CN111036511A - Method for coating ship cabin - Google Patents
Method for coating ship cabin Download PDFInfo
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- CN111036511A CN111036511A CN201911132006.3A CN201911132006A CN111036511A CN 111036511 A CN111036511 A CN 111036511A CN 201911132006 A CN201911132006 A CN 201911132006A CN 111036511 A CN111036511 A CN 111036511A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
Abstract
The invention discloses a method for coating a ship cabin, which comprises the following steps: confirming the total spraying amount of the spraying paint and the thinner and the maximum spraying planning time required by the cabin; obtaining the required minimum spraying amount in unit time according to the total spraying amount and the maximum spraying planning time; the specification of the type-selecting spraying gun and the number of the spraying guns which are arranged to work simultaneously are calculated, and the estimated spraying amount of all the arranged spraying guns in unit time is calculated, so that the estimated spraying amount is larger than the minimum spraying amount; calculating the minimum ventilation volume in unit time according to the estimated spraying volume, the diluent type and the planned value for preventing organic solvent poisoning; selecting the type of the fan and arranging the number of the fans, so that the estimated ventilation of the arranged fans in unit time is greater than the minimum ventilation; and spraying after the fan is arranged. The method has the beneficial effect that the air volume calculation method which is more in line with the actual requirements on the site is formulated according to the actual spraying part, the spraying coating and the actual number of the spraying guns before spraying.
Description
Technical Field
The invention belongs to the technical field of ship building, and particularly relates to a ship cabin coating method.
Background
From the ship structure, a ship is composed of various closed limited spaces such as a ballast tank, an oil tank, a fresh water tank, a fuel tank, an empty tank and the like from top to bottom, in the ship construction process, each closed space cabin needs to be coated and painted, toxic, harmful, flammable and explosive operation environments are easily generated, meanwhile, interchamber spaces and cross operation in the process exist in the ship manufacturing process, inert gases such as CO, H2S and the like are retained in the cabins, and due to slight negligence or violation of rules in the construction operation, safety and death accidents such as burning, explosion, poisoning and the like can be caused, and casualties and property loss are caused. Therefore, aiming at different working conditions of the closed cabin in site construction in the ship coating construction process, a convenient and accurate ventilation quantity demand calculation method is needed on site, effective ventilation of the closed cabin is realized, and toxic and harmful substances, flammable and combustible gases generated in the coating operation process can be eliminated and diluted through ventilation while a safe construction environment is created, so that the concentration of the combustible gases is reduced, fresh air is conveyed, and the operation environment is improved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a ship cabin coating method, and partial embodiments of the invention can meet the requirements of different working conditions in the ship construction process, provide a calculation method of the ventilation rate of closed cabin coating construction, effectively reduce the concentration of toxic and harmful substances in construction operation places, reduce the concentration content of flammable and explosive gases, and meet the requirements of national relevant standards.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of coating a marine vessel cabin, the method comprising: confirming the total spraying amount of the spraying paint and the thinner and the maximum spraying planning time required by the cabin; obtaining the required minimum spraying amount in unit time according to the total spraying amount and the maximum spraying planning time; the specification of the type-selecting spraying gun and the number of the spraying guns which are arranged to work simultaneously are calculated, and the estimated spraying amount of all the arranged spraying guns in unit time is calculated, so that the estimated spraying amount is larger than the minimum spraying amount; calculating the minimum ventilation volume in unit time according to the estimated spraying volume, the diluent type and the planned value for preventing organic solvent poisoning; selecting the type of the fan and arranging the number of the fans, so that the estimated ventilation of the arranged fans in unit time is greater than the minimum ventilation; and spraying after the fan is arranged.
Preferably, the total amount of spray is equal to the product of the rated amount of spray and the application factor.
Preferably, the coating factor is 1.9 for ballast tanks, 2.4 for cabin, 1.5 for oil tanks and 1.9 for other compartments, depending on the compartment type.
Preferably, the estimated spray amount of a spray gun per unit time is equal to the product of the theoretical spray amount of the spray gun per unit time and the spray efficiency.
Preferably, the minimum ventilation is equal to the product of the estimated spraying amount, the diluent type coefficient and the organic solvent poisoning prevention planning value.
Preferably, the planned value for preventing organic solvent poisoning is 0.6-0.8.
Compared with the prior art, the invention has the beneficial effects that: the invention discloses a method for calculating the ventilation in the coating operation construction process in the space of a 23000TEU ship-shaped closed cabin, and the method for calculating the ventilation which is more in line with the actual requirements on the site is formulated according to the actual coating part, the coating and the actual number of paint spraying guns before the coating.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, the present embodiment provides a method for coating a ship cabin, the method comprising: confirming the total spraying amount of the spraying paint and the thinner and the maximum spraying planning time required by the cabin; obtaining the required minimum spraying amount in unit time according to the total spraying amount and the maximum spraying planning time; the specification of the type-selecting spraying gun and the number of the spraying guns which are arranged to work simultaneously are calculated, and the estimated spraying amount of all the arranged spraying guns in unit time is calculated, so that the estimated spraying amount is larger than the minimum spraying amount; calculating the minimum ventilation volume in unit time according to the estimated spraying volume, the diluent type and the planned value for preventing organic solvent poisoning; selecting the type of the fan and arranging the number of the fans, so that the estimated ventilation of the arranged fans in unit time is greater than the minimum ventilation; and spraying after the fan is arranged.
