CN113636230B - Heat preservation and outer anti-corrosion structure of buried tank - Google Patents
Heat preservation and outer anti-corrosion structure of buried tank Download PDFInfo
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- CN113636230B CN113636230B CN202010333282.2A CN202010333282A CN113636230B CN 113636230 B CN113636230 B CN 113636230B CN 202010333282 A CN202010333282 A CN 202010333282A CN 113636230 B CN113636230 B CN 113636230B
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- shell
- heat
- connecting pipe
- insulating
- buried tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/028—Wall construction hollow-walled, e.g. double-walled with spacers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
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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
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a heat preservation and external corrosion prevention structure of a buried tank, which comprises: the shell heat-insulation shell is arranged on the outer side of the buried tank body, a first gap is formed between the shell heat-insulation shell and the buried tank body, and the shell heat-insulation shell is connected with the buried tank body through a plurality of shell end plates; the shell sand injection ports are arranged on the shell heat-insulation shell and communicated with the first gap; the connecting pipe heat-preservation shell is arranged on the periphery of the connecting pipe, a second gap is formed between the connecting pipe heat-preservation shell and the connecting pipe, and the top end of the connecting pipe heat-preservation shell is connected with the outer wall of the connecting pipe through a connecting pipe end plate; the connecting pipe sand injection port is arranged on one side of the connecting pipe heat-insulation shell and communicated with the second gap; the heat-preservation filler is filled in the first gap and the second gap; the outer anti-corrosion layer is attached to the outer walls of the shell heat-insulating shell, the connecting pipe heat-insulating shell, the plurality of shell sand injection ports and the connecting pipe sand injection port; the heat preservation and the anticorrosion effects of the buried tank can be realized.
Description
Technical Field
The invention belongs to the technical field of petrochemical equipment, and particularly relates to a heat-preservation and external-corrosion-prevention structure of a buried tank.
Background
The buried tank is widely applied in the field of equipment such as petroleum and chemical engineering. When the buried tank with the heat preservation function is designed in engineering, because the operating temperature of the buried tank with the heat preservation function is higher than the normal temperature (20 ℃), on one hand, in order to maintain the temperature required by normal operation of the buried tank, external heat preservation needs to be arranged on the buried tank with the heat preservation function sometimes; on the other hand, external corrosion prevention (damp-proof corrosion prevention) is needed, and the temperature resistance of the external corrosion prevention material is generally not more than 80 ℃. In the current engineering design, the typical method for the heat insulation construction of heat insulation equipment is as follows: the outer wall surface of the equipment is wrapped by heat-insulating materials, then the heat-insulating materials are covered and tied by a heat-insulating outer skin, and the heat-insulating outer skin is generally galvanized iron sheet with the thickness of about 0.8 mm. If the heat-preservation buried tank is adopted, the external anticorrosive material (such as epoxy coal tar) cannot be effectively adhered to the heat-preservation outer skin; in addition, for the buried tank with heat preservation which does not require external heat preservation and has the operating wall temperature exceeding the tolerance temperature of external corrosion protection, the external corrosion protection is easy to melt, fall off and the like at high temperature.
Disclosure of Invention
The invention aims to provide a heat preservation and external corrosion prevention structure of a buried tank, which aims at overcoming the defects in the prior art, has structures such as a heat preservation shell, a connecting pipe heat preservation shell and the like, and can achieve the heat preservation and corrosion prevention effects of the buried tank for the buried tank needing external heat preservation and the buried tank not requiring external heat preservation but having an operating wall temperature exceeding the external corrosion prevention tolerance temperature.
In order to achieve the above object, the present invention provides a heat insulation and external corrosion prevention structure of a buried tank, comprising:
the shell heat-insulation shell is arranged on the outer side of the buried tank body, a first gap is formed between the shell heat-insulation shell and the buried tank body, and the shell heat-insulation shell is connected with the buried tank body through a plurality of shell end plates;
the shell sand injection ports are arranged on the shell heat-insulation shell and communicated with the first gap;
the connecting pipe heat-preservation shell is arranged on the periphery of the connecting pipe, a second gap is formed between the connecting pipe heat-preservation shell and the connecting pipe, and the top end of the connecting pipe heat-preservation shell is connected with the outer wall of the connecting pipe through a connecting pipe end plate;
the connecting pipe sand injection port is arranged on one side of the connecting pipe heat-insulating shell and communicated with the second gap;
the heat-preservation filler is filled in the first gap and the second gap;
and the outer anticorrosive layer is attached to the outer walls of the shell heat-insulating shell, the connecting pipe heat-insulating shell, the plurality of shell sand injection ports and the connecting pipe sand injection port.
