CN114505287B - 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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- CN114505287B CN114505287B CN202210074831.8A CN202210074831A CN114505287B CN 114505287 B CN114505287 B CN 114505287B CN 202210074831 A CN202210074831 A CN 202210074831A CN 114505287 B CN114505287 B CN 114505287B
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- process gas
- gas chromatograph
- pipe
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- 238000000034 method Methods 0.000 title claims abstract description 114
- 230000008569 process Effects 0.000 title claims abstract description 91
- 238000004140 cleaning Methods 0.000 title claims abstract description 55
- 238000006243 chemical reaction Methods 0.000 claims abstract description 145
- 239000007788 liquid Substances 0.000 claims abstract description 96
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000007664 blowing Methods 0.000 claims abstract description 68
- 239000012535 impurity Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims description 57
- 239000007924 injection Substances 0.000 claims description 57
- 230000002093 peripheral effect Effects 0.000 claims description 40
- 230000008676 import Effects 0.000 claims description 36
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000010926 purge Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 73
- 206010037544 Purging Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 244000309464 bull Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007704 transition 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
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010030 laminating 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
- 238000010408 sweeping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to a cleaning equipment of application process gas chromatograph sample pipeline's clearance method relates to equipment cleaning's field, including the support, be provided with on the support and be used for blowing in the subassembly of blowing in 0.4 Mpa's instrument air to the sample inlet, still be provided with on the support and be used for injecting the notes liquid subassembly of acetone to the sample inlet, be provided with on the support and be used for converting the conversion subassembly of the position angle of subassembly of blowing and notes liquid subassembly, be provided with on the support near the sample exit and be used for collecting the collection subassembly of impurity gas and impurity liquid in the sample pipeline. The utility model discloses a make the inside sample pipeline of Cheng Qixiang chromatograph need not to take off from the process gas chromatograph just can wash to the washing degree of difficulty of the inside sample pipeline of chromatograph has also been reduced the washing cost of sample pipeline in the time of having reduced.
Description
Technical Field
The application relates to the field of equipment cleaning, in particular to a cleaning method and cleaning equipment for a sample pipeline of a process gas chromatograph.
Background
The sample pipeline in the process gas chromatograph is polluted by the sample for a plurality of times, and the long-term high-temperature heating ensures that the pollutants are firmly attached to the inner wall of the sample pipeline of the chromatograph. The polluted sample pipeline is easy to generate strange peaks, miscellaneous peaks and the like when being reused, thereby influencing analysis and measurement results, and the quantitative volume of the sample quantitative pipe is possibly changed, so that the sample pipeline needs to be cleaned regularly to ensure the cleanness of a sampling pipeline system in the chromatograph and the accuracy of the quantitative volume of the sample.
The common cleaning method needs to detach the sample pipeline and the sampling valve in the chromatograph and put the chromatograph into an ultrasonic cleaner for cleaning, but the cleaning method has high difficulty and high technical requirements for operators, and also has the risk of expanding pollution to the gas circuit of the chromatographic column system.
Therefore, the current common cleaning method is to replace the whole sample pipeline and sampling valve in the chromatograph, that is to say, the sample pipeline and sampling valve in the chromatograph are used as disposable consumables. However, these consumables are expensive and are more frequently replaced for some samples that are prone to clogging and are therefore not suitable for field use.
Disclosure of Invention
In order to reduce the cleaning difficulty of a sample pipeline in a chromatograph, so that the cleaning cost of the sample pipeline is reduced, the application provides a cleaning method and cleaning equipment of the sample pipeline of a process gas chromatograph.
In a first aspect, the present application provides a method for cleaning a sample pipeline of a process gas chromatograph, which adopts the following technical scheme:
the method for cleaning the sample pipeline of the process gas chromatograph specifically comprises the following steps:
step 1, switching a full-automatic running state of a process gas chromatograph to a stop state so that a metering tube of a sampling valve is communicated with a sample pipeline;
step 2, disconnecting the process sample pipeline from a sample inlet and a sample outlet of a sample pipeline in the process gas chromatograph;
step 3, connecting 0.4Mpa instrument air to a sample inlet of the process gas chromatograph, and purging residual samples in a sample pipeline in the process gas chromatograph from a sample outlet;
step 4, disconnecting the instrument air of 0.4Mpa from 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;
step 5, standing for 10 minutes after the acetone fills the internal sample pipeline of the process gas chromatograph, and fully dissolving residues in the internal sample pipeline of the process gas chromatograph;
step 6, repeating the steps 4 and 5 until the acetone flowing out of the sample outlet of the process gas chromatograph becomes clear;
step 7, connecting the instrument air of 0.4Mpa to the sample inlet of the process gas chromatograph again, and purging residual acetone in a sample pipeline in the process gas chromatograph from the sample outlet;
and 8, reconnecting the process sample pipeline with a sample inlet and a sample outlet of the process gas chromatograph, and recovering the automatic operation 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 the process gas chromatograph, has avoided the sample pipeline to install the step on the process gas chromatograph again after the clearance, and makes the sample pipeline can multiple cycle use to the washing cost of sample pipeline has also been reduced when having reduced the inside sample pipeline's of chromatograph washing degree of difficulty.
