CN109630768B - Desulfurization spray pipeline and production process thereof - Google Patents

Desulfurization spray pipeline and production process thereof Download PDF

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Publication number
CN109630768B
CN109630768B CN201811644943.2A CN201811644943A CN109630768B CN 109630768 B CN109630768 B CN 109630768B CN 201811644943 A CN201811644943 A CN 201811644943A CN 109630768 B CN109630768 B CN 109630768B
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layer
branch pipe
arc
resin
mould
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CN109630768A (en
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赵博
蔡学军
陆越刚
蔡永涛
俞波
王伟玲
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Zhejiang Tuna Environmental Science and Technology Co Ltd
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Zhejiang Tuna Environmental Science and Technology Co Ltd
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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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/80—Semi-solid phase processes, i.e. by using slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/84—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/12—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe using attaching means embracing the pipe
    • 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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
    • 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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
    • 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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to the technical field of spray pipelines, in particular to a desulfurization spray pipeline, which comprises a main pipe and branch pipes, wherein the main pipe is connected with the branch pipes, the main pipe comprises a surface layer, a structural layer is arranged on the surface layer, a reinforcing layer is arranged between the structural layer and the branch pipes, and outer surfaces are arranged outside the structural layer and the reinforcing layer; the reinforcing layer comprises polyurethane rubber. The invention is manufactured by integrally manufacturing the main pipe and the branch pipe, and effectively improves the firmness of the joint of the main pipe and the branch pipe, thereby improving the practicability effect of the spray pipeline.

Description

Desulfurization spray pipeline and production process thereof
Technical Field
The invention relates to the technical field of spray pipelines, in particular to a desulfurization spray pipeline and a production process thereof.
Background
Power stations and industrial boilers typically use coal, oil or gas as fuel. Since these fuels generally contain sulfur components, harmful substances such as sulfur dioxide are generated during combustion. The limestone/lime-gypsum wet flue gas desulfurization device is widely used in large power station boilers for removing sulfur dioxide in flue gas after boiler combustion. Limestone/lime-gypsum wet flue gas desulfurization units require limestone or lime slurry as the absorbent to absorb sulfur dioxide from the flue gas. The limestone slurry is prepared by mixing limestone powder with a certain granularity and water, and the important step of wet flue gas desulfurization is to spray and wash the flue gas containing sulfur dioxide in an absorption tower by using the limestone slurry, so that the spray washing device is important equipment for wet flue gas desulfurization.
The existing spraying washing device is composed of a spraying pipe and nozzles, slurry is uniformly distributed in each nozzle through the distribution effect of the spraying pipe, is sprayed out of the nozzles and is fully contacted with flue gas flowing reversely, and sulfur dioxide pollution gas is absorbed at the position.
The Chinese patent publication No. CN1919422A discloses a spray pipe in the flue gas desulfurization process and a production method thereof, and discloses a spray pipe and a production process thereof. The spray pipe comprises a main pipe and branch pipes arranged on the main pipe, the main pipe is used for transporting and distributing slurry, and the branch pipes are provided with nozzles.
The above prior art solutions have the following drawbacks: the production process of the main pipe or the branch pipe of the shower pipe is disclosed, but how the main pipe and the branch pipe are installed and fixed is not described. In the prior art, the branch pipe is directly connected with the main pipe through resin and felt when the spray pipe is produced. By adopting the processing mode of the inserting pipe hand pasting, fatigue cracking can be caused by the phenomenon of vibration when the connecting part of the main pipe and the branch pipe is bent and guniting, because the pressure at the nozzle is not 0.07MPa, the mass of the nozzle is 8kg, the branch pipe works in a cantilever beam state, and the flowing of the grout is not smoothly flexibly connected. The main pipe and the branch pipe of the existing spray pipe are connected through a flange, and the flange is adopted for connection, so that the sealing performance is poor, and leakage is easy to occur; meanwhile, the flange is heavier, so that the weight of the spray pipe can be increased, and the supporting suspension force of the desulfurization tower on the spray pipe is increased.
