阅读说明：本技术 一种大型水轮发电机磁轭冲片无油防锈包装方法 (Oil-free rust-proof packaging method for large hydraulic generator magnetic yoke punching sheet ) 是由 周帅 徐善清 王子林 邓小民 苗旺 李鹏 李佳贺 于 2020-05-07 设计创作，主要内容包括：本发明公开一种大型水轮发电机磁轭冲片无油防锈包装方法,具有优异的防锈性能与防水防潮性能,能够在凝露、高温高湿较为恶劣的环境下保障大型水轮发电机磁轭冲片在运输与存放过程中的防锈效果；相对涂油防锈包装,无油防锈包装更加环保、清洁,磁轭冲片在电站免清洗,节省大量的清洗成本,拆开包装即可直接叠片安装,加快电站磁轭冲片安装效率。(The invention discloses an oil-free rust-proof packaging method for large-scale hydraulic generator magnetic yoke punching sheets, which has excellent rust-proof performance and waterproof and moistureproof performance and can ensure the rust-proof effect of the large-scale hydraulic generator magnetic yoke punching sheets in the transportation and storage processes under the severe environments of condensation, high temperature and high humidity; relative fat liquoring rust-resistant packing, oilless rust-resistant packing environmental protection more, clean, the yoke is exempted from at the power station to wash towards the piece, saves a large amount of cleaning costs, unpacks apart the packing and can directly the lamination installation for power station yoke towards piece installation effectiveness.)

1. An oil-free rust-proof packaging method for a large hydraulic generator magnetic yoke punching sheet is characterized by comprising the following steps: the method comprises the following steps:

1) cleaning the magnetic yoke punching sheet: cleaning the magnetic yoke punching sheet by adopting continuous cleaning and drying equipment and a water-based cleaning agent, wherein the cleaned magnetic yoke punching sheet is clean, dry, free of corrosion, free of oil stain, grease, sediment, sweat stain, fingerprint and residual trace after cleaning; the cleaning agent for cleaning the magnetic yoke punching sheet does not contain sulfide and chloride; the relative humidity of the environment is not higher than 85% in the cleaning process, the temperature of the base material of the punching sheet is higher than the dew point temperature of air by more than 3 ℃, the environment is clean, and dust flying is avoided;

2) stacking the magnetic yoke punching sheets: and (3) laying a layer of double-sided gas phase anti-rust paper on the magnetic yoke punching sheet stacking beat in advance, wherein the size of the gas phase anti-rust paper is larger than that of the magnetic yoke punching sheet, then laying a layer of double-sided gas phase anti-rust paper every 5 magnetic yoke punching sheets, stacking to 120 sheets, and then laying a layer of double-sided gas phase anti-rust paper on the last stacked magnetic yoke punching sheet. The relative humidity of the environment in the stacking process is not higher than 85%, the temperature of the base material of the punching sheet is higher than the dew point temperature of air by more than 3 ℃, and no dust flies;

3) and (3) winding and sealing the stretch film: tensioning and winding the stacked magnetic yoke punching sheets by using an antirust stretching film, and wrapping and sealing the magnetic yoke punching sheets; the relative humidity of the environment in the winding process is not higher than 85%, the temperature of the base material of the punching sheet is higher than the dew point temperature of air by more than 3 ℃, and no dust flies;

4) laying a buffer material and a packaging material: laying a rubber in advance on a batten, which is contacted with the packing box, of the magnetic yoke punching sheet, wherein the size of the rubber is larger than that of the batten contacted with the magnetic yoke punching sheet, no residual hard particulate matters are left on the surface of the rubber material, the packaging film is prevented from being damaged, and an aluminum foil composite film bag, a gas phase antirust film bag and a layer of gas phase antirust paper are sequentially placed;

5) bagging and fixing magnetic yoke punching sheets: integrally hoisting the stacked magnetic yoke punching sheets into a gas-phase antirust film bag and an aluminum foil composite film bag, and fixing the magnetic yoke punching sheets into a whole by utilizing a galvanized screw to penetrate through holes of the magnetic yoke punching sheets;