In a second aspect, the present application provides a cleaning apparatus for a cleaning method for a sample line of a process gas chromatograph, which adopts the following technical scheme:
the utility model provides a cleaning equipment of application process gas chromatograph sample pipeline's cleaning method, including the support, be provided with the subassembly of blowing that is used for blowing in 0.4 Mpa's instrument air to the sample import near process gas chromatograph's sample import department on the support, be provided with the notes liquid subassembly that is used for injecting acetone to the sample import near process gas chromatograph's sample import department on the support, be provided with the conversion subassembly that is used for converting the position angle of subassembly and notes liquid subassembly on the support, be provided with the collection subassembly that is used for collecting impurity gas and impurity liquid in the sample pipeline near process gas chromatograph's the sample export department on the support.
Through adopting above-mentioned technical scheme, when cleaning equipment washs the inside sample pipeline of process gas chromatograph, thereby blow through the inside of blowing subassembly and sample export's intercommunication to sample pipeline, thereby inject acetone to the inside of sample pipeline through injection subassembly and sample export intercommunication, thereby collect impurity gas and impurity liquid in the sample pipeline through collection subassembly and sample export connection, thereby reduce impurity gas and impurity liquid and external contact and cause the risk of harm to external environment, thereby the inside sample pipeline of Cheng Qixiang chromatograph need not to take off from the process gas chromatograph just can wash, thereby also reduced the cleaning cost of sample pipeline when having reduced the cleaning degree of difficulty of the inside sample pipeline of chromatograph.
Preferably, the air blowing assembly comprises an air storage tank filled with instrument air, an air release valve arranged at the outlet of the air storage tank in a communicating manner and an air blowing pipe arranged at the outlet of the air release valve in a communicating manner, and one end of the air blowing pipe, which is far away from the air release 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 the gas-blowing pipe with the sample import, secondly open the bleed valve, instrument air flows out the gas holder and flows to the sample import in the bleed valve, because on one side the air has certain pressure, therefore the instrument air of outflow has certain speed, can sweep out the impurity in the sample pipeline to realize the impurity of the subassembly of blowing and sweep the effect, the impurity of sweeping out removes to the sample exit and gets into in the collection subassembly.
Preferably, the liquid injection assembly comprises a liquid storage bag filled with acetone, a liquid injection valve arranged at the outlet of the liquid storage bag in a communicating manner, and a liquid injection pipe arranged at the outlet of the liquid injection valve in a communicating manner, wherein one end of the liquid injection pipe, far away from the liquid injection valve, is used for being communicated with a sample inlet.
Through adopting above-mentioned technical scheme, when annotating liquid subassembly and injecting acetone in to the sample pipeline, at first with annotating liquid pipe and sample import intercommunication, secondly open annotate liquid valve and make acetone flow into the sample pipeline through annotating liquid pipe and sample import in, until acetone flows from the sample exit for acetone is full of whole sample pipeline, so that acetone dissolves the impurity of remaining inside the sample pipeline and clears away.
Preferably, the conversion assembly comprises a conversion sleeve coaxially sleeved on the support in a sliding manner, a first conversion rod used for being fixedly connected with the air storage tank is horizontally arranged on the outer peripheral wall of the conversion sleeve, which is vertically arranged and is opposite to the sample inlet, a second conversion rod used for being fixedly connected with the liquid storage bag is horizontally arranged on the outer peripheral wall of the conversion sleeve, which is opposite to the first conversion rod, a conversion sliding block is fixedly arranged on the peripheral wall of the support, which is opposite to the sample inlet, and a conversion sliding groove group used for driving the first conversion rod and the second conversion rod to change positions is arranged on the inner peripheral wall of the conversion sleeve, and the conversion sliding groove group is in sliding connection with the conversion sliding block.
Through adopting above-mentioned technical scheme, when the subassembly of blowing need change the position of subassembly and injection subassembly of blowing after blowing to the sample pipeline for injection subassembly is close to the sample export so with sample exit linkage, slides in the conversion spout group through the conversion slider, thereby leads the slip position of conversion slider, through vertical slip and coaxial rotation on the support of conversion sleeve, thereby makes the conversion slider slide in the conversion spout group, thereby adjusts injection subassembly and the position of blowing subassembly.
Preferably, the conversion chute group comprises a first conversion groove formed in the position, opposite to the first conversion rod, of the inner peripheral wall of the conversion sleeve, a second conversion groove formed in the position, opposite to the second conversion rod, of the inner peripheral wall of the conversion sleeve, and a third conversion groove formed in the inner peripheral wall of the conversion sleeve and communicated with the first conversion groove and the second conversion groove, the first conversion groove and the second conversion groove are vertically distributed, the third conversion groove is horizontally distributed and communicated with the bottoms of the first conversion groove and the second conversion groove, and the first conversion groove, the second conversion groove and the third conversion groove are all in sliding connection with the conversion sliding block.