Disclosure of Invention
The invention aims to provide a desulfurization spray pipeline and a production process thereof, which are characterized in that a main pipe and a branch pipe are integrally manufactured, and the firmness of the joint of the main pipe and the branch pipe is effectively improved, so that the practicability of the spray pipeline is improved.
The technical purpose of the invention is realized by the following technical scheme: a desulfurization spray pipeline comprises a main pipe and branch pipes, wherein the main pipe is connected with the branch pipes, the main pipe comprises a surface layer, a structural layer is arranged on the surface layer, a reinforcing layer is arranged between the structural layer and the branch pipes, and outer surfaces are arranged outside the structural layer and the reinforcing layer; the reinforcing layer comprises polyurethane rubber.
Through adopting above-mentioned technical scheme, install the enhancement layer between structural layer and branch pipe, the setting up of enhancement layer can improve the firm in connection nature of structural layer and branch pipe to improve the joint strength who is responsible for with the branch pipe. The liquid polyurethane rubber is convenient for the coating manufacturing of whole technology, and the polyurethane rubber who forms has characteristics such as hardness height, intensity is good, high wear resistance, tear-resistant, ageing-resistant to the fastness of enhancement layer made by polyurethane rubber not only effectively improves, can reduce the later stage moreover because of polyurethane rubber's ageing life who influences the shower.
The invention is further provided with: the outer surface layer close to one side of the structural layer is coated with a titanium alloy layer, the outer side wall of the branch pipe close to one end of the main pipe is coated with carbon fiber cloth, and a reinforcing layer is arranged between the titanium alloy layer and the carbon fiber cloth.
By adopting the technical scheme, a storage space of the reinforcing layer made of the polyurethane rubber can be formed between the titanium alloy layer and the carbon fiber cloth, so that the coating and the manufacturing of the liquid polyurethane rubber are facilitated. The titanium alloy layer has the characteristic of light weight, so that the whole mass of the spray pipe is not greatly improved by adding the titanium alloy layer, and the supporting suspension force of the desulfurization tower on the spray pipe is increased; meanwhile, the titanium alloy layer has high strength, good corrosion resistance and high heat resistance, so that the connection firmness between the main pipe and the branch pipe can be improved. The carbon fiber cloth can be laminated and is responsible for the processing of the shower of being convenient for with the junction of branch pipe, and carbon fiber cloth intensity is high, and density is little, and thickness is thin, does not increase basically that the reinforcement member is dead weight and cross sectional dimension, can effectively improve the firm in connection degree of being responsible for with the branch pipe simultaneously.
The invention is further provided with: graphene powder is adhered to the carbon fiber cloth.
Through adopting above-mentioned technical scheme, when coating liquid polyurethane rubber between titanium alloy layer and carbon fiber cloth, liquid polyurethane rubber can contact carbon fiber cloth, also can contact with the graphite alkene powder on the carbon fiber cloth when liquid polyurethane rubber contacts carbon fiber cloth, and graphite alkene powder can improve rubber strength and ductility to the setting of graphite alkene powder can improve polyurethane rubber and carbon fiber cloth's firm in connection degree, thereby improves the firm in connection degree of being responsible for with the branch pipe.
A production process of a desulfurization spray pipeline comprises the following steps:
(1) surface layer: fixing an FRP (fiber reinforced plastic) branch pipe on a mould, paving a surface felt on a mould pipeline outside the FRP branch pipe, coating resin on the surface felt, arranging the resin and the surface felt at intervals, brushing bubbles while removing the bubbles when coating the resin until the surface felt is transparent;
(2) reinforcing layer: a circle of titanium alloy sleeve is coated on the surface layer close to one side of the FRP branch pipe, and the titanium alloy sleeve consists of two inserted semicircular rings; coating carbon fiber cloth at the joint of the FRP branch pipe and the surface layer, and coating liquid polyurethane rubber between the carbon fiber cloth and the titanium alloy sleeve;
(3) structural layer: arranging a structural layer on the surface layer between two adjacent reinforcing layers, coating a layer of resin when the structural layer is arranged, laying cut chopped strand mats, and connecting the borders of two adjacent chopped strand mats; coating a layer of resin, laying the check cloth, and connecting two adjacent check cloths by lapping, so that the chopped strand mats and the check cloths are alternately laid in turn until the thickness of the structural layer is equal to that of the reinforcing layer;
(4) outer surface: arranging outer surfaces outside the reinforcing layer and the structural layer, coating a layer of resin on the outer surfaces, laying cut chopped strand mats, and connecting adjacent chopped strand mats in a lap joint manner; and coating a layer of resin, paving the check cloth, and connecting two adjacent check cloths by lapping so as to alternately lay the chopped strand mats and the check cloth in turn and finally manufacture the desulfurization spray pipeline.
