CN113667984B - Corrosion inhibitor and pipeline corrosion inhibitor film coating device - Google Patents
Corrosion inhibitor and pipeline corrosion inhibitor film coating device Download PDFInfo
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- CN113667984B CN113667984B CN202010402274.9A CN202010402274A CN113667984B CN 113667984 B CN113667984 B CN 113667984B CN 202010402274 A CN202010402274 A CN 202010402274A CN 113667984 B CN113667984 B CN 113667984B
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
- C23F11/187—Mixtures of inorganic inhibitors
- C23F11/188—Mixtures of inorganic inhibitors containing phosphates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A corrosion inhibitor and a pipeline corrosion inhibitor film coating device. The invention provides a pipeline corrosion inhibitor film coating device which comprises a pipe body, wherein a first supporting mechanism, a second supporting mechanism and a cleaning mechanism are arranged outside the pipe body; the inside solvent chamber that is equipped with of body is equipped with on the body with solvent chamber intercommunication annotate liquid mouth and air inlet, annotate the liquid mouth in be equipped with the sealing plug, be equipped with one-way admission valve in the air inlet, the inside annular air cavity that is equipped with of body first end, be equipped with on the body with the induced-draft mouth of annular air cavity intercommunication, be equipped with the draught fan in the induced-draft mouth, the outside circumference of body first end is arranged a plurality of spray tubes of being connected perpendicularly with the body, be equipped with the spout that follows its axial arrangement in the spray tube, the spout passes through air guide way and annular air cavity intercommunication, still be equipped with the hydrojet way that surrounds the spiral of spout and arrange in the body, the spiral center pin of hydrojet way coincides with the center pin of spouting the air channel, and hydrojet way and solvent chamber intercommunication, hydrojet way and solvent chamber junction are equipped with atomizing nozzle. The invention can uniformly coat the corrosion inhibitor on the inner wall of the pipeline, and has good coating effect.
Description
Technical Field
The invention relates to the technical field of corrosion inhibitors, in particular to a corrosion inhibitor and a pipeline corrosion inhibitor coating device.
Background
At present, in the industry, aiming at corrosion of equipment and pipelines caused by Cl ions and H ions generated by ionization of sodium chloride and calcium chloride solutions in a central air conditioner and a circulating refrigerant system in the operation process, the common water treatment process flow is generally adopted in the industry to carry out treatment, water sample analysis is carried out first, then the material is fed through a temporarily proportioned anion-cation inhibition treatment medicament, and the formula is continuously adjusted to carry out periodic material feeding control according to detection in a period, so that the cost is high, the effect is poor, and the service life of the equipment is seriously influenced.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides a corrosion inhibitor and a pipeline corrosion inhibitor coating device.
The invention provides a corrosion inhibitor, which comprises the following raw materials in percentage by mass: 21-31% of trisodium phosphate, 30-42% of sodium tripolyphosphate, 5.5-10.5% of sodium hexametaphosphate, 8.5-14.5% of hydroxy ethylidene tetrasodium diphosphate, 10-15% of urotropine, 0.5-1.5% of silicon dioxide, 0.5-1.5% of benzotriazole, 1-5% of molybdate and the balance of deionized water.
Preferably, the raw materials comprise the following components in percentage by mass: 26.6% of trisodium phosphate, 36.7% of sodium tripolyphosphate, 8.1% of sodium hexametaphosphate, 12.2% of tetra sodium hydroxyethylidene diphosphate, 12.2% of urotropine, 0.81% of silicon dioxide, 0.81% of benzotriazole, 2.1% of molybdate and the balance of deionized water.
Preferably, the raw materials comprise the following components in percentage by mass: 21% of trisodium phosphate, 42% of sodium tripolyphosphate, 10.5% of sodium hexametaphosphate, 8.5% of tetra sodium hydroxy ethylidene diphosphate, 10% of urotropine, 0.5% of silicon dioxide, 0.5% of benzotriazole, 1% of molybdate and the balance of deionized water.
