CN110397775A - A kind of anti-internal layer adherency duplex unlatching sampling valve of chemical field - Google Patents
A kind of anti-internal layer adherency duplex unlatching sampling valve of chemical field Download PDFInfo
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- CN110397775A CN110397775A CN201910715994.8A CN201910715994A CN110397775A CN 110397775 A CN110397775 A CN 110397775A CN 201910715994 A CN201910715994 A CN 201910715994A CN 110397775 A CN110397775 A CN 110397775A
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- Prior art keywords
- sampling
- internal layer
- valve
- coating
- duplex
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Classifications
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- 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
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/513—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using plasma jets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
Abstract
The invention discloses a kind of anti-internal layer adherency duplexs of chemical field to open sampling valve, belong to sampling valve field, a kind of anti-internal layer adherency duplex unlatching sampling valve of chemical field, in import valve chamber (a), super anti-adherent coating is coated in outlet valve chamber (b) and sampling vias inner walls, corrosive fluid medium easily slides from this super anti-adherency coating surface, reduce the contact area of corrosive fluid medium and coating, aggregation of the corrosive fluid medium in coating surface is reduced to reduce infiltration of the corrosive fluid medium to coating, realize the inhibiting effect to corrosion, in addition punching press scraping mechanism is equipped at sampling channel, it can continue to be passed through fluid media (medium) after the completion of every sub-sampling, utilize punching press disk built in fluid media impingement, so that the flexible circle that swings of hard cutting edge strikes off a small amount of medium adhered on the tube wall for sampling channel, to improve The medium purity of lower sub-sampling, can will because sample it is impure caused by sample detection error be reduced to it is minimum.
Description
Technical field
The present invention relates to sampling valve fields, take more specifically to a kind of anti-internal layer adherency duplex unlatching of chemical field
Sample valve.
Background technique
Sampling valve refers to the valve for obtaining medium samples in pipeline or equipment, needs many often to medium samples
The occasion for carrying out chemical analysis, will use special sampling valve more and is sampled.Working principle or performance when according to sampling are not
Together, sampling valve is broadly divided into three types, including duplex opening valve, banjo clip plate valve and with the sampling valve of insulation jacket.
And duplex opening valve is a kind of most commonly seen sampling valve, one kind of its also sterile sampling valve, it is sterile to take
Sample valve is ensuring that the sterilization of sampling environment as its name suggests.And duplex opening valve is usually to form there are two the ball valve connected,
So duplex of gaining the name opening valve.The characteristics of duplex opening valve is that sampling is safe and stable.In sampling process, it is first shut off duplex
Close to the A valve of equipment and pipeline in opening valve, B valve is then opened, allows medium to flow into the space between two valves, then
B valve opening A valve is closed, sampling vessel is placed on sample tap and holds sampling medium.
Sampling valve is installed on Extraction medium sample on medium pipeline, and medium is flowed into sampling from sample tap and holds when valve opening
In device, on-line period is realized.The major defect of existing sampling valve is: to high pressure, toxic, the sampling of risk medium process
In, when valve opening, high-pressure medium is easy from pressure tappings sprinkling, sputters and, operator is damaged and environmental pollution,
Operational safety is poor.
To improve the above problem, China Patent Publication No. is that CN205806575U discloses a kind of visual sampling duplex ball
Valve, including valve body, valve body have import valve chamber and outlet valve chamber, have between import valve chamber and outlet valve chamber identical as pipeline
The sampling channel of bore, import valve chamber and the intracavitary sphere of installation respectively of outlet valve constitute inlet ball valve and vent ball valve；Mainly
Visor window is installed above sampling channel, sampling installs sampling valve below channel；Sampling valve is by probe tube, spool, valve rod, hand
Wheel composition, probe tube import are connected to sampling channel lumen, and sample tap is arranged in side in the middle part of probe tube；Spool uses plunger type knot
Structure, plunger periphery and probe tube inner hole wall dynamic sealing cooperate, and plunger lower end is fixedly connected with valve rod upper end, and valve rod lower end is logical
Valve stem nut is crossed to connect with handwheel.Avoid high-pressure medium sprinkling when sampling, splash injury operator and pollution environment, operation peace
It is complete reliable, the sampling suitable for high-pressure medium pipeline.