Through adopting above-mentioned technical scheme, when annotating liquid subassembly and moving to the position department that is close to the sample import, at first vertical upwards lift conversion sleeve for conversion slider is relative first conversion groove vertical downward slip in first conversion groove, until conversion slider is located the third conversion inslot, afterwards coaxial rotation conversion sleeve, make conversion slider follow the direction that is close to the second conversion groove in the third conversion inslot and slide, until conversion slider is located the bottom of second conversion groove, last vertical downward movement conversion sleeve, make conversion slider relative second conversion groove vertical upward slip in the second conversion groove, until conversion slider is inconsistent with the top of second conversion spout, the position adjustment of injection subassembly is to being close to sample import department this moment, thereby realize injection subassembly and the position conversion of gas blowing subassembly.
Preferably, the collection assembly comprises a collection box, a collection pipe and a collection fan, wherein the collection pipe is communicated with the collection box, the collection pipe is arranged on the collection box, the collection fan is arranged at the top of the collection box, one end of the collection pipe is communicated with the top of the collection box, an outlet piece which is communicated with a sample outlet is arranged at the other end of the collection pipe, a vent is further formed in the top of the collection pipe, the collection fan is located at the vent of the top of the collection box, the outlet piece comprises a connector pipe in threaded connection with the collection pipe, and a sealing ring which is used for propping against the peripheral wall of the sample outlet is arranged on the inner peripheral wall of the connector pipe.
Through adopting above-mentioned technical scheme, when collecting the inside impurity gas of subassembly to the sample and impurity liquid collect, insert the sample export with the collecting pipe at first, rotatory interface pipe afterwards for the interface pipe cover is established in sample exit and sealing ring supports the periphery wall of tight sample exit, thereby strengthens the leakproofness of collecting pipe and sample exit, secondly opens the collection fan, collects the air in the fan extraction collecting box, because the reason of pressure, impurity liquid or impurity gas in the sample pipeline can be through sample exit and collecting pipe to the collecting box in remove, thereby realize collecting the effect that the subassembly was collected impurity liquid and impurity gas.
Preferably, be provided with the coupling assembling that is used for making gas-blowing pipe and notes liquid pipe all can dismantle with the sample import between gas-blowing pipe, notes liquid pipe and the sample import, coupling assembling is including dismantling the connecting sleeve of connection in sample import department and fixing the connector on gas-blowing pipe and notes liquid pipe, is provided with on the connecting sleeve and can dismantle the first joint spare of being connected with the sample import and can dismantle the second joint spare of being connected with the connector.
Through adopting above-mentioned technical scheme, coupling assembling can improve the connection stability of gas-blowing pipe, notes liquid pipe and sample import, can dismantle the connection with the sample import through first joint spare with the connecting sleeve, thereby realize the connection of dismantling of connecting sleeve and gas-blowing pipe or notes liquid pipe through the joint of second joint spare and connector to the repeated change of gas-blowing 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 structural flexibility of gas-blowing pipe, notes liquid pipe and sample import.
Preferably, the first clamping piece comprises two groups of lower clamping groups which are horizontally and oppositely distributed, the lower clamping groups comprise lower supporting plates which are horizontally arranged on the connecting sleeve in a sliding mode and lower clamping plates which are horizontally arranged on the connecting sleeve in a sliding mode and are located above the lower supporting plates, lower rotating rods which rotate clockwise or anticlockwise are arranged in the connecting sleeve, the lower ends of the lower rotating rods are hinged to the lower supporting plates, the upper ends of the lower rotating rods are hinged to the lower clamping plates, and lower reset springs used for connecting the connecting sleeve and the lower rotating rods are horizontally arranged in the connecting sleeve.
Through adopting above-mentioned technical scheme, when the vertical coaxial slip cap of connecting sleeve is established on the sample import, support the conflict of tight board and sample import through down, thereby push down and support tight board along keeping away from connecting sleeve's axis direction horizontal slip on the connecting sleeve, thereby support tight board down and rotate through promoting down the bull stick and drive down the grip block along being close to connecting sleeve's axis direction horizontal slip on the connecting sleeve until with the outer perisporium of sample import support tightly, reset spring shrink down this moment, connecting sleeve stops vertical downward movement, thereby realize the joint of connecting sleeve and sample import, when connecting sleeve vertical upwards slides coaxially and keeps away from the sample import, support down and keep away from mutually of tight board and sample import, thereby lower reset spring stretches and drives down the grip block and remove along keeping away from connecting sleeve's axis direction when rotating down the bull stick, thereby realize the detachable connection of connecting sleeve and sample import.