Preferably, the raw materials comprise the following components in percentage by mass: 31% of trisodium phosphate, 30% of sodium tripolyphosphate, 5.5% of sodium hexametaphosphate, 14.5% of tetra sodium hydroxy ethylidene diphosphate, 15% of urotropine, 1.5% of silicon dioxide, 1.5% of benzotriazole, 5% of molybdate and the balance of deionized water.
The invention also provides a corrosion inhibitor film coating device for the pipeline by using the corrosion inhibitor, which comprises a pipeline body, wherein a first supporting mechanism, a second supporting mechanism and a cleaning mechanism are sequentially arranged outside the pipeline body from a first end to a second end; the inside solvent chamber that annotates corrosion inhibitor that is equipped with of body, be equipped with on the body with solvent chamber intercommunication annotate liquid mouth and air inlet, annotate the liquid mouth in be equipped with the sealing plug, be equipped with one-way admission valve in the air inlet, the inside annular air cavity that is equipped with of body first end, be equipped with the induced-draft mouth with annular air cavity intercommunication on the body, be equipped with the draught fan in the induced-draft mouth, the outside circumference of body first end is arranged a plurality of spray tubes that are connected perpendicularly with the body, be equipped with the spout that follows its axial arrangement in the spout, the spout communicates with annular air cavity through the air duct, still be equipped with the hydrojet way that surrounds the hydrojet way spiral arrangement in the body, the spiral center pin of hydrojet way coincides with the center pin of spouting the air duct, and hydrojet way and solvent chamber intercommunication, hydrojet way and solvent chamber junction are equipped with atomizing nozzle.
Preferably, the first supporting mechanism comprises a first supporting ring and a plurality of first supporting wheels, the first supporting ring is sleeved outside the pipe body, the central shaft of the first supporting ring coincides with the central shaft of the pipe body, the first supporting ring is connected with the outer wall of the pipe body through a plurality of first connecting pieces, a plurality of first installation frames are circumferentially arranged outside the first supporting ring, the plurality of first supporting wheels are respectively in one-to-one correspondence with the plurality of first installation frames, and the plurality of first supporting wheels are respectively in rotary connection with the plurality of first installation frames.
Preferably, the first supporting ring and the first connecting piece are made of flexible materials with elasticity; preferably, the first support wheel is made of polyurethane or rubber material having elasticity and wear resistance.
Preferably, the second supporting mechanism comprises a second supporting ring and a plurality of second supporting wheels, the second supporting ring is sleeved outside the pipe body, the central shaft of the second supporting ring coincides with the central shaft of the pipe body, the second supporting ring is connected with the outer wall of the pipe body through a plurality of second connecting pieces, a plurality of second installation frames are circumferentially arranged outside the second supporting ring, the second supporting wheels are respectively arranged in one-to-one correspondence with the second installation frames, and the second supporting wheels are respectively connected with the second installation frames in a rotating mode.
Preferably, the second supporting ring and the second connecting piece are made of flexible materials with elasticity; preferably, the second support wheel is made of polyurethane or rubber material with elasticity and wear resistance.
Preferably, the cleaning mechanism comprises a toothed chain, a plurality of gears, a driving motor and a plurality of cleaning brushes, wherein the gears are circumferentially arranged outside the pipe body, the driving motor is connected with one of the gears and drives the gears to rotate, the toothed chain is arranged outside the gears and meshed with the gears, the cleaning brushes are circumferentially arranged outside the toothed chain, and the cleaning brushes are all connected with the toothed chain.
The invention provides a pipeline corrosion inhibitor film coating device, which is characterized in that gas is conveyed into a pipeline in the film coating process, the pipeline is driven to walk in the pipeline, in the operation process, a first supporting wheel and a second supporting wheel are always kept in close contact with the inner wall of the pipeline, a cleaning brush is also in contact with the inner wall of the pipeline and cleans the inner wall of the pipeline, the gas is introduced into an annular air cavity by a draught fan, an atomization nozzle sprays a corrosion inhibitor into a liquid spraying pipeline, and the corrosion inhibitor sprayed by the liquid spraying pipeline is spirally arranged outside the air flow when the gas comes out of the air spraying pipeline at one end of a spray pipe far away from the pipeline.
