Air separation liquid oxygen re-purification device

Abstract

The utility model relates to the technical field of air separation liquid oxygen, in particular to an air separation liquid oxygen re-purification device. According to the technical scheme, the device comprises a purification box body, a fixing box and an outer rod, a workbench is fixed to the lower surface of the purification box body, supporting legs are welded to the lower surface of the workbench, an outer plate is fixed to the inner wall of the purification box body, a connecting plate is fixed to the upper surface of the outer plate, and an inner plate is movably inserted into the outer end face of one side of the outer plate; a heating plate is mounted on the upper surface of the inner plate, the heating plate is movably inserted into the connecting plate, the outer rod is fixed to the top end of the inner wall of the purification box body, an inner rod is movably inserted into the lower surface of the outer rod, a limiting groove is formed in the lower surface of the inner rod, and a connecting rod is fixed to the upper surface of the fixed box. And a supporting plate is fixed to the upper surface of the connecting rod, a limiting rod is fixed to the upper surface of the supporting plate, and the supporting plate is in threaded connection to the inner wall of the limiting groove through the limiting rod and is fixed to the inner rod. The air separation liquid oxygen purification device can improve the purity of air separation liquid oxygen.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation liquid oxygen, in particular to an air separation liquid oxygen re-purification device. Background Art

[0002] Due to the different boiling points of liquid nitrogen and liquid oxygen, oxygen is obtained by low-temperature evaporation. (Remaining liquid oxygen) Nitrogen has a low boiling point and evaporates first, and the remaining is mainly liquid oxygen, which is stored under pressure in a steel cylinder painted blue. The liquid air separation method is a method of separating oxygen and nitrogen in the air. No new substances are generated in the whole process, which is a physical change. Air separation of liquid oxygen requires the use of a re-purification device.

[0003] The prior art discloses a pipeline aggregation device for multiple sets of air separation liquid oxygen products in CN108662335A, which includes multiple single sets of air separation liquid oxygen product pipes. The multiple single sets of air separation liquid oxygen product pipes are aggregated at a low point by stainless steel pipe fittings through respective connected manual stop valves, and are connected to a stainless steel aggregation pipe after being aggregated at the low point. The stainless steel aggregation pipe flows from the aggregation point to the liquid oxygen storage tank along a continuous upward slope; the manual stop valve is used as a cut-off valve for each branch, which is placed at a relatively high point of the pipeline, and the manual stop valves are all centrally arranged in a valve insulation box; the device has the characteristics of safety, reliability, rationality, high efficiency, high practicality, etc., and is suitable for the aggregation of multiple sets of air separation liquid oxygen product pipelines outside a cold box, and can effectively prevent the accumulation of hydrocarbons at the valve to avoid safety accidents.

[0004] Nowadays, after liquid oxygen is separated from the air, the purity is not enough, and purification equipment is needed to purify liquid oxygen with higher purity. Utility Model Content

[0005] The utility model aims to provide an air separation liquid oxygen re-purification device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air separation liquid oxygen re-purification device, comprising a purification box body, a fixed box and an outer rod, the inner wall of the purification box body is fixed with an outer plate, and the upper surface of the outer plate is fixed with a connecting plate, the outer rod is fixed to the top of the inner wall of the purification box body, the lower surface of the outer rod is movably connected with an inner rod, and the lower surface of the inner rod is provided with a limiting groove, the upper surface of the fixed box is fixed with a connecting rod, and the upper surface of the connecting rod is fixed with a support plate.

[0007] When using an air separation liquid oxygen re-purification device in the technical solution, open the fixed valve, fill liquid nitrogen into the bottom end of the interior of the purification box body through the fixed pipe, put the molecular sieve into the fixed box, open the air inlet valve, fill air into the interior of the purification box body, and the heating plate and the connecting plate are heated under the action of the power device. The molecular sieve only adsorbs nitrogen at high temperature, which can improve the purity of liquid oxygen. After the adsorption is completed, the outer plate and the connecting plate drive the inner plate and the heating plate to move under the action of the power device, and the inner plate and the heating plate are retracted. The outer rod drives the inner rod to descend under the action of the power device, and the inner rod drives the support plate to descend, and the support plate drives the fixed box to descend, and the fixed box drives the molecular sieve to descend, and the fixed box is lowered to the bottom end of the interior of the purification box body. Liquid nitrogen can cool the fixed box, and cooling makes oxygen condense to obtain liquid oxygen, which can improve the purity of air separation liquid oxygen. After the purification is completed, the limit rod and the limit groove are separated, the support plate and the fixed box are removed, and the liquid oxygen can be poured out.

[0008] Preferably, an air inlet pipe is connected to one side of the outer end surface of the purification box body, and an air inlet valve is threadedly connected to the outer surface of the air inlet pipe. By arranging the air inlet pipe and the air inlet valve on one side of the purification box body, it is convenient to send gas into the purification box body.

[0009] Preferably, one side of the outer end surface of the purification box body is connected to a fixed pipe, and the outer surface of the fixed pipe is threadedly connected to a fixed valve. By arranging the fixed pipe and the fixed valve on one side of the purification box body, liquid nitrogen can be easily delivered to the bottom end of the purification box body.

