Liquid ammonia storage tank leakage positioning and recycling device based on offshore energy comprehensive utilization platform

Abstract

The utility model discloses a liquid ammonia storage tank leakage positioning and recycling device based on an offshore energy comprehensive utilization platform, which comprises a first covering assembly which covers the surface of a liquid ammonia storage tank and is used for blocking the ammonia leakage position on the liquid ammonia storage tank; the second covering assembly covers the surface of the first covering assembly in a wrapping manner and is used for collecting leaked ammonia gas and performing color development marking on a leakage position; an isolation layer is arranged between the second covering assembly and the first covering assembly, and the isolation layer can enable ammonia gas to penetrate through the first covering assembly and enter the second covering assembly. The double-layer covering assembly is adopted, leakage positions can be quickly blocked, color development of the leakage positions can be achieved, and leakage points can be conveniently detected and maintained in the later period; and leaked ammonia gas is absorbed, so that hidden dangers or risks caused by leakage of the ammonia gas are reduced. Meanwhile, the device adopts a modular structure, can be correspondingly spliced and combined according to the size of the liquid ammonia storage tank, and is wider in application scene; and maintenance is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of ammonia leakage recovery, and in particular relates to a liquid ammonia storage tank leakage positioning and recovery device based on an offshore energy comprehensive utilization platform. Background Art

[0002] The offshore energy comprehensive utilization platform is a cross-border integrated system project aimed at achieving intensive utilization of marine resources. When carrying out chemical production operations on the offshore energy comprehensive utilization platform, liquid ammonia storage tanks are a common equipment. Therefore, it is necessary to conduct sealing inspections on liquid ammonia storage tanks to avoid ammonia leakage, which can cause great harm to humans and the environment.

[0003] In the existing ammonia leakage detection technology, for example, the application number is "2016200033071", and the patent name is "An automatic water spray absorption system for liquid ammonia leakage suppression and expansion". This technical solution uses an ammonia concentration detector to monitor whether there is ammonia leakage, but this method has the disadvantages of inaccurate detection position points, expensive instruments, long detection process time, and great harm to the life and health of operators. At the same time, for the recovery of ammonia after leakage, ammonia is mainly collected by spraying water mist around the storage tank, but this method has the disadvantages of low ammonia absorption efficiency, low airtightness, and the ammonia water after absorption is greatly affected by the environment. In addition, the ammonia water is unstable and is very easy to volatilize again, resulting in secondary leakage pollution. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a liquid ammonia storage tank leakage positioning and recovery device based on an offshore energy comprehensive utilization platform, aiming to solve the following technical problems in the prior art:

[0005] Using conventional ammonia concentration detectors, it is impossible to find the location of ammonia leakage in a timely and accurate manner.

[0006] The conventional method of collecting ammonia by spraying water mist cannot completely collect the leaked ammonia, and the ammonia is prone to secondary volatilization, resulting in secondary leakage pollution.

[0007] The present invention is implemented by the following technical solutions:

[0008] A device for locating and recovering a liquid ammonia storage tank leakage based on an offshore energy comprehensive utilization platform, comprising:

[0009] A first covering component is wrapped and covered on the surface of the liquid ammonia storage tank to block the location where ammonia gas leaks from the liquid ammonia storage tank, wherein the first covering component includes a plurality of mutually independent first chambers, each of which is provided with a plurality of reagent bags, and the reagent bags are filled with a sealant;

[0010] The second covering component, which is wrapped and covers the surface of the first covering component, is used to collect leaked ammonia. The second covering component includes a number of independent second chambers, and a plurality of ammonia absorbents are arranged in each second chamber. The ammonia absorbents corresponding to each other in adjacent second chambers are interconnected. A color-developing positioning member is arranged above the ammonia absorbents in each second chamber, and the color-developing positioning member can show a color after reacting with ammonia.

[0011] An isolation layer is arranged between the second covering component and the first covering component, and the isolation layer can allow ammonia to pass through from the first covering component into the second covering component.

[0012] To optimize the above technical solution, the specific measures taken also include:

[0013] Further, the reagent bag has a long strip cylindrical structure, and the reagent bag forms a first reagent sub-bag and a second reagent sub-bag. The first reagent sub-bag and the second reagent sub-bag are arranged in parallel at height intervals from near to far from the liquid ammonia storage tank in the first chamber.

