CN114472120A - Inner wall anticorrosion process suitable for stainless steel elbow pipe fitting - Google Patents
Inner wall anticorrosion process suitable for stainless steel elbow pipe fitting Download PDFInfo
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- CN114472120A CN114472120A CN202210179848.XA CN202210179848A CN114472120A CN 114472120 A CN114472120 A CN 114472120A CN 202210179848 A CN202210179848 A CN 202210179848A CN 114472120 A CN114472120 A CN 114472120A
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- ball
- corrosion inhibitor
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- pipe fitting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
- B05D7/225—Coating inside the pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
- B05C7/06—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work
- B05C7/08—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work for applying liquids or other fluent materials to the inside of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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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
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
- F16L58/1027—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe the coating being a sprayed layer
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention discloses an inner wall anticorrosion process suitable for stainless steel elbow pipe fittings, which belongs to the field of inner wall anticorrosion of pipe fittings, and comprises a traction soft belt, a hollow coating ball and a pressure-sensitive deformation double-bag, wherein the hollow coating ball filled with a corrosion inhibitor moves in the elbow pipe fittings to smoothly realize the anticorrosion coating on the inner wall of the elbow pipe fittings, the content of the corrosion inhibitor is gradually reduced along with the continuous use of the corrosion inhibitor in the coating process, the pressure-sensitive deformation double-bag carries out corresponding deformation according to the change of the content of the corrosion inhibitor by the induction of the pressure-sensitive deformation double-bag on the content of the corrosion inhibitor, and reversely adjusts the filling space of the corrosion inhibitor to increase the pressure on the corrosion inhibitor to force the corrosion inhibitor to be continuously discharged, thereby realizing the continuous coating process, and positioning the hollow coating ball, the pipe fitting inner wall cleaning device has the advantages that stable movement and coating are guaranteed, and meanwhile the function of cleaning the inner wall of the pipe fitting in advance is achieved.
Description
Technical Field
The invention relates to the field of corrosion prevention of inner walls of pipe fittings, in particular to an inner wall corrosion prevention process suitable for stainless steel elbow pipe fittings.
Background
The corrosion prevention of the pipe refers to the corrosion caused by the chemical reaction of the steel pipe in use and transportation under the influence of the use environment and the conveying medium. Corrosion is extremely damaging to metal pipes because the pipe, no matter how good the external coating is, how advanced the external corrosion protection process is, if internal corrosion protection is not performed, corrosion and premature failure can be caused. While the internal corrosion is concealed, the existence of the internal corrosion is often ignored by people. Meanwhile, due to the particularity of the conveying medium, the internal corrosion of the pipe is very serious and even far exceeds the external corrosion. Statistics show that up to now, the corrosion perforations of the inner wall of the pipeline account for 90% of the total corrosion perforations.
In the prior art, an anticorrosive coating is formed on the inner wall of a pipe by adopting a spraying film forming means, namely, a traction device drives a spraying device to move along the inner wall of the pipe, and the spraying device sprays the corrosion inhibitor on the inner wall of the pipe by rotating in the moving process, but firstly, the mode is difficult to use in the elbow pipe fitting, and the spraying device is difficult to move smoothly at the bent part of the elbow pipe fitting; secondly, the spraying mode of rotation combined with movement is difficult to uniformly spray the corrosion inhibitor on the inner wall of the pipe, and the sprayed corrosion inhibitor is easy to flow and drip on the inner wall of the pipe, so that the thickness of the anticorrosive film coated in the pipe is uneven.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to solve the problems in the prior art, and aims to provide an inner wall anticorrosion process suitable for stainless steel elbow pipe fittings.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting comprises a traction soft belt, a hollow coating ball and a pressure-sensing deformation double-bag, wherein the pressure-sensing deformation double-bag penetrates through the inner wall of the hollow coating ball, and the anticorrosion process comprises the following steps:
s1, adding a sufficient amount of corrosion inhibitor into the hollow coating ball to ensure that the content of the corrosion inhibitor is enough to coat the whole inner wall of the elbow pipe fitting;
s2, connecting the hollow coating ball with a traction device through a traction soft belt, placing the hollow coating ball at one end of the elbow pipe fitting, starting the traction device, and driving the hollow coating ball to move along the inside of the elbow pipe fitting through the traction soft belt;
s3, in the moving process, the corrosion inhibitor flows out from the contact position of the hollow coating ball and the elbow pipe fitting and is coated on the inner wall of the elbow pipe fitting;
s4, reducing the pressure of the corrosion inhibitor on the pressure-sensitive deformation double-bag along with the reduction of the outflow of the corrosion inhibitor, wherein the gas in the pressure-sensitive deformation double-bag flows to cause the pressure-sensitive deformation double-bag to generate corresponding deformation, so that the pressure on the corrosion inhibitor is increased, and the corrosion inhibitor is forced to continuously flow out reversely to realize continuous coating.