Preferably, the connector is the connection snap ring of coaxial fixation on the gas-blowing pipe or annotate the liquid pipe, the connection slide bar of connecting the vertical layout of snap ring bottom mounting, the second joint spare includes the connection slider that two levels were laid relatively, set up the last spout that supplies connection slider horizontal slip on the interior perisporium of connecting the sleeve, the level is provided with reset spring in the adapter sleeve, go up reset spring and be used for connecting sleeve and connection slider in last spout, the tight groove of support with last spout intercommunication has been vertically seted up to the up end of connecting sleeve for supply the vertical slip of connection slide bar to insert to support tightly the inslot and support tightly promote the connection slider and slide along being close to the connecting sleeve axis direction, the connecting slider is the inclined plane of laminating each other with the perisporium that connects the slide bar and contradict.
Through adopting above-mentioned technical scheme, when the vertical coaxial slip of gas-blowing pipe or notes liquid pipe inserts the sample import, connect the slide bar vertical slip and insert and support tight groove, thereby connect the slide bar and support each other tightly and follow and connect the slide bar and continue to move down and promote and connect the slide bar along being close to connecting sleeve's axis direction horizontal slip, go up reset spring and extend, until the connecting slide bar supports the peripheral wall of tight gas-blowing pipe or notes liquid pipe, thereby realize the joint of gas-blowing pipe or notes liquid pipe and connecting sleeve, when gas-blowing pipe or notes liquid pipe vertical coaxial slip break away from the sample import, connect the slide bar and keep away from the connecting slide bar, thereby go up reset spring and retract and drive and connect the slide bar and keep away from gas-blowing pipe or notes liquid pipe along the direction level of keeping away from the axis, thereby realize gas-blowing pipe or notes liquid pipe and connecting sleeve's detachable connection.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the inside of the sample pipeline is blown through the blowing component, acetone is injected into the inside of the sample pipeline through the injection component, and impurity gas and impurity liquid in the sample pipeline are collected through the collecting component, so that the sample pipeline in the Cheng Qixiang chromatograph can be cleaned without being taken down from the process gas chromatograph, and the cleaning difficulty of the sample pipeline in the chromatograph is reduced, and meanwhile, the cleaning cost of the sample pipeline is also reduced;
2. the sliding position of the conversion sliding block is guided by sliding the conversion sliding block in the conversion sliding groove group, so that the rotation angle of the conversion sleeve is adjusted, and the positions of the injection assembly and the blowing assembly are adjusted;
3. the connecting sleeve is detachably connected with the sample inlet through the first clamping piece, and the connecting sleeve and the air blowing pipe or the liquid injection pipe are detachably connected through the clamping of the second clamping piece and the connector, so that the air blowing pipe and the liquid injection pipe at the sample inlet can be repeatedly replaced, the shape of the sample inlet is not influenced, the structural integrity of the sample inlet is further maintained, and the structural flexibility of the air blowing pipe, the liquid injection pipe and the sample inlet is improved.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a cleaning apparatus according to an embodiment of the present application, which uses a cleaning method for a sample line of a process gas chromatograph.
Fig. 2 is a schematic structural diagram of a conversion assembly according to an embodiment of the present application.
Fig. 3 is a schematic structural view of a connection assembly according to an embodiment of the present application.
Fig. 4 is a schematic structural view of the outlet member in the embodiment at the time of this application.
In the figure: 1. a bracket; 2. an air blowing assembly; 21. a gas storage tank; 22. a bleed 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 assembly; 41. a transition sleeve; 411. a first conversion tank; 412. a second switching groove; 413. a third transition tank; 42. a first transfer lever; 43. a second switch lever; 44. a conversion slider; 5. a collection assembly; 51. a collection box; 52. a collection pipe; 53. collecting a fan; 54. an outlet member; 541. an interface tube; 542. a seal ring; 6. a connection assembly; 61. a connecting sleeve; 62. a connector; 621. connecting a clamping ring; 622. connecting a slide bar; 63. a first clamping piece; 631. a lower abutting plate; 632. a lower clamping plate; 633. a lower rotating rod; 634. a lower return spring; 64. a second clamping piece; 641. the connecting slide block; 642. an upper return spring; 7. a sample line; 8. a sample inlet; 9. and a sample outlet.
Detailed Description
The present application is described in further detail below in conjunction with 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 the full-automatic running state of a process gas chromatograph to a stop state, so that a quantitative pipe of a sampling valve is communicated with a sample pipeline 7 to avoid switching the quantitative pipe to a carrier gas column system loop;
step 2, disconnecting the process sample pipeline from 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 instrument air of 0.4Mpa to a sample inlet 8 of the process gas chromatograph, and purging residual samples in a sample pipeline 7 in the process gas chromatograph from a sample outlet 9 so as to perform primary purging and cleaning on the pipeline;
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;
step 5, standing for 10 minutes after the acetone fills the internal sample pipeline 7 of the process gas chromatograph, and waiting for the residues in the internal sample pipeline 7 of the process gas chromatograph to be fully dissolved;
step 6, repeating the steps 4 and 5 until the acetone flowing out of the sample outlet 9 of the process gas chromatograph becomes clear;
step 7, connecting 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 from a sample outlet 9;
and 8, reconnecting the process sample pipeline with a sample inlet 8 and a sample outlet 9 of the process gas chromatograph, and recovering the automatic operation 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 bracket 1, an air blowing assembly 2, a liquid injection assembly 3, a conversion assembly 4, a collection assembly 5, and a connection assembly 6. A sample pipeline 7 is arranged in the process gas chromatograph, a sample inlet 8 and a sample outlet 9 are arranged at the top of the process gas chromatograph, one end of the sample pipeline 7 is fixedly communicated with the sample inlet 8, and the other end of the sample pipeline 7 is fixedly communicated with the sample outlet 9 so as to facilitate the introduction of sample gas from the outside.