Through adopting above-mentioned technical scheme, limit brush during coating resin is caught up with the bubble simultaneously, and until transparent as leading, the production of bubble can make the resin produce the cavity when the cooling is stereotyped, and the cavity can directly influence the structural firmness who is responsible for itself, consequently can not appear the bubble when coating resin.
The invention is further provided with: gaps exist on the interfaces of the upper chopped strand mat layer and the lower chopped strand mat layer or the check cloth layer in the step (3) and the step (4).
By adopting the technical scheme, the thickness of the overlapping interface of the two layers of chopped strand mats or the check cloth can be larger than that of the chopped strand mats or the check cloth, so that the upper and lower layers of overlapping interfaces can not be overlapped when the main pipe is manufactured, and need to be staggered according to the overlapping interfaces, so that the inner diameter and the outer diameter of the whole main pipe are consistent, and the phenomenon that the inner diameter and the outer diameter of the local main pipe are overlarge to influence the quality of a spray pipe can be avoided.
The invention is further provided with: the resin in the step (1) is prepared from the following raw materials in percentage by mass:
Figure BDA0001931873570000051
by adopting the technical scheme, the inner side wall of the main pipe is manufactured in the step (1), lime slurry is transported in the main pipe in the using process, and the lime slurry is alkaline and has certain corrosivity. The inner side wall formed by mixing the epoxy resin and the vinyl ester resin has an anti-corrosion effect, so that the influence on the service life of the main pipe caused by the corrosion of the lime slurry when the main pipe is used for conveying the lime slurry can be reduced. The polyurethane powder binder can improve the binding power and tensile strength of the chopped strand mat or the check cloth, thereby improving the mechanism firmness of the main pipe. Graphene can improve rubber strength and ductility, and when the enhancement layer was coated on the surface layer, the intraformational graphene of surface can contact with polyurethane rubber to improve the firm in connection degree of surface layer and enhancement layer. When the main pipe conveys lime slurry, a certain amount of aqueous solution is left in the main pipe, the aqueous solution contains calcium hydroxide, the calcium hydroxide is stored in the air and contacted with carbon dioxide in the air to generate calcium carbonate, and the generated calcium carbonate is accumulated on the inner side wall of the main pipe, so that the flow of the inner side wall of the main pipe is influenced. The silica nano particles have certain hydrophobicity, so that the main pipe is not easy to adhere aqueous solution on the inner side wall of the main pipe when lime slurry is conveyed, and the influence of calcium carbonate deposits formed on the inner side wall of the main pipe on the flow speed of the main pipe is reduced.
The invention is further provided with: the resin in the step (3) and the step (4) is prepared from the following raw materials in percentage by mass:
Figure BDA0001931873570000061
through adopting above-mentioned technical scheme, what the lateral wall direct contact of being responsible for is the flue gas, has the sulphur dioxide that needs desulfurization in the flue gas, and sulphur dioxide and moisture contact in the air can react and generate sulphuric acid, and sulphuric acid has certain corrosivity, and it also has the anticorrosion effect consequently has to the lateral wall that epoxy and vinyl ester resin mix and form to can reduce to be responsible for and receive the corruption of sulphuric acid and influence the life who is responsible for in the flue gas. The polyurethane powder binder can improve the binding power and tensile strength of the chopped strand mat or the check cloth, thereby improving the mechanism firmness of the main pipe. Graphene can improve rubber strength and ductility, and when coating the surface on the enhancement layer, graphene in the surface can contact with polyurethane rubber to improve the firm in connection degree of surface and enhancement layer. The active silicon micro powder has the characteristics of good temperature resistance, acid and alkali corrosion resistance, high hardness and the like, so that the corrosion resistance of the outer side wall of the main pipe can be improved by adding the active silicon micro powder, and the hardness of the main pipe can be improved. The addition of palm fibres also increases the strength of the main pipe.