The invention firstly moves the hollow coating ball filled with the corrosion inhibitor in the elbow pipe fitting, can smoothly realize the anticorrosion coating on the inner wall of the elbow pipe fitting, gradually reduces the content of the corrosion inhibitor along with the continuous use of the corrosion inhibitor in the coating process, and correspondingly deforms the pressure-sensitive deformation double bags according to the change of the content of the corrosion inhibitor by the induction of the pressure-sensitive deformation double bags on the content of the corrosion inhibitor, reversely adjusts the filling space of the corrosion inhibitor, increases the pressure on the corrosion inhibitor, and forces the corrosion inhibitor to be continuously discharged, thereby realizing the continuous coating process.
Furthermore, the hollow coating ball comprises a hard hollow ball, an annular overflow channel is formed in the hard hollow ball, an annular screen plate and liquid storage cotton are fixedly connected between a pair of inner walls of the annular overflow channel, the annular screen plate penetrates through the liquid storage cotton and is fixedly connected with the inside of the liquid storage cotton, the hard hollow ball is divided into two halves by the annular overflow channel, the annular screen plate plays a role in connecting and fixing the two halves of the hard hollow ball, when the hollow coating ball is used, the hard hollow ball moves along the inner wall of the pipe fitting, the liquid storage cotton is in contact with the inner wall of the pipe fitting, and a corrosion inhibitor in the hard hollow ball enters the liquid storage cotton and then is coated on the inner wall of the pipe fitting to form an anticorrosive film.
Furthermore, the pressure-sensing deformation double-balloon comprises an outer balloon, a hard tube, a hose and an inner balloon which are mutually communicated, the open end of the outer balloon is fixedly connected to the outer end of the hard hollow sphere, the hard tube is positioned on the inner side of the outer balloon, the outer balloon penetrates through the inner wall of the hard hollow sphere and extends into the hard hollow sphere, the inner balloon is positioned inside the hard hollow sphere, the hose is fixedly connected between the inner balloon and the hard tube, the outer balloon, the hard tube, the hose and the inner balloon are all filled with nitrogen, the elastic coefficient of the outer balloon is greater than that of the inner balloon, namely the deformation of the inner balloon is greater than that of the outer balloon under the action of certain stress, in the invention, when the corrosion inhibitor is filled inside the hard hollow sphere, the inner balloon is in a saturated expansion state, the outer balloon is in a slight expansion state, and when a sufficient amount of the corrosion inhibitor is filled inside the hard hollow sphere, under the pressure action of the corrosion inhibitor, the volume of the inner air bag is gradually reduced, and nitrogen in the inner air bag enters the outer air bag through the hose and the hard tube, so that the outer air bag is in a saturated expansion state; the content of the corrosion inhibitor is gradually reduced along with the continuous use of the corrosion inhibitor, the pressure of the corrosion inhibitor on the inner air bag is correspondingly reduced, the elastic coefficient of the outer air bag is larger than that of the inner air bag, the gas in the outer air bag enters the inner air bag, the outer air bag is gradually reduced, the inner air bag is gradually expanded, the pressure on the corrosion inhibitor is increased, and the corrosion inhibitor is continuously discharged, so that the continuous coating process is realized.
