A pressure vessel for storing hazardous gases

Abstract

The present application discloses a pressure vessel for storing dangerous gases, which is applied to the field of pressure vessels. When the pressure of the dangerous gases stored in the pressure tank body increases due to the increase in temperature, the dangerous gases stored in the pressure tank body will push the positioning member away from the pressure tank body, and the neutralizing ball placed between the sealing piston and the grid will roll to the bottom of the L-shaped tube. When the water-soluble shell of the outer wall of the elastic spherical shell is eliminated by liquid water invasion, the excessive amount of neutralizing liquid filled inside will break the elastic spherical shell, and the neutralizing liquid will react with the high-pressure dangerous gas to produce liquid, so that the air pressure at the bottom of the L-shaped tube is always maintained at a relatively low level. Even if the high-pressure dangerous gas enters the bottom of the L-shaped tube, it is not easy to cause the air pressure in the L-shaped tube to be too high, thereby increasing the overall safety of the L-shaped tube, achieving the goal of increasing the safety of the use of the pressure tank body, and not easily causing safety accidents induced by the explosion of the pressure tank body.

Description

Technical Field

[0001] The present application relates to the field of pressure vessels, and in particular to a pressure vessel for storing hazardous gases. Background Art

[0002] A pressure vessel is a closed container that can withstand pressure. Pressure vessels are widely used. They play an important role in many sectors such as industry, civil industry, military industry, and many fields of scientific research. Among them, the most used are in the chemical industry and petrochemical industry. The pressure vessels used in the petrochemical industry alone account for about 50% of the total number of pressure vessels. In the chemical and petrochemical fields, pressure vessels are mainly used in process such as heat transfer, mass transfer, reaction, and storage and transportation of pressurized gas or liquefied gas; they are also widely used in other industrial and civil fields, such as air compressors. Various types of special compressors and auxiliary machines of refrigeration compressors (coolers, buffers, oil-water separators, gas storage tanks, evaporators, liquid coolant storage tanks, etc.) are all pressure vessels.

[0003] Pressure vessels are commonly used to store highly dangerous items. Once an over-pressure explosion occurs in a pressure vessel during use, in addition to the damage caused by the explosion, the above-mentioned dangerous items will also spread rapidly with the explosion of the pressure vessel, causing serious safety accidents. Summary of the invention

[0004] The purpose of the present application is to solve the safety hazards existing when a pressure vessel stores dangerous gases. Compared with the prior art, a pressure vessel for storing dangerous gases is provided, in which a sealing cover matching the pressure vessel is fixedly connected to the open end of the pressure vessel body, an L-shaped tube is fixedly connected to the sealing cover, an end of the L-shaped tube close to the sealing cover passes through the sealing cover and extends into the pressure vessel body, the pressure vessel body is connected to the L-shaped tube, a fixing ring matching the pressure vessel body is fixedly connected to the opening of the L-shaped tube close to one end of the pressure vessel body, a positioning piece is movably connected inside the L-shaped tube, and the fixing ring is connected to the positioning piece. A tension spring is fixedly connected between the parts, the positioning part includes a sealing piston and a mesh grid whose size matches that of the L-shaped tube, a connecting column is fixedly connected between the sealing piston and the mesh grid, a plurality of neutralizing balls are filled between the sealing piston and the mesh grid, the neutralizing balls include an elastic spherical shell, an excess of neutralizing liquid is filled in the elastic spherical shell, the elastic spherical shell has a tendency to expand as a whole, a water-soluble outer shell is fixedly connected to the outer side of the elastic spherical shell, a plurality of storage fibers are fixedly connected to the inner wall of the elastic spherical shell, the plurality of storage fibers are entangled with each other to form a three-dimensional structure, and liquid water is contained on the bottom plate of the sealing piston;

[0005] The safety of using the pressure tank body is increased, and safety accidents caused by explosion of the pressure tank body are less likely to occur.