6) placing gas-phase antirust powder and allochroic silica gel drying agent: uniformly placing gas phase rust preventive powder in a non-woven fabric bag and a allochroic silica gel desiccant packaged by the non-woven fabric bag in the gas phase rust preventive film bag around the magnet yoke punching sheet;

7) vacuumizing, and sealing the gas phase anti-rust film in a heat seal manner, wherein the heat seal is continuous, no sealing leakage exists, the sealing width is uniform, and the sealing width is 5-10 mm;

8) vacuumizing, and sealing the aluminum foil composite film in a heat sealing manner, wherein the heat sealing is continuous, no sealing leakage exists, the sealing width is uniform, and the sealing width is 5-10 mm;

9) and integrally fixing the wood beam and the screw rod, and sealing the box.

Technical Field

The invention relates to the field of hydraulic generators, in particular to an oil-free rust-proof packaging method for a large hydraulic generator magnetic yoke punching sheet.

Background

The magnet yoke punching sheet is an important component of the hydraulic generator, and is very important for preventing corrosion in the transportation and storage processes. Because the transportation and storage time is longer, and the environment that the antirust quality is seriously influenced by condensation, high temperature and high humidity, rain, snow and the like can be experienced in the period, the magnet yoke punching sheet is generally subjected to antirust packaging in a mode of coating antirust oil on the surface, and the magnet yoke punching sheet is cleaned and degreased before the power station is stacked. Because the number of the magnetic yoke punching sheets of one hydraulic generator is huge, and a single magnetic yoke punching sheet of the large hydraulic generator is large and heavy, a large amount of manpower and material resources and a large amount of cleaning time are consumed for cleaning and degreasing the magnetic yoke punching sheets in a power station, the installation progress of the power station is seriously restricted, and the environment is polluted and unsafe factors exist. The adoption of a clean, oil-free and cleaning-free method for preventing rust of the magnetic yoke punching sheet is an urgent desire of a power station.

Disclosure of Invention

In order to solve the problems, the invention provides an oil-free rust-proof packaging method for a large hydraulic generator magnetic yoke punching sheet. The invention is realized by the following technical scheme:

(1) cleaning the magnetic yoke punching sheet: and the magnetic yoke punching sheet is cleaned by adopting continuous cleaning and drying equipment and a water-based cleaning agent, and the cleaned magnetic yoke punching sheet is clean, dry and free of corrosion, oil stain, grease, precipitate, sweat stain, fingerprint and residual trace after cleaning. The cleaning agent for cleaning the magnetic yoke punching sheet cannot contain sulfide and chloride. The relative humidity of the environment in the cleaning process is not higher than 85%, and the temperature of the punching sheet base material is higher than the dew point temperature of air by more than 3 ℃. The environment should be clean, no dust flies upward, and the cleanliness of the ambient air reaches normal cleanness.

(2) Stacking the magnetic yoke punching sheets: and (3) laying a layer of double-sided gas phase anti-rust paper on the magnetic yoke punching sheet stacking beat in advance, wherein the size of the gas phase anti-rust paper is larger than that of the magnetic yoke punching sheet, then laying a layer of double-sided gas phase anti-rust paper every 5 magnetic yoke punching sheets, stacking to 120 sheets, and then laying a layer of double-sided gas phase anti-rust paper on the uppermost surface. An operator must wear clean rubber gloves, and the pollution to the surface of the clean magnetic yoke punching sheet in the carrying process is avoided. The relative humidity of the environment in the stacking process is not higher than 85%, and the temperature of the punching sheet base material is higher than the dew point temperature of air by more than 3 ℃. The environment should be clean, no dust flies upward, and the cleanliness of the ambient air reaches normal cleanness.