Furthermore, a spherical limiting frame is further arranged inside the hard hollow ball, the spherical limiting frame comprises a hollow tennis ball positioned outside the hose and the inner air bag, the hard pipe penetrates through the outer end of the hollow tennis ball and is fixedly connected with the inside of the hollow tennis ball, a plurality of uniformly distributed supporting rods are fixedly connected between the outer end of the hollow tennis ball and the inner wall of the hard hollow ball, the spherical limiting frame plays a role in limiting the moving range of the inner air bag, the inner air bag is in an upward floating state in the corrosion inhibitor because the density of the inner air bag is less than that of the corrosion inhibitor, and the inner air bag is limited by the hollow tennis ball, so that the inner air bag is not easy to approach the annular net plate in the floating process and block the outflow of the corrosion inhibitor.
Furthermore, the hard hollow ball is far away from one end of the outer air bag and is fixedly connected with an auxiliary joint, the traction soft belt comprises an inelastic soft belt and a main joint which are fixedly connected with each other, one end of the inelastic soft belt, far away from the main joint, is connected with traction equipment, the inner end of the main joint is in threaded connection with the outer end of the auxiliary joint, when the traction equipment is used, the end part of the inelastic soft belt is connected onto the traction equipment, the main joint is connected onto the auxiliary joint, and the traction equipment and the traction soft belt drive the hollow coating ball to move and coat on the inner wall of the pipe fitting.
Furthermore, the outer end of the hard hollow ball is fixedly connected with a liquid adding pipe communicated with the interior of the hard hollow ball, the outer end of the liquid adding pipe is in threaded connection with a pipe cover, the liquid adding pipe is located between the liquid storage cotton and the outer airbag, and the corrosion inhibitor is conveniently added into the interior of the hard hollow ball through the liquid adding pipe.
Furthermore, the outer end of the hard hollow ball is fixedly connected with a limit air bag, the limit air bag is positioned between the liquid storage cotton and the auxiliary joint, the outer surface of the limit air bag is fixedly connected with the cleaning cotton, a plurality of liquid outlet holes distributed in an annular shape are formed in the hard hollow ball, the liquid outlet holes are positioned at the inner side of the opening of the limit air bag, a corrosion inhibitor in the hard hollow ball enters the limit air bag through the liquid outlet holes to enable the limit air bag to be in a saturated expansion state, the cleaning cotton is enabled to be in close contact with the inner wall of the pipe fitting through the expanded limit air bag, on one hand, the hard hollow ball is positioned through the support of the limit air bag and the cleaning cotton, so that the hard hollow ball is not easy to roll in the advancing moving process to influence the coating process, on the other hand, the inner wall of the pipe fitting can be cleaned through the cleaning cotton to clean dust on the inner wall of the pipe fitting, the inner wall of the pipe fitting can be uniformly coated conveniently.
Further, the outer fixed surface of stereoplasm hollow ball is connected with the silica gel adsorbed layer, the silica gel adsorbed layer is located between spacing gasbag and the auxiliary joint, and the silica gel adsorbed layer has the effect of adsorption dust, and when the cleaning cotton is cleaning pipe fitting inner wall in-process, partly dust can fly off to the intraductal air, and the absorption through the silica gel adsorbed layer can make the dust be difficult for being infected with once more on the pipe fitting inner wall.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the hollow coating ball filled with the corrosion inhibitor moves in the elbow pipe fitting, so that the anticorrosion coating on the inner wall of the elbow pipe fitting can be smoothly realized, the content of the corrosion inhibitor is gradually reduced along with the continuous use of the corrosion inhibitor in the coating process, the pressure-sensitive deformation double bags perform corresponding deformation according to the change of the content of the corrosion inhibitor through the induction of the pressure-sensitive deformation double bags on the content of the corrosion inhibitor, the filling space of the corrosion inhibitor is reversely adjusted, the pressure on the corrosion inhibitor is increased, the corrosion inhibitor is forced to be continuously removed, and the continuous coating process is realized.