The total amount of spray is equal to the product of the spray rating and the application factor.
The coating factor is 1.9 for ballast, 2.4 for cabin, 1.5 for oil and 1.9 for the other cabins, depending on the cabin type.
The estimated spray quantity of a spray gun per unit time is equal to the product of the theoretical spray quantity of the spray gun per unit time and the spray efficiency.
The minimum ventilation is equal to the product of the estimated spraying amount, the diluent type coefficient and the planning value for preventing organic solvent poisoning.
The planned value for preventing organic solvent poisoning is 0.6-0.8.
Preferably, another embodiment provides a method for calculating the coating ventilation rate of the closed cabin of the 23000TEU ship, which comprises the following steps:
step 1, checking coating parameters such as coating construction degree, paint type, solvent type, corresponding spraying quota and the like for a closed cabin to be subjected to coating construction;
and 2, calculating the required lowest ventilation quantity according to the spraying amount of the coating under the condition of the coating operation environment, selecting proper types of fans and proper quantities, preventing organic solvent poisoning, accelerating the circulation of flammable and explosive gases and improving the coating and spraying operation environment.
Step 3, estimating the actual spraying amount in production according to the spraying process quota of the spraying part and the spraying coating coefficient;
in step 4, the required ventilation per minute of the cabin is calculated according to the estimated actual spraying amount:
Q＝k*w*x
q is the ventilation volume required per minute;
x is a numerical value in the organic solvent poisoning prevention plan, and is generally 0.6-0.8;
w is the amount of coating sprayed per hour (ml/H);
k: the solvent type coefficient is that the first solvent k is 0.2m3/ml, and the second solvent k is 0.03m 3/ml;
the method for calculating the amount of paint sprayed per hour comprises the following steps: the spray gun nozzle flow per minute (l/min) spray time (h) spray efficiency.
And 5, selecting the corresponding large-scale fan models and the fan number according to the calculated lowest ventilation quantity requirement, and meeting the operation environment required by spraying of the ship sealed cabin.
And 6, effectively ventilating the air blower of the type selection in the space of the closed cabin, and arranging and air suction bell mouths of the air pipe are placed at dead angles of the closed cabin, so that the air is more favorable for negative pressure to generate flow and is convenient for ventilation.
The information about the coating process in the step 1 is determined by specific construction project drawings.
The spraying and coating coefficient in the step 2 is an empirical coefficient, and the ship type is 1.9 in a ballast tank, 2.4 in a cabin, 1.5 in an oil tank and 1.9 in other cabins under the conventional condition.
The spray gun nozzle in the method for calculating the spraying amount per hour in the step 3 is usually 17B25 type, namely 1.7 liters/min of spraying flow, and the spraying efficiency is 0.92.
Preferably, the pressure of the paint spraying pump is 0.15-0.25Mpa, the paint output pressure is 7.6-9.7Mpa, the spraying speed of the spraying gun is 60-80cm/s, and the nozzle of the spraying gun is a 17B25 type nozzle.
Another embodiment discloses a cabin ventilation amount calculation method for 23000TEU ship # 1 cargo tank painting operation environment, which comprises the following steps:
step 1, after the 1# lubricating oil cabin folding welding line and the cabin damage part are ground and derusted, high-pressure airless spraying operation can be carried out according to the process requirements.
And 2, spraying 0WMART aluminum oxide red of Zondon paint company according to the requirement of a construction process for the No. 1 lubricating oil cabin, wherein the film thickness is 160 mu m, the spraying rated amount is 574L, the actual required spraying amount is 574 x 1.9 and is about 1090L according to an empirical coefficient, the diluent is Zondon No. 2 diluent, the diluent rated amount is 63L, the diluent belongs to a first class of solvent, and the planning value for preventing organic solvent poisoning is 0.8.
Step 3, the pressure of a selected paint spraying pump is 0.15-0.25Mpa, the paint output pressure is 7.6-9.7Mpa, the spraying speed of a spraying gun is 60-80cm/s, a 17B25 type nozzle is adopted as a nozzle of the spraying gun, and the length of a belt of the paint spraying pump is 25-30 m;
and 4, arranging 2 paint spray guns when the cabin is actually sprayed, wherein the paint spraying amount per hour is as follows: 2, 1.7, 60, 0.92, 187L of spraying can be calculated and sprayed every hour, 5 hours of spraying is expected to be needed, and the lowest ventilation requirement required to be met during the construction period of the closed cabin is calculated through spraying amount spraying.
