CN117504530A

CN117504530A - High-efficiency oxygen production equipment and process suitable for calcium molecular sieve

Info

Publication number: CN117504530A
Application number: CN202311514060.0A
Authority: CN
Inventors: 张道雨; 张振华; 赵世闯; 宰永阳
Original assignee: Suzhou Duer Oxygen Equipment Co ltd
Current assignee: Suzhou Duer Oxygen Equipment Co ltd
Priority date: 2023-11-14
Filing date: 2023-11-14
Publication date: 2024-02-06

Abstract

The embodiment of the specification provides high-efficiency oxygen production equipment and process suitable for a calcium molecular sieve, wherein the equipment comprises an equipment body, the equipment body is formed by encircling an upper end socket, a lower end socket and an outer cylinder, and an outer hole cylinder, a middle net rack, an inner hole cylinder, an inner cylinder and an air bag compressing device are arranged in the equipment body; the inner hole cylinder is sleeved outside the inner cylinder body, the middle net rack is sleeved outside the inner hole cylinder, and the outer hole cylinder is sleeved outside the middle net rack; the process comprises outputting raw air from a raw air source, and filtering the raw air through a filter to remove mechanical particulate impurities; compressing and boosting the filtered raw material air to a set working pressure, and cooling to a set temperature to obtain pretreated air; conveying the pretreated air into high-efficiency oxygen generating equipment through an air inlet device; the pretreated air passes through a water-absorbing and drying molecular sieve in the high-efficiency oxygen-making equipment, water and impurity gas in the pretreated air are absorbed, then passes through the oxygen-making molecular sieve, nitrogen components are absorbed, and the residual oxygen components are output through an air outlet device.

Description

High-efficiency oxygen production equipment and process suitable for calcium molecular sieve

Technical Field

The specification relates to the technical field of oxygen production, in particular to high-efficiency oxygen production equipment and process suitable for a calcium molecular sieve.

Background

The calcium molecular sieve is a high-efficiency oxygen-making molecular sieve, and can reach 27.75cm due to the large nitrogen adsorption capacity ³ And/g (adsorption temperature 25+/-1 ℃, pressure 760 mmHg), the nitrogen-oxygen separation coefficient is high and can reach 4.3 (adsorption temperature 25+/-1 ℃, pressure 760 mmHg), the crushing resistance is high (more than or equal to 13.5N), the economy is relatively high, and the method is widely applied to the small-sized VPSA and PSA oxygen production processes. Small VPSA oxygen production processes typically employ axial flow oxygen production equipment. The diameter of the oxygen generating equipment is larger, and the thickness of the bed layer is thicker. Resulting in a bottom gas flow which is difficult to evenly distribute. So that the partial area air flow is concentrated and the other partial area air flow is dispersed. Meanwhile, after the oxygen making equipment is manufactured, the filling height of the molecular sieve bed layer is determined, the path height of the air flow flowing through the molecular sieve bed layer is the same, so that the molecular sieve at the position where the air flow is concentrated is quickly adsorbed and saturated, the saturated upper part of the bottom of the molecular sieve bed layer at the position where the air flow is dispersed is not started to work, the adsorption step is finished, the molecular sieve utilization rate is low, the fluctuation of the oxygen purity of the product is also large, and the quality of a user product is influenced. The size of the oxygen generating equipment is large, the manufacturing difficulty is limited by road height limitation, the equipment transportation is a big problem, and the manufacturing quality is difficult to ensure if the equipment is put on site. The axial flow molecular sieve has thick bed thickness, long airflow flowing path, high friction resistance, high pressure drop, high energy consumption for unit oxygen production and easy pulverization.

Under the large environment of unit oxygen production energy consumption and occupied area in the current opinion, the original calcium molecular sieve oxygen production process is gradually behind, the requirement of large-scale oxygen utilization condition cannot be met, and the method can only be used in a small-scale oxygen production process and has a small application range.

Therefore, it is desirable to provide a high-efficiency oxygen production device and process suitable for the calcium molecular sieve, which fully exert the oxygen production performance of the calcium molecular sieve and expand the application range thereof.

Disclosure of Invention

One or more embodiments of the present disclosure provide a high efficiency oxygen plant suitable for use with a calcium molecular sieve. The high-efficiency oxygen production equipment comprises: the equipment body is formed by enclosing an upper sealing head, a lower sealing head and an outer cylinder body, and an outer hole cylinder, a middle net rack, an inner hole cylinder, an inner cylinder body and an air bag compressing device are arranged in the equipment body; the inner hole cylinder is sleeved outside the inner cylinder body, the middle net rack is sleeved outside the inner hole cylinder, and the outer hole cylinder is sleeved outside the middle net rack; a first layer of cavity is formed between the outer cylinder body and the outer hole cylinder, and the first layer of cavity is communicated with an air inlet device; a second layer of cavity is formed between the outer hole cylinder and the middle net rack, and a water-absorbing and drying molecular sieve is arranged in the second layer of cavity; a third layer of cavity is formed between the middle net rack and the inner hole barrel, and an oxygen-making molecular sieve is arranged in the third layer of cavity; a fourth layer of cavity is formed between the inner hole cylinder and the inner cylinder body, and the fourth layer of cavity is communicated with the air outlet device.

In some embodiments, the air inlet device comprises an air inlet short pipe and a connecting piece, wherein the air inlet short pipe is connected with a raw material air source, the connecting piece is respectively connected with the air inlet short pipe and the lower seal head, the connecting piece is conical, and the cross-sectional area of the connecting piece is gradually increased from being close to the air inlet short pipe to being far away from the air inlet short pipe.

In some embodiments, the air outlet device comprises an air outlet pipe, the air outlet pipe is communicated with the fourth layer cavity, and the air outlet pipe penetrates through the lower seal head to be connected with an oxygen collecting device.

In some embodiments, the outer bore comprises a hollow cylindrical first bore with a plurality of small holes formed therein, the first bore having an open porosity of greater than or equal to 50%; the inner hole barrel comprises a hollow cylindrical second hole barrel, a plurality of small holes are formed in the second hole barrel, and the opening rate of the second hole barrel is greater than or equal to 50%.

In some embodiments, the middle net rack comprises a net body and a rack body for supporting the net body; the net body is connected to the frame body, and the net body is cylindrical.

In some embodiments, a support assembly is disposed within the lower head; the support component is connected with at least one of the outer hole cylinder, the middle net rack, the inner hole cylinder and the inner cylinder body, and the support component provides support for the water-absorbing and drying molecular sieve and the oxygen-generating molecular sieve.

In some embodiments, the air bag compressing device is disposed in the upper end enclosure, and the air bag compressing device includes an air bag, and the air bag is elastically connected with at least one of the outer cylinder, the outer hole cylinder, the middle net frame, the inner hole cylinder, and the inner cylinder.

One or more embodiments of the present disclosure provide a high-efficiency oxygen production process suitable for a calcium molecular sieve, using the aforementioned high-efficiency oxygen production apparatus, the high-efficiency oxygen production process including the steps of: s1: outputting raw material air through a raw material air source, and filtering mechanical particle impurities in the raw material air through a filter; s2: compressing and boosting the filtered raw material air to a set working pressure, and cooling to a set temperature to obtain pretreated air; s3: conveying the pretreated air into the high-efficiency oxygen generating equipment through an air inlet device;

s4: and passing the pretreated air through a water-absorbing and drying molecular sieve in the high-efficiency oxygen-making equipment, adsorbing water and impurity gas in the pretreated air, passing through an oxygen-making molecular sieve, adsorbing nitrogen components, and outputting the residual oxygen components through an air outlet device.