Wherein the bracket 1 is placed on the ground and is close to the process gas chromatograph, and the blowing component 2 is arranged on the bracket 1 and is positioned close to the sample inlet 8, so that instrument air of 0.4Mpa can be blown into the sample inlet 8 conveniently. The liquid injection assembly 3 is arranged on the bracket 1 and is positioned near the sample inlet 8, so that acetone can be conveniently injected into the sample inlet 8. Because annotate liquid subassembly 3 and the subassembly 2 that blows all are located on support 1 and are close to sample import 8 department, be provided with conversion component 4 near sample import 8 department at support 1, annotate liquid subassembly 3 and the subassembly 2 that blows all are connected with conversion component 4, adjust the position of annotating liquid subassembly 3 and subassembly 2 that blows through conversion component 4 to annotate liquid subassembly 3 and subassembly 2 that blows all are connected with sample import 8.
In addition, the connecting component 6 is positioned among the liquid injection component 3, the air blowing component 2 and the sample inlet 8, so that the liquid injection component 3 and the air blowing component 2 are detachably connected with the sample inlet 8, and air is blown into the sample pipeline 7 and acetone is injected into the sample pipeline 7. The collection assembly 5 is arranged on the support 1 near the sample outlet 9 and is communicated with the sample outlet 9 so as to collect the impurity gas and the impurity liquid in the sample pipeline 7, so that the risk that the impurity gas and the impurity liquid are in contact with the outside and damage to the outside environment is reduced.
In the whole process of cleaning the sample pipeline 7 by the cleaning equipment, the sample pipeline 7 inside the process gas chromatograph does not need to be taken down from the process gas chromatograph, so that the cleaning difficulty of the sample pipeline 7 inside the chromatograph is reduced, and the cleaning cost of the sample pipeline 7 is reduced.
Referring to fig. 1, the air blowing assembly 2 comprises an air storage tank 21, an air release valve 22 and an air blowing pipe 23, instrument air with certain pressure is filled in the air storage tank 21, the inlet end of the air release valve 22 is fixedly communicated with the opening of the air storage tank 21, one end of the air blowing pipe 23 is fixedly communicated with the outlet end of the air release valve 22, the other end of the air blowing pipe 23 is detachably communicated with the sample inlet 8, and the air blowing pipe 23 is a hose so as to facilitate manual driving of the air blowing pipe 23 to vertically slide and insert or be far away from the sample inlet 8. The air release valve 22 is opened, and instrument air with 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 from the sample outlet 9 to the collecting assembly 5 for collection.
Referring to fig. 1, the injection assembly includes a reservoir 31, a fill valve 32, and a fill tube 33. The liquid storage bag 31 is filled with a certain amount of acetone liquid, the inlet end of the liquid injection valve 32 is fixedly communicated with the outlet of the liquid storage bag 31, one end of the liquid injection pipe 33 is fixedly communicated with the outlet end of the liquid injection valve 32, the other end of the liquid injection pipe 33 is detachably connected with the sample inlet 8, and the liquid injection pipe 33 is a hose so as to facilitate manual driving of the liquid injection pipe 33 to vertically slide and insert or be far away from the sample inlet 8. Opening the injection valve 32 allows acetone to flow into the sample line 7 through the injection tube 33, thereby dissolving and removing residual impurities on the wall of the sample line 7.
Referring to fig. 1 and 2, the switch assembly 4 includes a switch sleeve 41, a first switch lever 42, a second switch lever 43, and a switch slider 44.
Wherein the conversion sleeve 41 is coaxially and slidably sleeved on the bracket 1 along the vertical direction, the first conversion rod 42 is horizontally arranged, one end of the first conversion rod 42 is fixed on the circumferential 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 43 is fixed on the circumferential 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 sliding block 44 is fixed at the position of the bracket 1, which is opposite to the peripheral wall of the sample inlet 8, the inner peripheral wall of the conversion sleeve 41 is provided with a conversion sliding groove group which is in sliding connection with the conversion sliding block 44, and the movement direction of the conversion sleeve 41 is guided by the sliding connection of the conversion sliding groove group and the conversion sliding block 44, so that 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 slot 411 is vertically arranged on the inner peripheral wall of the conversion sleeve 41 and is opposite to the first conversion rod 42, the second conversion slot 412 is vertically arranged on the inner peripheral wall of the conversion sleeve 41 and is opposite to the second conversion rod 43, the second conversion slot 412 and the first conversion slot 411 are horizontally and oppositely arranged, the third conversion slot 413 is arranged on the inner peripheral wall of the conversion sleeve 41 and is positioned between the first conversion slot 411 and the second conversion slot 412, and the third conversion slot 413 is horizontally arranged and is communicated with bottoms of the first conversion slot 411 and the second conversion slot 412. The switch slider 44 is slidable in the first switch slot 411, the second switch slot 412, and the third switch slot 413.
