CN109420649A - The two phase flow cleaning method of internal channel - Google Patents
The two phase flow cleaning method of internal channel Download PDFInfo
- Publication number
- CN109420649A CN109420649A CN201710785886.9A CN201710785886A CN109420649A CN 109420649 A CN109420649 A CN 109420649A CN 201710785886 A CN201710785886 A CN 201710785886A CN 109420649 A CN109420649 A CN 109420649A
- Authority
- CN
- China
- Prior art keywords
- internal channel
- phase flow
- sand
- cleaning method
- cleaning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
Abstract
The present invention provides a kind of two phase flow cleaning method of internal channel, it includes the following steps: S100, two phase flow is injected internal channel in a manner of flowing full, two phase flow inner wall of inward passage during flowing full is by internal channel is cleaned, wherein, internal channel is in rotation status in the process of cleaning；And S200, two phase flow flow out internal channel in a manner of flowing full.The concentration and granularity that the present invention solves solid formation in two phase flow are unevenly distributed in vertical direction, and the disadvantage that can not make each side wall of internal channel that can get effective washing, pass through the rotation of internal channel, it can be ensured that each position of two phase flow inward passage wall all has optimal scouring effect.
Description
Technical field
The present invention relates to a kind of cleaning methods, specifically, being to be related to a kind of being cleaned using two phase flow inward passage
Method.
Background technique
With the development of technology, the cleaning on mechanical component surface, in machine-building, the production that remanufactures and maintain
Have become important technical process in journey.Cleaned surface can be divided into outer surface and internal surface two major classes.At present
The main means of cleaning of outer surface are jet flow cleanings, especially greasy filth dirt than it is more serious when, pressure water jet be one must not
The link that can lack, usually in the case where pressure, flow and cleaning agent proportion are appropriate, the surface that all jet streams can cover, all
With preferable cleaning effect.
But the cleaning on the surface for mechanical component internal channel, existing cleaning means all exist in this way and such scarce
It owes.There are two types of main means at present for the cleaning of inward passage, and one is Cleaning by High Pressure Water Jet, in heat exchanger inner wall, crankshaft
The cleaning occasion of oil circuit can be seen.As shown in Figure 1, High pressure water jet nozzle 11 under the push of pressure duct 12, enters
It is cleaned the inside of internal channel 13, the dirt adhered on the impact inner wall 14 of high pressure water flow short distance reaches the mesh of dirt
's.But in the case of smaller for the internal diameter of internal channel 13 of channel shape is complex, since pressure duct 12 is with biggish
Geometric dimension and rigidity, nozzle 11 cannot be introduced into the inside of internal channel 13, can not effectively be cleaned.
Another method is that flowing full washes away, and sees Fig. 2, and for fluid under the action of pump, fluid is with the flow velocity higher than working fluid
Enter from 21 flowing full of entrance, by after internal channel 23, from outlet, 22 flowing fulls flow out.Component simulation simultaneously is likely to occur at work
Vibrating state, since fluid is when inner wall 24 for flowing through internal channel 23, speed can not be very big, therefore its impulse force is not
Greatly.The theory of this cleaning is cleaned under conditions of being higher than working condition, if dirt could not fall off at this time, is considered as
In actual use, and safety.But the time of contact of cleaning solution and dirt is shorter when cleaning, and dirt is then grown when working
Phase is in working solution, in addition, being also difficult to simulate the state of dirt under thermic load state when cleaning.It may thus be appreciated that this cleaning side
Method there is also shortcoming, can not comprehensive simulated may cause the factor that dirt falls off under active usage conditions, can not exist for component
Enough safety margins are provided when normal use.
