The cleaning apparatus of claim 4, wherein the cleaning apparatus comprises: be provided with between gas blow pipe (23), annotate liquid pipe (33) and sample import (8) and be used for making gas blow pipe (23) and annotate liquid pipe (33) and all can dismantle coupling assembling (6) of being connected with sample import (8), coupling assembling (6) are including dismantling connecting sleeve (61) of connecting in sample import (8) department and fixing connector (62) on gas blow pipe (23) and annotate liquid pipe (33) respectively, be provided with on connecting sleeve (61) and can dismantle first joint spare (63) of being connected and can dismantle second joint spare (64) of being connected with connector (62) with sample import (8).
9. The cleaning apparatus of claim 8, wherein the cleaning apparatus comprises: first joint spare (63) include the lower joint group that two sets of levels laid relatively, lower joint group is including smooth lower support tight board (631) that sets up on connecting sleeve (61) internal perisporium of moving and is located and supports tight board (631) top horizontal slip setting down grip block (632) on connecting sleeve (61) internal perisporium down, be provided with down rocking beam (633) along clockwise or anticlockwise pivoted in connecting sleeve (61), the lower extreme of lower rocking beam (633) is articulated mutually with supporting tight board (631) down, the upper end of lower rocking beam (633) is articulated mutually with grip block (632) down, the level is provided with lower reset spring (634) that are used for connecting sleeve (61) and lower rocking beam (633) in connecting sleeve (61).
10. The cleaning apparatus of claim 8, wherein the cleaning apparatus comprises: connector (62) are connecting snap ring (621) of coaxial fixation on gas blow pipe (23) or notes liquid pipe (33), connecting snap ring (621) bottom mounting is vertical connecting slide bar (622) of laying, second joint spare (64) include link block (641) that two levels were laid relatively, offer on the internal perisporium of connecting sleeve (61) and supply link block (641) horizontal slip's last spout, the level is provided with reset spring (642) in connecting sleeve (61), it is located last spout and is used for connecting link sleeve (61) and link block (641) to go up reset spring (642), the up end of connecting sleeve (61) is vertical offers the tight groove of supporting that communicates with last spout, connecting slide bar (622) vertical insertion supports tightly inslot and promotes link block (641) and slides along being close to connecting sleeve (61) axis direction, link block (641) and the perisporium that connecting slide bar (622) offseted are the inclined plane of laminating each other.
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| CN202210074831.8A CN114505287B (en) | 2022-01-21 | 2022-01-21 | Cleaning method and cleaning equipment for sample pipeline of process gas chromatograph |
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| CN202210074831.8A CN114505287B (en) | 2022-01-21 | 2022-01-21 | Cleaning method and cleaning equipment for sample pipeline of process gas chromatograph |
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| CN114505287B (en) | 2024-01-09 |
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