But the duplex sampling valve and duplex sampling valve in the prior art, internal layer in above-mentioned patent often adhere to
The medium sampled, when every sub-sampling, the medium that valve body internal layer adheres to during preceding primary sample can be mixed into Jie of current sample
In matter, cause to sample impure, increase sample detection error.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of anti-internal layer adherency duplexs of chemical field to open
Sampling valve is opened, it is coated with super anti-adherent coating, corrosive fluid in import valve chamber, outlet valve chamber and sampling vias inner walls
Medium easily slides from this super anti-adherency coating surface, reduces the contact area of corrosive fluid medium and coating, reduces rotten
Corrosion fluid media (medium), to reduce infiltration of the corrosive fluid medium to coating, realizes the suppression to corrosion in the aggregation of coating surface
Production is used, and is in addition equipped with punching press scraping mechanism at sampling channel, using the trickling impact force of fluid media (medium) punching press is scraped
Material mechanism carries out the effect of striking off to the tube wall bur in sampling channel, improves the purity of every sub-sampling, reduces sample detection error.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of anti-internal layer adherency duplex unlatching sampling valve of chemical field, including import valve chamber and outlet valve chamber, the import
It is equipped with sampling channel between valve chamber and outlet valve chamber, is coated in the import valve chamber, outlet valve chamber and sampling vias inner walls
Super anti-adherent coating, the sampling channel lower end are provided with sample tap, and punching press scraping mechanism is equipped at the sampling channel, described
Punching press scraping mechanism includes built-in punching press disk and a pair of of auxiliary displaced block, and a pair of of auxiliary displaced block be symmetrically fixedly connected on it is built-in
Punching press disk side, the tube wall cutting in the sampling channel have a pair of of transverse shift slot, and a pair of auxiliary displaced block is located at
It is slidably connected in a pair of of transverse shift slot and with transverse shift slot, the transverse shift slot is fixed on the side wall of import valve chamber
It is connected with multi stage resilient telescopic rod, the one end of the multi stage resilient telescopic rod far from transverse shift groove sidewall and auxiliary displaced block are solid
Fixed to connect, digging at the built-in punching press plate edge has multiple metering holes, and multiple metering holes are uniformly surrounded on built-in punching press disk
The center of circle on the outside of, import valve chamber, outlet valve chamber and sampling vias inner walls on be coated with super anti-adherent coating, corrosive fluid
Medium easily slides from this super anti-adherency coating surface, reduces the contact area of corrosive fluid medium and coating, reduces rotten
Corrosion fluid media (medium), to reduce infiltration of the corrosive fluid medium to coating, realizes the suppression to corrosion in the aggregation of coating surface
Production is used, and is in addition equipped with punching press scraping mechanism at sampling channel, using the trickling impact force of fluid media (medium) punching press is scraped
Material mechanism carries out the effect of striking off to the tube wall bur in sampling channel, improves the purity of every sub-sampling, reduces sample detection error.
Further, multiple auxiliary conducting rifles are fixedly connected at the tube wall in the sampling channel, and assist conducting rifle position
Between transverse shift slot and outlet valve chamber, multiple auxiliary conducting rifles match with multiple metering holes, and auxiliary conducting rifle is inserted
Enter metering hole to be connected, prevents current limliting hole plug.
Further, the built-in punching press disk is set as concave face close to one end of import valve chamber, and concave face is by throwing
Light processing, medium are stronger to the impact force of concave face, guarantee that fluid media (medium) can be by built-in punching press under lesser flow velocity
Disk is pushed into transverse shift slot the other end.
Further, the built-in punching press disk side is fixedly connected with flexible swing circle, the flexible outer ring for swinging circle
End is hard cutting edge, and hard cutting edge can preferably strike off a small amount of medium adhered on the tube wall for sampling channel.