There are also a kind of technique of cleaning internal channel for being referred to as magic power stream, abrasive material is added in fluid in feature visible Fig. 3, with
The mode of flowing full enters from entrance 31, flows through cleaned internal channel 33 from outlet 32 flowing fulls outflow, this is also a kind of two phase flow
Cleaning process.In order to avoid layering of the abrasive material in flow process, using the higher fluid of viscosity as carrier, due to fluid
Viscosity is larger, and flow resistance is big, and therefore, it is difficult to realize higher flow velocity, therefore the speed of this process fluid flowing is smaller,
Abrasive material is insufficient to the impact force of inner wall 34.Simultaneously because fluid viscosity is larger, the risk that abrasive material accumulates in pipeline dead zone also compared with
Greatly, therefore it is chiefly used in the polishing in vias inner walls face 34.In addition, the viscosity due to fluid is big, the separation of solid formation is highly difficult, it is difficult to real
Now invalid abrasive material separation and abrasive material update.
Therefore, shape more complicated internal channel smaller for bore, how to channel interior, there are dirts to clean,
Not yet occurs effective cleaning process at present.
Summary of the invention
The object of the present invention is to provide a kind of cleaning methods of internal channel, are cleaned using two phase flow, are suitable for any
The internal channel of caliber and shape.
Two phase flow refers to a kind of state that fluid carry-over solid formation flows in the channel.Fluid can be water, be also possible to
It is added to the mixture of other liquid phase objects, such as cleaning agent is added in water as carrier.Solid formation can be quartz sand, slag
Powder is also possible to other granule solid objects.
Due to being solid formation as the two phase flow of cleaning abrasive material using sand, there is raw material to be easy to get, coordinative composition of equipments using water as fluid
The features such as easy, low, the invalid abrasive material of operating cost removal facilitates, therefore the present invention is using water sand two phase flow as leading technology hand
Section illustrates the method characteristic of two phase flow cleaning internal channel of the invention.
To achieve the goals above, the two phase flow cleaning method of internal channel of the invention comprising following steps: S100,
Water sand two phase flow is injected into internal channel, water sand two phase flow inward passage during flowing full passes through internal channel in a manner of flowing full
Inner wall is cleaned, wherein internal channel is in rotation status in the process of cleaning；And S200, water sand two phase flow is with flowing full
Mode flows out internal channel.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, in the S100, internal channel was being cleaned
Rotation status is in rotation status or interval always in journey.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, the water sand two phase flow is clear water and sand
Fluid-mixing or the fluid-mixing of aqueous solvent and sand that is formed of clear water and additive.
It further include passing through clear water in the S100 in one embodiment of the two phase flow cleaning method of above-mentioned internal channel
Mainstream and sand aqueous mixtures are mixed to form water sand two phase flow, wherein clear water mainstream was injected by nozzle and in the week of nozzle
It encloses to form negative pressure, mixed mode sucks sand aqueous mixtures later, and sand aqueous mixtures are mutually mixed with clear water mainstream in the front end of nozzle
Form water sand two phase flow.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, further include in the S100, passes through one time
Adapter connects internal channel, makes internal channel in cleaning process in rotation status.
It further include walking as follows after the S200 in one embodiment of the two phase flow cleaning method of above-mentioned internal channel
It is rapid:
S300 is injected rinsing liquid in internal channel and is rinsed with the internal channel completed to cleaning.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, the S300 further includes that internal channel is rinsing
Process is in the step of rotation status.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, in the S300, internal channel is rinsed
Rotation status is in rotation status or interval always in journey.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, in the S300, the entrance of clear water mainstream
Channel and the channel that enters of sand aqueous mixtures are closed, and open rinsing water stream channel, rinsing liquid is entered by rinsing water stream channel
Internal channel.
In one embodiment of the two phase flow cleaning method of above-mentioned internal channel, in the S100 further include: interior conduit is horizontal
To placement, rotated along a fixing axle.
Beneficial functional of the invention is solve solid formation in two phase flow using the cleaning method of internal channel of the invention
Concentration and the disadvantage that is unevenly distributed in vertical direction of granularity, pass through the rotation of internal channel, it can be ensured that two phase flow inward passage
Each position of wall all has optimal scouring effect.
