A storage tank equipment

Abstract

The present invention discloses a storage tank device, including a tank body for storing liquefied hydrocarbon materials, the tank body is fixed on a storage tank foundation on the ground and is provided with an external interface pipeline; a concrete retaining wall surrounding the tank body; a protective top cover located above the tank body, the protective top cover being sealed and connected to the top of the concrete retaining wall; a heat-insulating medium filled in an airtight protective cavity surrounded by the tank body, the concrete retaining wall, the protective top cover and the ground, and the external interface pipeline extending outward from the concrete retaining wall or the protective top cover. The present invention utilizes the heat-insulating medium filled in the airtight protective cavity to achieve heat insulation between the tank body and the outside world, prevents the external heat from being directly transferred to the tank body, and can effectively prevent the explosion and fire of the storage tank caused by the vaporization and expansion of the liquid material due to heat; the tank body is placed in the airtight protective cavity, which is sealed and separated from the outside world, so as to avoid the tank body being directly exposed to the open air, and to avoid the tank body being subjected to nearby heat sources, explosion shock waves, splashing impacts or other sudden damages, thereby reducing the safety production hazards in the storage and transportation tank area of ​​petrochemical enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of petrochemical storage and transportation, and more specifically, to a storage tank device. Background Art

[0002] The storage tank area in petrochemical enterprises generally stores a large amount of liquefied hydrocarbon media. The storage of large-volume liquefied hydrocarbons under normal temperature and pressure is usually in the form of spherical tanks, with a single tank capacity of 1000m 3 As mentioned above, multiple spherical tanks form a tank group and are placed on the ground in the open air. This has always been the most potentially hazardous area in the enterprise. Tank explosions and fires are often caused by improper operation or the influence of external heat sources. Due to the large storage capacity, it is easy to cause fire fighting difficulties, directly leading to major property losses and casualties; it may even indirectly affect adjacent storage tanks or other equipment in the area, causing greater secondary hazards, bringing great safety hazards to petrochemical enterprises.

[0003] Furthermore, in order to reduce the secondary disasters caused by the explosion of liquefied hydrocarbon spherical tanks, the safety distance between the tanks and between the tanks and other equipment and structures is large, so the tank area occupies a large area and the land utilization rate is low.

[0004] In addition, the material requirements for manufacturing spherical tanks are high, and the manufacturing, welding and assembly requirements are strict, the technical requirements are high, the inspection workload is large, the manufacturing cost is high, and the welding quality is difficult to guarantee, which is more likely to cause safety risks of spherical tanks during later production operations. Summary of the invention

[0005] In view of this, the purpose of the present invention is to disclose a storage tank equipment to reduce the hidden safety production risks in the storage and transportation tank area of ​​a petrochemical enterprise.

[0006] In order to achieve the above object, the present invention discloses the following technical solution:

[0007] A storage tank device, comprising:

[0008] A tank body for storing liquefied hydrocarbon materials, the tank body being fixed on a storage tank foundation on the ground and provided with an external interface pipeline;

[0009] A concrete retaining wall surrounding the tank body;

[0010] A protective top cover located above the tank body, the protective top cover being sealed and connected to the top of the concrete retaining wall;

[0011] The heat-insulating medium is filled in the airtight protective cavity surrounded by the tank body, the concrete retaining wall, the protective top cover and the ground, and the external interface pipeline extends outward from the concrete retaining wall or the protective top cover.

[0012] Preferably, in the above-mentioned storage tank equipment, a heat-insulating layer is provided on the outer wall of the tank body.

[0013] Preferably, in the above-mentioned storage tank equipment, the external interface pipeline is arranged at the bottom of the tank body and extends outward from the concrete retaining wall;

[0014] The heat-insulating layer comprises at least one layer of glass wool fixed on the outer wall of the tank body by insulating needles;

[0015] The top of the tank body is provided with an inspection hole, and the inspection hole is provided with a strap for fixing the glass wool at the inspection hole to the outer wall of the inspection hole.

[0016] Preferably, the above-mentioned storage tank equipment further comprises a horizontal partition that divides the tank body into an upper half and a lower half, one end of the horizontal partition being arranged on the concrete retaining wall, and the other end being arranged on the outer wall of the tank body;

[0017] Wherein, the heat insulating medium is filled in the upper protective cavity surrounded by the upper half of the tank body, the horizontal partition, the concrete retaining wall, and the protective top cover;

[0018] The heat-insulating layer is arranged on the upper part of the tank body.

[0019] Preferably, in the above-mentioned storage tank equipment, the tank body comprises:

[0020] A cylinder with an axis arranged in a horizontal direction, wherein a cathodic protection is provided on the cylinder;

[0021] Two sealing heads are sealed at both ends of the cylinder.

[0022] Preferably, in the above-mentioned storage tank equipment, the barrel is cylindrical and the head is spherical.

[0023] Preferably, in the above-mentioned storage tank equipment, a plurality of reinforcement rings distributed along the axial direction are welded to the inner wall of the cylinder.

[0024] Preferably, in the above-mentioned storage tank equipment, there are at least two tank bodies, and two adjacent tank bodies are sealed and separated by a common concrete retaining wall.

[0025] Preferably, in the above-mentioned storage tank equipment, the tank body is arranged on the storage tank foundation via a saddle;

[0026] The concrete retaining wall is provided with an inspection passage for the external interface pipeline.

[0027] Preferably, in the above-mentioned storage tank equipment, the thermal insulation medium is expanded perlite.

[0028] It can be seen from the above technical solutions that the storage tank equipment disclosed in the present invention utilizes a tank body to store liquefied hydrocarbon materials such as liquefied hydrocarbons, and connects material inlet and outlet pipes and gas phase reflux pipes through external interface pipelines to achieve input and output of liquefied hydrocarbon materials.

[0029] The storage tank equipment disclosed in the present invention, on the one hand, utilizes the heat insulating medium filled in the airtight protective cavity surrounded by the tank body, concrete retaining wall, protective top cover and ground to achieve heat insulation between the tank body and the outside world, prevents the external heat from being directly transferred to the tank body, and can effectively prevent the storage tank explosion and fire caused by the vaporization and expansion of the liquid material due to heat; on the other hand, the tank body is placed in the airtight protective cavity surrounded by the concrete retaining wall, protective top cover and ground, and is sealed and separated from the outside world to avoid the tank body being directly exposed to the open air, and utilizes the concrete retaining wall and protective top cover to prevent the tank body from being affected by the nearby heat source, explosion shock wave, splashing impact or other sudden damage, thereby ensuring the safe storage of liquefied hydrocarbon materials, thereby reducing the safety production risks in the storage and transportation tank area of ​​petrochemical enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 is a schematic cross-sectional view of the storage tank device disclosed in an embodiment of the present invention along the axial direction of the tank body;

[0032] Figure 2 is a schematic diagram of a cross-sectional structure when the storage tank equipment disclosed in an embodiment of the present invention includes a single tank body;

[0033] Figure 3 It is a schematic diagram of the cross-sectional structure when the storage tank equipment disclosed in the embodiment of the present invention includes three tank bodies;

[0034] Figure 4 yes Figure 3 A is a partial enlarged structural diagram of the middle part;

[0035] Figure 5 yes Figure 3 The local enlarged structure diagram of B in the middle;

[0036] Figure 6 yes Figure 3 The partially enlarged structure diagram of C in the middle;

[0037] Figure 7 yes Figure 3 A partial enlarged structural diagram of D in the middle. DETAILED DESCRIPTION

[0038] The embodiment of the invention discloses a storage tank device, which reduces the hidden safety production risks in the storage and transportation tank area of ​​a petrochemical enterprise.