Further, the auxiliary conducting rifle passes through polishing treatment, the inner wall of the metering hole close to one end of metering hole
Polishing treatment is also passed through, reduces the frictional force during auxiliary conducting rifle insertion metering hole, to be smoothly inserted into metering hole
It is connected, prevents current limliting hole plug.
The coating method of super anti-adherent coating are as follows:
S1, the sampling valve is dismantled, is put into ultrasonic cleaning device, be added in the sodium hydroxide solution of 5wt% and impregnate 30 minutes,
Then ionized water is added using ultrasonic cleaning 3-5min, picks up drying；
S2, the components that the sampling valve is dismantled are placed in the reaction cavity of plasma chamber, reaction cavity are continuously vacuumized,
The intracorporal vacuum degree of reaction chamber is extracted into 10-200 millitorr, is passed through inert gas or nitrogen；
S3, be passed through monomer vapours to vacuum degree be 30-300ml, open plasma discharge, carry out chemical vapor deposition, preparation
Dense coating；
After the completion of S4, dense coating depositions, power and the discharge time of plasma discharge are adjusted, chemical vapor deposition is carried out,
Prepare rough coatings；Prepare that internal layer is dense coating, outer layer is rough coatings on the component surface that the sampling valve is dismantled
Anti-corrosion, super anti-adherent coating；
S5, stop plasma discharge, stopping is passed through monomer vapours, persistently vacuumizes, and holding reaction cavity vacuum degree is 10-
It is passed through atmosphere after 200 millitorr 1-5min to an atmospheric pressure, then takes out the components that the sampling valve is dismantled.
Further, in S3, the power of the plasma discharge is 2-150W, discharge time 600-7200s.
Further, in S4, the power for adjusting plasma discharge is 160-500W, discharge time 60-1000s.
By plasma chemical vapor deposition technique, the deposition rate of monomer can be dismantled in the sampling valve zero is controlled
The fine and close super anti-adherency coating surface with multilevel structure in conjunction with rough coatings is prepared on parts surface, corrosive fluid is situated between
Matter easily slides from this super anti-adherency coating surface, reduces the contact area of corrosive fluid medium and coating, reduces corrosion
Property fluid media (medium) coating surface aggregation to reduce infiltration of the corrosive fluid medium to coating, realize the inhibition to corrosion
Effect.
Further, it is described sampling channel tube wall on rough coatings surface need it is subsequent carry out oxidation ball-milling treatment,
The tube wall coating in sampling channel is frequently contacted with the edge of built-in punching press disk, the pipe in the sampling channel after peroxidating ball-milling treatment
Wall coating surface has certain slickness, is not easy to fall off because of scraping.
Further, the dense coating of the internal layer is red, and the rough coatings of the outer layer are blue, valve inner
Sampler can be entered after super anti-adherency coating shedding with fluid media (medium), operator can immediately recognize the super anti-of valve inner
Adherent coating dropping situations, and the dropping situations of inside and outside coating can be judged according to the coating color to fall off.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) this programme is coated with super anti-adherent coating, active sulfur in import valve chamber, outlet valve chamber and sampling vias inner walls
Body medium easily slides from this super anti-adherency coating surface, reduces the contact area of corrosive fluid medium and coating, reduces
Corrosive fluid medium, to reduce infiltration of the corrosive fluid medium to coating, is realized to corrosion in the aggregation of coating surface
In addition inhibiting effect is equipped with punching press scraping mechanism at sampling channel, makes punching press using the trickling impact force of fluid media (medium)
Scraping mechanism carries out the effect of striking off to the tube wall bur in sampling channel, improves the purity of every sub-sampling, reduces sample detection and misses
Difference.
(2) it samples and is fixedly connected with multiple auxiliary conducting rifles at the tube wall in channel, and assist conducting rifle position in transverse shift
Between slot and outlet valve chamber, multiple auxiliary conducting rifles match with multiple metering holes, and auxiliary conducting rifle insertion metering hole is led
It is logical, prevent current limliting hole plug.
(3) punching press disk built in is set as concave face close to one end of import valve chamber, and concave face passes through polishing treatment, medium
It is stronger to the impact force of concave face, guarantee that built-in punching press disk can be pushed into lateral shifting under lesser flow velocity by fluid media (medium)
Position slot the other end.