It is also saved simultaneously using high viscosity fluid as the various difficulties of carrier bring, this method can be easy
The broken solid formation of removal, supplements new solid formation, it is ensured that the effective scouring capability of two phase flow can be also effectively prevented to fluid
The injury of driving device simplifies driving device.Avoid high viscosity fluid as carrier bring unfavorable factor, it can be effective
Reduction running expense.
From another level, since cleaning process is provided with a use condition more harsh than use state, this
Under the conditions of, if dirt is washed down, so that it may be excreted with liquid stream, if can not washed away, so that it may think in phase
It under lighter virtual condition, will not be washed down, the operation of equipment will not be damaged.
The cleaning condition more harsh than operating condition can make cleaned component have bigger safety margin.
The on-line monitoring to cleaning solution can be passed through simultaneously, it can be ensured that the cleaning quality of each component workpiece.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the schematic diagram of the first cleaning way of the internal channel of the prior art；
Fig. 2 is the schematic diagram of the second cleaning way of the internal channel of the prior art；
Fig. 3 is the schematic diagram of the third cleaning way of the internal channel of the prior art；
Fig. 4 is the structural map of two phase flow；
The step of Fig. 5 a is the water sand two phase flow cleaning method of internal channel of the invention is schemed；
Fig. 5 b is the process schematic representation of the water sand two phase flow cleaning method of internal channel of the invention；
Fig. 6 is the structural schematic diagram of the sand water mixing device of the water sand two phase flow cleaning method of internal channel of the invention.
Wherein, appended drawing reference
In the prior art
11 nozzles
12 pressure ducts
13 internal channels
14 inner walls
21 entrances
22 outlets
23 internal channels
24 inner walls
31 entrances
32 outlets
33 internal channels
34 inner walls
In the present invention
11a internal channel
110 enter channel
120 nozzles
130 enter channel
140 enter channel
150 sand water mixing chambers
160 swivel joints
Z1 low density area
Density region in Z2
Z3 high density area
S1 clear water mainstream
S2 sand aqueous mixtures
S3 rinses water flow
Specific embodiment
Technical solution of the present invention is described in detail in the following with reference to the drawings and specific embodiments, to be further understood that
The purpose of the present invention, scheme and effect, but it is not intended as the limitation of scope of the appended claims of the present invention.
When water sand two phase flow passes through interior conduit, strong to the appearance of the inner wall of interior conduit it can wash away and wear, this effect
Fruit plays the effect of cleaning inner wall of the pipe just in the cleaning demand of internal channel.Therefore, using the higher two phase flow of flow velocity
As cleaning internal channel technological measure be it is feasible, certainly internal channel cleaning in introduce water sand two phase flow, also sufficiently to examine
The characteristics of considering the demand and two phase flow of cleaning.
The construction of water sand two phase flow in laterally disposed internal channel can be as shown in Figure 4.Mistake of the solid formation in flowing
In journey under the action of gravitational field, sedimentation is inevitably generated, is layered, it can be qualitatively by abrasive material (sand in Fig. 4
Son) distributed-hierarchical, upper layer be low density area Z1, centre be middle density region Z2, bottom be high density area Z3.Wherein, upper layer
The quantity of the abrasive material of low density area Z1 is few, and size is also small, and the quantity of the abrasive material of the high density area Z3 of bottom is more, and size is also big.Cause
This is it is found that the cleaning effect of the inner wall of variant density region inward passage is also different.If the gross density of abrasive material is suitable,
The high density area Z3 with higher density abrasive material of possible bottom has preferable effect；If gross density is excessive, the height of bottom
The abrasive material of density region Z3 deposition is excessive, sand pad phenomenon occurs, then the cleaning effect of middle density region Z2 that may be intermediate is preferable.
If cleaned using water sand two phase flow to laterally disposed interior conduit, internal channel of the water sand two phase flow in workpiece
It necessarily will appear the layering of abrasive material distribution when middle movement, side effect embodies, that is, to the inner wall of interior conduit different height
The cleaning effect in face is different, and the cleaning effect of the inner wall of certain height is likely to undesirable.According to the above, of the invention
The water sand two phase flow cleaning method of internal channel takes the method for allowing internal channel to rotate during cleaning, makes with abrasive material
Two phase flow is under the driving of pump, and by the internal channel of rotation, abrasive material can effectively act on internal channel to the impact of tube wall
Preferable cleaning effect is played on each surface, without, as carrier, can effectively be lowered into using highly viscous fluid
This, reduces subsequent and cleaning trouble.