[0010] Preferably, a workbench is fixed to the lower surface of the purification box body, and supporting legs are welded to the lower surface of the workbench. By arranging the workbench and supporting legs on the lower surface of the purification box body, it is convenient to support the purification box body.

[0011] Preferably, a limiting rod is fixed on the upper surface of the support plate, and the support plate is threadedly connected to the inner wall of the limiting groove and fixed to the inner rod through the limiting rod. By arranging the limiting rod on the upper surface of the support plate, it is convenient to connect the support plate and the inner rod.

[0012] Preferably, an inner plate is movably connected to an outer end surface of one side of the outer plate, and a heating plate is installed on the upper surface of the inner plate, and the heating plate is movably connected to the inside of the connecting plate. By arranging the inner plate on one side of the outer plate, it is convenient to drive the inner plate to move.

[0013] Preferably, a connecting pipe is connected to the outer end surface of one side of the purification box body, and a connecting valve is threadedly connected to the outer surface of the connecting pipe. By arranging the connecting pipe and the connecting valve on one side of the purification box body, it is convenient to discharge the liquid nitrogen.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model achieves the effect of improving the purity of air separation liquid oxygen by arranging a fixed box, an outer rod and an inner rod. The fixed valve is opened, and liquid nitrogen is poured into the bottom end of the interior of the purification box body through the fixed pipe, and the molecular sieve is placed in the fixed box. The air inlet valve is opened, and air is poured into the interior of the purification box body. The heating plate and the connecting plate are heated under the action of the power device, and the molecular sieve only adsorbs nitrogen at high temperature, which can improve the purity of liquid oxygen. After the adsorption is completed, the outer plate and the connecting plate drive the inner plate and the heating plate to move under the action of the power device, and the inner plate and the heating plate are retracted. The outer rod drives the inner rod to descend under the action of the power device, and the inner rod drives the supporting plate to descend, and the supporting plate drives the fixed box to descend, and the fixed box drives the molecular sieve to descend, and the fixed box is lowered to the bottom end of the interior of the purification box body. Liquid nitrogen can cool the fixed box, and the cooling makes oxygen condense to obtain liquid oxygen, which can improve the purity of air separation liquid oxygen. After the purification is completed, the limit rod and the limit groove are separated, and the support plate and the fixed box are removed, and the liquid oxygen can be poured out.

[0016] 2. The utility model achieves the effect of facilitating heating by arranging an outer plate, an inner plate and a heating plate. The heating plate and the connecting plate can heat the molecular sieve, and the outer plate and the inner plate can separate the inside of the purification box body. When purification is required, the outer plate and the connecting plate can retract the inner plate and the heating plate, and the purification box body can be opened, which is convenient for the fixed box to rise or fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 2 It is an enlarged structural schematic diagram of the fixed box of the utility model;

[0019] Figure 3 It is an enlarged structural schematic diagram of the outer plate of the utility model;

[0020] Figure 4 It is a side sectional structural schematic diagram of the utility model.

[0021] In the figure: 1. Intake valve; 2. Intake pipe; 3. Purification box body; 4. Fixed box; 5. Outer plate; 6. Fixed valve; 7. Fixed pipe; 8. Workbench; 9. Support leg; 10. Outer rod; 11. Inner rod; 12. Limit rod; 13. Limit groove; 14. Support plate; 15. Connecting rod; 16. Heating plate; 17. Connecting plate; 18. Inner plate; 19. Connecting pipe; 20. Connecting valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figures 1 to 4 The utility model provides an embodiment: an air separation liquid oxygen re-purification device, comprising a purification box body 3, a fixed box 4 and an outer rod 10, a workbench 8 is fixed to the lower surface of the purification box body 3, and a support leg 9 is welded to the lower surface of the workbench 8, an outer end surface of one side of the purification box body 3 is connected with an air inlet pipe 2, and an outer surface of the air inlet pipe 2 is threadedly connected with an air inlet valve 1, an outer end surface of one side of the purification box body 3 is connected with a fixed pipe 7, and an outer surface of the fixed pipe 7 is threadedly connected with a fixed valve 6, an outer end surface of one side of the purification box body 3 is connected There is a connecting pipe 19, and the outer surface of the connecting pipe 19 is threadedly connected to a connecting valve 20, the outer rod 10 is fixed to the top of the inner wall of the purification box body 3, the lower surface of the outer rod 10 is movably connected to the inner rod 11, and the lower surface of the inner rod 11 is provided with a limiting groove 13, the upper surface of the fixed box 4 is fixed with a connecting rod 15, and the upper surface of the connecting rod 15 is fixed with a supporting plate 14, the upper surface of the support plate 14 is fixed with a limiting rod 12, and the support plate 14 is threadedly connected to the inner wall of the limiting groove 13 through the limiting rod 12 and is fixed to the inner rod 11.

[0025] Of course, as is well known to those skilled in the art, the outer plate 5, outer rod 10, heating plate 16 and connecting plate 17 of the utility model also need to be provided with a power device to enable them to work normally, and as is well known to those skilled in the art, the provision of the power is commonplace, and they all belong to conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0026] