CN111646744A - Manufacturing method of tank bottom bearing heat insulation cushion block - Google Patents
Manufacturing method of tank bottom bearing heat insulation cushion block Download PDFInfo
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- CN111646744A CN111646744A CN202010377706.5A CN202010377706A CN111646744A CN 111646744 A CN111646744 A CN 111646744A CN 202010377706 A CN202010377706 A CN 202010377706A CN 111646744 A CN111646744 A CN 111646744A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/0845—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for smoothing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/47—Oils, fats or waxes natural resins
- C04B41/478—Bitumen, asphalt, e.g. paraffin
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
- C04B41/63—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a method for manufacturing a bearing heat-insulating cushion block at the bottom of a tank, which is characterized in that low-temperature-resistant high-strength metal is used as a keel structure, concrete with perlite as a main component is poured into the keel structure, and the bearing heat-insulating cushion block for the bottom of the tank is prepared through normal-temperature curing and high-temperature drying treatment.
Description
Technical Field
The invention belongs to the technical field of tank foundation heat preservation, and particularly relates to a method for manufacturing a tank bottom bearing heat insulation cushion block.
Background
In the development of modern chemical industry, due to increased competition, the chemical industry is developing to be larger and stronger, so that resource integration is caused, and only large-scale enterprises can better survive and develop, so that the scale of the low-temperature storage tank is increased, the large-scale low-temperature storage tank and the ultra-large-scale low-temperature storage tank have extremely high requirements on the performance of the heat insulation and cold preservation heat insulation material at the bottom of the tank, particularly the position of a ring beam bearing ring of the storage tank has extremely high requirements on the bearing and heat insulation performance of the material, particularly the bearing capacity, and in order to solve the problem, the invention provides the following technical scheme.
Disclosure of Invention
The invention aims to provide a method for manufacturing a bearing heat-insulating cushion block at the bottom of a tank.
The technical problems to be solved by the invention are as follows:
with the increasing scale of storage tanks, large-scale low-temperature storage tanks and ultra-large low-temperature storage tanks have high requirements on the performance of cold insulation and heat insulation materials at the bottoms of the tanks, particularly the position of a ring beam pressure-bearing ring of the storage tank has high requirements on the pressure-bearing and heat insulation performance of materials, and particularly the pressure-bearing capacity.
The purpose of the invention can be realized by the following technical scheme:
a method for manufacturing a bearing heat-insulating cushion block at the bottom of a tank comprises the following steps:
step one, preparing perlite concrete;
step two, binding and preparing a reinforcement cage, wherein the reinforcement cage is prepared from low-temperature-resistant high-strength metal, and the low-temperature-resistant high-strength metal comprises HRB500, 304 stainless steel, 304L stainless steel, invar steel and nine-nickel steel;
step three, manufacturing a mould, paving a flat and wrinkle-free waterproof layer at the bottom of the mould, and placing the reinforcement cage prepared in the previous step into the mould, wherein a plurality of heightening cushion blocks are arranged between the bottom of the mould and the reinforcement cage for heightening, and the thickness of the heightening cushion blocks is the thickness of a protective layer of a bearing heat-insulation cushion block at the bottom of the tank;
step four, after the hoisting connecting piece is fixed to the designed position, adding concrete into the mould, vibrating and tamping the concrete, leveling and polishing the upper plane, naturally solidifying for 3-12 hours, and then demoulding and surface-folding;
step five, watering and maintaining the cement blocks obtained in the step at regular intervals, wherein the maintenance period is 7 days, and performing natural air drying and maintenance after the watering and maintenance period is up to 21 days;
and step six, transferring the cement blocks which are cured in the step one to a drying oven, adjusting the heating rate to be 0.1-5 ℃/h, heating to 101-plus-energy 110 ℃, carrying out heat preservation treatment for 7 days, adjusting the cooling rate to be 0.1-5 ℃/h after the heat preservation is finished, cooling to 20-30 ℃, completing the drying treatment, polishing the surface of the dried concrete blocks to enable the surface of the product to be smooth, then coating a moisture-proof coating on the surface of the concrete blocks, and carrying out air drying on the coating to obtain the finished product of the tank bottom bearing heat insulation cushion block.
As a further scheme of the invention, the perlite concrete is prepared by processing the following raw materials in parts by weight: 6000 parts of cement, 120 parts of perlite, 60-250 parts of yellow sand, 1000 parts of water, 0.2-20 parts of plasticizer and 3-80 parts of water reducer.
As a further scheme of the invention, the perlite concrete is prepared by processing the following raw materials in parts by weight: 450 parts of cement, 260 parts of perlite, 160 parts of yellow sand, 380 parts of water, 0.9 part of plasticizer and 20 parts of water reducing agent.