(4) punching press disk side built in is fixedly connected with flexible swing circle, and the outer ring end that flexibility swings circle is hard cutting edge,
Hard cutting edge can preferably strike off a small amount of medium adhered on the tube wall for sampling channel.
(5) sample channel tube wall on rough coatings surface need it is subsequent carry out oxidation ball-milling treatment, sample channel
Tube wall coating is frequently contacted with the edge of built-in punching press disk, the tube wall coating surface in the sampling channel after peroxidating ball-milling treatment
With certain slickness, it is not easy to fall off because of scraping.
(6) dense coating of internal layer is red, and the rough coatings of outer layer are blue, and the super anti-adherent coating of valve inner is de-
Backwardness can enter sampler with fluid media (medium), and operator can immediately recognize the super anti-adherency coating shedding feelings of valve inner
Condition, and the dropping situations of inside and outside coating can be judged according to the coating color to fall off.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention is not passed through under fluid media (medium) state；
Fig. 2 is the structural schematic diagram in Fig. 1 at A；
Fig. 3 is the structural schematic diagram in Fig. 1 at B；
Fig. 4 is the structural schematic diagram that the present invention is passed through under fluid media (medium) state；
Fig. 5 is the structural schematic diagram in Fig. 4 at C；
Fig. 6 is the flexible structural schematic diagram swung under round state of punching press disk removal built in the present invention；
Fig. 7 is the flexible structural schematic diagram swung under round state of punching press disk connection built in the present invention.
Figure label explanation:
Punching press disk, 2 auxiliary displaced blocks, 3 metering holes, 4 transverse shift slots, 5 multi stage resilient telescopic rods, 6 auxiliary conducting rifles, 7 built in 1
Flexibility swings circle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
Referring to Fig. 1, a kind of anti-internal layer adherency duplex of chemical field opens sampling valve, it is with China Patent Publication No.
CN205806575U discloses one kind, and visually sampling Two-way flow ball valve is similar, including import valve chamber a and outlet valve chamber b, inlet valve
Chamber a and outlet valve chamber b between be equipped with sampling channel, import valve chamber a, outlet valve chamber b and sampling vias inner walls on be coated with it is super
Anti- adherent coating, sampling channel lower end are provided with sample tap (Q), sample and be equipped with punching press scraping mechanism at channel；
Referring to Fig. 2, punching press scraping mechanism includes built-in punching press disk 1 and a pair of of auxiliary displaced block 2, and a pair assists displaced block 2
Being symmetrically welded the tube wall cutting that channel is sampled in built-in 1 side of punching press disk has a pair of of transverse shift slot 4, a pair of auxiliary displaced block 2
It is located in a pair of of transverse shift slot 4 and is slidably connected with transverse shift slot 4, transverse shift slot 4 is close to the side of import valve chamber a
Multi stage resilient telescopic rod 5, multi stage resilient telescopic rod 5 one end and auxiliary far from 4 side wall of transverse shift slot are fixedly connected on wall
The welding of 2 phase of displaced block；
Fig. 2 and Fig. 7 are please referred to, built-in 1 edge of punching press disk, which is dug, there are multiple metering holes 3, and multiple metering holes 3 are uniformly surrounded on
On the outside of the center of circle of built-in punching press disk 1, when sampling, first closes outlet valve and turn off imported valve and be sampled, high pressure is avoided to be situated between
Matter is splashed, and is coated with super anti-adherent coating on import valve chamber a, outlet valve chamber b and sampling vias inner walls, corrosive fluid is situated between
Matter easily slides from this super anti-adherency coating surface, reduces the contact area of corrosive fluid medium and coating, reduces corrosion
Property fluid media (medium) coating surface aggregation to reduce infiltration of the corrosive fluid medium to coating, realize the inhibition to corrosion
In addition effect is equipped with punching press scraping mechanism at sampling channel, makes punching press scraper using the trickling impact force of fluid media (medium)
Mechanism carries out the effect of striking off to the tube wall bur in sampling channel, improves the purity of every sub-sampling, reduces sample detection error.