The invention is further provided with: the die in the step (1) is arranged on processing equipment, the processing equipment comprises a base, two supporting plates are rotatably arranged on the base, die connecting mechanisms are arranged on opposite surfaces of the two supporting plates, and the die is connected with the supporting plates through the die connecting mechanisms; install first regulating plate between the backup pad of mould one side, be close to mould one side seted up branch pipe positioning groove on the first regulating plate, two of mould opposite side install the second regulating plate between the backup pad, be close to mould one side also seted up branch pipe positioning groove on the second regulating plate, install the branch pipe in the branch pipe positioning groove, the branch pipe other end supports tightly with the mould.
Present desulfurization spray piping is at the course of working, when beginning fixed FRP branch pipe, needs artificial fixed FRP branch pipe, then will show to lay on the mould pipeline in the FRP branch pipe outside the felt, scribbles the resin on the felt at the table, and resin and table set up the multilayer at the felt interval, just can loosen the FRP branch pipe when the resin is with the FRP branch pipe with show to adhere together on the mould on the felt, get into next processing. By adopting the processing mode, the accuracy of the positioning of the branch pipe of the desulfurization spray pipe cannot be accurately ensured, the processing efficiency is lower, and colleagues often need to be matched by a plurality of people at the same time.
Through adopting above-mentioned technical scheme, because the setting of processing equipment, can realize mechanized fixed, not only improve the accuracy of the branch pipe location of desulfurization shower, effectively improve machining efficiency moreover. When the processing equipment is used, one end of the branch pipe can be abutted against the mold, and the other end of the branch pipe is arranged in the branch pipe positioning groove of the first adjusting plate or the second adjusting plate, so that the branch pipe does not need to be fixed artificially. Because the two supporting plates are rotatably arranged on the base, after the branch pipe is fixed, the two supporting plates can rotate by taking the axial lead of the mould as a rotating center, so that the felt and the resin can be arranged on the peripheral side of the mould at the later stage.
The invention is further provided with: a first sliding groove is formed in the supporting plate on one side of the die connecting mechanism, a first adjusting plate is slidably mounted in the first sliding groove, a first air cylinder is mounted on the supporting plate close to the first sliding groove, and a piston rod of the first air cylinder penetrates through the first sliding groove to be connected with the first adjusting plate; the mould coupling mechanism opposite side the second spout has been seted up in the backup pad, slidable mounting has the second regulating plate in the second spout, is close to the second spout install the second cylinder in the backup pad, the piston rod of second cylinder passes the second spout and links to each other with the second regulating plate.
Through adopting above-mentioned technical scheme, the setting up of first cylinder can drive first regulating plate and slide in first spout to adjust the interval between first regulating plate and the mould, thereby be fit for installing the branch pipe of different length between first regulating plate and mould. The setting of second cylinder can drive the second regulating plate and slide in the second spout to adjust the interval between second regulating plate and the mould, thereby be fit for installing the branch pipe of different length between second regulating plate and the mould.
The invention is further provided with: a branch pipe positioning assembly is installed in the branch pipe positioning groove and comprises a first clamping positioning block and a second clamping positioning block, a first arc-shaped storage groove is formed in the first clamping positioning block, a first arc-shaped adjusting plate is installed in the first arc-shaped storage groove, and a first spring is installed between the first arc-shaped storage groove and the first arc-shaped adjusting plate; a second arc-shaped storage groove is formed in the second clamping and positioning block, a second arc-shaped adjusting plate is arranged in the second arc-shaped storage groove, and a second spring is arranged between the second arc-shaped storage groove and the second arc-shaped adjusting plate; and locking bolts are arranged on the first adjusting plate and the second adjusting plate and penetrate through the first adjusting plate or the second adjusting plate to be tightly abutted against the first clamping positioning block or the second clamping positioning block.