(2) The hollow coating ball comprises hard hollow balls, an annular overflow channel is formed in each hard hollow ball, an annular screen plate and liquid storage cotton are fixedly connected between a pair of inner walls of the annular overflow channel, the annular screen plate penetrates through the liquid storage cotton and is fixedly connected with the inner parts of the liquid storage cotton, the hard hollow balls are divided into two halves by the annular overflow channel, the annular screen plate plays a role in connecting and fixing the two half hard hollow balls, during use, the hard hollow balls move along the inner walls of the pipe fittings, the liquid storage cotton is in contact with the inner walls of the pipe fittings, and a corrosion inhibitor inside the hard hollow balls enters the liquid storage cotton and then coats the inner walls of the pipe fittings to form an anticorrosive film.
(3) The pressure-sensing deformation double-bag comprises an outer bag, a hard tube, a hose and an inner bag which are mutually communicated, wherein when a corrosion inhibitor is filled in the hard hollow ball, the inner bag is in a saturated expansion state, the outer bag is in a slight expansion state, when the hard hollow ball is filled with a sufficient amount of corrosion inhibitor, the volume of the inner bag is gradually reduced under the pressure action of the corrosion inhibitor, and nitrogen in the inner bag enters the outer bag through the hose and the hard tube, so that the outer bag is in a saturated expansion state; the content of the corrosion inhibitor is gradually reduced along with the continuous use of the corrosion inhibitor, the pressure of the corrosion inhibitor on the inner air bag is correspondingly reduced, the elastic coefficient of the outer air bag is larger than that of the inner air bag, the gas in the outer air bag enters the inner air bag, the outer air bag is gradually reduced, the inner air bag is gradually expanded, the pressure on the corrosion inhibitor is increased, and the corrosion inhibitor is continuously discharged, so that the continuous coating process is realized.
(4) The spherical limiting frame is arranged inside the hard hollow ball and comprises a hollow tennis ball positioned outside the hose and the inner air bag, the hard pipe penetrates through the outer end of the hollow tennis ball and is fixedly connected with the inside of the hollow tennis ball, a plurality of uniformly distributed support rods are fixedly connected between the outer end of the hollow tennis ball and the inner wall of the hard hollow ball, the spherical limiting frame plays a role in limiting the moving range of the inner air bag, the inner air bag is in an upward floating state in the corrosion inhibitor because the density of the inner air bag is less than that of the corrosion inhibitor, and the inner air bag is not easy to approach the annular net plate in the floating process through the limitation of the inner air bag of the hollow tennis ball so as to block the outflow of the corrosion inhibitor.
(5) The one end fixedly connected with auxiliary joint that outer gasbag was kept away from to stereoplasm clean shot, pull soft area and include mutual fixed connection inelastic soft area and main joint, the one end that the main joint was kept away from in inelastic soft area is connected with traction equipment, the inner of main joint and the outer end threaded connection of auxiliary joint, when using, with the end connection in inelastic soft area on traction equipment, connect main joint on auxiliary joint, through traction equipment with pull soft area drive hollow coating ball and remove and the coating at the pipe fitting inner wall.
(6) The outer end of the hard hollow ball is fixedly connected with a liquid feeding pipe communicated with the interior of the hard hollow ball, the outer end of the liquid feeding pipe is in threaded connection with a pipe cover, the liquid feeding pipe is located between the liquid storage cotton and the outer gasbag, and a corrosion inhibitor is conveniently added into the interior of the hard hollow ball through the liquid feeding pipe.