The corrosion inhibitor provided by the invention has the corrosion inhibition rate of more than 96% on a circulating water system with sodium chloride and calcium chloride solution as coolant, can form a super protective film on the metal surface in the equipment, prevents chloride ions and hydrogen ions from corroding stainless steel and carbon steel equipment, and greatly prolongs the service life of the equipment; the invention can also be used in chilled water (refrigerant liquid) systems such as ethylene glycol, propylene glycol, glycerol and methanol, and can effectively inhibit and eliminate equipment corrosion caused by ionized H+ in the running process of the ethylene glycol, propylene glycol, glycerol and methanol solution and inhibit the generation of bacteria to influence the efficiency of the system. After the invention is added, the freezing point of a chilled water (refrigerant liquid) system can be lowered by 2 to 3 ℃ besides the capability of efficiently inhibiting and eliminating H+ corrosion and inhibiting fungus growth, and the refrigeration effect is effectively improved.
Drawings
FIG. 1 is a schematic structural view of a pipeline corrosion inhibitor film coating device provided by the invention;
FIG. 2 is a schematic diagram of the structure of a pipe in a pipe corrosion inhibitor film coating device according to the present invention;
FIG. 3 is a schematic structural view of a first support mechanism in a pipeline corrosion inhibitor coating device according to the present invention;
FIG. 4 is a schematic structural view of a second support mechanism in a pipeline corrosion inhibitor coating device according to the present invention;
fig. 5 is a schematic structural view of a cleaning mechanism in a pipeline corrosion inhibitor film coating device.
Detailed Description
Referring to fig. 1-5, the invention provides a pipeline corrosion inhibitor film coating device, which comprises a pipe body 1, wherein a first supporting mechanism, a second supporting mechanism and a cleaning mechanism are sequentially arranged outside the pipe body 1 from a first end to a second end; wherein:
the solvent cavity 2 with corrosion inhibitor is arranged in the pipe body 1, the pipe body 1 is provided with a liquid injection port 3 and an air inlet 4 which are communicated with the solvent cavity 2, a sealing plug is arranged in the liquid injection port 3, a one-way air inlet valve is arranged in the air inlet 4, an annular air cavity 5 is arranged in the first end of the pipe body 1, an air inducing port 6 communicated with the annular air cavity 5 is arranged on the pipe body 1, an induced draft fan is arranged in the air inducing port 6, a plurality of spray pipes 7 which are vertically connected with the pipe body 1 are circumferentially arranged outside the first end of the pipe body 1, air injection channels 8 which are axially arranged along the spray pipes 7 are arranged in the spray pipes 7, the air injection channels 8 are communicated with the annular air cavity 5 through air guide channels 9, a liquid injection channel 10 which is spirally arranged around the air injection channels 8 is also arranged in the pipe body 1, a spiral central axis of the liquid injection channel 10 coincides with a central axis of the air injection channels 8, the liquid injection channel 10 is communicated with the solvent cavity 2, and an atomization nozzle is arranged at a joint of the liquid injection channel 10 and the solvent cavity 2.
The first supporting mechanism comprises a first supporting ring 11 and a plurality of first supporting wheels 12, the first supporting ring 11 is sleeved outside the pipe body 1, the central shaft of the first supporting ring 11 coincides with the central shaft of the pipe body 1, the first supporting ring 11 is connected with the outer wall of the pipe body 1 through a plurality of first connecting pieces 14, a plurality of first installation frames 13 are circumferentially arranged outside the first supporting ring 11, the plurality of first supporting wheels 12 are respectively arranged in one-to-one correspondence with the plurality of first installation frames 13, and the plurality of first supporting wheels 12 are respectively connected with the plurality of first installation frames 13 in a rotating mode. The first supporting ring 11 and the first connecting piece 14 are made of elastic soft materials, and the first supporting wheel 12 is made of elastic and wear-resistant polyurethane or rubber materials. In the process of coating, the plurality of first supporting wheels 12 are always in close contact with the inner wall of the pipeline 22, and as the first supporting rings 11 and the first connecting pieces 14 are made of elastic soft materials, the pipeline 22 can still pass smoothly at the reducing position.