Through adopting above-mentioned technical scheme, because first arc regulating plate has the flexible space in first arc storage recess, second arc regulating plate has the flexible space in second arc storage recess, consequently first arc regulating plate and second arc regulating plate can the centre gripping branch pipe of different diameters. The locking bolts can be fixedly connected with the first clamping and positioning block or the second clamping and positioning block and the first adjusting plate or the second adjusting plate, so that the installation firmness of the branch pipe and the first adjusting plate or the second adjusting plate is guaranteed.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) the arrangement of the reinforcing layer can improve the connection firmness of the structural layer and the branch pipe, so that the connection strength of the main pipe and the branch pipe is improved;
(2) the addition of the titanium alloy layer does not greatly improve the overall quality of the spray pipe, and the supporting suspension force of the desulfurization tower on the spray pipe is increased; meanwhile, the titanium alloy layer has high strength, good corrosion resistance and high heat resistance, so that the connection firmness between the main pipe and the branch pipe can be improved; the carbon fiber cloth has high strength, small density and thin thickness, the self weight and the section size of the reinforcing member are not basically increased, and the connection firmness of the main pipe and the branch pipe can be effectively improved;
(3) the inner side wall formed by mixing the epoxy resin and the vinyl ester resin has an anti-corrosion effect, so that the influence on the service life of the main pipe caused by the corrosion of the lime slurry when the main pipe is used for conveying the lime slurry can be reduced.
Drawings
FIG. 1 is a schematic structural view of a desulfurization spray pipe;
FIG. 2 is a schematic view of the structure of the processing apparatus;
FIG. 3 is a partial cross-sectional view of the processing tool;
fig. 4 is a partially enlarged schematic view of a in fig. 2.
Reference numerals: 1. a branch pipe; 2. a surface layer; 3. a structural layer; 4. an outer surface; 5. a reinforcing layer; 6. carbon fiber cloth; 7. a titanium alloy layer; 11. a base; 12. a support plate; 13. a first adjusting plate; 14. a branch pipe positioning groove; 15. a second adjusting plate; 16. a first chute; 17. a first cylinder; 18. a second chute; 19. a second cylinder; 21. a first clamping and positioning block; 22. a second clamping and positioning block; 23. a first arcuate storage recess; 24. a first arc-shaped adjusting plate; 25. a first spring; 26. a second arcuate storage recess; 27. a second arc-shaped adjusting plate; 28. a second spring; 29. and locking the bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the desulfurization spraying pipeline comprises a main pipe and an FRP branch pipe 1, wherein the main pipe is connected with the FRP branch pipe 1.
Be responsible for including superficial layer 2, be provided with structural layer 3 on superficial layer 2, the cladding has titanium alloy layer 7 outside superficial layer 2 near structural layer 3 one side, and the cladding has carbon cloth 6 on the FRP branch pipe 1 lateral wall near being responsible for one end, adheres to graphene powder on carbon cloth 6.
A reinforcing layer 5 is arranged between the titanium alloy layer 7 and the carbon fiber cloth 6, and the reinforcing layer 5 is composed of polyurethane rubber.
The outer surface 4 is arranged outside the structural layer 3 and the reinforcing layer 5.
A production process of a desulfurization spray pipeline comprises the following steps:
(1) surface layer: fixing an FRP branch pipe 1 on a mould, paving a surface felt on a mould pipeline outside the FRP branch pipe 1, coating resin on the surface felt, arranging the resin and the surface felt at intervals, brushing bubbles while coating the resin until the resin is transparent;
(2) reinforcing layer: a circle of titanium alloy sleeve is coated on the surface layer close to one side of the FRP branch pipe 1, and the titanium alloy sleeve consists of two inserted semicircular rings; the joint of the FRP branch pipe 1 and the surface layer 2 is coated with carbon fiber cloth 6, and liquid polyurethane rubber is coated between the carbon fiber cloth 6 and the titanium alloy sleeve;
(3) structural layer: a structural layer 3 is arranged on the surface layer between two adjacent reinforcing layers 5, a layer of resin is coated when the structural layer 3 is arranged, cut chopped strand mats are laid, and two adjacent chopped strand mats are connected in a lap joint mode; coating a layer of resin, paving the check cloth, connecting two adjacent check cloths in a lap joint manner, and forming gaps on the lap joint surfaces of the upper chopped strand mat and the lower chopped strand mat or the check cloth, so that the chopped strand mats and the check cloth are alternately paved in sequence until the thickness of the structural layer is equal to that of the reinforcing layer 5;
(4) outer surface: arranging an outer surface 4 outside the reinforcing layer 5 and the structural layer 3, coating a layer of resin when arranging the outer surface 4, laying cut chopped strand mats, and connecting adjacent chopped strand mats in a boundary joint manner; coating a layer of resin, paving the check cloth, connecting two adjacent check cloths by lapping, and forming a gap on the lapping surface of the upper and lower layers of chopped strand mats or the check cloths; so as to alternately lay the chopped strand mats and the check cloth in turn and finally manufacture the desulfurization spray pipeline.