In some embodiments, in the step S4, two efficient oxygen generating devices are used to alternately operate; a valve switching system is connected between the two high-efficiency oxygen generating devices, the valve switching system is used for controlling the pretreated air to enter one of the two high-efficiency oxygen generating devices to perform oxygen generating operation, and the other one of the two high-efficiency oxygen generating devices is used for performing desorption operation.

In some embodiments, the process further comprises: and introducing oxygen produced by at least one of the two high-efficiency oxygen producing devices into an oxygen balance buffer device.

Drawings

The present specification will be further elucidated by way of example embodiments, which will be described in detail by means of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

FIG. 1 is a schematic diagram of a high efficiency oxygen plant suitable for use with a calcium molecular sieve according to some embodiments of the present disclosure;

FIG. 2 is a schematic illustration of the installation of an outer bore cylinder, a middle net mount, an inner bore cylinder, an inner barrel, according to some embodiments of the present disclosure;

FIG. 3 is a schematic flow diagram of a high efficiency oxygen generation process suitable for use with a calcium molecular sieve according to some embodiments of the present disclosure;

FIG. 4 is a schematic diagram of the connection of two high efficiency oxygen plants shown in accordance with some embodiments of the present description;

fig. 5 is a schematic view of a movable flap according to some embodiments of the present application.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present specification, and it is possible for those of ordinary skill in the art to apply the present specification to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

It will be appreciated that "system," "apparatus," "unit" and/or "module" as used herein is one method for distinguishing between different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

As used in this specification and the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

A flowchart is used in this specification to describe the operations performed by the system according to embodiments of the present specification. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes.

Fig. 1 is a schematic diagram of a high efficiency oxygen plant suitable for use with a calcium molecular sieve according to some embodiments of the present disclosure. Fig. 2 is a schematic illustration of the installation of an outer bore cylinder, a middle net mount, an inner bore cylinder, an inner barrel, according to some embodiments of the present description.

As shown in fig. 1, the high-efficiency oxygen generating apparatus 1000 includes an apparatus body formed by an upper end socket 1080, a lower end socket 1090 and an outer cylinder 1030, and an outer cylinder 1040, a middle net rack 1050, an inner cylinder 1060, an inner cylinder 1070, an air bag compacting device 1100 and the like are provided in the apparatus body.

In some embodiments, the inner bore barrel 1060 is nested outside the inner barrel 1070, the middle net rack 1050 is nested outside the inner bore barrel 1060, and the outer bore barrel 1040 is nested outside the middle net rack 1050. For further details regarding upper head 1080, lower head 1090, outer barrel 1030, outer barrel 1040, middle net mount 1050, inner barrel 1060, inner barrel 1070, and balloon compression device 1100, see description below.

In some embodiments, a first layer of cavities 1110 is formed between the outer cylinder 1030 and the outer bore 1040, the first layer of cavities 1110 being in communication with the gas inlet device 1010, the first layer of cavities 1110 being operable to disperse the gas to provide for uniform distribution of the gas; a second layer of cavity 1120 is formed between the outer hole cylinder 1040 and the middle net rack 1050, and a water-absorbing and drying molecular sieve 1150 is arranged in the second layer of cavity 1120; a third layer cavity 1130 is formed between the middle net rack 1050 and the inner hole cylinder 1060, and an oxygen-making molecular sieve 1160 is arranged in the third layer cavity 1130; a fourth cavity 1140 is formed between the inner bore tube 1060 and the inner barrel 1070, the fourth cavity 1140 being in communication with the air outlet device 1020. In some embodiments, air may enter the first layer cavity 1110 from the air intake device, enter the second layer cavity 1120 through the outer cylinder 1040, enter the third layer cavity 1130 through the middle net rack 1050 after adsorbing water and impurities through the water-absorbing and drying molecular sieve 1050, enter the fourth layer cavity 1140 through the inner cylinder 1060, and exit the air outlet device 1020.

The gas inlet 1010 refers to a structure capable of changing, controlling, and/or directing the direction of gas flow. The gas inlet 1010 may include at least one passage through which gas can pass. In some embodiments, the gas inlet 1010 may direct the flow of gas into the device body. In some embodiments, the air inlet 1010 may be connected to at least one side and/or at least one end of the apparatus body. In some embodiments, the air intake 1010 may be connected to a lower head 1090.

In some embodiments, the intake 1010 may include an intake spool 1011 and a connection 1012. In some embodiments, the inlet spool 1011 may be connected to a source of raw material gas (not shown). A source of raw material gas is used to supply air, and exemplary sources of raw material gas include at least one of a gas tank, a roots blower, an air pump, and the like. In some embodiments, the connection 1012 may be connected to the intake spool 1011 and the lower head 1090, respectively. In some embodiments, the connection 1012 tapers such that the cross-sectional area of the connection 1012 increases progressively from a direction toward the intake spool 1011 to a direction away from the intake spool 1011. The cross section refers to the plane of the connector 1012 that is cut by a plane perpendicular to the axis of the connector 1012. The connector 1012 may act to diffuse the gas, facilitating a uniform flow of gas into the bottom head 1090. And can play a role in reducing the flow rate of gas to a certain extent, and is beneficial to increasing the contact time of the water-absorbing and drying molecular sieve 1150 and the oxygen-making molecular sieve 1160 with the gas, thereby improving the absorption effect of the water-absorbing and drying molecular sieve 1150 and the oxygen-making molecular sieve 1160. In some embodiments, the intake spool 1011 may be cylindrical. The intake spool 1011 may be disposed coaxially with the connection 1012 (e.g., axis a in fig. 1).

The air outlet 1020 refers to a structure capable of changing, controlling, and/or directing the direction of the flow of air. The gas outlet means 1020 may comprise at least one channel through which gas can pass. In some embodiments, the gas outlet 1020 may direct the flow of gas out of the apparatus body. In some embodiments, the air outlet 1020 may be connected to a lower head 1090. The channels of the air outlet means 1020 are isolated from the channels of the air inlet means 1010.

In some embodiments, the air outlet device 1020 may include an air outlet tube 1021. In some embodiments, the outlet tube 1021 communicates with the fourth layer cavity 1140, and the gas in the fourth layer cavity 1140 may be exhausted through the outlet tube 1021. In some embodiments, the outlet tube 1021 passes through the lower head 1090 to connect with an oxygen collection device (not shown). In some embodiments, one end of the outlet tube 1021 may be connected to the oxygen collection device through the connector 1012.

In some embodiments, inner barrel 1070 may be a solid or hollow structure. In some embodiments, when inner barrel 1070 is hollow in structure, inner barrel 1070 may also be in communication with outlet tube 1021.

In some embodiments, the oxygen collection device may include an oxygen balance buffer device 3000. The oxygen balance buffer device 3000 is used to realize a smooth output of oxygen. For more details regarding the oxygen balance buffer device 3000, see the description below.

The air inlet device and the air outlet device can be integrated by enabling the air outlet pipe to penetrate through the lower seal head, so that the total occupied space of the air inlet device and the air outlet device can be reduced, and the integral structure of the high-efficiency oxygen generating equipment is simplified.