[0014] Further, the first reagent sub-bag includes an A reagent bin and a B reagent bin arranged at intervals. The sides of the A reagent bin and the B reagent bin away from each other are respectively arranged on the two side walls of the first chamber. The second reagent sub-bag includes a C reagent bin and a D reagent bin arranged at intervals. The sides of the C reagent bin and the D reagent bin away from each other are respectively arranged on the two side walls of the first chamber. The A reagent bin and the C reagent bin are arranged in parallel at an upper and lower interval. The B reagent bin and the D reagent bin are arranged in parallel at an upper and lower interval. The A reagent bin and the D reagent bin are filled with a first reagent, and the B reagent bin and the C reagent bin are filled with a second reagent. The first reagent and the second reagent are mixed to form a sealant. First waterproof and breathable membranes are arranged between the A reagent bin and the B reagent bin, and between the C reagent bin and the D reagent bin.

[0015] Further, crushing teeth are arranged on the sides of the first reagent sub-bag and the second reagent sub-bag close to each other. The crushing teeth on the first reagent sub-bag and the second reagent sub-bag are arranged in a staggered manner, and there is a gap between the tips of the crushing teeth and the adjacent reagent bags.

[0016] Further, the reagent bag is made of polyamide film.

[0017] Further, the first reagent is made of polyurea resin, and the second reagent is a mixed solution of isocyanates.

[0018] Further, the ammonia absorption member includes a conveying pipeline, on which a plurality of through holes are provided. Second waterproof and breathable membranes are provided on both the inner and outer sides of the conveying pipeline. The conveying pipeline passes through the side wall of the second chamber and communicates with an adjacent conveying pipeline. Ammonia absorption liquid is provided inside the conveying pipeline.

[0019] Further, the isolation layer includes a double-layer elastic net and a waterproof and breathable membrane. The double-layer elastic net is horizontally arranged, and both ends of the double-layer elastic net are arranged on the side wall of the first chamber. The waterproof and breathable membrane is arranged between the double-layer elastic nets. The double-layer elastic net is made of synthetic rubber material.

[0020] Further, the color display and positioning member includes a bottom plate and a color display agent. A transparent cover plate is provided at the top of the second chamber. The bottom plate is arranged below the transparent cover plate. A plurality of air holes are provided on the bottom plate. The color display agent is arranged between the bottom plate and the top of the second chamber.

[0021] Further, the color display agent uses red litmus paper.

[0022] Advantages of the present invention:

[0023] Compared with the prior art, a liquid ammonia storage tank leakage positioning and recovery device based on an offshore energy comprehensive utilization platform disclosed by the present invention adopts a double-layer covering assembly. When ammonia leaks, on the one hand, it can quickly block the leakage position and display the color of the leakage position, facilitating the later detection and repair of the leakage point; on the other hand, it can absorb the leaked ammonia, reducing the potential hazards or risks brought by ammonia leakage.

[0024] Both the first covering assembly and the second covering assembly adopted by this device are modular structures, which can be spliced and combined accordingly according to the size of the liquid ammonia storage tank, and the applicable scenarios are broader; at the same time, due to the modular structure, when one module is blocked due to ammonia leakage, during the subsequent maintenance of the leakage point, the structure at the corresponding position can be directly replaced, and the maintenance is more convenient, making it more suitable for offshore platforms. Description of the drawings

[0025] Figure 1 is a schematic structural diagram of a liquid ammonia storage tank leakage positioning and recovery device based on an offshore energy comprehensive utilization platform of the present invention.

[0026] Figure 2 is the present invention Figure 1 Internal structural schematic diagram of part of the structure.

[0027] Figure 3 is the present invention Figure 2 Partial enlarged view of part of the structure.

[0028] Figure 4 is the present inventionFigure 3 Schematic structural diagram of the middle conveying pipeline.

[0029] Figure 5 is the present invention Figure 3 Schematic structural diagram of the isolation layer in the present invention.

[0030] Reference numerals are:

[0031] First covering assembly 10, first chamber 11, first reagent sub-bag 12, A reagent bin 12a, B reagent bin 12b, second reagent sub-bag 13, C reagent bin 13a, D reagent bin 13b, first waterproof and breathable membrane 14, first reagent 15, second reagent 16, crushing teeth 17, second covering assembly 20, second chamber 21, conveying pipeline 22, through hole 221, second waterproof and breathable membrane 23, transparent cover plate 24, bottom plate 25, air hole 251, color developing agent 26, isolation layer 30, double-layer elastic net 31, third waterproof and breathable membrane 32, liquid ammonia storage tank 40, water pump 50. Detailed implementation manners

[0032] In order to clarify the technical solution and working principle of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, any combination can be formed between the following-described embodiments or technical features to form a new embodiment.