When the first switching lever 42 is located at a position facing the sample outlet 9, the switching slider 44 slides within the first switching slot 411 and is located at the top of the first switching slot 411, thereby defining the position of the first switching lever 42; when the second switching lever 43 is adjusted to be positioned at a position facing the sample outlet 9, the switching sleeve 41 is firstly moved vertically upward until the switching slider 44 is positioned 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 direction approaching the second switching groove 412 in the third switching groove 413 until the switching slider 44 is positioned 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 positioned at the top of the second switching groove 412, thereby achieving the effect of switching 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 clamping piece 63, and a second clamping piece 64. The connecting sleeve 61 is coaxially and slidably sleeved on the sample inlet 8, and the two connectors 62 are respectively arranged at one ends of the air blowing pipe 23 and the liquid injection pipe 33, which are close to the sample inlet 8. The connector 62 comprises a connecting clamping ring 621 coaxially and fixedly sleeved on the air blowing pipe 23 or the liquid injection pipe 33, and a connecting sliding rod 622 is vertically and fixedly arranged at the bottom end of the connecting clamping ring 621. The first clamping piece 63 is located on the connecting sleeve 61 and enables the connecting sleeve 61 to be detachably connected with the sample inlet 8, the second clamping piece 64 is located on the connecting sleeve 61 and located above the first clamping piece 63, and the second clamping piece 64 enables the connecting sleeve 61 to be detachably clamped with the air blowing pipe 23 or the liquid injection pipe 33.
The first clamping member 63 includes two sets of lower clamping sets horizontally and oppositely arranged. The lower clamping set includes a lower clamping plate 631, a lower clamping plate 632, a lower rotating rod 633 and a lower return spring 634. The lower abutment plate 631 is provided on the inner peripheral wall of the connection sleeve 61 so as to slide horizontally in a direction approaching or separating from the axis, and the lower abutment plate 631 is a sloping plate which is vertically downward and inclined in a direction toward the connection sleeve 61. The lower clamp plate 632 is located above the lower abutment plate 631, and is horizontally slidably disposed on the inner peripheral wall of the connecting sleeve 61 in a direction approaching or separating from the axis, and the end surface of the lower clamp plate 632 approaching the axis is a cambered surface which is 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 in a clockwise or anticlockwise 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 has one end fixed to the lower end of the lower rotating lever 633, and the other end of the lower return spring 634 is fixed to the connection sleeve 61.
When the connecting sleeve 61 is vertically and downwards sleeved on the sample inlet 8 in a sliding mode, the lower abutting plate 631 abuts against the outer peripheral wall of the sample inlet 8, the lower abutting plate 631 slides along the axial direction away from the connecting sleeve 61, the lower abutting plate 631 drives the lower clamping plate 632 to slide along the axial direction close to the connecting sleeve 61 when the lower return spring 634 contracts by pushing the lower rotating rod 633 to rotate, and the lower clamping plate 632 abuts against the outer peripheral wall of the sample inlet 8 until the lower clamping plate 632 abuts against the outer peripheral wall of the sample inlet 8, so that the detachable clamping connection of the connecting sleeve 61 and the sample inlet 8 is achieved, the shape of the sample inlet 8 is not influenced, and the structural integrity of the sample inlet 8 is further maintained.
The second locking member 64 further includes two connecting sliders 641 disposed horizontally opposite to each other and two upper return springs 642 disposed horizontally opposite to each other. An upper chute which is in sliding connection with the connecting slide block 641 is horizontally arranged on the inner peripheral wall of the connecting sleeve 61, the connecting slide block 641 horizontally slides along the direction close to or far away from the axis, and the opposite end surfaces of the two connecting slide blocks 641 are cambered surfaces which are jointed with the outer peripheral wall of the air blowing pipe 23 or the liquid injection pipe 33. One end of the upper return spring 642 positioned in the upper chute is fixed with the end surface of the connecting slider 641 facing away from each other, and the other end of the upper return spring 642 is fixed on the connecting sleeve 61. The upper end surface of the connecting sleeve 61 is vertically provided with a propping groove for the vertical sliding insertion of the connecting slide bar 622, and the propping groove is communicated with the upper slide groove.