The outer cylinder 1030 refers to a cylindrical structure having an internal cavity. The outer cylinder 1030 can be used as a mounting base, with an upper head 1080 mounted above the outer cylinder 1030 and a lower head 1090 mounted below the outer cylinder 1030, thereby forming an apparatus body with an interior cavity. In some embodiments, the internal cavity of outer barrel 1030 may be used to mount at least one of outer barrel 1040, middle net mount 1050, inner barrel 1060, inner barrel 1070, and the like.

In some embodiments, the cross-sectional area of the outer barrel 1030 gradually decreases in a direction (e.g., the X-direction in fig. 1) in which the lower head 1090 points toward the upper head 1080. Correspondingly, the cross-sectional area of the first-layer cavity 1110 gradually decreases, so that the end of the first-layer cavity 1110, which is close to the upper end socket 1080, can squeeze and fold the gas entering the first-layer cavity 1110, and the phenomenon that the gas pressure at the end, which is close to the upper end socket 1080, is insufficient to reduce the flow rate entering the second-layer cavity 1120 is avoided.

The outer barrel 1040 refers to a cylindrical structure having a cavity. In some embodiments, outer barrel 1040 is disposed within outer barrel 1030, and a first layer of cavity 1110 can be formed between outer barrel 1040 and outer barrel 1030. In some embodiments, the first layer cavity 1110 may be in communication with the air intake 1010. In some embodiments, outer barrel 1040 may be disposed coaxially with outer barrel 1030 (e.g., axis a in fig. 1). For more details see the relevant description below.

The middle net rack 1050 refers to a rack having a net structure. In some embodiments, the outer pore tube 1040 is sleeved outside the middle net rack 1050, a second layer of cavity 1120 can be formed between the middle net rack 1050 and the outer pore tube 1040, and a water-absorbing and drying molecular sieve 1150 is arranged in the second layer of cavity 1120. In some embodiments, the middle mesh frame 1050 may be a cylindrical structure, and the middle mesh frame 1050 may be disposed coaxially with the outer bore 1040 (e.g., axis a in fig. 1).

In some embodiments, as shown in fig. 2, the middle net rack 1050 may include a net body 1051 and a frame body 1052 for supporting the net body 1051.

The mesh 1051 is a net-like structure. The mesh 1051 can be used to isolate the water-absorbing dry molecular sieve 1150 from the oxygen-generating molecular sieve 1160. And gas may be allowed to pass from the second layer cavity 1120 into the third layer cavity 1130. In some embodiments, web 1051 may be a cylindrical structure, with web 1051 coaxial with outer bore 1040 (e.g., axis a in fig. 1). In some embodiments, mesh 1051 may be made of a corrosion resistant material. For example, the corrosion-resistant stainless steel wire mesh is adopted, so that the mesh body has certain corrosion resistance and certain strength, the shape accuracy (for example, the shape of the mesh body 1051 is kept to be cylindrical) of the mesh body 1051 can be kept, and the influence on the uniform distribution and the normal use of the water-absorbing and drying molecular sieve 1150 and the oxygen-generating molecular sieve 1160 caused by the collapse and the deformation of the mesh body 1051 is avoided.

The frame 1052 can be used to support the mesh 1051. In some embodiments, the frame 1052 may be coupled to the lower head 1090 and/or the outer barrel 1030.

The water-absorbent dry molecular sieve 1150 refers to a molecular sieve having a water-absorbent function. Can be used to absorb water vapor and other gases (e.g., carbon dioxide, etc.) in the air. Molecular sieves refer to adsorbents or membranes having uniform micropores, the pore size of which is comparable to the size of a typical molecule, through which various fluid molecules can be screened. Molecular sieves are composed primarily of silicon, aluminum, oxygen, and/or some other metal cations. In some embodiments, a plurality of water-absorbing dry molecular sieves 1150 may be stacked in a layered structure within the second layer cavity 1120.

The inner bore tube 1060 refers to a tubular structure having a cavity. In some embodiments, the middle net rack 1050 is sleeved outside the inner hole cylinder 1060, a third layer of cavity 1130 can be formed between the inner hole cylinder 1060 and the middle net rack 1050, and an oxygen-making molecular sieve 1160 is arranged in the third layer of cavity 1130. In some embodiments, the inner bore barrel 1060 may be a cylindrical structure, and the inner bore barrel 1060 may be disposed coaxially with the middle wire frame 1050 (e.g., axis a in fig. 1). See more of

The oxygen-generating molecular sieve 1160 is a molecular sieve that can adsorb nitrogen and other gases in the air, thereby separating oxygen in the air. The type of metal ions exposed by the molecular sieve crystals determines the molecular sieve performance and selectivity, and the metal ions exposed by the oxygen-making molecular sieve crystals are cations. Both the oxygen and nitrogen molecules have a quadrupole moment, but the quadrupole moment-0.4 esu of the oxygen molecule is much smaller (substantially 4 times different) than the quadrupole moment-1.5 esu of the nitrogen molecule, so that the acting force between the nitrogen molecule and the exposed metal cations of the oxygen-making molecular sieve crystal is stronger, and the nitrogen molecule can be preferentially adsorbed. In some embodiments, a plurality of oxygen-generating molecular sieves 1160 may be stacked in a layered structure within the third layer cavity 1130.

The inner barrel 1070 refers to a cylindrical structure having a cavity. In some embodiments, the inner bore barrel 1060 is sleeved outside the inner barrel 1070, and a fourth layer of cavity 1140 can be formed between the inner barrel 1070 and the inner bore barrel 1060. In some embodiments, the inner barrel 1070 may be disposed coaxially with the inner bore barrel 1060 (e.g., axis a in fig. 1). In some embodiments, the outer barrel 1030, outer barrel 1040, the middle mesh frame 1050, inner barrel 1060, and inner barrel 1070 may be coaxially disposed (e.g., axis a in fig. 1), which may be vertically disposed. In some embodiments, the fourth layer cavity 1140 communicates with the gas outlet device 1020 and the gas within the fourth layer cavity 1140 may be exhausted through the gas outlet device 1020.

An upper closure 1080 can be used to close the upper end of the outer barrel 1030. In some embodiments, the upper head 1080 may be sealingly connected to the upper end of the outer barrel 1030.

A lower head 1090 can be used to close the lower end of the outer cylinder 1030. In some embodiments, a lower head 1090 may be sealingly connected to the lower end of the outer barrel 1030. In some embodiments, the first layer cavity 1110, the second layer cavity 1120, the third layer cavity 1130, and the fourth layer cavity 1140 are located between the upper head 1080 and the lower head 1090, respectively. In some embodiments, the lower head 1090 may include an inlet in communication with the first layer cavity 1110.

In some embodiments, as shown in fig. 2, a support assembly 1091 is provided within the lower head 1090. The support assembly 1091 is coupled to at least one of the outer barrel 1040, the middle net mount 1050, the inner barrel 1060, and the inner barrel 1070.