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Please refer to the attached Figure 1-3 The storage tank equipment disclosed in the embodiment of the present invention includes a tank body 3 for storing liquefied hydrocarbon materials, the tank body 3 is fixed on a tank foundation 7 on the ground and is provided with an external interface pipeline 32; a concrete retaining wall 1 surrounding the tank body 3; a protective top cover 2 located above the tank body 3, the protective top cover 2 is sealed and connected to the top of the concrete retaining wall 1; a heat insulating medium 9 filled in an airtight protective cavity surrounded by the tank body 3, the concrete retaining wall 1, the protective top cover 2 and the ground, and the external interface pipeline 32 extends outward from the concrete retaining wall 1 or the protective top cover 2.

[0041] It should be noted that if Figure 4 As shown, an I-beam 21 is welded to the edge of the protective top cover 2, and a U-beam 11 is covered on the top of the concrete retaining wall 1. The U-beam 11 and the concrete retaining wall 1 are sealed by a sealing gasket 12. The I-beam 21 and the U-beam 12 are welded to achieve a sealed connection between the protective top cover 2 and the concrete retaining wall 1 to avoid steam leakage therebetween.

[0042] The storage tank equipment disclosed in this embodiment utilizes the tank body 3 to store liquefied hydrocarbon materials such as liquefied hydrocarbons, and connects the material inlet and outlet pipes and the gas phase reflux pipe through the external interface pipeline 32 to realize the input and output of the liquefied hydrocarbon materials.

[0043] The storage tank equipment disclosed in this embodiment, on the one hand, utilizes the heat insulating medium 9 filled in the airtight protective cavity surrounded by the tank body 3, the concrete retaining wall 1, the protective top cover 2 and the ground to achieve thermal insulation between the tank body 3 and the outside world, prevent the external heat from being directly transferred to the tank body 3, and can effectively prevent the explosion and fire of the storage tank caused by the vaporization and expansion of the liquid material due to heat; on the other hand, the tank body 3 is placed in the airtight protective cavity surrounded by the concrete retaining wall 1, the protective top cover 2 and the ground, and is sealed and separated from the outside world to prevent the tank body 3 from being directly exposed to the open air. The concrete retaining wall 1 and the protective top cover 2 are utilized to prevent the tank body 3 from being damaged by nearby heat sources, explosion shock waves, splashing objects or other sudden damages, thereby ensuring the safe storage of liquefied hydrocarbon materials, thereby reducing the safety risks in the storage and transportation tank areas of petrochemical enterprises.

[0044] In addition, due to the protection of the concrete retaining wall 1 and the protective top cover 2, the safety distance between the tank body 3 and the surrounding adjacent facilities can be shortened, thereby reducing the occupied area and improving the land utilization rate.

[0045] The storage tank equipment of this embodiment is mainly used in storage and transportation tank areas for storing a large amount of liquefied hydrocarbons at room temperature and pressure, so as to solve the problem of safe storage of liquefied hydrocarbons and reduce the potential dangers caused by the large-scale storage of liquefied hydrocarbons.

[0046] In order to further improve safety, an insulation layer is provided on the outer wall of the tank body 3. The present application also uses the insulation layer on the outer wall of the tank body 3 to insulate the tank body 3, further preventing heat from being transferred to the tank body 3, and cooperates with the insulation medium 9 in the airtight protective cavity to achieve a better insulation effect, preventing the liquid material in the tank body 3 from evaporating and expanding due to heat. Of course, the present application can also only provide the insulation medium 9.

[0047] For the convenience of assembly, the external interface pipeline 32 is arranged at the bottom of the tank body 3 and extends outward from the concrete retaining wall 1. The external interface pipeline 32 located at the bottom is conveniently connected to the material inlet and outlet pipes and the gas phase reflux pipe; of course, the external interface pipeline 32 can also be arranged in the middle or top of the tank body 3.

[0048] like Figure 3 , Figure 6 As shown, the insulation layer includes at least one layer of glass wool 10 fixed to the outer wall of the tank body 3 through insulating needles 101; this embodiment uses glass wool 10 as the insulation layer, which is connected to the steel plate of the tank body 3 through the insulating needles 101, has a simple structure, is easy to install, and has a fireproof function. The insulation layer can also be other insulation structures such as aerogel felt.