Specifically, as shown in figure 5 a and 5b, the water sand two phase flow cleaning method of internal channel of the invention includes following step
It is rapid:
Water sand two phase flow is injected internal channel 11a by S100 in a manner of flowing full, and water sand two phase flow passes through internal channel in flowing full
The inner wall of inward passage 11a is cleaned during 11a, wherein internal channel 11a is in rotation status in the process of cleaning
(such as rotation arrows direction shown in Fig. 5 b)；
S200, water sand two phase flow flow out internal channel 11a in a manner of flowing full.
Water sand two phase flow in the present embodiment can be the fluid-mixing of clear water and sand, and internal channel in the process of cleaning may be used
To be in rotation status always, it can also intermittently be in rotation status.
The rotation of internal channel makes the total surface of internal channel have an opportunity through the region with good cleaning effect, to reach
Optimal cleaning effect.
It wherein, further include that water sand two phase flow is mixed to form by clear water mainstream and sand aqueous mixtures in S100, wherein clear
Water mainstream is injected by nozzle and is formed around nozzle negative pressure, to sand aqueous mixtures be sucked, sand aqueous mixtures
It is mutually mixed with clear water mainstream in the front end of nozzle and forms water sand two phase flow.Sand water combination construction is to realize the new cleaning process of two phase flow
It is crucial.Specifically, as shown in fig. 6, clear water mainstream S1 from enter channel 110 by entering sand water mixing chamber 150 when nozzle 120
When, due to the raising of flow velocity, negative pressure is formed around nozzle 120, then after mixed mode by sand aqueous mixtures S2 from into
Enter the sand water mixing chamber 150 of the front end of 130 inlet nozzle 120 of channel, sand aqueous mixtures S2 is mixed with clear water mainstream S 1 in sand water
150 phase of room is mixed to form water sand two phase flow, and from the outflow of sand water mixing chamber 150 and flowing full enters internal channel, in internal channel flowing
Cleaning process is completed in the process.Two phase flow needed for the present invention forms work by the way of mixing after, effectively prevents solid formation
Abrasion of the abrasive material to water pump.
Wherein, control water sand can be reached by controlling the concentration by entering the sand aqueous mixtures S2 that channel 130 sucks
The purpose of solid formation content in two phase flow.
Further include that internal channel is connected by single-revolution connector in S100, makes internal channel in cleaning process in contorted
State.As shown in fig. 6, adding a swivel joint 160 in the front end of sand water mixing chamber 150.The rotating part of swivel joint 160 with
Internal channel is connected, and the fixed part of swivel joint 160 couples with water supply pipe, it can be ensured that in internal channel during revolution
Fluid circuit unimpeded and ensure that internal channel can be turned round along the axis of a certain determination.
Further, further include following steps after S200:
S300 is injected rinsing liquid in internal channel and is rinsed with the internal channel completed to cleaning.
Specifically, due to usually in cleaning solution there are also a certain number of cleaning agents, this cleaning agent be mostly it is alkaline, because
This needs to be rinsed using clear water or the clear water containing antirust agent after the completion of cleaning, can still use clean back at this time
Road, the input for rinsing water flow S3 at this time can avoid nozzle 120, be directly entered internal channel.As shown in fig. 6, clear water mainstream S1 into
The channel 130 that enters for entering channel 110 and sand aqueous mixtures S2 is closed, and that opens rinsing water flow S3 enters channel 140, rinse water
Stream S3 is rinsed by entering the internal channel that channel 140 enters after cleaning with inward passage.
Internal channel may be at rotation status in rinse cycle, wherein internal channel can be in always in rinse cycle
Rotation status can also intermittently be in rotation status.The rotation of internal channel makes the particulate matter of the attachment of internal surface be easy quilt
It washes away.