[0033] The present invention provides a Figures 1-5 kind of liquid ammonia storage tank 40 leakage positioning and recovery device based on an offshore energy comprehensive utilization platform as shown in the figure, including a first covering assembly 10, which is wrapped and covered on the surface of the liquid ammonia storage tank 40 for plugging the position where ammonia leaks from the liquid ammonia storage tank 40; a second covering assembly 20, which is wrapped and covered on the surface of the first covering assembly 10 for collecting the leaked ammonia and displaying the color of the leakage position; and an isolation layer 30 for allowing ammonia to pass through the first covering assembly 10 and enter the second covering assembly 20.

[0034] As Figures 2-3 shown, the first covering assembly 10 includes a plurality of mutually independent first chambers 11, and each first chamber 11 is provided with a plurality of reagent bags, and each reagent bag is filled with a sealant. The sealant includes a first reagent 15 and a second reagent 16. The first reagent 15 is a polyurea resin, and the second reagent 16 is a mixed solution of isocyanate.

[0035] The reagent bag has a long strip cylindrical structure, and the reagent bag forms a first reagent sub-bag 12 and a second reagent sub-bag 13. The first reagent sub-bag 12 and the second reagent sub-bag 13 are arranged in parallel at intervals in height from near to far from the liquid ammonia storage tank 40 in the first chamber 11.

[0036] Specifically, the first reagent sub-bag 12 includes an A reagent chamber 12a and a B reagent chamber 12b which are spaced apart, and the sides of the A reagent chamber 12a and the B reagent chamber 12b which are away from each other are respectively arranged on the two side walls of the first chamber 11. The second reagent 16 sub-bag 13 includes a C reagent chamber 13a and a D reagent chamber 13b which are spaced apart, and the sides of the C reagent chamber 13a and the D reagent chamber 13b which are away from each other are respectively arranged on the two side walls of the first chamber 11. The A reagent chamber 12a and the C reagent chamber 13a are spaced apart and parallel to each other, and the B reagent chamber 12b and the D reagent chamber 13b are spaced apart and parallel to each other. The A reagent chamber 12a and the D reagent chamber 13b are filled with the first reagent 15, and the B reagent chamber 12b and the C reagent chamber 13a are filled with the second reagent 16. The first reagent 15 and the second reagent 16 are mixed to form a sealant. The first reagent 15 adopts polyurea resin, and the second reagent 16 adopts a mixed solution of isocyanate. The ports of reagent chamber A 12a and reagent chamber B 12b, and reagent chamber C 13a and reagent chamber D 13b close to each other are made of polyamide membrane material; a first waterproof and breathable membrane 14 is provided between reagent chamber A 12a and reagent chamber B 12b, and between reagent chamber C 13a and reagent chamber D 13b.

[0037] When the leaked ammonia enters the first chamber 11, since the second reagent sub-bag 13 is closer to the liquid ammonia storage tank 40, the ammonia will first enter through the first waterproof and breathable membrane 14 below the C reagent chamber 13a and the D reagent chamber 13b of the second reagent sub-bag 13, and then the ammonia will react with the ports of the C reagent chamber 13a and the D reagent chamber 13b close to each other, which are made of polyamide membrane material, and the ammonia will destroy the ports, and then the polyurea resin and isocyanate in the C reagent chamber 13a and the D reagent chamber 13b will mix and react with each other to generate a first layer of sealant. While the sealant is generated, its volume will expand to open the C reagent chamber 13a and the D reagent chamber 13b.

[0038] Then the ammonia gas will pass through the first waterproof and breathable membrane 14 above the C reagent chamber 13a and the D reagent chamber 13b and enter the channel between the A reagent chamber 12a and the B reagent chamber 12b of the first reagent sub-bag 12. Similarly, the ammonia gas will react with the ports between the A reagent chamber 12a and the B reagent chamber 12b that are close to each other. The ports are also made of polyamide membrane material. The polyurea resin and isocyanate in the A reagent chamber 12a and the B reagent chamber 12b mix and react with each other to generate a second layer of sealant. While the sealant is generated, its volume will expand and open the A reagent chamber 12a and the B reagent chamber 12b.