(7) The outer end of the hard hollow ball is also fixedly connected with a limiting air bag which is positioned between the liquid storage cotton and the auxiliary joint, the outer surface of the limiting air bag is fixedly connected with the cleaning cotton, a plurality of liquid outlet holes which are distributed in an annular shape are arranged on the hard hollow ball, the liquid outlet holes are positioned at the inner side of the opening of the limiting air bag, corrosion inhibitor in the hard hollow ball enters the limiting air bag through the liquid outlet holes to enable the limiting air bag to be in a saturated expansion state, the cleaning cotton is tightly contacted with the inner wall of the pipe fitting through the expanded limit air bag, on one hand, the hard hollow ball is positioned through the limit air bag and the support of the cleaning cotton, so that the hard hollow ball is not easy to roll in the process of moving forwards to influence the coating process, on the other hand, the inner wall of the pipe fitting can be cleaned through the cleaning cotton, dust on the inner wall of the pipe fitting is cleaned, and the inner wall of the pipe fitting is conveniently and uniformly coated.
(8) The outer fixed surface of stereoplasm clean shot is connected with the silica gel adsorbed layer, and the silica gel adsorbed layer is located between spacing gasbag and the secondary joint, and the silica gel adsorbed layer has the effect of adsorbing the dust, is wiping pipe fitting inner wall in-process when the cleaning cotton, and partly dust can fly to intraductal air in, and the absorption through the silica gel adsorbed layer can make the dust be difficult for staining once more on the pipe fitting inner wall.
Drawings
FIG. 1 is a block flow diagram of the present invention;
FIG. 2 is a perspective view of the hollow coated spheres of the present invention in use;
FIG. 3 is a perspective view of a hollow coated sphere of the present invention;
FIG. 4 is a schematic front view of a hollow coated ball according to the present invention;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic view of the structure at B in FIG. 4;
FIG. 7 is a schematic diagram showing the front structure of the hollow coating ball of the present invention in use;
fig. 8 is a schematic front view of the hollow coating ball of the present invention.
The reference numbers in the figures illustrate:
the device comprises an inelastic soft belt 1, a main joint 2, a hard hollow sphere 31, a 3101 annular overflow channel, a 3102 liquid outlet hole, a 32 annular net plate, liquid storage cotton 33, an auxiliary joint 34, a liquid adding pipe 35, an outer air bag 41, a hard pipe 42, a flexible pipe 43, an inner air bag 44, a hollow tennis ball 5, a support rod 6, a limit air bag 7, cleaning cotton 8 and a silica gel adsorption layer 9.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, an inner wall anticorrosion process suitable for stainless steel elbow pipe fittings comprises a traction soft belt, a hollow coating ball and a pressure-sensitive deformation double-bag, wherein the pressure-sensitive deformation double-bag penetrates through the inner wall of the hollow coating ball, and the anticorrosion process comprises the following steps:
s1, adding a sufficient amount of corrosion inhibitor into the hollow coating ball to ensure that the content of the corrosion inhibitor is enough to coat the whole inner wall of the elbow pipe fitting;
s2, connecting the hollow coating ball with a traction device through a traction soft belt, placing the hollow coating ball at one end of the elbow pipe fitting, starting the traction device, and driving the hollow coating ball to move along the inside of the elbow pipe fitting through the traction soft belt;
s3, in the moving process, the corrosion inhibitor flows out from the contact position of the hollow coating ball and the elbow pipe fitting and is coated on the inner wall of the elbow pipe fitting;
s4, as the outflow of the corrosion inhibitor is reduced, the pressure of the corrosion inhibitor on the pressure-sensitive deformation double-bag is also reduced, and the gas in the pressure-sensitive deformation double-bag flows to cause the pressure-sensitive deformation double-bag to generate corresponding deformation, so that the pressure on the corrosion inhibitor is increased, and the corrosion inhibitor is forced to continuously flow out reversely, thereby realizing continuous coating.
