Cable support on marine low-temperature liquid cargo storage tank

Abstract

The utility model discloses a cable support on a marine low-temperature liquid cargo storage tank, which is mounted in an insulation heat preservation layer on the surface of the storage tank, and the insulation heat preservation layer comprises an internal heat preservation foam layer and a surface heat preservation hardened layer. The cable support at least comprises two support foundations arranged at intervals and a laying channel installed between the two support foundations. The support foundation is made of flat steel plates, is in a shape like a Chinese character'ri 'and comprises a top plate, two vertical plates, a bottom plate and a partition plate. At least one connecting hole is formed in the top plate; the support foundation with the height exceeding half of the height is buried in the insulation heat preservation layer on the surface of the storage tank, namely a bottom plate and a partition plate of the support foundation are both located in the heat preservation foam layer. A plurality of mounting holes are formed in the laying channel at intervals in the length direction, and the laying channel is mounted between the top plates of the two support foundations through at least two sets of fasteners. According to the utility model, the stability of the cable bracket on the insulation layer of the storage tank can be improved, the manufacturing and processing mode can be simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to a cable support on a marine cryogenic liquid cargo storage tank. Background Art

[0002] The surface of a cryogenic liquid cargo storage tank on a liquid cargo (LPG, LNG, CO2) carrier is coated with a thermal insulation layer to isolate the ambient normal temperature state and ensure the constancy of the low temperature inside the tank body. Generally, the thermal insulation layer of the liquid cargo storage tank includes an internal thermal insulation spray foam layer and a surface thermal insulation hardening layer. At this time, temperature sensors need to be installed at multiple positions on the outer surface of the tank body to monitor the actual state of the liquid cargo inside the tank.

[0003] Then, how to lay the cables of the sensors through the cable support on the surface of the tank body is one of the problems to be solved. The cable support includes at least two spaced-apart support bases and a laying channel installed between the two support bases, and the cables are laid on the laying channel.

[0004] The support bases in the current cable support are embedded in the thermal insulation hardening layer on the surface of the tank body. This support base is composed of upper and lower discs and round steel coaxially connected between the upper and lower discs. The diameter of the lower disc is larger than that of the upper disc. By burying the lower disc in the insulation hardening layer, the purpose of stabilizing the support base on the surface of the tank body is achieved. The upper and lower discs at the bottom of the support need to be blanked with iron plates, cut and welded to the round steel to form an integral body, and then internal threaded holes are opened at the centers of the upper and lower discs and the center of the round steel. The whole structure is complex to process, including round steel and steel plate materials, and fine machining processes such as cutting the steel plate and threading the internal thread need to be carried out in sequence, with too high cost and limited number of cables (support plates) that can be carried. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a cable laying device on a marine cryogenic liquid cargo storage tank, which can improve the stability of the cable support on the insulation thermal insulation layer of the storage tank, simplify the manufacturing and processing method, and reduce the cost.

[0006] The purpose of the utility model is realized as follows: A cable support on a marine cryogenic liquid cargo storage tank is installed in the insulation thermal insulation layer on the surface of the storage tank. The insulation thermal insulation layer includes an internal thermal insulation foam layer and a surface thermal insulation hardening layer; the cable support includes at least two spaced-apart support bases and a laying channel installed between the two support bases. Among them,

[0007] The support base is made of a flat steel plate, and the support base is in a shape of a Chinese character 'Ri' and includes a top plate, two vertical plates respectively connected to the two ends of the top plate, a bottom plate connected between the bottoms of the two vertical plates, and a partition plate connected between the middles of the two vertical plates; at least one connection hole is opened on the top plate;

[0008] More than half of the support foundation is buried in the insulation layer on the surface of the storage tank, that is, the bottom plate and partition of the support foundation are both located in the insulation foam layer;

[0009] The laying channel has multiple mounting holes spaced apart along its length, and the laying channel is installed between the top plates of the two support foundations by at least two sets of fasteners.

[0010] The cable support on the aforementioned marine cryogenic liquid cargo storage tank has a tensile strength of not less than 300 kPa for the thermal insulation foam layer and a thickness of 2-3 mm for the thermal insulation hardening layer, with a tensile strength of not less than 50 mPa.

[0011] The cable support on the aforementioned marine cryogenic liquid cargo storage tank, wherein the distance L between the top surface of the top surface of the partition of the support base and the top surface of the insulating foam layer is at least 2 mm.

[0012] The cable support on the aforementioned marine cryogenic liquid cargo storage tank, wherein the top plate and two vertical plates of the support foundation are made of a single flat steel plate bent into an inverted U-shape.