[0039] Crushing teeth 17 are provided on the side of the first reagent sub-bag 12 and the second reagent sub-bag 13 close to each other. The crushing teeth 17 on the first reagent sub-bag 15 and the second reagent sub-bag 13 are staggered, and a gap is left between the tip of the crushing tooth 17 and the adjacent reagent bag.

[0040] When the first reagent sub - bag 12 and the second reagent sub - bag 13 expand, the breaking teeth 17 on the first reagent sub - bag 12 and the second reagent sub - bag 13 will act on the corresponding reagent sub - bags. At the same time, combined with the structure of the upper - lower dislocation distribution of the reagent sub - bags filled with different reagents, the mixing rate between the polyurea resin solution and the isocyanate solution is increased, and the sealing effect is better.

[0041] In order for ammonia gas to smoothly pass through the isolation layer 30 to the second covering component 20, in this embodiment, the isolation layer 30 includes a double - layer elastic net 31 and a third waterproof and breathable membrane 32. The double - layer elastic net 31 is horizontally arranged, both ends of the double - layer elastic net 31 are arranged on the side wall of the first chamber 11, the third waterproof and breathable membrane 32 is arranged between the double - layer elastic net 31, and the double - layer elastic net 31 is made of synthetic rubber material.

[0042] The second covering component 20 includes a number of mutually independent second chambers 21. A plurality of ammonia absorption members are arranged in each second chamber 21. The ammonia absorption members corresponding to each other in adjacent second chambers 21 are correspondingly connected. Above the ammonia absorption members in each second chamber 21, a color - showing positioning member is arranged. The color - showing positioning member can show color after reacting with ammonia gas. A transparent cover plate 24 is arranged at the top of the second chamber 21 to facilitate showing the color.

[0043] The ammonia absorption member includes a conveying pipeline 22. A number of through - holes 221 are opened on the conveying pipeline 22. Second waterproof and breathable membranes 23 are arranged on both the inner side and the outer side of the conveying pipeline 22. The conveying pipeline 22 passes through the side wall of the second chamber 21 and is connected to the adjacent conveying pipeline 22. Ammonia absorption liquid is arranged inside the conveying pipeline 22, and the ammonia absorption liquid uses seawater.

[0044] In order to better maintain the efficiency of seawater in absorbing ammonia gas, a water pump 50 is also arranged at one end of the liquid ammonia storage tank 40. The conveying pipeline 22 is connected to the water pump 50, and the ammonia water after absorbing ammonia gas is regularly discharged through the water pump 50 to replace the corresponding seawater.

[0045] The color - showing positioning member includes a bottom plate 25 and a color - showing agent 26. The bottom plate 25 is arranged below the top inside the second chamber 21. A number of air holes 251 are arranged on the bottom plate 25. The color - showing agent 26 is arranged between the bottom plate 25 and the top of the second chamber 21, and the color - showing agent 26 uses red litmus paper. Part of the ammonia gas entering the second chamber 21 is absorbed by the ammonia absorption liquid, and part of it will react with the color - showing positioning member.

[0046] Ammonia will enter the second chamber 21 through the isolation layer 30, and then the ammonia will pass through the second waterproof and breathable membrane 23 and enter the interior of the delivery pipe 22 from the through hole 221, and then be absorbed by the ammonia absorbent liquid. At the same time, when the first reagent 15 and the second reagent 16 are mixed and reacted to form a sealant, the isolation layer 30 will be squeezed, the air pressure in the second chamber 21 will increase, which will accelerate the rate of ammonia entering the delivery pipe 22 and shorten the contact reaction time between the ammonia and the color developer 26.

[0047] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications should be regarded as the protection scope of the present invention.

Claims

1. A leakage positioning and recovery device for a liquid ammonia storage tank based on an offshore energy comprehensive utilization platform, which is applied to a liquid ammonia storage tank, and is characterized in that: including a first covering component, which is wrapped on the surface of the liquid ammonia storage tank for plugging the positions where ammonia leaks from the liquid ammonia storage tank. The first covering component includes a number of independent first chambers, and a plurality of reagent bags are arranged in each first chamber, and sealant is filled in the reagent bags; a second covering component, which is wrapped on the surface of the first covering component for collecting the leaked ammonia. The second covering component includes a number of independent second chambers, and a plurality of ammonia absorption elements are arranged in each second chamber. The ammonia absorption elements corresponding to each other in adjacent second chambers are interconnected. A color-developing positioning element is arranged above the ammonia absorption element in each second chamber, and the color-developing positioning element can show a color after reacting with ammonia; an isolation layer is arranged between the second covering component and the first covering component, and the isolation layer can allow ammonia to pass through the first covering component and enter the second covering component.