The second supporting mechanism comprises a second supporting ring 15 and a plurality of second supporting wheels 16, the second supporting ring 15 is sleeved outside the pipe body 1, the central shaft of the second supporting ring 15 coincides with the central shaft of the pipe body 1, the second supporting ring 15 is connected with the outer wall of the pipe body 1 through a plurality of second connecting pieces 18, a plurality of second installation frames 17 are circumferentially arranged outside the second supporting ring 15, the second supporting wheels 16 are respectively arranged in one-to-one correspondence with the second installation frames 17, and the second supporting wheels 16 are respectively connected with the second installation frames 17 in a rotating mode. The second supporting ring 15 and the second connecting piece 18 are made of elastic soft materials, and the second supporting wheel 16 is made of elastic polyurethane or rubber materials with wear resistance. In the process of coating, the plurality of second supporting wheels 16 are always in close contact with the inner wall of the pipeline 22, and as the second supporting rings 15 and the second connecting pieces 18 are made of elastic soft materials, the pipeline 22 can still pass smoothly at the reducing position.
The cleaning mechanism comprises a toothed chain 19, a plurality of gears 20, a driving motor and a plurality of cleaning brushes 21, wherein the plurality of gears 20 are circumferentially arranged outside the pipe body 1, the driving motor is connected with one gear 20 and drives the gear 20 to rotate, the toothed chain 19 is arranged outside the plurality of gears 20 and meshed with the plurality of gears 20, the plurality of cleaning brushes 21 are circumferentially arranged outside the toothed chain 19, and the plurality of cleaning brushes 21 are all connected with the toothed chain 19. In the process of coating, the plurality of cleaning brushes 21 are always in close contact with the inner wall of the pipeline 22, and the diameter-changing part of the pipeline 22 can be deformed by the bristles of the cleaning brushes 21 so that the coating device can smoothly pass through.
In the process of coating, gas is conveyed into the pipeline 22 to push the invention to walk in the pipeline 22, in the running process, the first supporting wheel 12 and the second supporting wheel 16 are always in close contact with the inner wall of the pipeline 22, the cleaning brush 21 is also in contact with the inner wall of the pipeline 22 and cleans the inner wall of the pipeline 22, the induced draft fan introduces the gas into the annular air cavity 5, the atomizing nozzle sprays the corrosion inhibitor into the liquid spraying pipeline 10, and at one end of the spray pipe 7 far away from the pipe body 1, when the gas comes out from the air spraying pipeline 8, the corrosion inhibitor sprayed out from the liquid spraying pipeline 10 is spirally arranged outside the air flow, by the arrangement, the atomized corrosion inhibitor can be widely diffused and attached to the inner wall of the pipeline 22 to form a corrosion inhibitor protection film, so that chloride ions and hydrogen ions are prevented from corroding the pipeline 22, the service life of the pipeline 22 is greatly prolonged, the pipeline 22 has the capability of effectively inhibiting and eliminating H+ corrosion and inhibiting fungus growth after the refrigerant is added, and the freezing point of a freezing water (refrigerant liquid) system can be reduced by 2-3 ℃ to 3 ℃ so that the freezing point effect is effectively improved.
Example 1
The corrosion inhibitor used for the pipeline corrosion inhibitor coating device comprises the following raw materials in percentage by mass: 26.6% of trisodium phosphate, 36.7% of sodium tripolyphosphate, 8.1% of sodium hexametaphosphate, 12.2% of tetra sodium hydroxyethylidene diphosphate, 12.2% of urotropine, 0.81% of silicon dioxide, 0.81% of benzotriazole, 2.1% of molybdate and the balance of deionized water.