Optionally, a plurality of first reinforcing ribs are arranged between the shell heat-insulating shell and the buried tank body.
Optionally, one end of the first reinforcing rib is connected with the shell heat-insulating shell, and the other end of the first reinforcing rib is in contact with the buried tank body.
Optionally, a plurality of second reinforcing ribs are arranged between the connecting pipe heat-insulating shell and the connecting pipe.
Optionally, one end of the second reinforcing rib is connected with the connecting pipe heat-insulating shell, and the other end of the second reinforcing rib is in contact with the connecting pipe.
Optionally, the upper ends of the plurality of shell sand injection ports are all arranged above the ground.
Optionally, the upper ends of the connecting pipe sand injection ports are all arranged above the ground.
Optionally, the ratio of the thickness of the first reinforcing rib to the thickness of the shell thermal insulation shell is between 0.5 and 2.
Optionally, the material of the heat preservation filler is pearl sand.
Optionally, the material of the outer anticorrosive layer is epoxy coal tar pitch.
The invention provides a heat preservation and external corrosion prevention structure of a buried tank, which has the beneficial effects that:
1. the buried tank has the advantages that the insulating shell and the shell sand injection port are arranged, insulating filler can be filled between the insulating shell and the buried tank body, the insulating requirement of the buried tank body is met, the temperature of the outer wall of the insulating shell is always lower than the tolerance temperature of the material of the outer anticorrosive layer, and the failure phenomena of melting, falling off and the like of the outer anticorrosive layer are avoided;
2. the connecting pipe heat-insulation shell and the connecting pipe sand injection port are arranged, heat-insulation filler can be filled between the connecting pipe heat-insulation shell and the connecting pipe, the heat-insulation requirement of the connecting pipe of the buried tank is met, the temperature of the outer wall of the connecting pipe heat-insulation shell is always lower than the tolerance temperature of the material of the outer anti-corrosion layer, and the failure phenomena of melting, falling and the like of the outer anti-corrosion layer are avoided;
3. have outer anticorrosive coating, can be to burying ground jar wholly carrying out dampproofing anticorrosion, improve and bury ground jar life.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic view of a buried tank insulation and external corrosion prevention structure according to an embodiment of the present invention.
Description of the reference numerals:
1. a buried tank body; 2. taking over a pipe; 3. a shell heat-insulating shell; 4. a housing end plate; 5. a sand injection port of the shell; 6. connecting a heat-insulating shell; 7. a pipe connecting end plate; 8. connecting a pipe and injecting sand; 9. an outer corrosion resistant layer; 10. a first reinforcing rib; 11. a second reinforcing rib; 12. and (5) insulating filler.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a heat preservation and external corrosion prevention structure of a buried tank, which comprises:
the shell heat-insulation shell is arranged on the outer side of the buried tank body, a first gap is formed between the shell heat-insulation shell and the buried tank body, and the shell heat-insulation shell is connected with the buried tank body through a plurality of shell end plates;
the shell sand injection ports are arranged on the shell heat-insulation shell and communicated with the first gap;
the connecting pipe heat-preservation shell is arranged on the periphery of the connecting pipe, a second gap is formed between the connecting pipe heat-preservation shell and the connecting pipe, and the top end of the connecting pipe heat-preservation shell is connected with the outer wall of the connecting pipe through a connecting pipe end plate;
the connecting pipe sand injection port is arranged on one side of the connecting pipe heat-insulating shell and communicated with the second gap;
the heat-preservation filler is filled in the first gap and the second gap;
and the outer anticorrosive layer is attached to the outer walls of the shell heat-insulating shell, the connecting pipe heat-insulating shell, the plurality of shell sand injection ports and the connecting pipe sand injection port.