The resin in the step (1) is prepared from the following raw materials in percentage by mass:
Figure BDA0001931873570000111
the resin in the step (3) and the step (4) is prepared from the following raw materials in percentage by mass:
Figure BDA0001931873570000112
as shown in fig. 2, the mold in step (1) is installed on a processing device, the processing device includes a base 11, the base 11 is connected to support plates 12 through a rotating shaft 33, mold connection mechanisms are installed on opposite surfaces of the two support plates 12, each connection mechanism includes a support frame 31 shaped like L, one end of each support frame 31 is fixedly installed on one support plate 12, the other end of each support frame 31 penetrates through the mold, a locking nut 32 is installed on each support frame 31 penetrating through the mold, and each locking nut 32 is in threaded connection with each support frame 31.
As shown in fig. 3, a driving motor 41 is installed on the base 11, a first driving wheel 42 is installed on a motor shaft of the driving motor 41, a second driving wheel 43 is installed on the rotating shaft 33, and a driving chain 44 is installed on the first driving wheel 42 and the second driving wheel 43.
Install first regulating plate 13 between two backup pads 12 of mould one side, seted up branch pipe positioning groove 14 on the first regulating plate 13 that is close to mould one side, install second regulating plate 15 between two backup pads 12 of mould opposite side, also seted up branch pipe positioning groove 14 on the second regulating plate 15 that is close to mould one side, install the branch pipe in the branch pipe positioning groove 14, the branch pipe other end supports tightly with the mould.
A first sliding chute 16 is formed in the supporting plate 12 on one side of the supporting frame 31, a first adjusting plate 13 is slidably mounted in the first sliding chute 16, a first air cylinder 17 is mounted on the supporting plate 12 close to the first sliding chute 16, and a piston rod of the first air cylinder 17 passes through the first sliding chute 16 to be connected with the first adjusting plate 13; a second sliding groove 18 is formed in the supporting plate 12 on the other side of the supporting frame 31, a second adjusting plate 15 is slidably mounted in the second sliding groove 18, a second air cylinder 19 is mounted on the supporting plate 12 close to the second sliding groove 18, and a piston rod of the second air cylinder 19 penetrates through the second sliding groove 18 to be connected with the second adjusting plate 15.
As shown in fig. 4, a branch pipe positioning assembly is installed in the branch pipe positioning groove 14, the branch pipe positioning assembly includes a first clamping and positioning block 21 and a second clamping and positioning block 22, a first arc-shaped storage groove 23 is formed on the first clamping and positioning block 21, a first arc-shaped adjusting plate 24 is installed in the first arc-shaped storage groove 23, and a first spring 25 is installed between the first arc-shaped storage groove 23 and the first arc-shaped adjusting plate 24; a second arc-shaped storage groove 26 is formed in the second clamping and positioning block 22, a second arc-shaped adjusting plate 27 is arranged in the second arc-shaped storage groove 26, and a second spring 28 is arranged between the second arc-shaped storage groove 26 and the second arc-shaped adjusting plate 27; the first adjusting plate 13 and the second adjusting plate 15 are provided with locking bolts 29, and the locking bolts 29 penetrate through the first adjusting plate 13 or the second adjusting plate 15 to be tightly abutted against the first clamping and positioning block 21 or the second clamping and positioning block 22.