2. The ammonia storage tank leakage positioning and recovery device based on the offshore energy comprehensive utilization platform according to claim 1, characterized in that: The reagent bag has a long strip cylindrical structure, and forms a first reagent sub-bag and a second reagent sub-bag. The first reagent sub-bag and the second reagent sub-bag are arranged in parallel at intervals in height from near to far from the liquid ammonia storage tank in the first chamber.

3. The leakage positioning and recovery device for a liquid ammonia storage tank based on an offshore energy comprehensive utilization platform according to claim 2, wherein: The first reagent sub-bag includes an A reagent bin and a B reagent bin arranged at intervals. The sides of the A reagent bin and the B reagent bin away from each other are respectively arranged on the two side walls of the first chamber. The second reagent sub-bag includes a C reagent bin and a D reagent bin arranged at intervals. The sides of the C reagent bin and the D reagent bin away from each other are respectively arranged on the two side walls of the first chamber. The A reagent bin and the C reagent bin are arranged in parallel at intervals up and down, and the B reagent bin and the D reagent bin are arranged in parallel at intervals up and down. The A reagent bin and the D reagent bin are filled with a first reagent, and the B reagent bin and the C reagent bin are filled with a second reagent. The first reagent and the second reagent are mixed to form a sealant. A first waterproof and breathable membrane is arranged between the A reagent bin and the B reagent bin, and between the C reagent bin and the D reagent bin.

4. The leakage positioning and recovery device for the liquid ammonia storage tank based on the offshore energy comprehensive utilization platform according to claim 3, wherein: Crushing teeth are arranged on the sides of the first reagent sub-bag and the second reagent sub-bag close to each other. The crushing teeth on the first reagent sub-bag and the second reagent sub-bag are arranged in a staggered manner, and a gap is left between the tip of the crushing tooth and the adjacent reagent bag.

5. The leakage positioning and recovery device for a liquid ammonia storage tank based on an offshore energy comprehensive utilization platform according to claim 4, characterized in that: The ports of the A reagent bin and the B reagent bin, and the C reagent bin and the D reagent bin close to each other are made of polyamide film material.

6. The ammonia storage tank leakage positioning and recovery device based on the offshore energy comprehensive utilization platform according to claim 5, characterized in that: The first reagent is a polyurea resin solution, and the second reagent is an isocyanate solution.

7. The leakage positioning and recovery device for the liquid ammonia storage tank based on the offshore energy comprehensive utilization platform according to claim 1, characterized in that: The ammonia absorption element includes a conveying pipeline, and a number of through holes are opened on the conveying pipeline. Second waterproof and breathable membranes are arranged on the inner side and the outer side of the conveying pipeline. The conveying pipeline passes through the side wall of the second chamber and is connected to the adjacent conveying pipeline. Ammonia absorption liquid is arranged inside the conveying pipeline.

8. A leakage positioning and recovery device for a liquid ammonia storage tank based on an offshore energy comprehensive utilization platform according to claim 1, characterized in that: The isolation layer includes a double-layer elastic net and a waterproof and breathable membrane. The double-layer elastic net is arranged horizontally, and both ends of the double-layer elastic net are arranged on the side walls of the first chamber. The waterproof and breathable membrane is arranged between the double-layer elastic nets, and the double-layer elastic net is made of synthetic rubber material.

9. The leakage positioning and recovery device for a liquid ammonia storage tank based on an offshore energy comprehensive utilization platform according to claim 1, characterized in that: The color-developing positioning member includes a bottom plate and a color-developing agent. A transparent cover plate is provided at the top of the second chamber. The bottom plate is disposed below the transparent cover plate. A plurality of air holes are provided on the bottom plate. The color-developing agent is disposed between the bottom plate and the top of the second chamber.

10. The leakage positioning and recovery device for a liquid ammonia storage tank based on an offshore energy comprehensive utilization platform according to claim 9, characterized in that: The color-developing agent uses red litmus paper.

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