Specifically, two ends of a shell end plate are respectively connected with a shell heat-insulating shell and a buried tank body so as to comprehensively determine a first gap, namely a subarea of an outer heat-insulating layer, according to factors such as the shape and the size of the buried tank body, the distribution condition of a connecting pipe and other external accessories welded on the buried tank body, the filling amount of heat-insulating filler and the like, and at least one shell sand injection port or connecting pipe sand injection port is arranged in each area and is used for filling the heat-insulating filler in the first gap and/or the second gap in the area; the number of the connecting pipe heat-preservation shells is the same as that of the connecting pipes, each connecting pipe heat-preservation shell wraps the periphery of each connecting pipe, and one side of each connecting pipe heat-preservation shell is provided with a connecting pipe sand injection port for filling heat-preservation filler into the second gap; the number of the connecting pipe end plates is equal to that of the connecting pipes, and the connecting pipe end plates are used for plugging the connecting pipe heat-preservation shell and the upper ends of the connecting pipes; the overall dimensions of the shell heat-insulating shell and the connecting pipe heat-insulating shell are determined according to the thickness of the heat-insulating filler layer of the buried tank and the overall dimension of the buried tank body; the thicknesses of the shell heat-insulating shell and the connecting pipe heat-insulating shell are determined by stability checking calculation when the shell heat-insulating shell and the connecting pipe heat-insulating shell bear buried external load; the reinforcing ribs are uniformly distributed at equal intervals, and the arrangement interval of the adjacent reinforcing ribs is comprehensively determined according to the external dimension of the buried tank and the thickness of the heat-insulating packing layer; the shell end plate and the connecting pipe end plate are as thick as the corresponding shell heat-insulating shell and connecting pipe heat-insulating shell, and the heights of the shell end plate and the connecting pipe end plate are determined according to the thickness of the heat-insulating packing layer; the number, the size and the positioning of the shell sand injection ports and the connecting pipe sand injection ports are comprehensively determined according to the filling amount of the heat insulation filler, the partition condition of the shell heat insulation shell, the distribution condition of the connecting pipes and the distribution condition of other external accessories welded on the buried tank body; the heat preservation filler filled in the first gap and the second gap can form a complete heat preservation filler layer at the periphery of the buried tank body, and the heat preservation and heat insulation effects are achieved.
Optionally, a plurality of first reinforcing ribs are arranged between the shell heat-insulating shell and the buried tank body.
Specifically, the arrangement of the first reinforcing rib can play a limiting and supporting role between the shell heat-insulating shell and the buried tank body.
Optionally, the one end of first strengthening rib is connected with casing insulation shell, and the other end contacts with burying ground jar body.
Specifically, first strengthening rib is connected with casing insulation housing only, and is not connected with burying ground jar body and only contacts.
Optionally, a plurality of second reinforcing ribs are arranged between the connecting pipe heat-insulating shell and the connecting pipe.
Specifically, the second reinforcing ribs can play a limiting and supporting role between the connecting pipe heat-insulating shell and the connecting pipe.
Optionally, one end of the second reinforcing rib is connected with the connecting pipe heat-insulating shell, and the other end of the second reinforcing rib is in contact with the connecting pipe.
Specifically, the second reinforcing rib is only connected with the connecting pipe heat-insulating shell and is not connected with the connecting pipe but only contacted with the connecting pipe.
Optionally, the upper ends of the plurality of shell sand injection ports are all arranged above the ground.
Optionally, the upper ends of the connecting pipe sand injection ports are all arranged above the ground.
Specifically, the upper ends of the shell sand injection port and the connecting pipe sand injection port are arranged above the ground, so that the heat-insulating filler can be conveniently injected.
Optionally, the ratio of the thickness of the first reinforcing rib to the thickness of the shell thermal insulation casing is between 0.5 and 2.
Optionally, the material of the heat preservation filler is pearl sand.
In other examples, the material of the insulating filler may also be hollow glass beads or ceramic hollow bead pigment filler, and the like, but is not limited thereto.
Optionally, the material of the outer anticorrosive layer is epoxy coal tar pitch.
In other examples, the material of the outer anticorrosive layer may also be, but is not limited to, an epoxy paint, an anticorrosive tape, or the like.