TABLE 1
| Project | Corrosion rate of | Unit (B) |
| Before adding | 12.36-15.63 | g/m 2 .h |
| After being added | 0.0015 | g/m 2 .h |
As can be seen from Table 1, the corrosion inhibitor proposed in example 1 has a remarkable corrosion inhibition effect.
Example 2
The corrosion inhibitor used for the pipeline corrosion inhibitor coating device comprises the following raw materials in percentage by mass: 21% of trisodium phosphate, 42% of sodium tripolyphosphate, 10.5% of sodium hexametaphosphate, 8.5% of tetra sodium hydroxy ethylidene diphosphate, 10% of urotropine, 0.5% of silicon dioxide, 0.5% of benzotriazole, 1% of molybdate and the balance of deionized water.
TABLE 2
| Project | Corrosion rate of | Unit (B) |
| Before adding | 12.36-15.63 | g/m 2 .h |
| After being added | 0.0011 | g/m 2 .h |
As can be seen from Table 2, the corrosion inhibitor proposed in example 2 has a remarkable corrosion inhibition effect.
Example 3
The corrosion inhibitor used for the pipeline corrosion inhibitor coating device comprises the following raw materials in percentage by mass: 31% of trisodium phosphate, 30% of sodium tripolyphosphate, 5.5% of sodium hexametaphosphate, 14.5% of tetra sodium hydroxy ethylidene diphosphate, 15% of urotropine, 1.5% of silicon dioxide, 1.5% of benzotriazole, 5% of molybdate and the balance of deionized water.
TABLE 3 Table 3
| Project | Corrosion rate of | Unit (B) |
| Before adding | 12.36-15.63 | g/m 2 .h |
| After being added | 0.00125 | g/m 2 .h |
As can be seen from Table 3, the corrosion inhibitor proposed in example 3 has a remarkable corrosion inhibition effect.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The pipeline corrosion inhibitor film coating device is characterized by comprising a pipe body (1), wherein a first supporting mechanism, a second supporting mechanism and a cleaning mechanism are sequentially arranged outside the pipe body (1) from a first end to a second end; the novel spray pipe is characterized in that a solvent cavity (2) filled with corrosion inhibitors is arranged inside the pipe body (1), a liquid injection port (3) and an air inlet (4) which are communicated with the solvent cavity (2) are formed in the pipe body (1), a sealing plug is arranged in the liquid injection port (3), a one-way air inlet valve is arranged in the air inlet (4), an annular air cavity (5) is arranged inside the first end of the pipe body (1), an air inducing port (6) communicated with the annular air cavity (5) is formed in the pipe body (1), an induced draft fan is arranged in the air inducing port (6), a plurality of spray pipes (7) which are vertically connected with the pipe body (1) are circumferentially arranged outside the first end of the pipe body (1), air spraying channels (8) which are axially arranged along the spray pipes are communicated with the annular air cavity (5) through air guide channels (9), a spiral arrangement channel (10) surrounding the air spraying channels (8) is further arranged in the pipe body (1), the spiral central axis of the liquid spraying channels (10) coincides with the central axis of the air spraying channels (8), and the liquid spraying channels (10) are communicated with the solvent cavity (2), and an atomization nozzle is arranged at the connection position of the solvent cavity (2);
the corrosion inhibitor comprises the following raw materials in percentage by mass: 21-31% of trisodium phosphate, 30-42% of sodium tripolyphosphate, 5.5-10.5% of sodium hexametaphosphate, 8.5-14.5% of hydroxy ethylidene tetrasodium diphosphate, 10-15% of urotropine, 0.5-1.5% of silicon dioxide, 0.5-1.5% of benzotriazole, 1-5% of molybdate and the balance of deionized water.