[0006] Optionally, a plurality of elastic fibers are fixedly connected to the outer wall of the elastic spherical shell, and the ends of the plurality of elastic fibers away from the elastic spherical shell all penetrate the water-soluble outer shell and extend to the outside of the water-soluble outer shell, and the elastic fibers on the outsides of adjacent neutralizing balls are entangled together. Furthermore, on the one hand, the elastic fibers can effectively slow down the entry of high-pressure gas in the pressure tank body into the bottom of the L-shaped tube, so that the neutralization reaction at the bottom of the L-shaped tube can proceed in an orderly manner. On the other hand, after the neutralizing ball rolls out from between the L-shaped tube and the sealing piston, it can drive the adjacent neutralizing balls to move together, so that the neutralizing balls are not prone to local concentrated accumulation.

[0007] Optionally, the inner wall of the elastic spherical shell is bored with a plurality of prefabricated grooves, which are evenly distributed on the inner wall of the elastic spherical shell, further making it easy for the elastic spherical shell to form controllable debris when it breaks, so that the debris of the elastic spherical shell can be spread flat on the liquid water and the reaction liquid, thereby increasing the protective effect of the debris of the elastic spherical shell.

[0008] Optionally, a plurality of storage fibers are fixedly connected inside the elastic spherical shell, and the plurality of storage fibers are entangled with each other. Further, after the elastic spherical shell is torn and splashed under the action of high-pressure neutralizing liquid, the storage fibers can bring out the neutralizing liquid together to form liquid mist, thereby accelerating the reaction speed of the neutralizing liquid and the hazardous gas.

[0009] Optionally, the storage fiber includes a fiber body, and the fiber body is a hollow structure, which can further bring more neutralizing liquid when the elastic spherical shell debris splashes, thereby increasing the generation effect of liquid mist.

[0010] Optionally, a plurality of through holes are drilled on the fiber body, and the plurality of through holes all penetrate the fiber body, so that when the elastic spherical shell fragments splash, more neutralizing liquid can be brought, thereby increasing the generation effect of liquid mist.

[0011] Optionally, a sealing ring is connected between the sealing cover and the L-shaped tube, and the sealing ring is fixedly connected to the L-shaped tube, which further increases the sealing effect of the connection between the sealing cover and the L-shaped tube and makes leakage accidents less likely to occur.

[0012] Optionally, a locking ring is threadedly connected to the outer wall of the L-shaped tube, and the locking ring is located at the opening of one end of the L-shaped tube close to the sealing cover, which further facilitates the installation and disassembly of the L-shaped tube as a whole.

[0013] Optionally, a plurality of finger grooves are cut on the outer wall of the locking ring to further facilitate installation and removal of the locking ring.

[0014] Optionally, the L-shaped tube is made of a transparent acrylic material with high thermal conductivity, which further facilitates observation by staff and can quickly dissipate the heat generated by the reaction, reducing the impact on the L-shaped tube, making the L-shaped tube less prone to fatigue damage and less likely to cause leakage of dangerous gases.

[0015] Compared with the prior art, the advantages of this application are:

[0016] When the pressure of the dangerous gas stored in the pressure tank body increases due to the increase in temperature, the dangerous gas stored in the pressure tank body will push the positioning piece away from the pressure tank body, and the neutralizing ball placed between the sealing piston and the grid will roll to the bottom of the L-shaped tube. Due to the separation effect of the sealing piston, the air pressure in the bottom part of the L-shaped tube will not increase with the increase in the air pressure in the pressure tank body. At this time, after the water-soluble outer shell of the outer wall of the elastic spherical shell is eliminated by liquid water invasion, the excessive neutralizing liquid filled inside will break the elastic spherical shell, and the neutralizing liquid reacts with the high-pressure dangerous gas to produce liquid, so that the air pressure at the bottom of the L-shaped tube is always maintained at a relatively low level. Even if the high-pressure dangerous gas enters the bottom of the L-shaped tube, it is not easy to cause excessive air pressure in the L-shaped tube, damage to the L-shaped tube, or leakage of dangerous gas, thereby increasing the overall safety of the L-shaped tube. The fragments of the elastic spherical shell will float on the surface of the liquid water and the reaction liquid, effectively preventing the falling neutralizing ball from causing splashing of liquid water and reaction liquid, and not easily causing erosion and damage to the positioning piece.