As a further scheme of the invention, the perlite concrete is prepared by processing the following raw materials in parts by weight: 550 parts of cement, 200 parts of perlite, 250 parts of yellow sand, 470 parts of water, 1.1 parts of plasticizer and 20 parts of water reducing agent.
As a further scheme of the invention, the cement adopts 425 Portland cement;
the yellow sand adopts medium sand;
the perlite is prepared by mixing 70-90% by weight of perlite with the granularity of 2-3mm, 2-5% by weight of perlite with the granularity of less than or equal to 1mm and 0-25% by weight of perlite with the granularity of 3-4 mm.
As a further embodiment of the present invention, the plasticizer is prepared from sodium gluconate, sodium tartrate and sodium citrate according to a molar ratio of 1: 1: 1, mixing and preparing.
As a further scheme of the invention, the water reducing agent is one of a polycarboxylic acid water reducing agent, an aminosulfonate water reducing agent and a melamine formaldehyde condensate water reducing agent.
As a further scheme of the invention, the preparation method of the perlite concrete comprises the following steps:
s1, conveying the raw materials except water into a concrete mixer according to the weight ratio, stirring the dry materials for 3-5min without adding water, wherein the raw materials comprise perlite, cement, yellow sand, a water reducing agent and a plasticizer in sequence;
and S2, after the mixture is uniformly dry-mixed, adding water into the concrete mixer for mixing for 5-8min to obtain the perlite concrete.
As a further scheme of the invention, the preparation method of the heightening cushion block comprises the following steps:
pouring the concrete prepared in the step one into a mould, vibrating and tamping the concrete, performing surface closing treatment on the concrete exposed outside the mould, performing solidification curing for 3-12 hours, then demolding, and performing watering curing on the demolded cement block, wherein the curing period is 28 days, so as to obtain the heightening cushion block.
As a further scheme of the invention, the heightening cushion block can also be made of hard materials such as metal, concrete and the like;
as a further scheme of the invention, the moisture-proof coating is formed by painting cold bottom oil, and the using amount of the cold bottom oil is 3-5kg/m2。
The invention has the beneficial effects that:
according to the manufacturing method of the tank bottom bearing heat insulation cushion block, the tank bottom bearing heat insulation cushion block manufactured by the method has good compressive strength and low heat conductivity, can reduce heat exchange between a storage tank and the outside while guaranteeing the pressure bearing capacity of the tank bottom bearing heat insulation cushion block, and is suitable for being continuously screwed and applied in a large low-temperature storage tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for manufacturing a bearing heat-insulating cushion block at the bottom of a tank comprises the following steps:
step one, preparing perlite concrete;
binding to prepare a reinforcement cage, wherein the reinforcement cage is prepared from low-temperature-resistant high-strength metal, and the low-temperature-resistant high-strength metal is HRB 500;
step three, manufacturing a mould, paving a flat and wrinkle-free waterproof layer at the bottom of the mould, and placing the reinforcement cage prepared in the previous step into the mould, wherein a plurality of heightening cushion blocks are arranged between the bottom of the mould and the reinforcement cage for heightening, and the thickness of the heightening cushion blocks is the thickness of a protective layer of a bearing heat-insulation cushion block at the bottom of the tank;
step four, after the hoisting connecting piece is fixed to the designed position, adding concrete into the mould, vibrating and tamping the concrete by using a vibrating rod, leveling and polishing the upper plane, and naturally solidifying for 6 hours, and then demoulding and surface folding;
step five, watering and maintaining the cement blocks obtained in the step at regular intervals, wherein the maintenance period is 7 days, and performing natural air drying and maintenance after the watering and maintenance period is up to 21 days;
step six, transferring the cement blocks which are cured in the step one to a drying oven, adjusting the heating rate to be 0.5 ℃/h, heating to 101-plus-one temperature of 110 ℃, carrying out heat preservation treatment for 7 days, adjusting the cooling rate to be 0.5 ℃/h after the heat preservation is finished, cooling to 20 ℃, completing drying treatment, polishing the surface of the dried concrete blocks to enable the surface of the product to be flat and smooth, then brushing a moisture-proof coating on the surface of the concrete blocks, and carrying out air drying on the coating to obtain a finished product of tank bottom bearing heat insulation cushion block;
the moisture-proof coating is formed by brushing cold bottom oil, and the usage amount of the cold bottom oil is 4kg/m2；
The perlite concrete is prepared by processing the following raw materials in parts by weight: 450 parts of cement, 260 parts of perlite, 160 parts of yellow sand, 380 parts of water, 0.9 part of plasticizer and 20 parts of water reducing agent.