Examples
As shown in fig. 1, the present invention provides a heat preservation and external corrosion prevention structure of a buried tank, comprising:
the shell heat-insulation shell 3 is arranged on the outer side of the buried tank body 1, a first gap is formed between the shell heat-insulation shell and the buried tank body 1, and the shell heat-insulation shell 3 is connected with the buried tank body 1 through a plurality of shell end plates 4;
the shell sand injection ports 5 are arranged on the shell heat-insulation shell 3 and communicated with the first gap;
the connecting pipe heat-preservation shell 6 is arranged on the periphery of the connecting pipe 2, a second gap is formed between the connecting pipe heat-preservation shell and the connecting pipe 2, and the top end of the connecting pipe heat-preservation shell 6 is connected with the outer wall of the connecting pipe 2 through a connecting pipe end plate 7;
the connecting pipe sand injection port 8 is arranged on one side of the connecting pipe heat preservation shell 6 and communicated with the second gap;
the heat insulation filler 12 is filled in the first gap and the second gap;
and the outer anticorrosive layer 9 is attached to the outer walls of the shell heat-insulating shell 3, the connecting pipe heat-insulating shell 6, the plurality of shell sand injection ports 5 and the connecting pipe sand injection ports 8.
In this embodiment, a plurality of first reinforcing ribs 10 are provided between the shell thermal insulation casing 3 and the buried tank body 1.
In this embodiment, one end of the first reinforcing rib 10 is connected with the shell thermal insulation shell 3, and the other end is in contact with the buried tank body 1.
In this embodiment, a plurality of second reinforcing ribs 11 are arranged between the connecting pipe heat-insulating shell 6 and the connecting pipe 2.
In this embodiment, one end of the second reinforcing rib 11 is connected to the joint pipe heat-insulating housing 6, and the other end is in contact with the joint pipe 2.
In this embodiment, the upper ends of the 2 casing sand injection ports 5 are all disposed above the ground.
In the present embodiment, the upper ends of the connecting pipe sand injection ports 8 are all disposed above the ground.
In the present embodiment, the ratio of the thickness of the first rib 10 to the thickness of the case thermal insulation shell 3 is between 0.5 and 2.
In this embodiment, the material of the thermal insulation filler 12 is pearl sand.
In this embodiment, the material of the outer anticorrosive layer 9 is epoxy coal tar pitch.
In summary, when the heat preservation and external corrosion prevention structure of the buried tank provided by the invention is applied, the partition of the heat preservation shell is defined according to the shape, the size, the number and the distribution position of the connecting pipes 2 and the like of the buried tank body 1. In the embodiment, the buried tank body 1 has an inner diameter of 1600mm, a tangent length of 3000mm, a wall thickness of 30mm and a buried depth of 3000mm; according to engineering requirements, the heat-insulating filler 12 of the buried tank adopts pearl sand, the thickness of the heat-insulating filler layer is 100mm, so that the thickness of the first gap and the second gap is 100mm, and the height of the shell end plate 4 and the height of the connecting pipe end plate 7 are also 100mm. The inner diameter of the shell heat-insulating shell 3 is 1860mm, the tangent length is 3000mm, the wall thickness is 30mm, the thickness of the shell end plate 4 is 30mm, and the thickness of the connecting pipe end plate 7 is 30mm; the thickness of the first reinforcing ribs 10 is 30mm, and the first reinforcing ribs 10 are uniformly distributed at equal intervals of 300mm multiplied by 300 mm. The buried tank is characterized in that 2 connecting pipes 2 are arranged at the top of a buried tank body 1, the specifications of 2 connecting pipes 2 are phi 114.3x10.97, the inner diameter of a connecting pipe heat-insulating shell 6 is set to be 315mm, the wall thickness is 30mm, 4 second reinforcing ribs 11 are uniformly distributed around the middle part of each connecting pipe, and the thickness of each second reinforcing rib is 300mm; when 3 divisions of casing lagging casing, take over 2 and concentrate into 1 district, set up 2 and take over sand injection mouth 8 in this district, set up 1 casing end plate 4 in the middle of the surplus portion and divide into 2 districts, every district respectively sets up 1 casing sand injection mouth 5, divides 3 districts altogether, sets up 3 casing end plates 4 altogether. And pearl sand is filled in the first gap and the second gap through the shell sand injection port 5 and the connecting pipe sand injection port 8, so that the pearl sand is filled in 3 regions and 2 connecting pipes 2, and the heat insulation effect of the buried tank is ensured. Coating epoxy coal tar pitch layers on the outer walls of the shell heat-insulating shell 3 and the connecting pipe heat-insulating shell 6 to serve as outer anti-corrosion layers of the buried tank, so that the moisture-proof and anti-corrosion capacity of the buried tank is improved, and the service life is prolonged; the buried tank meets the requirements of heat preservation and external corrosion prevention outside the buried tank.