[0017] In the neutralizing ball, on the one hand, the elastic fiber can effectively slow down the high-pressure gas in the pressure tank body from entering the bottom of the L-shaped tube, so that the neutralization reaction at the bottom of the L-shaped tube can proceed in an orderly manner; on the other hand, after the neutralizing ball rolls out from between the L-shaped tube and the sealing piston, it can drive the adjacent neutralizing balls to move together, so that the neutralizing balls are not prone to localized accumulation. The excavation of the prefabricated groove makes it easy for the elastic spherical shell to form controllable debris when it breaks, so that the debris of the elastic spherical shell can be spread flat on the liquid water and the reaction liquid, increasing the protective effect of the elastic spherical shell debris.

[0018] Finally, the storage fiber is designed so that after the elastic spherical shell is torn and splashed by the high-pressure neutralizing liquid, the storage fiber can bring out the neutralizing liquid together to form liquid mist, thereby accelerating the reaction speed of the neutralizing liquid and the hazardous gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a pressure vessel for storing hazardous gases in the present application;

[0020] Figure 2 A side cross-sectional view of the pressure vessel of the present application;

[0021] Figure 3 for Figure 2 The structural diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of the structural changes of the L-shaped bottle of the present application;

[0023] Figure 5 This is a schematic diagram of the structure of the L-shaped bottle in the initial state of the present application;

[0024] Figure 6 This is a schematic diagram of the structure of the L-shaped bottle of the present application after pressure relief;

[0025] Figure 7 This is a schematic diagram of the structure of the fixing ring of the present application;

[0026] Figure 8 This is a schematic diagram of the structure of the positioning member of the present application;

[0027] Fig. 9 This is a schematic diagram of the structure of the neutralization ball of the present application;

[0028] Fig.10 This is a schematic diagram of the structure of the storage fiber of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Pressure tank body, 2. Sealing cover, 3. L-shaped tube, 4. Sealing ring, 5. Locking ring, 6. Fixing ring, 7. Sealing spring, 8. Grid, 9. Connecting column, 10. Tension spring, 11. Neutralizing ball, 1101. Elastic spherical shell, 1102. Elastic fiber, 1103. Water-soluble shell, 1104. Prefabricated groove, 12. Storage fiber, 1201. Fiber body, 1202. Through hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. Example

[0032] This application discloses a pressure vessel for storing hazardous gases. Figure 1-9, including a pressure tank body 1, an open end of the pressure tank body 1 is fixedly connected with a sealing cover 2 matching the pressure tank body, an L-shaped tube 3 is fixedly connected to the sealing cover 2, an end of the L-shaped tube 3 close to the sealing cover 2 penetrates the sealing cover 2 and extends into the pressure tank body 1, the pressure tank body 1 is connected to the L-shaped tube 3, an opening of the L-shaped tube 3 close to one end of the pressure tank body 1 is fixedly connected with a fixing ring 6 matching the pressure tank body, a positioning piece is movably connected in the L-shaped tube 3, a tension spring 10 is fixedly connected between the fixing ring 6 and the positioning piece, the positioning piece includes a sealing piston 7 and a mesh 8 whose size matches the L-shaped tube 3, a connecting column 9 is fixedly connected between the sealing piston 7 and the mesh 8, a plurality of neutralizing balls 11 are filled between the sealing piston 7 and the mesh 8, and the neutralizing ball 11 includes an elastic ball shell 110 1. The elastic spherical shell 1101 is filled with excessive neutralizing liquid, and the elastic spherical shell 1101 has a tendency to expand as a whole. In particular, the selection of the neutralizing liquid needs to match the dangerous gas stored in the pressure tank body 1. The neutralizing liquid will react with the dangerous gas stored in the pressure tank body 1 to generate a liquid, and the dangerous gas will dissolve in the neutralizing liquid. This is a well-known technology for those skilled in the art, and those skilled in the art can make a reasonable selection based on actual needs, so it is not disclosed in detail in this application. The outer side of the elastic spherical shell 1101 is fixedly connected to a water-soluble outer shell 1103, and the inner wall of the elastic spherical shell 1101 is fixedly connected to a plurality of storage fibers 12, and the plurality of storage fibers 12 are entangled with each other to form a three-dimensional structure, and liquid water is contained on the bottom plate of the sealing piston 7.