The cement is 425 Portland cement;
the perlite is prepared by mixing 80% by weight of perlite with the granularity of 2-3mm, 5% by weight of perlite with the granularity of less than or equal to 1mm and 15% by weight of perlite with the granularity of 3-4 mm;
the yellow sand adopts medium sand;
the plasticizer is prepared from sodium gluconate, sodium tartrate and sodium citrate according to a molar ratio of 1: 1: 1, mixing and preparing;
the water reducing agent is sodium sulfamate.
The preparation method of the perlite concrete comprises the following steps:
s1, conveying the raw materials except water into a concrete mixer according to the weight ratio, stirring the dry materials without adding water for 5min, wherein the raw materials comprise perlite, cement, yellow sand, a water reducing agent and a plasticizing agent in sequence;
and S2, after the mixture is uniformly dry-mixed, adding water into the concrete mixer for mixing for 6min to obtain the perlite concrete.
The preparation method of the heightening cushion block comprises the following steps:
pouring the concrete prepared in the step one into a mould, vibrating and tamping the concrete by using a vibrating rod, performing surface folding treatment on the concrete exposed outside the mould, performing solidification curing, demolding after solidification curing for 7 hours, and watering and curing the demolded cement block for 28 days to obtain the heightening cushion block.
Example 2
A method for manufacturing a bearing heat-insulating cushion block at the bottom of a tank comprises the following steps:
step one, preparing perlite concrete;
binding to prepare a reinforcement cage, wherein the reinforcement cage is prepared from low-temperature-resistant high-strength metal, and the low-temperature-resistant high-strength metal is HRB 500;
step three, manufacturing a mould, paving a flat and wrinkle-free waterproof layer at the bottom of the mould, and placing the reinforcement cage prepared in the previous step into the mould, wherein a plurality of heightening cushion blocks are arranged between the bottom of the mould and the reinforcement cage for heightening, and the thickness of the heightening cushion blocks is the thickness of a protective layer of a bearing heat-insulation cushion block at the bottom of the tank;
step four, after the hoisting connecting piece is fixed to the designed position, adding concrete into the mould, vibrating and compacting the concrete by using a vibrating rod, leveling and polishing the upper plane, naturally solidifying for 6 hours, and then demoulding and surface-folding;
step five, watering and maintaining the cement blocks obtained in the step at regular intervals, wherein the maintenance period is 7 days, and performing natural air drying and maintenance after the watering and maintenance period is up to 21 days;
step six, transferring the cement blocks which are cured in the step one to a drying oven, adjusting the heating rate to be 0.5 ℃/h, heating to 101-plus-one temperature of 110 ℃, carrying out heat preservation treatment for 7 days, after finishing heat preservation, polishing the surface of the dried concrete blocks to enable the surface of the product to be smooth, adjusting the cooling rate to be 0.5 ℃/h, cooling to 20 ℃, finishing drying treatment, then brushing a moisture-proof coating on the surface of the concrete, and carrying out air drying on the coating to obtain a finished product of the tank bottom bearing heat insulation cushion block;
the moisture-proof coating is formed by brushing cold bottom oil, and the usage amount of the cold bottom oil is 4kg/m2；
The perlite concrete is prepared by processing the following raw materials in parts by weight: 550 parts of cement, 200 parts of perlite, 250 parts of yellow sand, 470 parts of water, 1.1 parts of plasticizer and 20 parts of water reducing agent.
The cement is 425 Portland cement;
the perlite is prepared by mixing 80% by weight of perlite with the granularity of 2-3mm, 5% by weight of perlite with the granularity of less than or equal to 1mm and 15% by weight of perlite with the granularity of 3-4 mm;
the yellow sand adopts medium sand;
the plasticizer is prepared from sodium gluconate, sodium tartrate and sodium citrate according to a molar ratio of 1: 1: 1, and the water reducing agent is sodium sulfamate.
The preparation method of the perlite concrete comprises the following steps:
s1, conveying the raw materials except water into a concrete mixer according to the weight ratio, stirring the dry materials without adding water for 5min, wherein the raw materials comprise perlite, cement, yellow sand, a water reducing agent and a plasticizing agent in sequence;
and S2, after the mixture is uniformly dry-mixed, adding water into the concrete mixer for mixing for 6min to obtain the perlite concrete.
The preparation method of the heightening cushion block comprises the following steps:
pouring the concrete prepared in the step one into a mould, vibrating and tamping the concrete by using a vibrating rod, performing surface folding treatment on the concrete exposed outside the mould, performing solidification curing, demolding after solidification curing for 7 hours, and watering and curing the demolded cement block for 28 days to obtain the heightening cushion block.