2. The corrosion inhibitor coating device according to claim 1, wherein the corrosion inhibitor raw materials comprise, in mass percent: 26.6% of trisodium phosphate, 36.7% of sodium tripolyphosphate, 8.1% of sodium hexametaphosphate, 12.2% of tetra sodium hydroxyethylidene diphosphate, 12.2% of urotropine, 0.81% of silicon dioxide, 0.81% of benzotriazole, 2.1% of molybdate and the balance of deionized water.
3. The corrosion inhibitor coating device according to claim 1, wherein the corrosion inhibitor raw materials comprise, in mass percent: 21% of trisodium phosphate, 42% of sodium tripolyphosphate, 10.5% of sodium hexametaphosphate, 8.5% of tetra sodium hydroxy ethylidene diphosphate, 10% of urotropine, 0.5% of silicon dioxide, 0.5% of benzotriazole, 1% of molybdate and the balance of deionized water.
4. The corrosion inhibitor coating device according to claim 1, wherein the corrosion inhibitor raw materials comprise, in mass percent: 31% of trisodium phosphate, 30% of sodium tripolyphosphate, 5.5% of sodium hexametaphosphate, 14.5% of tetra sodium hydroxy ethylidene diphosphate, 15% of urotropine, 1.5% of silicon dioxide, 1.5% of benzotriazole, 5% of molybdate and the balance of deionized water.
5. The corrosion inhibitor film coating device according to claim 1, wherein the first supporting mechanism comprises a first supporting ring (11) and a plurality of first supporting wheels (12), the first supporting ring (11) is sleeved outside the pipe body (1), the central axis of the first supporting ring (11) coincides with the central axis of the pipe body (1), the first supporting ring (11) is connected with the outer wall of the pipe body (1) through a plurality of first connecting pieces (14), a plurality of first mounting frames (13) are circumferentially arranged outside the first supporting ring (11), the plurality of first supporting wheels (12) are respectively in one-to-one correspondence with the plurality of first mounting frames (13), and the plurality of first supporting wheels (12) are respectively in rotary connection with the plurality of first mounting frames (13).
6. The corrosion inhibitor film coating device according to claim 5, wherein the first supporting ring (11) and the first connecting piece (14) are made of flexible materials with elasticity; the first support wheel (12) is made of polyurethane or rubber material with elasticity and wear resistance.
7. The corrosion inhibitor film coating device according to claim 1, wherein the second supporting mechanism comprises a second supporting ring (15) and a plurality of second supporting wheels (16), the second supporting ring (15) is sleeved outside the pipe body (1), the central axis of the second supporting ring (15) coincides with the central axis of the pipe body (1), the second supporting ring (15) is connected with the outer wall of the pipe body (1) through a plurality of second connecting pieces (18), a plurality of second mounting frames (17) are circumferentially arranged outside the second supporting ring (15), the plurality of second supporting wheels (16) are respectively arranged in one-to-one correspondence with the plurality of second mounting frames (17), and the plurality of second supporting wheels (16) are respectively connected with the plurality of second mounting frames (17) in a rotating mode.
8. The corrosion inhibitor film coating device according to claim 7, wherein the second supporting ring (15) and the second connecting piece (18) are made of flexible materials with elasticity; the second support wheel (16) is made of polyurethane or rubber material with elasticity and wear resistance.
9. The corrosion inhibitor film coating device according to claim 1, wherein the cleaning mechanism comprises a toothed chain (19), a plurality of gears (20), a driving motor and a plurality of cleaning brushes (21), the plurality of gears (20) are circumferentially arranged outside the pipe body (1), the driving motor is connected with one of the gears (20) and drives the gear (20) to rotate, the toothed chain (19) is arranged outside the plurality of gears (20) and is meshed with the plurality of gears (20), the plurality of cleaning brushes (21) are circumferentially arranged outside the toothed chain (19), and the plurality of cleaning brushes (21) are all connected with the toothed chain (19).
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| 周本省.6.磷酸盐、7.聚磷酸盐、8.有机多元膦酸.《工业水处理技术》.化学工业出版社,1997,第85-87页. * |
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