Examples 2-5 differ from example 1 in that the resin of step (1) has the following composition in percent by mass:
Figure BDA0001931873570000131
examples 6-9 differ from example 1 in that the resin of step (3) and step (4) has the following composition in percent by mass:
Figure BDA0001931873570000132
Figure BDA0001931873570000141
comparative example
Comparative example 1 is different from example 1 in that silica nanoparticles in the raw materials of the synthetic resin in the step (1) are replaced with epoxy resin.
Detection method
The hydrophobic properties were compared by taking a 10cm × 10cm sample of the resin synthesized in example 1 and in step (1) of comparative example 1, pouring 10ml of deionized water onto the surface of the sample under the control of the external conditions, then shaking the sample twice with an equal amount of force, and observing and measuring the area of the remaining adhered water on the surface of the sample.
Figure BDA0001931873570000142
And (4) conclusion: as can be seen from the above table, the area of adhered water on the surfaces of the samples of comparative example 1 and example 1 is significantly smaller in example 1 than in comparative example 1, and the difference between example 1 and comparative example 1 is that silica nanoparticles are added to the resin, indicating that the silica nanoparticles increase the hydrophobic ability of the resin, thereby limiting the adhesion of water on the surface of the resin.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. A desulfurization spray pipeline comprises a main pipe and branch pipes (1), wherein the main pipe is connected with the branch pipes (1), and is characterized in that the main pipe comprises a surface layer (2), a structural layer (3) is arranged on the surface layer (2), a reinforcing layer (5) is arranged between the structural layer (3) and the branch pipes (1), and outer surfaces (4) are arranged outside the structural layer (3) and the reinforcing layer (5); the reinforcing layer (5) is made of polyurethane rubber.
2. The desulfurization spray manifold of claim 1, wherein: the outer side of the surface layer (2) close to one side of the structural layer (3) is coated with a titanium alloy layer (7), the outer side wall of the branch pipe (1) close to one end of the main pipe is coated with carbon fiber cloth (6), and a reinforcing layer (5) is arranged between the titanium alloy layer (7) and the carbon fiber cloth (6).
3. A desulfurization spray manifold in accordance with claim 2, wherein: graphene powder is adhered to the carbon fiber cloth (6).
4. A process for the production of a desulfurization spray line according to any one of claims 1 to 3, characterized by comprising the steps of:
(1) surface layer: fixing an FRP (fiber reinforced plastic) branch pipe (1) on a mould, paving a surface felt on a mould pipeline on the outer side of the FRP branch pipe (1), coating resin on the surface felt, arranging the resin and the surface felt at intervals, brushing bubbles while coating the resin until the surface felt is transparent;
(2) reinforcing layer: a circle of titanium alloy sleeve is coated on the surface layer close to one side of the FRP branch pipe, and the titanium alloy sleeve consists of two inserted semicircular rings; the joint of the FRP branch pipe (1) and the surface layer (2) is coated with carbon fiber cloth (6), and liquid polyurethane rubber is coated between the carbon fiber cloth (6) and the titanium alloy sleeve to form a reinforcing layer (5);
(3) structural layer: a structural layer (3) is arranged on the surface layer (2) between two adjacent reinforcing layers (5), a layer of resin is coated when the structural layer (3) is arranged, cut chopped strand mats are laid, and two adjacent chopped strand mats are connected in a boundary joint manner; coating a layer of resin again, laying the check cloth, and connecting two adjacent check cloths by lapping, so that the chopped strand mats and the check cloth are alternately laid in turn until the thickness of the structural layer (3) is equal to that of the reinforcing layer (5);
(4) outer surface: arranging an outer surface (4) outside the reinforcing layer (5) and the structural layer (3), coating a layer of resin when arranging the outer surface (4), laying cut chopped strand mats, and connecting adjacent chopped strand mats in a boundary joint; and coating a layer of resin, paving the check cloth, and connecting two adjacent check cloths by lapping so as to alternately lay the chopped strand mats and the check cloth in turn and finally manufacture the desulfurization spray pipeline.