While embodiments of the present invention have been described above, the above description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The utility model provides a bury heat preservation and outer anticorrosive structure of ground jar, bury ground jar including burying ground jar body, bury and be provided with the takeover on the ground jar body, its characterized in that, heat preservation and outer anticorrosive structure include:
the shell heat-insulation shell is arranged on the outer side of the buried tank body, a first gap is formed between the shell heat-insulation shell and the buried tank body, and the shell heat-insulation shell is connected with the buried tank body through a plurality of shell end plates so as to realize the partition of the first gap;
the shell sand injection ports are arranged on the shell heat-insulation shell and communicated with the first gap;
the connecting pipe heat-preservation shell is arranged on the periphery of the connecting pipe, a second gap is formed between the connecting pipe heat-preservation shell and the connecting pipe, and the top end of the connecting pipe heat-preservation shell is connected with the outer wall of the connecting pipe through a connecting pipe end plate;
the connecting pipe sand injection port is arranged on one side of the connecting pipe heat-insulating shell and communicated with the second gap;
each zone is internally provided with at least one shell sand injection port or connecting pipe sand injection port;
the heat-preservation filler is filled in the first gap and the second gap;
and the outer anticorrosive layer is attached to the outer walls of the shell heat-insulating shell, the connecting pipe heat-insulating shell, the plurality of shell sand injection ports and the connecting pipe sand injection port.
2. The buried tank heat-insulating and external-anticorrosion structure as claimed in claim 1, wherein a plurality of first reinforcing ribs are arranged between the shell heat-insulating shell and the buried tank body.
3. The buried tank heat-insulating and external-anticorrosion structure as claimed in claim 2, wherein one end of the first reinforcing rib is connected with the heat-insulating shell of the shell, and the other end of the first reinforcing rib is in contact with the buried tank body.
4. The buried tank heat-insulating and external corrosion-preventing structure as claimed in claim 1, wherein a plurality of second reinforcing ribs are arranged between the connecting pipe heat-insulating shell and the connecting pipe.
5. The heat-insulating and external-corrosion-preventing structure of the underground tank as claimed in claim 4, wherein one end of the second reinforcing rib is connected to the heat-insulating shell of the connecting pipe, and the other end of the second reinforcing rib is in contact with the connecting pipe.
6. The underground tank heat-insulating and external corrosion-preventing structure as claimed in claim 1, wherein the upper ends of the plurality of shell sand injection ports are all arranged above the ground.
7. The buried tank heat-insulating and external-anticorrosion structure as claimed in claim 1, wherein the upper ends of the connecting pipe sand injection ports are all arranged above the ground.
8. The buried tank heat-insulating and external-anticorrosion structure as claimed in claim 2, wherein the ratio of the thickness of the first reinforcing rib to the thickness of the heat-insulating shell of the shell is between 0.5 and 2.
9. The buried tank heat-insulating and external-corrosion-preventing structure as claimed in claim 1, wherein the heat-insulating filler is made of pearl sand.
10. The buried tank heat-insulating and external anti-corrosion structure as claimed in claim 1, wherein the material of the external anti-corrosion layer is epoxy coal tar pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333282.2A CN113636230B (en) | 2020-04-24 | 2020-04-24 | Heat preservation and outer anti-corrosion structure of buried tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333282.2A CN113636230B (en) | 2020-04-24 | 2020-04-24 | Heat preservation and outer anti-corrosion structure of buried tank |
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| CN113636230A CN113636230A (en) | 2021-11-12 |
| CN113636230B true CN113636230B (en) | 2023-03-31 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2391851Y (en) * | 1999-11-01 | 2000-08-16 | 邓兴 | Double layer thermal insulation tank for transporting molten asphalt |
| CN207329359U (en) * | 2017-09-07 | 2018-05-08 | 安徽省福泰精细化工有限责任公司 | A kind of dimethoxym ethane production holding vessel of anti-leak |
| CN208746773U (en) * | 2018-07-30 | 2019-04-16 | 东莞市盛源石油化工有限公司 | A kind of shock proof SF bilayer refined oil storage tank |
| CN209705709U (en) * | 2019-04-25 | 2019-11-29 | 南京铁道职业技术学院 | A kind of railway transportation low-temperature storage-transport container |
| CN210120452U (en) * | 2019-08-13 | 2020-02-28 | 苏州联致盈精密机械有限公司 | Motor casing |
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