The support assembly 1091 can be used to support one or more of the air outlet 1020, the outer barrel 1030, the outer barrel 1040, the middle net mount 1050, the inner barrel 1060, and the inner barrel 1070. In some embodiments, the support assembly 1091 may be a plate-like structure that is compatible with the cross-section of the outer barrel 1030. In some embodiments, support assembly 1091 may be sealingly coupled to one or more of outer barrel 1040, middle net mount 1050, inner barrel 1060, and inner barrel 1070. So that the support assembly 1091 can seal the ends of the second, third and fourth layer cavities 1120, 1130 and 1140 adjacent the support assembly 1091. Air entering through the air inlet device 1010 can be prevented from directly entering the second layer cavity 1120, the third layer cavity 1130 and the fourth layer cavity 1140 without passing through molecular sieves, so that the oxygen production effect can be ensured. In some embodiments, the support assembly 1091 may provide support for the water-absorbing dry molecular sieve 1150 and the oxygen-generating molecular sieve 1160. In some embodiments, the frame 1052, the first mount 1043, the second mount 1063, and the like may be respectively sealingly coupled to the support assembly 1091.

Balloon compression device 1100 can be used to close or partially close second layer cavity 1120 and/or third layer cavity 1130.

In some embodiments, the second layer of cavities 1120 may be filled with water-absorbing dry molecular sieves 1150 and the third layer of cavities 1130 may be filled with oxygen-generating molecular sieves 1160. The balloon compression device 1100 may be used to compress one or more of the outer pore tube 1040, the middle mesh tube 1050, the inner pore tube 1060, the water-absorbing dry molecular sieve 1150, and the oxygen-generating molecular sieve 1160.

In some embodiments, balloon compression device 1100 may be disposed within upper head 1080. The airbag compaction apparatus 1100 may be elastically deformed to compact the molecular sieve. In some embodiments, balloon compression device 1100 may include a balloon. The balloon is resiliently coupled to at least one of the outer barrel 1030, the outer barrel 1040, the middle net mount 1050, the inner barrel 1060, and the inner barrel 1070.

The bladder can be used to close or partially close the second layer cavity 1120 and/or the third layer cavity 1130. In some embodiments, the balloon may have elasticity. In some embodiments, the airbag has an inflation port. The gas in the air bag can be supplemented into the air bag through the charging hole, or the gas in the air bag can be pumped out from the charging hole. In some embodiments, the gas within the balloon may be one of dry nitrogen, air, and oxygen.

Through setting up gasbag closing device, after the molecular sieve appears naturally subsides, because gasbag elastic material's ductility, the gasbag can compress tightly the molecular sieve voluntarily, eliminates the space that the molecular sieve left after naturally subsides, avoids the molecular sieve to take place peristaltic wear because of having the space.

Through making the vertical setting of axis of outer barrel, make gas circulate gradually and prepare oxygen along first layer cavity, second floor cavity, third floor cavity and fourth floor cavity, the relative area of gas flow through molecular sieve increases, and the velocity of flow of gas can reduce for the impact of gas to molecular sieve reduces, is favorable to preventing the molecular sieve chalking under the effect of air current impact. When the gas flows through the third layer of cavity, the gas is gathered from outside to inside, so that the gas can be ensured to completely pass through the oxygen-making molecular sieve, and the nitrogen in the gas can be fully absorbed, and the utilization rate of the oxygen-making molecular sieve can be improved. Meanwhile, the area of the molecular sieve bed layer (for example, a layered structure formed by stacking water-absorbing and drying molecular sieves and a layered structure formed by stacking oxygen-making molecular sieves) can be increased, the thickness of the molecular sieve bed layer can be reduced, the resistance of the molecular sieve bed layer to air flow can be reduced, correspondingly, a power source can be reduced to do work, and energy is saved. Through making gas circulate gradually along first layer cavity, second floor cavity, third layer cavity and fourth layer cavity, the air current direction is perpendicular with molecular sieve self gravity direction, can reduce the molecular sieve and take place the risk of peristaltic wearing and tearing. When the production scale needs to be increased, the size of the high-efficiency oxygen generating equipment can be increased in the axial direction, which is beneficial to the enlargement of the high-efficiency oxygen generating equipment and the increase of the production scale. Parts in the high-efficiency oxygen generating equipment can be produced in a modularized mode, and are convenient to install, detach and replace.

In some embodiments, as shown in fig. 2, the outer barrel 1040 includes a first barrel 1041 having a hollow cylindrical shape, the first barrel 1041 having a plurality of small holes formed therein, and the first barrel 1041 having an open area ratio of greater than or equal to 50%. The opening ratio refers to the percentage of the total area of the outer side wall or the inner side wall of the first bore cylinder 1041 occupied by the total area of the plurality of small bores. In some embodiments, the gas within the first layer cavity 1110 may enter the second layer cavity 1120 through a plurality of small holes in the first pod 1041.

In some embodiments, outer barrel 1040 may also include a first web 1042. The first mesh 1042 refers to a mesh structure. The first mesh 1042 is provided with a plurality of meshes. In some embodiments, the mesh size is smaller than the size of the water absorbing dry molecular sieve 1150. I.e., the water-absorbing dry molecular sieve 1150 cannot pass through the mesh. In some embodiments, the first mesh 1042 is disposed on a side of the first pod 1041 adjacent to the second-tier cavity 1120. In some embodiments, first web 1042 is cylindrical. In some embodiments, the first mesh 1042 is spaced from the first bore 1041 by a distance greater than or equal to 0. By arranging the first mesh 1042, the contact between the water-absorbing and drying molecular sieve 1150 and the small holes of the first hole cylinder 1041 can be avoided, so that the blocking of the water-absorbing and drying molecular sieve 1150 to the small holes of the first hole cylinder 1041 or the detachment from the small holes of the first hole cylinder 1041 can be avoided. Meanwhile, the first mesh 1042 has mesh holes, which can avoid blocking the flow of gas. In some embodiments, first web 1042 may be made of a corrosion resistant material. Such as corrosion resistant stainless steel, etc. The first mesh 1042 has certain corrosion resistance, so that the water-absorbing and drying molecular sieve 1050 is prevented from corroding the first hole cylinder 1041, and meanwhile, the first mesh 1042 also has certain strength, so that the shape accuracy (for example, the shape of the first mesh 1042 is kept to be cylindrical) of the first mesh 1042 can be kept, and the influence on the uniform distribution of the water-absorbing and drying molecular sieve 1150 caused by the collapse and deformation of the first mesh 1042 can be avoided.

In some embodiments, outer barrel 1040 may also include a first securing member 1043. In some embodiments, a first mount 1043 may be used to connect the first pod 1041 with the support assembly 1091. In some embodiments, a first securing member 1043 may be used to connect the first web 1042 with the support assembly 1091. In some embodiments, a first fastener 1043 may be used to connect the first pod 1041 with the first web 1042.

In some embodiments, the inner bore cartridge 1060 includes a hollow cylindrical second bore cartridge 1061, the second bore cartridge 1061 having a plurality of small holes formed therein, the second bore cartridge 1061 having an open porosity of greater than or equal to 50%. The apertures of the second pod 1061 may enable gas to flow from the third cavity 1130 to the fourth cavity 1140.

In some embodiments, the inner bore cartridge 1060 may also include a second mesh body 1062 and a second securing member 1063. The structure of second web 1062 is similar to that of first web 1042, and for further details of second web 1062 reference is made to the description of first web 1042. The second securing member 1063 is similar in structure to the first securing member 1043, and for further details regarding the second securing member 1063, reference is made to the associated description of the first securing member 1043.

Through set up the aperture on hole section of thick bamboo and outer hole section of thick bamboo, can play the effect of dispersed air flow, be favorable to making air flow distribution even, improve the utilization ratio of molecular sieve.