Referring to fig. 3 and 4, the hollow coating ball includes a hard hollow ball 31, an annular overflow channel 3101 is formed on the hard hollow ball 31, an annular mesh plate 32 and a liquid storage cotton 33 are fixedly connected between a pair of inner walls of the annular overflow channel 3101, the annular mesh plate 32 penetrates the liquid storage cotton 33 and is fixedly connected with the inside of the liquid storage cotton 33, the hard hollow ball 31 is divided into two halves by the annular overflow channel 3101, the annular mesh plate 32 plays a role of connecting and fixing the two halves of the hard hollow ball 31, when in use, the hard hollow ball 31 moves along the inner wall of the pipe, the liquid storage cotton 33 is contacted with the inner wall of the pipe, and the corrosion inhibitor inside the hard hollow ball 31 enters the liquid storage cotton 33 and is coated on the inner wall of the pipe to form an anticorrosive film.
Referring to fig. 4, the pressure-sensitive deformable double bladder includes an outer bladder 41, a rigid tube 42, a flexible tube 43 and an inner bladder 44 that are communicated with each other, an open end of the outer bladder 41 is fixedly connected to an outer end of the rigid hollow sphere 31, the rigid tube 42 is located inside the outer bladder 41, the outer bladder 41 penetrates through an inner wall of the rigid hollow sphere 31 and extends into the rigid hollow sphere 31, the inner bladder 44 is located inside the rigid hollow sphere 31, the flexible tube 43 is fixedly connected between the inner bladder 44 and the rigid tube 42, the outer bladder 41, the rigid tube 42, the flexible tube 43 and the inner bladder 44 are all filled with nitrogen, an elastic coefficient of the outer bladder 41 is greater than an elastic coefficient of the inner bladder 44, that is, under a certain stress, a deformation amount of the inner bladder 44 is greater than a deformation amount of the outer bladder 41, referring to fig. 7 and 8, in the present invention, when the interior of the rigid hollow sphere 31 is filled with a corrosion inhibitor, the inner bladder 44 is in a saturated expansion state, the outer air sac 41 is in a slight expansion state, when the hard hollow ball 31 is filled with enough corrosion inhibitor, the volume of the inner air sac 44 is gradually reduced under the pressure of the corrosion inhibitor, and nitrogen in the inner air sac 44 enters the outer air sac 41 through the hose 43 and the hard tube 42, so that the outer air sac 41 is in a saturated expansion state; with the continuous use of the corrosion inhibitor, the content of the corrosion inhibitor is gradually reduced, the pressure of the corrosion inhibitor on the inner airbag 44 is correspondingly reduced, because the elastic coefficient of the outer airbag 41 is greater than that of the inner airbag 44, the gas in the outer airbag 41 enters the inner airbag 44 again, the outer airbag 41 is gradually shrunk, the inner airbag 44 is gradually expanded, the pressure on the corrosion inhibitor is increased, the corrosion inhibitor is continuously discharged, and the continuous coating process is realized.
Referring to fig. 8, a spherical limiting frame is further disposed inside the hard hollow ball 31, the spherical limiting frame includes a hollow tennis ball 5 located outside the flexible tube 43 and the inner bladder 44, the hard tube 42 penetrates through the outer end of the hollow tennis ball 5 and is fixedly connected with the inside of the hollow tennis ball 5, a plurality of evenly distributed struts 6 are fixedly connected between the outer end of the hollow tennis ball 5 and the inner wall of the hard hollow ball 31, the spherical limiting frame plays a role in limiting the range of motion of the inner bladder 44, because the density of the inner bladder 44 is less than that of the corrosion inhibitor, the inner bladder 44 is in an upward floating state in the corrosion inhibitor, and the inner bladder 44 is limited by the hollow tennis ball 5, so that the inner bladder 44 is not easy to approach the annular mesh plate 32 in the floating process, and the outflow of the corrosion inhibitor is hindered.