Therefore, during the process of sliding and inserting the connection slide bar 622 into the abutting groove, the connection slide bar 622 can abut against the connection slide block 641 and push the connection slide block 641 to slide along the axial direction close to the connection sleeve 61 until the connection slide block 641 abuts against the peripheral wall of the air blowing pipe 23 or the liquid injection pipe 33, so that the connection 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, and the collecting fan 53 is horizontally arranged and arranged at the vent of the collecting box 51. By turning on the collecting fan 53, the gas in the collecting box 51 is driven to flow outwards, and the impurity gas and impurity liquid in the sample pipeline 7 are driven to flow into the collecting box 51 for collecting due to the pressure.
In addition, an end of the collecting pipe 52, which is communicated with the sample outlet 9, is provided with an outlet piece 54 which is detachably connected with the sample outlet 9, the outlet piece 54 comprises a connector pipe 541 and a sealing ring 542, the connector pipe 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 at the position, close to the sample outlet 9, of the inner peripheral wall of the connector pipe 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, and then the connector pipe 541 is rotated to enable the connector pipe 541 to move along 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, so that the detachable communication between the collecting pipe 52 and the sample outlet 9 is realized.
The implementation principle of the cleaning equipment applying the cleaning method of the sample pipeline of the process gas chromatograph in the embodiment of the application is as follows: firstly, the collecting pipe 52 is inserted into the sample outlet 9 in a sliding manner, the collecting pipe 52 is detachably connected with the sample outlet 9 through the outlet piece 54, secondly, the air blowing pipe 23 is inserted into the sample inlet 8 in a sliding manner, the collecting fan 53 and the sample inlet 8 are detachably clamped, the air release valve 22 is opened to enable instrument air to be blown into the sample pipeline 7, meanwhile, the collecting fan 53 is opened, residual impurities in the sample pipeline 7 are removed, then the air release valve 22 is closed, the injection assembly is close to the sample outlet 9 through the conversion assembly 4, furthermore, the liquid injection pipe 33 is inserted into the sample inlet 8 in a sliding manner, the connecting assembly 6 and the sample inlet 8 are detachably clamped, 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, standing is carried out, then the collecting fan 53 and the liquid injection valve 32 are opened again, acetone in the sample pipeline 7 is replaced, the operation is repeated for several times until the acetone in the clean collecting box 51, finally, the air blowing assembly 2 is close to the sample outlet 9 through the conversion assembly 4, the air pipe 23 is inserted into the sample inlet 8 in a sliding manner, the air release valve 22 is closed, acetone injection assembly 33 is closed, the acetone injection pipe 33 is connected to the sample inlet 7 is connected with the sample inlet 8, the acetone injection pipe 7 is opened, the acetone injection pipe 7 is blown into the sample pipeline 7, and finally, the cost of the sample is reduced, the cleaning cost of the sample in the sample is reduced, and the sample is finally, the cost is reduced, and the sample in the sample is washed.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. A method for cleaning a sample pipeline of a process gas chromatograph is characterized by comprising the following steps of: the method specifically comprises the following steps:
step 1, switching the full-automatic running state of a process gas chromatograph to a stop state so that a metering tube of a sampling valve is communicated with a sample pipeline (7);
step 2, disconnecting a process sample pipeline from 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 instrument air of 0.4Mpa to a sample inlet (8) of the process gas chromatograph, and purging residual samples in a sample pipeline (7) in the process gas chromatograph from a sample outlet (9);
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 5, standing for 10 minutes after the acetone fills the internal sample pipeline (7) of the process gas chromatograph, and fully dissolving residues in the internal sample pipeline (7) of the process gas chromatograph;
step 6, repeating the steps 4 and 5 until the acetone flowing out of the sample outlet (9) of the process gas chromatograph becomes clear;
step 7, connecting 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 from a sample outlet (9);
and 8, reconnecting the process sample pipeline with a sample inlet (8) and a sample outlet (9) of the process gas chromatograph, and recovering the automatic operation state of the process gas chromatograph.
2. A cleaning apparatus for cleaning a sample line of a process gas chromatograph according to claim 1, wherein: the device comprises a support (1), wherein a sample inlet (8) of the support (1) close to a process gas chromatograph is provided with a blowing component (2) for blowing instrument air of 0.4Mpa into the sample inlet (8), a liquid injection component (3) for injecting acetone into the sample inlet (8) is also arranged at the sample inlet (8) of the support (1), the support (1) is provided with a conversion component (4) for converting the position angles of the blowing component (2) and the liquid injection component (3), and a collecting component (5) for collecting impurity gas and impurity liquid in a sample pipeline (7) is arranged at a sample outlet (9) of the support (1) close to the process gas chromatograph;
the air blowing assembly (2) comprises an air storage tank (21) filled with instrument air, an air release valve (22) arranged at the outlet of the air storage tank (21) in a communicating manner and an air blowing pipe (23) arranged at the outlet of the air release valve (22) in a communicating manner, and one end, far away from the air release valve (22), of the air blowing pipe (23) is used for being communicated with the sample inlet (8);
the liquid injection assembly (3) comprises a liquid storage bag (31) filled with acetone, a liquid injection valve (32) arranged at the outlet of the liquid storage bag (31) in a communicating manner, and a liquid injection pipe (33) arranged at the outlet of the liquid injection valve (32) in a communicating manner, wherein one end, far away from the liquid injection valve (32), of the liquid injection pipe (33) is used for being communicated with the sample inlet (8);
the conversion assembly (4) comprises a conversion sleeve (41) which is coaxially sleeved on the support (1) in a sliding mode, a first conversion rod (42) which is used for being fixedly connected with the air storage tank (21) is horizontally arranged on the outer peripheral wall of the conversion sleeve (41) and is right opposite to the sample inlet (8), a second conversion rod (43) which is used for being fixedly connected with the liquid storage bag (31) is horizontally arranged on the outer peripheral wall of the conversion sleeve (41) and is right opposite to the first conversion rod (42), 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 change positions 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).