[0013] The cable support on the aforementioned marine cryogenic liquid cargo storage tank is provided with a support base and a laying channel made of flat steel plate with a width of 30mm and a thickness of 2mm. Multiple mounting holes are provided at intervals along the length of the laying channel.

[0014] The cable bracket for marine cryogenic liquid cargo storage tanks of this utility model has the following features:

[0015] 1. By burying more than half of the support foundation in the insulation layer of the storage tank, the stability of the cable support on the storage tank can be improved.

[0016] 2. Simple manufacturing materials: Only 30×2mm flat steel is needed; the profiles are common and easy to purchase.

[0017] 3. Simple to manufacture: Cutting, bending, welding, grinding, drilling, the overall processing and manufacturing is simple, which can easily achieve the purpose of self-processing and manufacturing, reducing costs;

[0018] 4. Multiple cable laying: It can realize the purpose of installing and laying multiple cables (≤5 cables) to meet the space requirements for electrical laying. Attached Figure Description

[0019] Figure 1 This is a front view of a cable bracket on a marine cryogenic liquid cargo storage tank according to this utility model;

[0020] Figure 2 yes Figure 1 Side view;

[0021] Figure 3 is Figure 1 the top view of;

[0022] Figure 4 is Figure 1 the front view of the support foundation in the cable support of;

[0023] Figure 5 is the front view of the cable support on another marine low-temperature liquid cargo storage tank of the present utility model;

[0024] Figure 6 is Figure 5 the side view of;

[0025] Figure 7 is Figure 5 the top view of;

[0026] Figure 8 is Figure 5 the front view of the support foundation in the cable support of. Specific embodiments

[0027] The present utility model will be further described below in conjunction with the accompanying drawings.

[0028] First, please refer to Figures 1 to 4 , the cable support on the marine low-temperature liquid cargo storage tank of the present utility model is installed in the insulation and heat preservation layer on the surface of the storage tank; the insulation and heat preservation layer on the surface of the storage tank includes an internal heat preservation foam layer 1A and a surface heat preservation hardening layer 1B. The tensile strength of the heat preservation foam layer 1A is not less than 300 kPa; the thickness of the heat preservation hardening layer 1B is 2 - 3 mm, and the tensile strength is not less than 50 mPa.

[0029] The cable support includes at least two support foundations 2 arranged at intervals and a laying channel 3 installed between the two support foundations 2; wherein,

[0030] The support foundation 2 is made of a flat steel plate with a width of 30 mm and a thickness of 2 mm. The support foundation 2 is in a shape of a Chinese character 'Ri' and includes a top plate 21, two vertical plates 22, a bottom plate 23 connected between the bottoms of the two vertical plates 22, and a partition plate 24 connected between the middles of the two vertical plates 22; a connection hole 20 is opened at the center of the top plate 21; more than half of the height of the support foundation 2 is buried in the insulation and heat preservation layer on the surface of the storage tank, that is, the bottom plate 23 and the partition plate 24 of the support foundation 2 are both located in the heat preservation foam layer 1A, and the distance L between the top surface of the partition plate 24 and the top surface of the heat preservation foam layer 1A is at least 2 mm;

[0031] The laying channel 3 is also made of a flat steel plate with a width of 30 mm and a thickness of 2 mm. A plurality of mounting holes are spaced along the length direction on the laying channel 3, so that the laying channel 3 is installed between the top plates 21 of two support bases 2 by at least two sets of fasteners 4. The mounting holes on the laying channel 3 are oblong holes, which can flexibly adjust the mounting position according to the distance between the two support bases 2.

[0032] When manufacturing the support base 2 of the cable support of the present utility model, first cut a flat steel plate with a length of 140 mm and two flat steel plates with a length of 36 mm. Then drill a connection hole 20 in the middle of the flat steel plate with a length of 140 mm. Next, bend the flat steel plate with a length of 140 mm into an inverted U-shaped frame to form the top plate 21 with a length of 36 mm and two vertical plates 22 with a height of 50 mm of the support base 2. Then weld a flat steel plate (partition plate 24) with a length of 36 mm between the middle parts of the two vertical plates 22, and weld another flat steel plate (bottom plate 23) with a length of 36 mm between the bottoms of the two vertical plates 22. Finally, bury the support base 2 in the insulation layer of the storage tank, and then install the laying channel 3 between the top plates 21 of the two support bases through two sets of fasteners 4. Then two cables 5 can be laid on the laying channel 3.