[0049] The glass wool 10 is specifically two layers, each layer of glass wool 10 is 50 mm thick, and the spacing between the insulating needles 101 is 300 mm, which can achieve good thermal insulation effect and fixing strength while being easy to process and install. Of course, the above glass wool 10 can also be one layer or other layers.

[0050] like Figure 3 , Figure 7 As shown, an inspection hole 31 is provided on the top of the tank body 3 to facilitate installation, disassembly, cleaning and maintenance of the inside of the tank body 3; the inspection hole 31 can be a manhole or a handhole, specifically a manhole. The present application forms the inspection hole 31 by an external inspection tube, and the inspection tube is welded to the inspection port of the tank body 3.

[0051] The inspection hole 31 is provided with a strap 102 for fixing the glass wool 10 thereon to the outer wall of the inspection hole 31. Each layer of glass wool 10 is fixed by the strap 102. The straps 102 are arranged at intervals to facilitate the fixing of the glass wool 10 while ensuring the fixing strength.

[0052] Preferably, the storage tank equipment also includes a horizontal partition 5 that divides the tank body 3 into an upper half and a lower half, one end of the horizontal partition 5 is arranged on the concrete retaining wall 1, and the other end is arranged on the outer wall of the tank body 3; wherein the heat insulating medium 9 is filled in the upper protective cavity surrounded by the upper half of the tank body 3, the horizontal partition 5, the concrete retaining wall 1, and the protective top cover 2; the insulation layer is arranged in the upper half of the tank body 3.

[0053] like Figure 5 As shown, in this embodiment, a horizontal partition 5 is used to separate the airtight protective cavity surrounded by the tank body 3, the concrete retaining wall 1, the protective top cover 2 and the ground into two parts, and only the heat insulation medium 9 and the thermal insulation layer are arranged in the upper part, which can save materials while ensuring the heat insulation effect.

[0054] During assembly, a retaining wall support 13 is provided on the concrete retaining wall 1, and the retaining wall support 13 is connected to one end of the horizontal partition 5 by welding; a tank support 33 is welded on the outer wall of the tank body 3, and is connected to the other end of the horizontal partition 5 by welding. Specifically, the thickness of the horizontal partition 5 is 5 mm.

[0055] It is understandable that the present application may also provide a heat insulating medium 9 in a small half or more than half of the upper part of the airtight protective cavity; the present application may also provide an insulation layer on the entire outer wall or more than half of the outer wall of the tank body 3.

[0056] like Figure 1 As shown, the tank body 3 includes a cylinder whose axis is arranged in the horizontal direction, and a cathode protection 8 is provided on the cylinder; and two heads are sealed at both ends of the cylinder. The tank body 3 of the present application is horizontal, which is convenient for processing, and its manufacturing, welding and assembly technology requirements are relatively low, which reduces the manufacturing cost, and the welding quality is easier to ensure, which reduces the safety risk during the later production operation.

[0057] The cathodic protection 8 plays an anti-corrosion role and prolongs the service life of the tank body 3.

[0058] In order to further facilitate processing, the cylinder is cylindrical and the head is spherical. Of course, the cylinder can also be in other shapes, such as elliptical, rectangular with transitional rounded corners, etc., and the shape of the head is matched accordingly.

[0059] In order to improve the strength of the middle part of the cylinder, the inner wall of the cylinder is welded with a plurality of reinforcing rings 4 distributed along the axial direction. Specifically, the reinforcing rings 4 are welded to the inner wall of the cylinder through an I-shaped seat, which can improve the rigidity of the cylinder, thereby reducing the deformation of the cylinder and improving the working reliability.

[0060] In order to improve the land utilization rate of the tank area, there are at least two tank bodies 3, and two adjacent tank bodies 3 are sealed and separated by a common concrete retaining wall 1. Figure 3As shown, the storage tank equipment includes three tank bodies 3 arranged side by side, and the tank bodies 3 are separated by a concrete retaining wall 1 to ensure a safe distance and avoid mutual impact and damage between the tank bodies 3. It can be understood that the above tank body 3 can also be one, such as Figure 2 As shown, it can also be other numbers.