Experimental results and analysis:
the wet density, the dry density, the compressive strength and the heat conductivity coefficient of the tank bottom bearing heat insulation cushion blocks prepared in the embodiments 1 and 2 are detected, and the specific results are shown in the table 1:
TABLE 1
| Detecting items | Wet density (kg/m)3) | Dry density (kg/m)3) | Compressive strength (MPa) | Thermal conductivity coefficient (W/M.K) |
| Example 1 | 1250 | 1000 | ≥5.5 | ≤0.25 |
| Example 2 | 1500 | 1250 | ≥8 | ≤0.28 |
As can be seen from the above table, the tank bottom load-bearing heat-insulating cushion block prepared by the preparation method of the invention has good compressive strength and good heat-insulating property.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (10)
1. The manufacturing method of the bearing heat-insulating cushion block at the bottom of the tank is characterized by comprising the following steps:
step one, preparing perlite concrete;
step two, binding and preparing a reinforcement cage, wherein the reinforcement cage is prepared from low-temperature-resistant high-strength metal, and the low-temperature-resistant high-strength metal comprises HRB500, 304 stainless steel, 304L stainless steel, invar steel and nine-nickel steel;
step three, manufacturing a mould, paving a flat and wrinkle-free waterproof layer at the bottom of the mould, and placing the reinforcement cage prepared in the previous step into the mould, wherein a plurality of heightening cushion blocks are arranged between the bottom of the mould and the reinforcement cage for heightening, and the thickness of the heightening cushion blocks is the thickness of a protective layer of a bearing heat-insulation cushion block at the bottom of the tank;
step four, after the hoisting connecting piece is fixed to the designed position, adding concrete into the mould, vibrating and compacting the concrete, leveling and polishing the upper plane, naturally solidifying for 3-12 hours, and then demoulding and surface-folding;
step five, watering and maintaining the cement blocks obtained in the step at regular intervals, wherein the maintenance period is 7 days, and performing natural air drying and maintenance after the watering and maintenance period is up to 21 days;
and step six, transferring the cement blocks which are cured in the step one to a drying oven, adjusting the heating rate to be 0.1-5 ℃/h, heating to 101-plus-one temperature of 110 ℃, carrying out heat preservation treatment for 7 days, adjusting the cooling rate to be 0.1-5 ℃/h after the heat preservation is finished, cooling to 20-30 ℃, completing the drying treatment, polishing and smoothing the surface of the dried concrete blocks, coating a moisture-proof coating on the surface of the concrete blocks, and carrying out air drying on the coating to obtain the finished product of the tank bottom bearing heat insulation cushion block.
2. The method for manufacturing the tank bottom load-bearing heat-insulation cushion block according to claim 1, wherein the perlite concrete is prepared by processing the following raw materials in parts by weight: 6000 parts of cement, 120 parts of perlite, 60-250 parts of yellow sand, 1000 parts of water, 0.2-20 parts of plasticizer and 3-80 parts of water reducer.
3. The method for manufacturing the tank bottom load-bearing heat-insulation cushion block according to claim 1, wherein the perlite concrete is prepared by processing the following raw materials in parts by weight: 450 parts of cement, 260 parts of perlite, 160 parts of yellow sand, 380 parts of water, 0.9 part of plasticizer and 20 parts of water reducing agent.
4. The method for manufacturing the tank bottom load-bearing heat-insulation cushion block according to claim 1, wherein the perlite concrete is prepared by processing the following raw materials in parts by weight: 550 parts of cement, 200 parts of perlite, 250 parts of yellow sand, 470 parts of water, 1.1 parts of plasticizer and 20 parts of water reducing agent.
5. The method for manufacturing a tank bottom load-bearing and heat-insulating cushion block according to claim 2, wherein the cement is 425 portland cement; the yellow sand adopts medium sand; the perlite is prepared by mixing 70-90% by weight of perlite with the granularity of 2-3mm, 2-5% by weight of perlite with the granularity of less than or equal to 1mm and 0-25% by weight of perlite with the granularity of 3-4 mm.
6. The method for manufacturing the pot bottom load-bearing heat-insulating cushion block according to claim 2, wherein the plasticizer is prepared from sodium gluconate, sodium tartrate and sodium citrate according to a molar ratio of 1: 1: 1, mixing and preparing.
7. The method for manufacturing the tank bottom bearing heat insulation cushion block according to claim 2, wherein the water reducing agent is one of a polycarboxylic acid water reducing agent, an aminosulfonate water reducing agent and a melamine formaldehyde condensate water reducing agent.