[0033] Please refer to Figures 5 to 8 again. Another cable support on a marine low-temperature liquid cargo storage tank of the present utility model is installed in the insulation layer on the surface of the storage tank; the insulation layer on the surface of the storage tank includes an internal insulation foam layer 1A and a surface insulation hardening layer 1B. The tensile strength of the insulation spray foam layer 1A is not less than 300 kPa; the thickness of the insulation hardening layer 1B is 2 - 3 mm, and the tensile strength is not less than 50 mPa.

[0034] The cable support at least includes two support bases 2 arranged at intervals and two laying channels 3 installed between the two support bases 2; wherein,

[0035] The support base 2 is made of a flat steel plate with a width of 30 mm and a thickness of 2 mm. The support base 2 is in a shape of a Chinese character 'Ri' and includes a top plate 21, two vertical plates 22, a bottom plate 23 connected between the bottoms of the two vertical plates 22, and a partition plate 24 connected between the middle parts of the two vertical plates 22; two connection holes 2 are arranged side by side in the middle of the top plate 21; more than half of the height of the support base 2 is buried in the insulation layer on the surface of the storage tank, that is, the bottom plate 23 and the partition plate 24 of the support base 2 are both located in the insulation foam layer 1A, and the distance L between the top surface of the partition plate 24 and the top surface of the insulation foam layer 1A is at least 2 mm;

[0036] The two laying channels 3 are also made of flat steel plates with a width of 30mm and a thickness of 2mm. Multiple mounting holes are opened at intervals along the length of the two laying channels 3. Each of the two laying channels 3 is installed in parallel between the top plates 21 of the two support foundations 2 by at least two sets of fasteners 4. The mounting holes on the laying channels 3 are oval holes, which can flexibly adjust the installation position according to the spacing between the two support foundations 2.

[0037] When manufacturing the support base 2 of the cable bracket of this utility model, first cut a flat steel plate with a length of 170mm and two flat steel plates with a length of 66mm. Then, drill two connecting holes 20 in the middle of the flat steel plate with a length of 170mm. Then, bend the flat steel plate with a length of 170mm into an inverted U-shaped frame to form a top plate 21 with a length of 66mm and two vertical plates 22 with a height of 50mm in the support base 2. Then, weld a flat steel plate (partition plate 24) with a length of 66mm between the middle of the two vertical plates 22, and weld another flat steel plate (bottom plate 23) with a length of 66mm between the bottom of the two vertical plates 22. Finally, the support base 2 is buried in the insulation layer of the storage tank. Then, the two laying channels 3 are installed in parallel between the top plates 21 of the two support bases through two sets of fasteners 4. Then, two cables 5 can be laid on the two laying channels 3 respectively.

[0038] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A cable support on a marine cryogenic liquid cargo storage tank, which is installed in the insulation and thermal insulation layer on the surface of the storage tank. The insulation and thermal insulation layer includes an internal thermal insulation foam layer and a surface thermal insulation hardening layer; the cable support at least includes two spaced support bases and a laying channel installed between the two support bases, and is characterized in that, the support base is made of a flat steel plate, and the support base is in a shape of a Chinese character 'Ri' and includes a top plate, two vertical plates respectively connected to the two ends of the top plate, a bottom plate connected between the bottoms of the two vertical plates, and a partition plate connected between the middles of the two vertical plates; at least one connection hole is opened on the top plate; more than half of the height of the support base is buried in the insulation and thermal insulation layer on the surface of the storage tank, that is, the bottom plate and the partition plate of the support base are both located in the thermal insulation foam layer; a plurality of installation holes are spaced along the length direction on the laying channel, and the laying channel is at least installed between the top plates of the two support bases through two sets of fasteners.

2. The cable bracket on a marine cryogenic liquid cargo storage tank according to claim 1, characterized in that, The tensile strength of the thermal insulation foam layer is not less than 300 kPa; the thickness of the thermal insulation hardening layer is 2-3 mm, and the tensile strength is not less than 50 mPa.

3. The cable bracket on a marine cryogenic liquid cargo storage tank according to claim 1, characterized in that, The distance L between the top surface of the partition plate of the support base and the top surface of the thermal insulation foam layer is at least 2 mm.

4. The cable support for a marine cryogenic liquid cargo storage tank according to claim 1, characterized in that, The top plate and the two vertical plates of the support base are bent into an inverted U-shaped frame by a whole flat steel plate.

5. The cable bracket on a marine cryogenic liquid cargo storage tank according to claim 1, characterized in that, Both the support base and the laying channel are made of flat steel plates with a width of 30 mm and a thickness of 2 mm, and a plurality of installation holes are spaced along the length direction on the laying channel.

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