[0033] Firstly, during the storage of the pressure tank body 1, the pressure of the dangerous gas stored in the pressure tank body 1 will rise due to thermal expansion and contraction, and this rising process is usually slow and continuous. During the rising pressure of the dangerous gas stored inside the existing pressure tank body 1, slight deformation may occur. Although the slight deformation is not enough to affect the normal operation of the pressure tank body 1, it will leave fatigue risks, affect the overall service life or structural strength of the pressure tank body 1, and affect the normal use of the pressure tank body 1.

[0034] The present application is aimed at the above situation: when the pressure of the dangerous gas stored in the pressure tank body 1 rises due to the increase in temperature, the dangerous gas stored in the pressure tank body 1 will push the positioning member away from the pressure tank body 1, so that a gap appears between the sealing piston 7 of the positioning member and the L-shaped tube 3, and the neutralizing ball 11 placed between the sealing piston 7 and the grid 8 will roll to the bottom of the L-shaped tube 3. Due to the separation effect of the sealing piston 7, the air pressure in the bottom part of the L-shaped tube 3 will not rise with the increase in the air pressure in the pressure tank body 1. At this time, after the water-soluble shell 1103 of the outer wall of the elastic spherical shell 1101 is eliminated by liquid water intrusion, the excessive neutralizing liquid filled inside it will break the elastic spherical shell 1101. The neutralizing liquid reacts with the high-pressure dangerous gas to produce liquid, so that the air pressure at the bottom of the L-shaped tube 3 is always maintained at a relatively low level. Even if the high-pressure dangerous gas enters the bottom of the L-shaped tube 3, it is not easy to cause the air pressure in the L-shaped tube 3 to be too high, it is not easy to cause damage to the L-shaped tube 3, it is not easy to cause leakage of dangerous gas, and the overall safety of the L-shaped tube 3 is increased. The fragments of the elastic ball shell 1101 will float on the surface of the liquid water and the reaction liquid, effectively preventing the falling neutralizing ball 11 from causing splashing of liquid water and reaction liquid, and it is not easy to cause erosion and damage to the positioning parts. The maintenance personnel can judge whether there is overpressure in the pressure tank body 1 by the liquid level height in the L-shaped tube 3, and maintain the pressure tank body 1 in time.

[0035] A tension spring 10 is fixedly connected between the fixing ring 6 and the positioning member. After the internal pressure of 1 is restored, the positioning member will return to its original position under the action of the tension spring 10, and the isolation effect will be restored.

[0036] See also Fig. 9 A plurality of elastic fibers 1102 are fixedly connected to the outer wall of the elastic spherical shell 1101. The ends of the plurality of elastic fibers 1102 away from the elastic spherical shell 1101 all penetrate the water-soluble shell 1103 and extend to the outside of the water-soluble shell 1103. The elastic fibers 1102 on the outside of adjacent neutralizing balls 11 are entangled together. On the one hand, the elastic fibers 1102 can effectively slow down the high-pressure gas in the pressure tank body 1 from entering the bottom of the L-shaped tube 3, so that the neutralization reaction at the bottom of the L-shaped tube 3 can proceed in an orderly manner. On the other hand, in the neutralizing ball 1 After rolling down from between the L-shaped tube 3 and the sealing piston 7, the neutralizing balls 11 in the adjacent positions can be driven to move together, so that the neutralizing balls 11 are not easily accumulated locally. The inner wall of the elastic spherical shell 1101 is provided with a plurality of prefabricated grooves 1104, which are evenly distributed on the inner wall of the elastic spherical shell 1101, so that when the elastic spherical shell 1101 is broken, it is easy to form controllable debris, so that the debris of the elastic spherical shell 1101 can be spread on the liquid water and the reaction liquid, thereby increasing the protective effect of the debris of the elastic spherical shell 1101.