[0061] like Figure 1 As shown, the tank body 3 is arranged on the tank foundation 7 through a saddle 6, and the saddle 6 has legs for supporting the tank body 3 away from the tank foundation 7. There are multiple saddles 6, which are arranged at intervals to ensure the stability of the tank body 3. Of course, the tank body 3 can also be fixed to the tank foundation 7 through multiple pillars or brackets.

[0062] The concrete retaining wall 1 is provided with an inspection passage for the external interface pipeline 32 to facilitate daily inspection and maintenance.

[0063] The heat insulating medium 9 is an insulating and inert material, which can ensure heat insulation and prevent explosion. Preferably, the heat insulating medium 9 is expanded perlite, which can be fireproof while insulating, ensuring work safety.

[0064] The heat insulating medium 9 can also be made of asbestos, glass fiber, polystyrene foam plastic, etc.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A storage tank equipment, characterized in that: include: A tank body (3) for storing liquefied hydrocarbon materials, the tank body (3) comprising a cylinder body with an axis arranged in a horizontal direction; a cathode protection (8) is provided on the cylinder body, and two sealing heads are sealed at both ends of the cylinder body; The tank body is arranged on a tank foundation (7) via a saddle, the saddle having legs for supporting the tank body away from the tank foundation (7), and the saddles (6) are multiple and arranged at intervals; The concrete retaining wall (1) surrounds the tank body (3) on all sides; the external interface pipeline (32) is arranged at the bottom of the tank body (3) and extends outward from the concrete retaining wall (1) or the protective top cover (2); The protective top cover (2) is located above the tank body (3), and the protective top cover (2) is sealed and connected to the top of the concrete retaining wall (1); an I-shaped beam is welded to the edge of the protective top cover, and a U-shaped beam is covered on the top of the concrete retaining wall. The U-shaped beam and the concrete retaining wall are sealed by a sealing gasket, and the I-shaped beam and the U-shaped beam are welded; It also includes a horizontal partition (5) for dividing the tank body (3) into an upper half and a lower half, the horizontal partition (5) having a thickness of 5 mm; one end of the horizontal partition (5) is arranged on the concrete retaining wall (1), and the other end is arranged on the outer wall of the tank body (3); a retaining wall support is arranged on the concrete retaining wall, and the retaining wall support is connected to one end of the horizontal partition by welding; a tank body support is welded to the outer wall of the tank body, and is connected to the other end of the horizontal partition by welding; A heat-insulating layer is arranged on the outer wall of the tank body (3); the heat-insulating layer is arranged on the upper half of the tank body (3); The heat-insulating layer comprises at least one layer of glass wool (10) fixed to the outer wall of the tank body (3) by means of insulating needles (101); the thickness of each layer of glass wool 10 is 50 mm, and the spacing between the insulating needles 101 is 300 mm; An inspection hole (31) is provided at the top of the tank body (3), and a strap (102) is provided at the inspection hole (31) for fixing the glass wool (10) at the inspection hole (31) to the outer wall of the inspection hole (31); The heat insulating medium (9) is filled in the upper protective cavity surrounded by the upper half of the tank body (3), the horizontal partition (5), the concrete retaining wall (1) and the protective top cover (2).

2. The storage tank equipment according to claim 1, characterized in that: The cylinder body is cylindrical, and the sealing head is spherical.

3. The storage tank equipment according to claim 1, characterized in that: The inner wall of the cylinder is welded with a plurality of reinforcement rings (4) distributed along the axial direction.

4. The storage tank equipment according to claim 1, characterized in that: There are at least two tank bodies (3), and two adjacent tank bodies (3) are sealed and separated by a common concrete retaining wall (1).

5. The storage tank equipment according to claim 1, characterized in that: The concrete retaining wall (1) is provided with an inspection passage for the external interface pipeline (32).

6. The storage tank equipment according to any one of claims 1 to 5, characterized in that: The heat insulating medium (9) is expanded perlite.

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