And 6, calculating a ventilation formula according to the actual spraying amount of the cabin, and calculating the lowest ventilation requirement required to be met during the construction period of the closed cabin.
And 7, calculating ventilation Q (0.2 (187/60) × 0.8 × (103) ═ 498 (m) according to the actual spraying amount of the cabin3/min)。
Step 8, according to the spraying dosage of the cabin, the requirement per minute is required to meet 480m3The requirement of air volume consequently considers cabin structure complexity, chooses 5 of 2PS fans for use, leads to every corner in the cabin respectively with the tuber pipe, carries out effective ventilation.
And 9, after ventilation, the gunner correctly wears the labor protection articles and enters the cabin for painting. .
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (6)
1. A method of coating a marine vessel cabin, the method comprising:
confirming the total spraying amount of the spraying paint and the thinner and the maximum spraying planning time required by the cabin; obtaining the required minimum spraying amount in unit time according to the total spraying amount and the maximum spraying planning time;
the specification of the type-selecting spraying gun and the number of the spraying guns which are arranged to work simultaneously are calculated, and the estimated spraying amount of all the arranged spraying guns in unit time is calculated, so that the estimated spraying amount is larger than the minimum spraying amount;
calculating the minimum ventilation volume in unit time according to the estimated spraying volume, the diluent type and the planned value for preventing organic solvent poisoning;
selecting the type of the fan and arranging the number of the fans, so that the estimated ventilation of the arranged fans in unit time is greater than the minimum ventilation;
and spraying after the fan is arranged.
2. The method of coating a marine cabin of claim 1, wherein the total amount of spray coating is equal to a product of a rated amount of spray coating and a coating factor.
3. The method of coating ship's cabins according to claim 2, characterized in that the coating coefficients are according to the type of cabin, the ballast tank is 1.9, the cabin is 2.4, the oil tank is 1.5, and the other cabins are 1.9.
4. The method of claim 3 wherein the estimated spray amount per unit time for a spray gun is equal to the product of the theoretical spray amount per unit time and the spray efficiency for the spray gun.
5. The method of claim 4, wherein the minimum ventilation is equal to a product of an estimated spraying amount, a diluent type coefficient and a planned value for preventing organic solvent poisoning.
6. The method for coating ship cabins according to claim 5, wherein the organic solvent poisoning prevention plan value is 0.6 to 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911132006.3A CN111036511A (en) | 2019-11-19 | 2019-11-19 | Method for coating ship cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911132006.3A CN111036511A (en) | 2019-11-19 | 2019-11-19 | Method for coating ship cabin |
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| Publication Number | Publication Date |
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| CN111036511A true CN111036511A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911132006.3A Pending CN111036511A (en) | 2019-11-19 | 2019-11-19 | Method for coating ship cabin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069844A (en) * | 2020-08-27 | 2020-12-11 | 北京市汽车解体厂有限公司 | Ventilation method, ventilation device, electronic equipment and computer readable storage medium |
| CN116265132A (en) * | 2021-12-16 | 2023-06-20 | 包头北方创业有限责任公司 | Method for treating surface of workpiece |
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| CN107127123A (en) * | 2016-02-29 | 2017-09-05 | 中航鼎衡造船有限公司 | Cargo hold paint application technique |
| CN109332111A (en) * | 2018-10-31 | 2019-02-15 | 上海江南长兴造船有限责任公司 | One kind being used for the big packaging paint spraying method of LNG ship ballast tank |
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2019
- 2019-11-19 CN CN201911132006.3A patent/CN111036511A/en active Pending
Patent Citations (3)
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| CN104772264A (en) * | 2014-01-10 | 2015-07-15 | 中集集团集装箱控股有限公司 | Container coating process |
| CN107127123A (en) * | 2016-02-29 | 2017-09-05 | 中航鼎衡造船有限公司 | Cargo hold paint application technique |
| CN109332111A (en) * | 2018-10-31 | 2019-02-15 | 上海江南长兴造船有限责任公司 | One kind being used for the big packaging paint spraying method of LNG ship ballast tank |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069844A (en) * | 2020-08-27 | 2020-12-11 | 北京市汽车解体厂有限公司 | Ventilation method, ventilation device, electronic equipment and computer readable storage medium |
| CN112069844B (en) * | 2020-08-27 | 2024-03-01 | 北京市汽车解体厂有限公司 | Ventilation method, ventilation device, electronic equipment and computer readable storage medium |
| CN116265132A (en) * | 2021-12-16 | 2023-06-20 | 包头北方创业有限责任公司 | Method for treating surface of workpiece |
| CN116265132B (en) * | 2021-12-16 | 2024-02-09 | 包头北方创业有限责任公司 | Method for treating surface of workpiece |
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