(3) And (3) winding and sealing the stretch film: and tensioning, winding, wrapping and sealing the stacked magnetic yoke punching sheets by using an antirust stretching film. The relative humidity of the environment in the winding process is not higher than 85%, and the temperature of the punching sheet base material is higher than the dew point temperature of air by more than 3 ℃. The environment should be clean, no dust flies upward, and the cleanliness of the ambient air reaches normal cleanness.

(4) Laying a buffer material and a packaging material: and (3) laying a rubber in advance on the batten, in contact with the packing box, of the magnetic yoke punching sheet, wherein the size of the rubber is larger than that of the contact batten. Any hard particles can not be remained on the surface of the rubber sheet, so that the packaging film is prevented from being broken. Sequentially placing an aluminum foil composite film bag, a gas phase antirust film bag and a layer of gas phase antirust paper.

(5) Bagging and fixing magnetic yoke punching sheets: the stacked magnetic yoke punching sheets are integrally hung into the gas-phase antirust film bag and the aluminum foil composite film bag, and the magnetic yoke punching sheets are fixed into a whole by a galvanized screw penetrating through the holes of the magnetic yoke punching sheets, so that the packaging bag cannot be damaged in the fixing process.

(6) Placing gas-phase antirust powder and allochroic silica gel drying agent: and uniformly placing the gas phase rust preventive powder in the non-woven fabric bag and the allochroic silica gel desiccant packaged by the non-woven fabric bag in the gas phase rust preventive film bag around the magnet yoke punching sheet.

(7) Vacuumizing, and sealing the gas phase antirust film by heat sealing, wherein the heat sealing is continuous, no sealing leakage exists, the sealing width is uniform, and the sealing width is preferably 5-10 mm.

(8) Vacuumizing, and sealing the aluminum foil composite film by heat sealing, wherein the heat sealing is continuous, no sealing leakage exists, the sealing width is uniform, and the sealing width is preferably 5-10 mm.

(9) The wood beam and the screw are integrally fixed, so that the sealed packaging bag and the sealed box cannot be damaged.

Technical effects

The oil-free rust-proof packaging method for the large hydraulic generator yoke punching sheet has the advantages that rust-proof, moisture-proof and waterproof factors are taken into consideration, the rust-proof, moisture-proof and waterproof performances are good, and the rust-proof effect of the large hydraulic generator yoke punching sheet in the transportation and storage processes can be guaranteed under the relatively severe environments of condensation, high temperature, high humidity and the like. The invention has simple and clean operation and good application prospect.

The oil-free rust-proof package for the magnetic yoke punching sheets of the large hydraulic generator does not use rust-proof oil for rust prevention, so that the heavy work of coating and removing the rust-proof oil on the magnetic yoke punching sheets with heavy weight and huge number of single sheets is thoroughly saved, and the labor force is liberated. The packaging process is environment-friendly, clean, simple and convenient and high in efficiency because no antirust oil is used; the work of utilizing organic solvent to wash rust-preventive oil is removed from after the yoke punching piece is unpacked in the packaging process is removed in the power station, a large amount of cleaning cost is saved, the packaging is unpacked apart and the direct lamination installation can be carried out, so that the cleaning and oil removing work of the yoke punching piece of the large-scale hydraulic generator no longer becomes the restriction factor of the yoke punching piece installation, and the installation efficiency of the yoke punching piece of the power station is accelerated. Meanwhile, the problems of environmental pollution, harm to physical and mental health of operators and fire hazard are avoided because organic solvents are not used.

Detailed Description

The invention takes oil-free antirust package of a certain hydropower station magnetic yoke punching sheet as an example, and the specific packaging steps are as follows:

1) cleaning the magnetic yoke punching sheet: and (3) cleaning the magnetic yoke punching sheet by adopting continuous cleaning and drying equipment and a water-based cleaning agent, wherein the cleaned magnetic yoke punching sheet is clean, dry, free of corrosion, and free of any oil stain, grease, precipitate, sweat stain, fingerprint and cleaning residual trace. The cleaning agent for cleaning the magnetic yoke punching sheet cannot contain sulfide and chloride. The relative humidity of the environment in the cleaning process is not higher than 85%, and the temperature of the punching sheet base material is higher than the dew point temperature of air by more than 3 ℃. The environment should be clean, no dust flies upward, and the cleanliness of the ambient air reaches normal cleanness.