Fig. 3 and Fig. 5 are please referred to, samples and is welded with multiple auxiliary conducting rifles 6 at the tube wall in channel, and assist conducting 6, rifle
Between transverse shift slot 4 and outlet valve chamber b, multiple auxiliary conducting rifles 6 match with multiple metering holes 3, and auxiliary conducting rifle 6 is inserted
Enter metering hole 3 to be connected, prevents metering hole 3 from blocking.
Referring to Fig. 6, built-in punching press disk 1 is set as concave face close to one end of import valve chamber a, and concave face is by polishing
Processing, medium is stronger to the impact force of concave face, guarantees that fluid media (medium) can be by built-in punching press disk 1 under lesser flow velocity
It is pushed into 4 the other end of transverse shift slot.
Referring to Fig. 7, flexible swing circle 7 is glued in built-in 1 side of punching press disk, the outer ring end that flexibility swings circle 7 is hard
Matter cutting edge, hard cutting edge can preferably strike off a small amount of medium adhered on the tube wall for sampling channel.
Auxiliary conducting rifle 6 passes through polishing treatment close to one end of metering hole 3, and the inner wall of metering hole 3 also passes through at polishing
Reason reduces the frictional force that auxiliary conducting rifle 6 is inserted into during metering hole 3, is connected, prevents to metering hole 3 to be smoothly inserted into
Only metering hole 3 blocks.
The coating method of super anti-adherent coating are as follows:
S1, the sampling valve is dismantled, is put into ultrasonic cleaning device, be added in the sodium hydroxide solution of 5wt% and impregnate 30 minutes,
Then ionized water is added using ultrasonic cleaning 3-5min, picks up drying；
S2, the components that the sampling valve is dismantled are placed in the reaction cavity of plasma chamber, reaction cavity are continuously vacuumized,
The intracorporal vacuum degree of reaction chamber is extracted into 10-200 millitorr, is passed through inert gas or nitrogen；
S3, be passed through monomer vapours to vacuum degree be 30-300ml, open plasma discharge, carry out chemical vapor deposition, preparation
Dense coating；
After the completion of S4, dense coating depositions, power and the discharge time of plasma discharge are adjusted, chemical vapor deposition is carried out,
Prepare rough coatings；Prepare that internal layer is dense coating, outer layer is rough coatings on the component surface that the sampling valve is dismantled
Anti-corrosion, super anti-adherent coating；
S5, stop plasma discharge, stopping is passed through monomer vapours, persistently vacuumizes, and holding reaction cavity vacuum degree is 10-
It is passed through atmosphere after 200 millitorr 1-5min to an atmospheric pressure, then takes out the components that the sampling valve is dismantled.
In S3, the power of plasma discharge is 2-150W, discharge time 600-7200s.
In S4, the power for adjusting plasma discharge is 160-500W, discharge time 60-1000s.
By plasma chemical vapor deposition technique, the deposition rate of monomer can be dismantled in the sampling valve zero is controlled
The fine and close super anti-adherency coating surface with multilevel structure in conjunction with rough coatings is prepared on parts surface, corrosive fluid is situated between
Matter easily slides from this super anti-adherency coating surface, reduces the contact area of corrosive fluid medium and coating, reduces corrosion
Property fluid media (medium) coating surface aggregation to reduce infiltration of the corrosive fluid medium to coating, realize the inhibition to corrosion
Effect.
The coating method of super anti-adherent coating is that one kind disclosed in CN107058981B is low based on China Patent Publication No.