[0037] See also Fig.10A plurality of storage fibers 12 are fixedly connected inside the elastic spherical shell 1101, and the plurality of storage fibers 12 are entangled with each other. After the elastic spherical shell 1101 is torn and splashed under the action of the high-pressure neutralizing liquid, the storage fibers 12 can bring out the neutralizing liquid together to form liquid mist, thereby accelerating the reaction speed of the neutralizing liquid and the hazardous gas. The storage fibers 12 include a fiber main body 1201, and the fiber main body 1201 is a hollow structure. When the elastic spherical shell 1101 is splashed with debris, more neutralizing liquid can be brought along to increase the generation effect of the liquid mist. A plurality of through holes 1202 are drilled on the fiber main body 1201, and the plurality of through holes 1202 all penetrate the fiber main body 1201. When the elastic spherical shell 1101 is splashed with debris, more neutralizing liquid can be brought along to increase the generation effect of the liquid mist.

[0038] A sealing ring 4 is connected between the sealing cover 2 and the L-shaped tube 3, and the sealing ring 4 is fixedly connected to the L-shaped tube 3 to increase the sealing effect of the connection between the sealing cover 2 and the L-shaped tube 3, and leakage accidents are not likely to occur. A locking ring 5 is threadedly connected to the outer wall of the L-shaped tube 3, and the locking ring 5 is located at the opening of the L-shaped tube 3 close to one end of the sealing cover 2, which is convenient for the overall installation and disassembly of the L-shaped tube 3. A plurality of finger grooves are chiseled on the outer wall of the locking ring 5 to facilitate the installation and disassembly of the locking ring 5. The L-shaped tube 3 is made of a highly thermally conductive transparent acrylic material, which is convenient for staff to observe and can also quickly dissipate the heat generated by the reaction, reducing the impact on the L-shaped tube 3, so that the L-shaped tube 3 is not easily damaged by fatigue and is not prone to leakage of dangerous gases.

[0039] When the pressure of the dangerous gas stored in the pressure tank body 1 rises due to the increase in temperature, the dangerous gas stored in the pressure tank body 1 will push the positioning member away from the pressure tank body 1, and the neutralizing ball 11 placed between the sealing piston 7 and the grid 8 will roll down to the bottom of the L-shaped tube 3. Due to the separation effect of the sealing piston 7, the air pressure at the bottom of the L-shaped tube 3 will not rise with the increase in the air pressure in the pressure tank body 1. At this time, after the outer wall water-soluble shell 1103 of the elastic spherical shell 1101 is eliminated by liquid water intrusion, the excessive neutralizing liquid filled inside it will push the elastic spherical shell 1101 to the bottom of the L-shaped tube 3. The spherical shell 1101 is burst, and the neutralizing liquid reacts with the high-pressure dangerous gas to produce liquid, so that the air pressure at the bottom of the L-shaped tube 3 is always maintained at a relatively low level. Even if the high-pressure dangerous gas enters the bottom of the L-shaped tube 3, it is not easy to cause the air pressure in the L-shaped tube 3 to be too high, and it is not easy to cause damage to the L-shaped tube 3, and it is not easy to cause leakage of dangerous gas, thereby increasing the overall safety of the L-shaped tube 3. The fragments of the elastic spherical shell 1101 will float on the surface of the liquid water and the reaction liquid, effectively preventing the falling neutralization ball 11 from causing splashing of liquid water and reaction liquid, and it is not easy to cause erosion and damage to the positioning parts.

[0040] In the neutralizing ball 11, on the one hand, the elastic fiber 1102 can effectively slow down the high-pressure gas in the pressure tank body 1 entering the bottom of the L-shaped tube 3, so that the neutralization reaction at the bottom of the L-shaped tube 3 can proceed in an orderly manner. On the other hand, after the neutralizing ball 11 rolls out from between the L-shaped tube 3 and the sealing piston 7, it can drive the adjacent neutralizing balls 11 to move together, so that the neutralizing balls 11 are not prone to local concentrated accumulation. The excavation of the prefabricated groove 1104 makes it easy for the elastic spherical shell 1101 to form controllable debris when it breaks, so that the debris of the elastic spherical shell 1101 can be spread flat on the liquid water and the reaction liquid, thereby increasing the protective effect of the debris of the elastic spherical shell 1101.