2) Stacking the magnetic yoke punching sheets: and (3) pre-laying a piece of double-sided gas phase anti-rust paper (the width is 1.2m) on the magnetic yoke punching sheet stacking bat, wherein the length of each piece of gas phase anti-rust paper is slightly larger than that of the magnetic yoke punching sheet, every 5 magnetic yoke punching sheets are pressed with one piece of double-sided gas phase anti-rust paper, and after the double-sided gas phase anti-rust paper is stacked to 120 pieces regularly, a piece of double-sided gas phase anti-rust paper is laid on the. An operator must wear clean rubber gloves, and the pollution to the surface of the clean magnetic yoke punching sheet in the carrying process is avoided. The magnet yoke punching sheet of the air-phase-sandwiched antirust paper can not be parked in the air for more than 4 hours. The relative humidity of the environment in the stacking process is not higher than 85%, and the temperature of the punching sheet base material is higher than the dew point temperature of air by more than 3 ℃. The environment should be clean, no dust flies upward, and the cleanliness of the ambient air reaches normal cleanness.

3) And (3) winding and sealing the stretch film: and (3) tensioning, winding, wrapping and sealing the stacked magnetic yoke punching sheets by using an antirust stretching film (the width is 500mm), and vacuumizing, heat-sealing and sealing by filling a gas-phase antirust film bag and an aluminum foil composite film bag in 36 hours. The relative humidity of the environment in the winding process is not higher than 85%, and the temperature of the punching sheet base material is higher than the dew point temperature of air by more than 3 ℃. The environment should be clean, no dust flies upward, and the cleanliness of the ambient air reaches normal cleanness.

4) Laying a buffer material and a packaging material: and laying a rubber sheet with the thickness of 5mm on the batten, which is contacted with the packing box, of the magnetic yoke punching sheet, wherein the size of the rubber sheet is larger than that of the contact batten. Any hard particles can not be remained on the surface of the rubber sheet, so that the packaging film is prevented from being broken. Sequentially placing an aluminum foil composite film bag (with a PET/AL/PA/PE four-layer structure, the film thickness is more than or equal to 140 μm), a gas phase antirust film bag and a layer of double-sided gas phase antirust paper.

5) Bagging and fixing magnetic yoke punching sheets: the stacked magnetic yoke punching sheets are integrally hung into the gas-phase antirust film bag and the aluminum foil composite film bag, and the magnetic yoke punching sheets are fixed into a whole by utilizing a galvanized screw penetrating through holes of the magnetic yoke punching sheets, so that the packaging bag cannot be damaged in the fixing process.

6) Placing gas-phase antirust powder and allochroic silica gel drying agent: 200g (10 bags, 20g per bag) of gas phase rust-proof powder in a non-woven fabric bag and 1.5kg of allochroic silica gel desiccant are uniformly placed around the magnetic yoke punching sheet in the gas phase rust-proof film bag, and the gas phase rust-proof powder and the allochroic silica gel desiccant cannot be stacked together;

7) vacuumizing, and sealing the gas-phase antirust film by heat sealing: carrying out heat seal on the gas-phase antirust film bag by using a hand vice type sealing machine, and reserving a vacuum-pumping port; and (4) vacuumizing the gas-phase antirust film bag by adopting a dust collector at a reserved vacuumizing port, and then immediately performing heat sealing.

8) Vacuumizing and sealing the aluminum foil composite membrane in a heat sealing way: performing heat seal sealing on the aluminum foil composite film bag by using a continuous crawler-type sealing machine, and reserving a vacuumizing port; and (4) vacuumizing the aluminum foil composite film bag by adopting a dust collector at a reserved vacuumizing port, and then immediately performing heat sealing.

9) The wood beam and the screw are integrally fixed, so that the sealed packaging bag and the sealed box cannot be damaged.