In some embodiments, high efficiency oxygen plant 1000 may also include distributed sensors (not shown). The distributed sensor may include one or more of a pressure sensor, a temperature sensor, an oxygen concentration sensor, a nitrogen concentration sensor, a gas flow sensor, and the like. In some embodiments, distributed sensors may be disposed within one or more of inlet 1010, outlet 1020, outer cylinder 1030, outer cylinder 1040, middle grid 1050, inner cylinder 1060, inner cylinder 1070, upper head 1080, lower head 1090, bladder compression device 1100, oxygen collection device, and source of raw materials gas, among others. For example, a distributed sensor disposed within intake device 1010 (e.g., intake nipple 1011 of intake device 1010, etc.) may be used to detect the volume of air input into high efficiency oxygen plant 1000. The distributed sensor is provided in the gas outlet device 1020 (for example, the gas outlet pipe 1021 of the gas outlet device 1020) and can be used to detect the composition of the output gas (for example, the concentration of nitrogen gas, the concentration of oxygen gas, etc.) of the high-efficiency oxygen generator 1000. In some embodiments, distributed sensors may also be disposed within the oxygen balance buffer device 3000, which may be used to detect oxygen content, air pressure, etc. within the oxygen balance buffer device 3000.

In some embodiments, the high efficiency oxygen generating device may be communicatively coupled to an external processor, which may be configured to receive, analyze, process, store data, and form control instructions based on the data, and issue the control instructions to the actuators to cause the actuators to perform corresponding functions or actions. In some embodiments, the distributed sensor may be communicatively coupled to the processor.

Fig. 3 is a schematic flow diagram of a high efficiency oxygen production process suitable for use with a calcium molecular sieve according to some embodiments of the present disclosure. As shown in fig. 3, the process includes the following steps. In some embodiments, the process may be performed by a high efficiency oxygen generation system.

Step S1: the raw air is output through a raw air source and is filtered through a filter to remove mechanical particulate impurities (e.g., dust, etc.) therein. Exemplary filters may include filter screens and the like. In some embodiments, a filter may be used to remove mechanical particulate impurities of 5 μm and above.

Step S2: the filtered feed air is compressed to a set operating pressure (e.g., 45-50 KPaG) and cooled to a set temperature (e.g., 30-40℃.) to provide pre-process air. By boosting the raw material air, the air pressure and the kinetic energy of the raw material air can be improved, so that the raw material air passes through the water-absorbing and drying molecular sieve and/or the oxygen-making molecular sieve under the action of pressure, and the oxygen-making separation efficiency is improved. The efficiency of the water-absorbing and drying molecular sieves and the efficiency of the oxygen-generating molecular sieves can be affected by temperature, and the higher the temperature, the lower the efficiency. The raw materials are air cooled, so that the efficiency of the water-absorbing and drying molecular sieve or the oxygen-making molecular sieve can be prevented from being influenced.

Step S3: and conveying the pretreated air into the high-efficiency oxygen generating equipment through the air inlet device.

S4: the pretreated air passes through a water-absorbing and drying molecular sieve in the high-efficiency oxygen-making equipment, water and impurity gas in the pretreated air are absorbed, then passes through the oxygen-making molecular sieve, nitrogen components are absorbed, and the residual oxygen components are output through an air outlet device.

Fig. 4 is a schematic diagram of the connection of two high efficiency oxygen plants according to some embodiments of the present description. In some embodiments, in step S4, two high efficiency oxygen plants 1000 may be used to alternately operate. The two high efficiency oxygen plants 1000 may include a first high efficiency oxygen plant 1200 and a second high efficiency oxygen plant 1300.

In some embodiments, a valve switching system 2000 is connected between the first high-efficiency oxygen plant 1200 and the second high-efficiency oxygen plant 1300, and pretreated air is controlled to enter the first high-efficiency oxygen plant 1200 or the second high-efficiency oxygen plant 1300 by the valve switching system 2000. In some embodiments, the valve switching system 2000 may include a first valve and a second valve. The first valve is correspondingly connected with the air inlet device of the first high-efficiency oxygen generating equipment 1200. The second valve is correspondingly connected with an air inlet device of the second high-efficiency oxygen generating device 1300. In some embodiments, valve switching system 2000 may control one of the valves to open and pre-process air may enter the high efficiency oxygen plant to which the valve corresponds. The valve switching system 2000 can control the closing of another valve, and the pretreated air cannot enter the high-efficiency oxygen-making equipment corresponding to the valve.

In some embodiments, the first high-efficiency oxygen-making device 1200 and the second high-efficiency oxygen-making device 1300 may be respectively connected to an air extracting device, and impurities in the water-absorbing and drying molecular sieve in the high-efficiency oxygen-making device and nitrogen absorbed by the oxygen-making molecular sieve may be extracted, so that the molecular sieve is recovered to activity. Exemplary suction devices may include vacuum pumps and the like. In some embodiments, when the air extraction device sucks one of the high-efficiency oxygen generating devices, the other high-efficiency oxygen generating device performs oxygen generating work. In some embodiments, the valve switching system 2000 may also include a greater number of valves, which may be connected in series and/or in parallel.

Through making two high-efficient oxygenerator work in turn, can carry out the evacuation desorption to another high-efficient oxygenerator when one of them high-efficient oxygenerator carries out oxygenerator work, get rid of impurity and oxygenerator molecular sieve absorptive nitrogen gas in its dry molecular sieve that absorbs water, resume its activity, can realize incessant oxygenerator, be favorable to improving the efficiency of oxygenerator, be favorable to improving high-efficient oxygenerator's life.

In some embodiments, the high efficiency oxygen generation process further comprises: oxygen produced by at least one of the two high-efficiency oxygen producing devices is introduced into the oxygen balance buffer device 3000. When two high-efficient oxygenerator are alternated, probably unable realization continuous output oxygen, lead to the oxygen of output to appear undulant, let in oxygen balanced buffer 3000 with oxygen, the rethread oxygen balanced buffer 3000 exports, can play the cushioning effect, guarantees the output that oxygen can be continuous and stable.

In some embodiments, the process further comprises, in response to the first condition and/or the second condition, alternately operating the first high efficiency oxygen plant 1200 with the second high efficiency oxygen plant 1300 by the valve switching system 2000 to obtain oxygen. The first condition and the second condition refer to preset conditions. In some embodiments, the first condition may be a relationship between a rate at which the high efficiency oxygen producing device produces oxygen and a rate at which the oxygen balance buffer device 3000 outputs oxygen. In some embodiments, the second condition may be a relationship between the amount of oxygen within the oxygen balance buffer device 3000 and the rate at which the oxygen balance buffer device 3000 outputs oxygen. In some embodiments, the valve switching system 2000 may be communicatively coupled to a processor, and the processor may issue control instructions to the valve switching system 2000 to cause the valve switching system 2000 to perform the function of switching valves.

In some embodiments, the first condition and the second condition may be determined based on the first high efficiency oxygen plant sensing parameter, the second high efficiency oxygen plant sensing parameter, and the oxygen balance buffer parameter.