It adheres to, the preparation method of anti-corrosion coating, all achievable technical solutions and means are utilized by this programme in publication, phase
Be not belonging to the technical essential protected of the present invention with place, therefore this will not be repeated here, and with the disclosure patent the difference lies in that
One, the present invention is cleaned, in addition, first making in S1 using the component surface that ultrasonic cleaning device dismantles the sampling valve
With being impregnated in sodium hydroxide solution again with ionized water using being cleaned by ultrasonic, the coating effect of coating can be improved；Two, super anti-adherency applies
Layer is divided into that internal layer is dense coating and outer layer is rough coatings, and the dense coating of internal layer is red, and the rough coatings of outer layer are
Blue, sampler can be entered after the super anti-adherency coating shedding of valve inner with fluid media (medium), and operator can immediately understand
To the super anti-adherency coating shedding situation of valve inner, and the feelings that fall off of inside and outside coating can be judged according to the coating color to fall off
Condition.
Sample channel tube wall on rough coatings surface need it is subsequent carry out oxidation ball-milling treatment, sample the tube wall in channel
Coating is frequently contacted with the edge of built-in punching press disk 1, the tube wall coating surface tool in the sampling channel after peroxidating ball-milling treatment
There is certain slickness, is not easy to fall off because of scraping.
Duplex sampling valve internal layer in compared to the prior art often adheres to sampled medium, preceding when every sub-sampling
The medium that valve body internal layer adheres to during primary sample can be mixed into the medium of current sample, cause to sample impure, increase sample
The problem of detection error, the present invention are coated with super anti-adherency on import valve chamber a, outlet valve chamber b and sampling vias inner walls and apply
Layer, corrosive fluid medium easily slide from this super anti-adherency coating surface, and reduction corrosive fluid medium and coating connect
Contacting surface product, reduces aggregation of the corrosive fluid medium in coating surface to reducing infiltration of the corrosive fluid medium to coating,
It realizes the inhibiting effect to corrosion, is in addition equipped with punching press scraping mechanism at sampling channel, rushed using the trickling of fluid media (medium)
Hitting power makes punching press scraping mechanism carry out the effect of striking off to the tube wall bur in sampling channel, can continue after the completion of every sub-sampling
It is passed through fluid media (medium), using punching press disk 1 built in fluid media impingement, so that the flexible swing circle 7 of hard cutting edge strikes off sampling and leads to
The a small amount of medium adhered on the tube wall in road, to improve the medium purity of lower sub-sampling, can will because caused by sample is impure sample examine
Survey error is reduced to minimum.
The foregoing is intended to be a preferred embodiment of the present invention；But scope of protection of the present invention is not limited thereto.
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of anti-internal layer adherency duplex of chemical field opens sampling valve, including import valve chamber (a) a and outlet valve chamber (b), special
Sign is: sampling channel, the import valve chamber (a), outlet valve chamber are equipped between the import valve chamber (a) and outlet valve chamber (b)
(b) and in sampling vias inner walls it is coated with super anti-adherent coating, the sampling channel lower end is provided with sample tap (Q), described
It samples and is equipped with punching press scraping mechanism at channel, the punching press scraping mechanism includes built-in punching press disk (1) and a pair of of auxiliary displaced block
(2), and a pair of of auxiliary displaced block (2) is symmetrically fixedly connected on built-in punching press disk (1) side, and the tube wall in the sampling channel is dug
Have a pair of of transverse shift slot (4), a pair of auxiliary displaced block (2) be located in a pair of of transverse shift slot (4) and with transverse direction
Displacement slot (4) is slidably connected, and the transverse shift slot (4) is fixedly connected with multi stage resilient on the side wall of import valve chamber (a)
Telescopic rod (5), one end and auxiliary displaced block (2) far from transverse shift slot (4) side wall of the multi stage resilient telescopic rod (5) are fixed
Connection, built-in punching press disk (1) edge, which is dug, to be had multiple metering holes (3), and multiple metering holes (3) be uniformly surrounded on it is built-in
On the outside of the center of circle of punching press disk (1).
2. the anti-internal layer adherency duplex of a kind of chemical field according to claim 1 opens sampling valve, it is characterised in that: described
It samples and is fixedly connected with multiple auxiliary conductings rifle (6) at the tube wall in channel, and conducting rifle (6) is assisted to be located at transverse shift slot (4)
Between outlet valve chamber (b), multiple auxiliary conductings rifle (6) match with multiple metering holes (3).