[0041] Finally, the storage fiber 12 is designed so that after the elastic spherical shell 1101 is torn and splashed by the high-pressure neutralizing liquid, the storage fiber 12 can bring out the neutralizing liquid together to form liquid mist, thereby accelerating the reaction speed of the neutralizing liquid and the hazardous gas.

[0042] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A pressure vessel for storing hazardous gases, comprising a pressure tank body (1), characterized in that: The open end of the pressure tank body (1) is fixedly connected to a sealing cover (2) matching the pressure tank body, the sealing cover (2) is fixedly connected to an L-shaped tube (3), one end of the L-shaped tube (3) close to the sealing cover (2) passes through the sealing cover (2) and extends into the pressure tank body (1), the pressure tank body (1) is connected to the L-shaped tube (3), the opening of the L-shaped tube (3) close to one end of the pressure tank body (1) is fixedly connected to a fixing ring (6) matching the pressure tank body, a positioning piece is movably connected inside the L-shaped tube (3), a tension spring (10) is fixedly connected between the fixing ring (6) and the positioning piece, and the positioning piece comprises a sealing piston (7) and a mesh (8) whose size matches the L-shaped tube (3). A connecting column (9) is fixedly connected between the sealing piston (7) and the mesh grid (8); a plurality of neutralizing balls (11) are loaded between the sealing piston (7) and the mesh grid (8); the neutralizing balls (11) include an elastic spherical shell (1101); an excess of neutralizing liquid is loaded in the elastic spherical shell (1101); the elastic spherical shell (1101) has an overall tendency to expand; a water-soluble outer shell (1103) is fixedly connected to the outer side of the elastic spherical shell (1101); a plurality of storage fibers (12) are fixedly connected to the inner wall of the elastic spherical shell (1101); the plurality of storage fibers (12) are entangled with each other to form a three-dimensional structure; and liquid water is contained on the bottom plate of the sealing piston (7).

2. A pressure vessel for storing hazardous gases according to claim 1, characterized in that: A plurality of elastic fibers (1102) are fixedly connected to the outer wall of the elastic spherical shell (1101), and the ends of the plurality of elastic fibers (1102) away from the elastic spherical shell (1101) all penetrate the water-soluble outer shell (1103) and extend to the outside of the water-soluble outer shell (1103), and the elastic fibers (1102) on the outside of adjacent neutralizing balls (11) are entangled together.

3. A pressure vessel for storing hazardous gases according to claim 1, characterized in that: The inner wall of the elastic spherical shell (1101) is bored with a plurality of prefabricated grooves (1104), and the plurality of prefabricated grooves (1104) are evenly distributed on the inner wall of the elastic spherical shell (1101).

4. A pressure vessel for storing hazardous gases according to claim 1, characterized in that: A plurality of storage fibers (12) are fixedly connected inside the elastic spherical shell (1101), and the plurality of storage fibers (12) are intertwined with each other.

5. A pressure vessel for storing hazardous gases according to claim 4, characterized in that: The storage fiber (12) comprises a fiber body (1201), and the fiber body (1201) is a hollow structure.

6. A pressure vessel for storing hazardous gases according to claim 5, characterized in that: A plurality of through holes (1202) are bored on the fiber body (1201), and the plurality of through holes (1202) all penetrate the fiber body (1201).

7. A pressure vessel for storing hazardous gases according to claim 1, characterized in that: A sealing ring (4) is connected between the sealing cover (2) and the L-shaped tube (3), and the sealing ring (4) is fixedly connected to the L-shaped tube (3).

8. A pressure vessel for storing hazardous gases according to claim 1, characterized in that: A locking ring (5) is threadedly connected to the outer wall of the L-shaped tube (3), and the locking ring (5) is located at an opening of the L-shaped tube (3) close to one end of the sealing cover (2).

9. A pressure vessel for storing hazardous gases according to claim 8, characterized in that: A plurality of finger grooves are cut on the outer wall of the locking ring (5).

10. A pressure vessel for storing hazardous gases according to claim 1, characterized in that: The L-shaped tube (3) is made of a highly thermally conductive transparent acrylic material.

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