The first high efficiency oxygen plant sensing parameter refers to a parameter associated with the first high efficiency oxygen plant 1200. In some embodiments, the first high efficiency oxygen plant sensing parameters may include at least one of a volume of input air, a flow rate of input air, a first oxygen production rate, a composition of output gas (e.g., a concentration of nitrogen, a concentration of oxygen, etc.), a flow rate of output gas, a capacity of the first high efficiency oxygen plant, etc. of the first high efficiency oxygen plant 1200. In some embodiments, the first high efficiency oxygen plant sensing parameters may be acquired based on distributed sensors.

The second efficient oxygen plant sensing parameters refer to parameters related to the second efficient oxygen plant 1300. In some embodiments, the second efficient oxygen plant sensing parameters may include at least one of a volume of input air, a flow rate of input air, a second oxygen production rate, a composition of output gas (e.g., a concentration of nitrogen, a concentration of oxygen, etc.), a flow rate of output gas, a capacity of the second efficient oxygen plant, etc. of the second efficient oxygen plant 1300. In some embodiments, the second high efficiency oxygen plant sensing parameters may be obtained based on distributed sensors.

The oxygen balance buffer parameter refers to a parameter related to the oxygen balance buffer 3000. In some embodiments, the oxygen balance buffer device 3000 may include at least one of an oxygen capacity, an already-contained oxygen capacity, an internal air pressure, etc. of the oxygen balance buffer device 3000. In some embodiments, the oxygen balance buffer parameters may be acquired based on distributed sensors.

In some embodiments, the processor may determine the first condition and the second condition by looking up a table based on the first high efficiency oxygen plant sensing parameter, the second high efficiency oxygen plant sensing parameter, and the oxygen balance buffer parameter. In some embodiments, the preset table (1) may include:

Wherein a is ₁ 、a ₂ … can represent different first high-efficiency oxygen plant sensing parameters, b ₁ 、b ₂ … can represent different second high-efficiency oxygen plant sensing parameters, c ₁ 、c ₂ … can represent different parameters of the oxygen balance buffer, d ₁ 、d ₂ … can represent different first conditions, e ₁ 、e ₂ … may represent a second, different condition. In some embodiments, the preset table (1) may be established based on historical data.

In some embodiments, first efficient oxygen plant 1200 and second efficient oxygen plant 1300 may be controlled to operate alternately by valve switching system 2000 in response to the first condition and/or the second condition.

In some embodiments, the first condition may relate to a relationship between an oxygen production rate of the efficient oxygen production apparatus (e.g., a first oxygen production rate of the first efficient oxygen production apparatus 1200 or a second oxygen production rate of the second efficient oxygen production apparatus 1300, etc.) and an oxygen supply rate of the oxygen balance buffer 3000. For more on the oxygen supply rate, see the relevant description below. In some embodiments, a difference between the oxygen production rate and the oxygen supply rate may be calculated, and a determination may be made as to whether the difference satisfies the first condition. For example, the first condition may be: the first oxygen production rate (or the second oxygen production rate) -oxygen supply rate < the first coefficient. Wherein the first coefficient may be obtained based on empirical or historical data. For example, the first coefficient may be 10 or the like. In some embodiments, when the relationship between the first oxygen production rate and the oxygen supply rate satisfies the first condition, the oxygen balance buffer device 3000 may output oxygen outwardly, and may be ready to start the second high efficiency oxygen production apparatus 1300.

In some embodiments, the second condition may relate to a relationship between an oxygen content and an oxygen supply rate of the oxygen balance buffer device 3000. For example, the second condition may be: oxygen supply time is less than the second coefficient. Wherein the second coefficient may be time and the second coefficient may be obtained based on empirical or historical data. For example, the second coefficient may be one minute. In some embodiments, oxygen supply time = oxygen content/oxygen supply rate of oxygen balance buffer device 3000. The processor may calculate the oxygen supply time and determine whether the oxygen supply time satisfies the second condition. In some embodiments, when the oxygen supply time satisfies the second condition, the oxygen content in the oxygen balance buffer device 3000 is insufficient to supplement the final output oxygen, and it is necessary to make the first high-efficiency oxygen producing apparatus 1200 and the second high-efficiency oxygen producing apparatus 1300 produce oxygen simultaneously.

By setting the first condition and the second condition, the valve switching system can be automatically controlled when the first condition and/or the second condition is met, and the degree of automatic control of the valve switching system is improved.

In some embodiments, the pumping rate of the pumping device may be adjusted as desired.

In some embodiments, the oxygen supply time may be determined based on the oxygen supply rate and the oxygen content in the oxygen balance buffer device 3000; the pumping rate is adjusted based on the oxygen delivery time and the first high efficiency oxygen plant 1200 parameters or the second high efficiency oxygen plant 1300 parameters.

The oxygen supply rate refers to the rate at which oxygen is supplied from the oxygen balance buffer 3000. The oxygen supply time is the time required for the oxygen balance buffer device 3000 to supply oxygen to reach a preset value. For example, the oxygen balance buffer device 3000 supplies oxygen for a time required until the finally outputted oxygen satisfies a set threshold. In some embodiments, a distributed sensor is provided at the outlet of the oxygen balance buffer device 3000, and the oxygen supply rate may be obtained based on the distributed sensor. In some embodiments, the oxygen content within the oxygen balance buffer 3000 may be obtained based on distributed sensors. In some embodiments, the processor may determine the oxygen delivery time in a variety of ways based on the oxygen delivery rate and the oxygen content within the oxygen balance buffer device 3000. For example by a preset algorithm. An exemplary preset algorithm may be oxygen supply time=oxygen content/oxygen supply rate in the oxygen balance buffer device 3000.

In some embodiments, the amount of nitrogen within first efficient oxygen plant 1200 or second efficient oxygen plant 1300 may be determined based on the first efficient oxygen plant sensing parameter or the second efficient oxygen plant sensing parameter. In some embodiments, the pumping rate may be adjusted based on the amount of nitrogen and the oxygen supply time. In some embodiments, the pumping rate may be positively correlated to the amount of nitrogen. In some embodiments, the pumping rate may be inversely related to the oxygen delivery time. In some embodiments, the processor may determine the rate at which nitrogen is extracted based on a preset algorithm. For example, the pumping rate = amount of nitrogen/oxygen supply time.

Fig. 5 is a schematic view of a movable flap according to some embodiments of the present application. In some embodiments, as shown in fig. 5, one or more movable flaps 4000 are provided on the apertures of the first barrel 1041 and the apertures of the second barrel 1061.

The movable baffle 4000 is a shielding structure for shielding the small hole movably. In some embodiments, the movable flap 4000 may completely block, partially block, or unblock at least one aperture by rotating and/or sliding. By completely or partially shielding the small holes by the movable baffle 4000, the opening ratio of the first cylinder 1041 and/or the second cylinder 1061 can be changed, so that the speed of gas circulation and the efficiency of oxygen production can be changed. In some embodiments, the movable blade 4000 may be coupled to a drive structure that may be used to control the rotation and/or sliding of the movable blade 4000. The driving structure comprises at least one of a motor, an air cylinder, a hydraulic cylinder, an electric pushing cylinder and the like. In some embodiments, the driving structure may drive the movable flaps separately. In some embodiments, the drive structure may drive multiple movable flaps simultaneously.

In some embodiments, high efficiency oxygen plant 1000 may turn one or more movable flaps on and/or off based on the movable flap profile.