Wherein, flow when rinsing can be greater than cleaning pump, clear to avoid that may remain in the abrasive material that internal channel inner product is deposited
State of the internal channel washed in rotation during rinsing is conducive to the discharge for the abrasive material that may accumulate.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of two phase flow cleaning method of internal channel, which comprises the steps of:
Two phase flow is injected internal channel, two phase flow inward passage during flowing full passes through internal channel by S100 in a manner of flowing full
Inner wall cleaned, wherein internal channel is in rotation status in the process of cleaning；And
S200, two phase flow flow out internal channel in a manner of flowing full.
2. the two phase flow cleaning method of internal channel according to claim 1, which is characterized in that in the S100, internal channel
Rotation status is in rotation status or interval always in the process of cleaning.
3. the two phase flow cleaning method of internal channel according to claim 1, which is characterized in that the two phase flow be clear water and
The fluid-mixing of aqueous solvent and sand that the fluid-mixing or clear water and additive of sand are formed.
4. the two phase flow cleaning method of internal channel according to claim 3, which is characterized in that further include in the S100,
Be mixed to form water sand two phase flow by clear water mainstream and sand aqueous mixtures, wherein clear water mainstream be injected by nozzle and
Negative pressure is formed around nozzle, later mixed mode sucks sand aqueous mixtures, sand aqueous mixtures in the front end of nozzle with clear water
Mainstream mutually mixes and forms water sand two phase flow.
5. the two phase flow cleaning method of internal channel according to claim 1, which is characterized in that further include in the S100,
Internal channel is connected by single-revolution connector, makes internal channel in cleaning process in rotation status.
6. the two phase flow cleaning method of internal channel according to claim 4, which is characterized in that further include after the S200
Following steps:
S300 is injected rinsing liquid in internal channel and is rinsed with the internal channel completed to cleaning.
7. the two phase flow cleaning method of internal channel according to claim 6, which is characterized in that the S300 further includes interior logical
Road is the step of rinse cycle is in rotation status.
8. the two phase flow cleaning method of internal channel according to claim 7, which is characterized in that in the S300, internal channel
Rotation status is in rotation status or interval always in rinse cycle.
9. the two phase flow cleaning method of internal channel according to claim 6, which is characterized in that in the S300, clear water master
The channel that enters into channel and sand aqueous mixtures of stream is closed, and rinsing water stream channel is opened, and rinsing liquid passes through rinsing water flow
Channel enters internal channel.
10. the two phase flow cleaning method of internal channel according to claim 1, which is characterized in that in the S100 further include:
Interior conduit is laterally disposed, rotates along a fixed axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785886.9A CN109420649A (en) | 2017-09-04 | 2017-09-04 | The two phase flow cleaning method of internal channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785886.9A CN109420649A (en) | 2017-09-04 | 2017-09-04 | The two phase flow cleaning method of internal channel |
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| CN109420649A true CN109420649A (en) | 2019-03-05 |
Family
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Family Applications (1)
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| CN201710785886.9A Pending CN109420649A (en) | 2017-09-04 | 2017-09-04 | The two phase flow cleaning method of internal channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222061A (en) * | 2020-09-18 | 2021-01-15 | 广东鸿图南通压铸有限公司 | Cleaning process with rust prevention function for three-cylinder crankcase insert |
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|---|---|---|---|---|
| DE102005058674A1 (en) * | 2005-12-08 | 2007-06-14 | Bernhard Erbertseder | Auxiliary device for work medium e.g. spiral for removing blockage in exhaust line, has circular tube section through which water under pressure flows towards interior of drain pipe for rinsing while spiral is being pulled out of drain pipe |
| CN101602057A (en) * | 2009-07-02 | 2009-12-16 | 苏婕 | A kind of online ultrasonic decontamination method and device thereof |
| CN101628290A (en) * | 2009-08-17 | 2010-01-20 | 清华大学 | Non-disassembly cleaning method of coating pipeline |
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