3. The cleaning apparatus for use in a process gas chromatograph sample line cleaning method of claim 2, wherein: the switching spout group is including seting up first conversion groove (411) just to first conversion pole (42) department at conversion sleeve (41) inner peripheral wall, seting up second conversion groove (412) just to second conversion pole (43) department at conversion sleeve (41) inner peripheral wall and seting up third conversion groove (413) of intercommunication first conversion groove (411) and second conversion groove (412) on conversion sleeve (41) inner peripheral wall, first conversion groove (411) and second conversion groove (412) are vertically laid, third conversion groove (413) are laid and are communicated with the bottom of first conversion groove (411) and second conversion groove (412), first conversion groove (411), second conversion groove (412) and third conversion groove (413) all with conversion slider (44) sliding connection.
4. The cleaning apparatus for use in a process gas chromatograph sample line cleaning method of claim 2, wherein: 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 is further formed in the top of the collecting pipe (52), the collecting fan (53) is located at the vent of the top of the collecting box (51), the outlet piece (54) comprises an interface pipe (541) in threaded connection with the collecting pipe (52), and a sealing ring (542) used for propping against the peripheral wall of the sample outlet (9) is arranged on the inner peripheral wall of the interface pipe (541).
5. The cleaning apparatus for use in a process gas chromatograph sample line cleaning method of claim 2, wherein: be provided with between gas-blowing pipe (23), notes liquid pipe (33) and sample import (8) and be used for making gas-blowing pipe (23) and notes liquid pipe (33) all with sample import (8) can dismantle coupling assembling (6), coupling assembling (6) are including dismantling coupling sleeve (61) of connection in sample import (8) department and fix connector (62) on gas-blowing pipe (23) and notes liquid pipe (33) respectively, are provided with first joint spare (63) and second joint spare (64) of dismantling connection with connector (62) with sample import (8) on coupling sleeve (61).
6. The cleaning apparatus for performing a process gas chromatograph sample line cleaning method as set forth in claim 5, wherein: the first clamping piece (63) comprises two groups of lower clamping groups which are horizontally and oppositely arranged, the lower clamping groups comprise lower supporting and fastening plates (631) which are horizontally and slidingly arranged on the inner peripheral wall of the connecting sleeve (61) and lower clamping plates (632) which are horizontally and slidingly arranged on the inner peripheral wall of the connecting sleeve (61) above the lower supporting and fastening plates (631), a lower rotating rod (633) which rotates clockwise or anticlockwise is arranged in the connecting sleeve (61), the lower end of the lower rotating rod (633) is hinged with the lower supporting and fastening plates (631), the upper end of the lower rotating rod (633) is hinged with the lower clamping plates (632), and a lower reset spring (634) which is used for connecting the connecting sleeve (61) and the lower rotating rod (633) is horizontally arranged in the connecting sleeve (61).
7. The cleaning apparatus for performing a process gas chromatograph sample line cleaning method as set forth in claim 5, wherein: the connector (62) is a connecting clamping ring (621) coaxially fixed on the air blowing pipe (23) or the liquid injection pipe (33), a connecting sliding rod (622) vertically arranged at the bottom end of the connecting clamping ring (621) is fixedly connected, the second clamping piece (64) comprises two connecting sliding blocks (641) horizontally oppositely arranged, an upper sliding groove for horizontally sliding the connecting sliding blocks (641) is formed in the inner peripheral wall of the connecting sleeve (61), an upper reset spring (642) is horizontally arranged in the connecting sleeve (61), the upper reset spring (642) is located in the upper sliding groove and is used for connecting the connecting sleeve (61) and the connecting sliding blocks (641), a tight supporting groove communicated with the upper sliding groove is vertically formed in the upper end face of the connecting sleeve (61), the connecting sliding rod (622) is vertically inserted into the tight supporting groove and pushes the connecting sliding blocks (641) to slide along the axis direction close to the connecting sleeve (61), and the peripheral walls of the abutting connecting sliding blocks (641) are mutually attached inclined planes.
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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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| CN114505287A (en) | 2022-05-17 |
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