8. The method for manufacturing the tank bottom load-bearing heat-insulation cushion block according to claim 2, wherein the preparation method of the perlite concrete comprises the following steps:
s1, conveying the raw materials except water into a concrete mixer according to the weight ratio, stirring the dry materials for 3-5min without adding water, wherein the raw materials comprise perlite, cement, yellow sand, a water reducing agent and a plasticizer in sequence;
and S2, after the mixture is uniformly dry-mixed, adding water into the concrete mixer for mixing for 5-8min to obtain the perlite concrete.
9. The method for manufacturing the pot bottom bearing heat insulation cushion block according to claim 1, wherein the method for manufacturing the heightening cushion block comprises the following steps:
pouring the concrete prepared in the step one into a mould, vibrating and tamping the concrete, performing surface closing treatment on the concrete exposed outside the mould, performing solidification curing for 3-12 hours, then demolding, and performing watering curing on the demolded cement block, wherein the curing period is 28 days, so as to obtain the heightening cushion block.
10. A method for making a pot bottom load-bearing and heat-insulating pad according to claim 2, wherein said moisture-proof coating is made by painting cold primer oil, and the amount of cold primer oil used is 3-5kg/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377706.5A CN111646744B (en) | 2020-05-07 | 2020-05-07 | Manufacturing method of tank bottom bearing heat insulation cushion block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377706.5A CN111646744B (en) | 2020-05-07 | 2020-05-07 | Manufacturing method of tank bottom bearing heat insulation cushion block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111646744A true CN111646744A (en) | 2020-09-11 |
| CN111646744B CN111646744B (en) | 2022-04-12 |
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| CN202010377706.5A Active CN111646744B (en) | 2020-05-07 | 2020-05-07 | Manufacturing method of tank bottom bearing heat insulation cushion block |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204693030U (en) * | 2015-05-15 | 2015-10-07 | 华陆工程科技有限责任公司 | With cold insulation structure at the bottom of the low-temperature storage tank tank of water-proof function |
| CN109237293A (en) * | 2018-10-31 | 2019-01-18 | 中海石油气电集团有限责任公司 | Band liner whole concrete LNG full-capacity tank |
| CN110454677A (en) * | 2018-05-08 | 2019-11-15 | 中国石化工程建设有限公司 | For storing the full appearance tank with nonmetallic sealant of cryogenic media |
| CN110566026A (en) * | 2019-09-18 | 2019-12-13 | 东北石油大学 | Oversized heat-preservation storage tank with orthogonal cable beam as tank top and construction method |
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2020
- 2020-05-07 CN CN202010377706.5A patent/CN111646744B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204693030U (en) * | 2015-05-15 | 2015-10-07 | 华陆工程科技有限责任公司 | With cold insulation structure at the bottom of the low-temperature storage tank tank of water-proof function |
| CN110454677A (en) * | 2018-05-08 | 2019-11-15 | 中国石化工程建设有限公司 | For storing the full appearance tank with nonmetallic sealant of cryogenic media |
| CN109237293A (en) * | 2018-10-31 | 2019-01-18 | 中海石油气电集团有限责任公司 | Band liner whole concrete LNG full-capacity tank |
| CN110566026A (en) * | 2019-09-18 | 2019-12-13 | 东北石油大学 | Oversized heat-preservation storage tank with orthogonal cable beam as tank top and construction method |
Non-Patent Citations (1)
| Title |
|---|
| 董金道等: "膨胀珍珠岩混凝土的配制", 《硅酸盐建筑制品》 * |
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| CN111646744B (en) | 2022-04-12 |
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Denomination of invention: Fabrication method of load bearing thermal insulation cushion block at tank bottom Effective date of registration: 20221127 Granted publication date: 20220412 Pledgee: China Minsheng Bank Co.,Ltd. Jiaxing Branch Pledgor: ZHEJIANG ZHENSHEN INSULATION TECHNOLOGY Corp.,Ltd. Registration number: Y2022330003203 |
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Date of cancellation: 20230731 Granted publication date: 20220412 Pledgee: China Minsheng Bank Co.,Ltd. Jiaxing Branch Pledgor: ZHEJIANG ZHENSHEN INSULATION TECHNOLOGY Corp.,Ltd. Registration number: Y2022330003203 |
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Denomination of invention: A manufacturing method for load-bearing insulation pad at the bottom of a tank Effective date of registration: 20230804 Granted publication date: 20220412 Pledgee: China Minsheng Bank Co.,Ltd. Jiaxing Branch Pledgor: ZHEJIANG ZHENSHEN INSULATION TECHNOLOGY Corp.,Ltd. Registration number: Y2023330001656 |
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