The distribution of the movable baffle refers to the condition that the movable baffle is opened and/or closed. In some embodiments, the active flap distribution may include at least one of a percentage of the total number of active flaps that are open, a ratio of active flaps that are open to active flaps that are closed, an aperture ratio of the inner and/or outer aperture cylinders, and the like. The active flap distribution can be obtained in a number of possible ways.

In some embodiments, determining the active flap distribution includes: based on the first high-efficiency oxygen generating equipment sensing parameters and the second high-efficiency oxygen generating equipment sensing parameters, the filtering effect corresponding to each candidate movable baffle distribution is evaluated. For more on the first high efficiency oxygen plant sensing parameters, the second high efficiency oxygen plant sensing parameters, see the relevant description above. The candidate active baffle distribution refers to at least one preset active baffle distribution. The movable flaps corresponding to the plurality of different candidate movable flaps are opened and/or closed differently. In some embodiments, the at least one candidate active flap distribution may be preset based on at least one of historical data, a preset algorithm, a look-up table, and the like.

The filtering effect refers to the effect that water, nitrogen or other gases in the gas are filtered out after the gas passes through the water-absorbing and drying molecular sieve and/or the oxygen-generating molecular sieve. In some embodiments, the filtering effect may include oxygen concentration, the ratio of oxygen in the remaining gas, and the like.

In some embodiments, the filtering effect may be determined based on the composition of the output gas of the high efficiency oxygen plant (e.g., the oxygen content, the ratio of oxygen in the output gas, etc.). For example, the higher the oxygen content and the higher the ratio of the gas composition, the better the filtering effect. The movable baffle distribution with the best filtering effect can be selected.

By evaluating the filtering effect, the optimal distribution of the movable baffle plates can be determined, so that the shielding condition of the movable baffle plates is correspondingly controlled, and the highest efficiency of oxygen production is maintained.

In some embodiments, the gas composition for a future period of time may be determined based on the candidate active blade distribution, the first high efficiency oxygen plant sensing parameter, and the second high efficiency oxygen plant sensing parameter; and determining the filtering effect corresponding to each candidate movable separation blade distribution based on the sensing parameters of the first high-efficiency oxygen generating equipment, the sensing parameters of the second high-efficiency oxygen generating equipment at the current moment and the gas composition of a period of time in the future.

In some embodiments, the composition of the output gas for a future period of time may be determined based on the first and second high efficiency oxygen plant sensing parameters by a first predictive network model capable of processing the time series data. In some embodiments, the first predictive network model may be a machine learning model. In some embodiments, the first predictive network model may include at least one of a recurrent neural network (RecurrentNeural Network, RNN), a long short term memory neural network (Long Short Term Memory, LSTM), or the like.

The inputs to the first predictive network model may include candidate active blade distributions, first high efficiency oxygen plant sensing parameters and second high efficiency oxygen plant sensing parameters over current and historical periods of time.

The output of the first predictive network model may include a composition of the output gas for a period of time in the future. It should be noted that, in a predicted future period of time, the active flap distribution may be considered unchanged.

In some embodiments, the first predictive network model may be trained from a plurality of first training samples with first labels. A plurality of first training samples with first labels may be input into the initial first predictive network model, a loss function is constructed from the results of the first labels and the initial first predictive network model, and parameters of the initial first predictive network model are iteratively updated based on the loss function. And when the loss function of the initial first prediction network model meets the preset condition, model training is completed, and a trained first prediction network model is obtained. The preset condition may be that the loss function converges, the number of iterations reaches a threshold value, etc.

In some embodiments, the first training sample may include at least a sample active baffle distribution, a sample first high efficiency oxygen plant sensing parameter, and a sample second high efficiency oxygen plant sensing parameter. The first label may include a composition of the actual output gas corresponding to the first training sample. In some embodiments, the first training sample may be obtained based on historical data. The label of the first training sample may be obtained by manual labeling.

In some embodiments, the processor may determine the filtering effect based on the first high efficiency oxygen plant sensing parameter, the second high efficiency oxygen plant sensing parameter, the composition of the output gas for a period of time in the future at the current time. For example, the oxygen content in the composition of the output gas corresponding to the sensing parameter of the current first efficient oxygen generating device, the oxygen content in the composition of the output gas corresponding to the sensing parameter of the second efficient oxygen generating device, and the oxygen content in the composition of the output gas for a period of time in the future are weighted, so that the filtering effect is obtained.

In some embodiments, the processor may select, based on the filtering effect, a candidate active patch distribution corresponding to the best filtering effect as the final active patch distribution. The processor can control the driving structure to execute corresponding actions based on the selected final movable baffle distribution, and the driving structure drives the movable baffle to move to form the required movable baffle distribution.

In some embodiments, the high efficiency oxygen generation process further comprises determining a molecular sieve replacement cycle.

The molecular sieve replacement cycle refers to the life cycle of the molecular sieve. In some embodiments, the molecular sieve replacement cycle may include a water-absorbing dry molecular sieve replacement cycle and an oxygen-generating molecular sieve replacement cycle.

In some embodiments, the molecular sieve replacement cycle may be related to the first high efficiency oxygen plant sensing parameter, the second high efficiency oxygen plant sensing parameter, and the historical oxygen production data. For more on the first high efficiency oxygen plant sensing parameters, the second high efficiency oxygen plant sensing parameters, see the relevant description above. Historical oxygen production data refers to data related to the oxygen production process over a period of time. For example, the raw material air rate, the volume of produced oxygen, the remaining use time of the water-absorbing dry molecular sieve, the remaining use time of the oxygen-producing molecular sieve, the water-absorbing dry molecular sieve replacement period, the oxygen-producing molecular sieve replacement period, and the like over a historical period of time. In some embodiments, historical oxygen production data may be obtained based on historical data.

In some embodiments, the processor may predict the feed air volume, the produced oxygen volume for a predetermined time period in the future based on the historical oxygen production data via a second predictive network model. In some embodiments, the second predictive network model may be a machine learning model. For example convolutional neural networks (Convolutional Neural Networks, CNN), etc.

The input to the second predictive network model may include historical oxygen production data.

The output of the second predictive network model may include predicting a feed air rate, a produced oxygen volume for a predetermined time period in the future.

The feed air rate refers to the rate at which feed air enters the high efficiency oxygen plant. In some embodiments, the raw material air rate may be acquired based on distributed sensors. For example, a distributed sensor may be provided in the intake device of the high-efficiency oxygen generator, and the rate at which raw material air enters the intake device may be detected by the distributed sensor.

In some embodiments, the training process of the second predictive network model is similar to the training process of the first network training model, and for more content on the training process of the second predictive network model, reference may be made to the training process of the first network training model.

In some embodiments, the processor may predict, based on the first high efficiency oxygen plant sensing parameter, the second high efficiency oxygen plant sensing parameter, a water-absorbing dry molecular sieve remaining usage time and an oxygen-producing molecular sieve remaining usage time through a third predictive network model.

In some embodiments, the processor may predict the feed air volume and/or the produced oxygen volume for a predetermined time period in the future through a third predictive network model. In some embodiments, the third predictive network model may be a machine learning model. For example convolutional neural networks (ConvolutionalNeural Networks, CNN), etc.

The third prediction network model may be input with the first high-efficiency oxygen plant sensing parameter, the second high-efficiency oxygen plant sensing parameter, and so on.

The output of the third predictive network model may include the remaining usage time of the water-absorbing dry molecular sieve and the remaining usage time of the oxygen-generating molecular sieve.