3. the anti-internal layer adherency duplex of a kind of chemical field according to claim 1 opens sampling valve, it is characterised in that: described
Built-in punching press disk (1) is set as concave face close to one end of import valve chamber (a), and concave face passes through polishing treatment.
4. the anti-internal layer adherency duplex of a kind of chemical field according to claim 1 opens sampling valve, it is characterised in that: described
Built-in punching press disk (1) side is fixedly connected with flexible swing circle (7), and the flexible outer ring end for swinging circle (7) is hard sword
Mouthful.
5. the anti-internal layer adherency duplex of a kind of chemical field according to claim 2 opens sampling valve, it is characterised in that: described
Auxiliary conducting rifle (6) passes through polishing treatment close to the one end of metering hole (3), and the inner wall of the metering hole (3) also passes through polishing
Processing.
6. the anti-internal layer adherency duplex of a kind of chemical field according to claim 1 opens sampling valve, it is characterised in that: described
The coating method of super anti-adherent coating are as follows:
S1, the sampling valve is dismantled, is put into ultrasonic cleaning device, be added in the sodium hydroxide solution of 5wt% and impregnate 30 minutes,
Then ionized water is added using ultrasonic cleaning 3-5min, picks up drying；
S2, the components that the sampling valve is dismantled are placed in the reaction cavity of plasma chamber, reaction cavity are continuously vacuumized,
The intracorporal vacuum degree of reaction chamber is extracted into 10-200 millitorr, is passed through inert gas or nitrogen；
S3, be passed through monomer vapours to vacuum degree be 30-300ml, open plasma discharge, carry out chemical vapor deposition, preparation
Dense coating；
After the completion of S4, dense coating depositions, power and the discharge time of plasma discharge are adjusted, chemical vapor deposition is carried out,
Prepare rough coatings；Prepare that internal layer is dense coating, outer layer is rough coatings on the component surface that the sampling valve is dismantled
Anti-corrosion, super anti-adherent coating；
S5, stop plasma discharge, stopping is passed through monomer vapours, persistently vacuumizes, and holding reaction cavity vacuum degree is 10-
It is passed through atmosphere after 200 millitorr 1-5min to an atmospheric pressure, then takes out the components that the sampling valve is dismantled.
7. the anti-internal layer adherency duplex of a kind of chemical field according to claim 6 opens sampling valve, it is characterised in that: S3
In, the power of the plasma discharge is 2-150W, discharge time 600-7200s.
8. the anti-internal layer adherency duplex of a kind of chemical field according to claim 6 opens sampling valve, it is characterised in that: S4
In, the power for adjusting plasma discharge is 160-500W, discharge time 60-1000s.
9. a kind of anti-internal layer adherency duplex of chemical field according to claim 1 or 6 opens sampling valve, it is characterised in that:
Rough coatings surface on the tube wall in the sampling channel needs subsequent to carry out oxidation ball-milling treatment.
10. the anti-internal layer adherency duplex of a kind of chemical field according to claim 6 opens sampling valve, it is characterised in that: institute
The dense coating of internal layer is stated as red, the rough coatings of the outer layer are blue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715994.8A CN110397775B (en) | 2019-08-05 | 2019-08-05 | Sample valve is opened in chemical industry field prevents that inlayer adhesion pair is opened |
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| CN201910715994.8A CN110397775B (en) | 2019-08-05 | 2019-08-05 | Sample valve is opened in chemical industry field prevents that inlayer adhesion pair is opened |
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| CN110397775B CN110397775B (en) | 2020-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114135679A (en) * | 2021-11-25 | 2022-03-04 | 浙江瑞通阀门有限公司 | Stop valve capable of dynamically sampling |
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|---|---|
| CN110397775B (en) | 2020-10-02 |
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Effective date of registration: 20230923 Address after: 441800 East side of Jinxiu Road, Science and Technology Industrial Park, Laohekou City, Hubei Province Patentee after: HUBEI XUEFEI CHEMICAL CO.,LTD. Address before: 317205 Zhoucun Street 2, Tiantai County, Taizhou, Zhejiang Patentee before: Zhou Tianqiao |