5. The production process of the desulfurization spray pipeline according to claim 4, characterized in that: gaps exist on the interfaces of the upper chopped strand mat layer and the lower chopped strand mat layer or the check cloth layer in the step (3) and the step (4).
6. The production process of the desulfurization spray pipeline according to claim 4, characterized in that: the resin in the step (1) is prepared from the following raw materials in percentage by mass:
Figure FDA0002517206770000021
7. the production process of the desulfurization spray pipeline according to claim 4, characterized in that: the resin in the step (3) and the step (4) is prepared from the following raw materials in percentage by mass:
Figure FDA0002517206770000031
8. the production process of the desulfurization spray pipeline according to claim 4, characterized in that: the die in the step (1) is arranged on processing equipment, the processing equipment comprises a base (11), two supporting plates (12) are rotatably arranged on the base (11), die connecting mechanisms are arranged on opposite surfaces of the two supporting plates (12), and the die is connected with the supporting plates (12) through the die connecting mechanisms; two of mould one side install first regulating plate (13) between backup pad (12), be close to mould one side branch positioning groove (14) have been seted up on first regulating plate (13), two of mould opposite side install second regulating plate (15) between backup pad (12), be close to mould one side branch positioning groove (14) have also been seted up on second regulating plate (15), install the branch pipe in branch positioning groove (14), the branch pipe other end supports tightly with the mould.
9. The production process of the desulfurization spray pipeline according to claim 8, characterized in that: a first sliding groove (16) is formed in the supporting plate (12) on one side of the die connecting mechanism, a first adjusting plate (13) is installed in the first sliding groove (16) in a sliding mode, a first air cylinder (17) is installed on the supporting plate (12) close to the first sliding groove (16), and a piston rod of the first air cylinder (17) penetrates through the first sliding groove (16) to be connected with the first adjusting plate (13); mould coupling mechanism opposite side second spout (18) have been seted up on backup pad (12), slidable mounting has second regulating plate (15) in second spout (18), is close to second spout (18) install second cylinder (19) on backup pad (12), the piston rod of second cylinder (19) passes second spout (18) and links to each other with second regulating plate (15).
10. The production process of the desulfurization spray pipeline according to claim 8, characterized in that: a branch pipe positioning assembly is installed in the branch pipe positioning groove (14), the branch pipe positioning assembly comprises a first clamping and positioning block (21) and a second clamping and positioning block (22), a first arc-shaped storage groove (23) is formed in the first clamping and positioning block (21), a first arc-shaped adjusting plate (24) is installed in the first arc-shaped storage groove (23), and a first spring (25) is installed between the first arc-shaped storage groove (23) and the first arc-shaped adjusting plate (24); a second arc-shaped storage groove (26) is formed in the second clamping and positioning block (22), a second arc-shaped adjusting plate (27) is arranged in the second arc-shaped storage groove (26), and a second spring (28) is arranged between the second arc-shaped storage groove (26) and the second arc-shaped adjusting plate (27); install locking bolt (29) on first regulating plate (13) and second regulating plate (15), locking bolt (29) pass first regulating plate (13) or second regulating plate (15) and first centre gripping locating piece (21) or second centre gripping locating piece (22) support tightly.
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CN100392306C (en) * 2006-05-30 2008-06-04 栗小锋 Glass fiber reinforced plastic sprinkling tube for desulfurizing tower of electric power plant and preparation method thereof
CN200948403Y (en) * 2006-09-14 2007-09-19 浙江德创环保科技有限公司 Spraying tube
CN201482415U (en) * 2009-09-08 2010-05-26 大连胜达环保设备有限公司 Spray apparatus of coal-fired boiler desulfurizing tower
JP5984712B2 (en) * 2013-02-25 2016-09-06 三菱日立パワーシステムズ株式会社 Exhaust gas treatment system and exhaust gas treatment method
CN204079488U (en) * 2014-09-02 2015-01-07 江苏中兴化工设备有限公司 Sulfuric acid absorption tower spray piping device
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CN207042232U (en) * 2017-07-17 2018-02-27 维达护理用品（中国）有限公司 A kind of anticorrosion desulfurization tower spray pipe

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