In some embodiments, the training process of the third predictive network model is similar to the training process of the first network training model, and for more content on the training process of the third predictive network model, reference may be made to the training process of the first network training model.

In some embodiments, the processor may determine the water-absorbing dry molecular sieve replacement period and the oxygen-generating molecular sieve replacement period by vector matching. In some embodiments, the processor may calculate a vector composed of the current raw material air rate, the volume of produced oxygen, the remaining usage time of the water-absorbing dry molecular sieve, and the remaining usage time of the oxygen-generating molecular sieve, and select, as the target water-absorbing dry molecular sieve replacement period and the oxygen-generating molecular sieve replacement period, a water-absorbing dry molecular sieve replacement period and an oxygen-generating molecular sieve replacement period corresponding to a standard vector with the highest similarity, with respect to the similarity between the vectors. In some embodiments, the standard vector may be obtained by clustering the raw material air rate, the produced oxygen gas volume, the remaining usage time of the water-absorbent dry molecular sieve, the remaining usage time of the oxygen-producing molecular sieve, the water-absorbent dry molecular sieve replacement period, the oxygen-producing molecular sieve replacement period, and the like in the historical data to generate a plurality of cluster centers, and using the raw material air rate, the produced oxygen volume, the remaining usage time of the water-absorbent dry molecular sieve, and the remaining usage time of the oxygen-producing molecular sieve corresponding to the cluster centers as the standard vector.

The expiration time of the service lives of the water-absorbing and drying molecular sieve and the oxygen-making molecular sieve can be predicted in advance by determining the replacement period of the molecular sieve, so that the water-absorbing and drying molecular sieve and/or the oxygen-making molecular sieve can be replaced conveniently before extraction, and the influence on the efficiency and effect of oxygen production due to the expiration of the service lives of the water-absorbing and drying molecular sieve and/or the oxygen-making molecular sieve in the oxygen production process is avoided.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present invention.

Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.

Furthermore, the order in which the elements and sequences are processed, the use of numerical letters, or other designations in the description are not intended to limit the order in which the processes and methods of the description are performed unless explicitly recited in the claims. While certain presently useful inventive embodiments have been discussed in the foregoing disclosure, by way of various examples, it is to be understood that such details are merely illustrative and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements included within the spirit and scope of the embodiments of the present disclosure. For example, while the system components described above may be implemented by hardware devices, they may also be implemented solely by software solutions, such as installing the described system on an existing server or mobile device.

Likewise, it should be noted that in order to simplify the presentation disclosed in this specification and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the present description. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.

Each patent, patent application publication, and other material, such as articles, books, specifications, publications, documents, etc., referred to in this specification is incorporated herein by reference in its entirety. Except for application history documents that are inconsistent or conflicting with the content of this specification, documents that are currently or later attached to this specification in which the broadest scope of the claims to this specification is limited are also. It is noted that, if the description, definition, and/or use of a term in an attached material in this specification does not conform to or conflict with what is described in this specification, the description, definition, and/or use of the term in this specification controls.

Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments of this specification. Other variations are possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present specification may be considered as consistent with the teachings of the present specification. Accordingly, the embodiments of the present specification are not limited to only the embodiments explicitly described and depicted in the present specification.

Claims

1. The high-efficiency oxygen generating equipment suitable for the calcium molecular sieve comprises an equipment body, wherein the equipment body is formed by enclosing an upper end socket, a lower end socket and an outer cylinder body, and an outer hole cylinder, a middle net rack, an inner hole cylinder, an inner cylinder body and an air bag compressing device are arranged in the equipment body;

the inner hole cylinder is sleeved outside the inner cylinder body, the middle net rack is sleeved outside the inner hole cylinder, and the outer hole cylinder is sleeved outside the middle net rack;

a first layer of cavity is formed between the outer cylinder body and the outer hole cylinder, and the first layer of cavity is communicated with an air inlet device;

a second layer of cavity is formed between the outer hole cylinder and the middle net rack, and a water-absorbing and drying molecular sieve is arranged in the second layer of cavity;

a third layer of cavity is formed between the middle net rack and the inner hole barrel, and an oxygen-making molecular sieve is arranged in the third layer of cavity;

A fourth layer of cavity is formed between the inner hole cylinder and the inner cylinder body, and the fourth layer of cavity is communicated with the air outlet device.

2. The high efficiency oxygen generating apparatus for calcium molecular sieves as set forth in claim 1, wherein said air inlet means comprises an air inlet short tube connected to a source of raw material air and a connecting member connected to said air inlet short tube and said lower head, respectively, said connecting member being tapered, and the cross-sectional area of said connecting member being gradually increased from a direction closer to said air inlet short tube to a direction farther from said air inlet short tube.

3. The high efficiency oxygen generating apparatus for calcium molecular sieve as set forth in claim 1, wherein said gas outlet means comprises a gas outlet pipe, said gas outlet pipe being in communication with said fourth layer cavity, said gas outlet pipe passing through said lower head for connection to an oxygen collection means.

4. The high-efficiency oxygen production equipment suitable for calcium molecular sieves according to claim 1, wherein the outer pore tube comprises a first hollow cylindrical pore tube, a plurality of small holes are formed in the first pore tube, and the opening ratio of the first pore tube is greater than or equal to 50%;

the inner hole barrel comprises a hollow cylindrical second hole barrel, a plurality of small holes are formed in the second hole barrel, and the opening rate of the second hole barrel is greater than or equal to 50%.

5. The high efficiency oxygen plant for calcium molecular sieves according to claim 1, wherein said medium net frame comprises a net body and a frame body for supporting said net body;

the net body is connected to the frame body, and the net body is cylindrical.

6. The high-efficiency oxygen generating equipment suitable for the calcium molecular sieve as claimed in claim 1, wherein a supporting component is arranged in the lower sealing head;

the support component is connected with at least one of the outer hole cylinder, the middle net rack, the inner hole cylinder and the inner cylinder body, and the support component provides support for the water-absorbing and drying molecular sieve and the oxygen-generating molecular sieve.

7. The high efficiency oxygen generating apparatus for calcium molecular sieves as set forth in claim 1, wherein said air bag compressing apparatus is disposed in said upper head, said air bag compressing apparatus comprising an air bag, said air bag being elastically connected to at least one of said outer cylinder, said middle net frame, said inner cylinder and said inner cylinder.

8. The efficient oxygen production process suitable for the calcium molecular sieve adopts the efficient oxygen production equipment and is characterized by comprising the following steps of:

s1: outputting raw material air through a raw material air source, and filtering mechanical particle impurities in the raw material air through a filter;

S2: compressing and boosting the filtered raw material air to a set working pressure, and cooling to a set temperature to obtain pretreated air;

s3: conveying the pretreated air into the high-efficiency oxygen generating equipment through an air inlet device;

9. The efficient oxygen production process for calcium molecular sieves according to claim 8, wherein in said step S4, two efficient oxygen production devices are used to alternately operate;

a valve switching system is connected between the two high-efficiency oxygen generating devices, and the pretreated air is controlled to enter one of the two high-efficiency oxygen generating devices through the valve switching system.

10. The efficient oxygen generation process for calcium molecular sieves of claim 9, further comprising: and introducing oxygen produced by at least one of the two high-efficiency oxygen producing devices into an oxygen balance buffer device.