Referring to fig. 7, one end of the hard hollow ball 31, which is far away from the outer air bag 41, is fixedly connected with an auxiliary joint 34, the soft traction belt comprises an inelastic soft belt 1 and a main joint 2 which are fixedly connected with each other, one end of the inelastic soft belt 1, which is far away from the main joint 2, is connected with traction equipment, the inner end of the main joint 2 is in threaded connection with the outer end of the auxiliary joint 34, when the device is in use, the end of the inelastic soft belt 1 is connected with the traction equipment, the main joint 2 is connected with the auxiliary joint 34, the traction equipment and the soft traction belt drive the hollow coating ball to move and coat on the inner wall of the pipe fitting, the outer end of the hard hollow ball 31 is fixedly connected with a liquid feeding pipe 35 communicated with the inside of the hard hollow ball 31, the outer end of the liquid feeding pipe 35 is in threaded connection with a pipe cover, the liquid feeding pipe 35 is located between the liquid storage cotton 33 and the outer air bag 41, and a corrosion inhibitor is conveniently added into the inside of the hard hollow ball 31 through the liquid feeding pipe 35.
Referring to fig. 4 and 6, the outer end of the hard hollow sphere 31 is further fixedly connected with a limiting airbag 7, the limiting airbag 7 is located between the liquid storage cotton 33 and the sub-joint 34, the outer surface of the limiting airbag 7 is fixedly connected with the cleaning cotton 8, a plurality of liquid outlet holes 3102 distributed in an annular shape are formed in the hard hollow sphere 31, the liquid outlet holes 3102 are located inside an opening of the limiting airbag 7, a corrosion inhibitor in the hard hollow sphere 31 enters the limiting airbag 7 through the liquid outlet holes 3102 to enable the limiting airbag 7 to be in a saturated expansion state, the cleaning cotton 8 is in close contact with the inner wall of the pipe fitting through the expanded limiting airbag 7, on one hand, the hard hollow sphere 31 is positioned by the support of the limiting airbag 7 and the cleaning cotton 8, so that the hard hollow sphere 31 is not easy to roll in the advancing moving process to affect the coating process, on the other hand, the inner wall of the pipe fitting can be wiped by the cleaning cotton 8, clear up the dust on the pipe fitting inner wall, the convenience is to the even coating of pipe fitting inner wall, the outer fixed surface of stereoplasm hollow ball 31 is connected with silica gel adsorbed layer 9, silica gel adsorbed layer 9 is located between spacing gasbag 7 and the left-hand member 34, silica gel adsorbed layer 9 has the effect of adsorption of dust, when cleaning cotton 8 is cleaning pipe fitting inner wall in-process, partly dust can fly to intraductal air, the absorption through silica gel adsorbed layer 9 can make the dust be difficult for being infected with once more on the pipe fitting inner wall.
The invention firstly moves the hollow coating ball filled with the corrosion inhibitor in the elbow pipe fitting to smoothly realize the anticorrosive coating on the inner wall of the elbow pipe fitting, and in the coating process, along with the continuous use of the corrosion inhibitor, the content of the corrosion inhibitor is gradually reduced, and the pressure-sensitive deformation double-bag carries out corresponding deformation according to the change of the content of the corrosion inhibitor by the induction of the pressure-sensitive deformation double-bag on the content of the corrosion inhibitor, and reversely adjusts the filling space of the corrosion inhibitor to increase the pressure on the corrosion inhibitor and force the corrosion inhibitor to continuously flow out, thereby realizing the continuous coating process.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (8)
1. An inner wall anticorrosion process suitable for stainless steel elbow pipe fittings is characterized in that: the anti-corrosion process comprises the following steps:
s1, adding a sufficient amount of corrosion inhibitor into the hollow coating ball to ensure that the content of the corrosion inhibitor is enough to coat the whole inner wall of the elbow pipe fitting;
s2, connecting the hollow coating ball with a traction device through a traction soft belt, placing the hollow coating ball at one end of the elbow pipe fitting, starting the traction device, and driving the hollow coating ball to move along the inside of the elbow pipe fitting through the traction soft belt;
s3, in the moving process, the corrosion inhibitor flows out from the contact position of the hollow coating ball and the elbow pipe fitting and is coated on the inner wall of the elbow pipe fitting;
s4, reducing the pressure of the corrosion inhibitor on the pressure-sensitive deformation double-bag along with the reduction of the outflow of the corrosion inhibitor, wherein the gas in the pressure-sensitive deformation double-bag flows to cause the pressure-sensitive deformation double-bag to generate corresponding deformation, so that the pressure on the corrosion inhibitor is increased, and the corrosion inhibitor is forced to continuously flow out reversely to realize continuous coating.
2. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, according to claim 1, is characterized in that: the hollow coating ball comprises a hard hollow ball (31), an annular overflow channel (3101) is formed in the hard hollow ball (31), an annular screen plate (32) and liquid storage cotton (33) are fixedly connected between a pair of inner walls of the annular overflow channel (3101), and the annular screen plate (32) penetrates through the liquid storage cotton (33) and is fixedly connected with the inside of the liquid storage cotton (33).
3. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, as claimed in claim 2, wherein: the pressure-sensing deformation double-bag comprises an outer bag (41), a hard tube (42), a hose (43) and an inner bag (44) which are communicated with each other, the open end of the outer bag (41) is fixedly connected to the outer end of the hard hollow ball (31), the hard tube (42) is located on the inner side of the outer bag (41), the outer bag (41) penetrates through the inner wall of the hard hollow ball (31) and extends to the inside of the hard hollow ball (31), the inner bag (44) is located inside the hard hollow ball (31), the hose (43) is fixedly connected between the inner bag (44) and the hard tube (42), the outer bag (41), the hard tube (42), the hose (43) and the inner bag (44) are filled with nitrogen, and the elastic coefficient of the outer bag (41) is greater than that of the inner bag (44).
4. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, according to claim 3, is characterized in that: the hard hollow ball (31) is internally provided with a spherical limiting frame, the spherical limiting frame comprises a hollow tennis ball (5) positioned at the outer sides of a hose (43) and an inner air bag (44), the hard tube (42) penetrates through the outer end of the hollow tennis ball (5) and is fixedly connected with the inside of the hollow tennis ball (5), and a plurality of uniformly distributed supporting rods (6) are fixedly connected between the outer end of the hollow tennis ball (5) and the inner wall of the hard hollow ball (31).
5. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, according to claim 3, is characterized in that: one end fixedly connected with auxiliary joint (34) of outer gasbag (41) is kept away from in stereoplasm hollow ball (31), pull soft area including mutual fixed connection inelastic soft area (1) and main joint (2), the one end that main joint (2) were kept away from in inelastic soft area (1) is connected with traction equipment, the inner of main joint (2) and the outer end threaded connection of auxiliary joint (34).
6. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, according to claim 3, is characterized in that: the outer end of the hard hollow ball (31) is fixedly connected with a liquid feeding pipe (35) communicated with the interior of the hard hollow ball (31), the outer end of the liquid feeding pipe (35) is in threaded connection with a pipe cover, and the liquid feeding pipe (35) is located between the liquid storage cotton (33) and the outer airbag (41).
7. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, according to claim 5, is characterized in that: the outer end of the hard hollow ball (31) is fixedly connected with a limit air bag (7), the limit air bag (7) is located between the liquid storage cotton (33) and the auxiliary joint (34), the outer surface of the limit air bag (7) is fixedly connected with cleaning cotton (8), a plurality of liquid outlet holes (3102) which are distributed annularly are formed in the hard hollow ball (31), and the liquid outlet holes (3102) are located on the inner side of an opening of the limit air bag (7).
8. The inner wall anticorrosion process suitable for the stainless steel elbow pipe fitting, according to claim 7, is characterized in that: the outer fixed surface of hard hollow ball (31) is connected with silica gel adsorbed layer (9), silica gel adsorbed layer (9) are located between spacing gasbag (7) and auxiliary joint (34).
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Denomination of invention: An inner wall anti-corrosion process suitable for stainless steel elbow fittings Effective date of registration: 20230615 Granted publication date: 20230124 Pledgee: Zhejiang Lishui Liandu Rural Commercial Bank Co.,Ltd. Nancheng Branch Pledgor: Huabo Management Co.,Ltd. Registration number: Y2023330001212 |
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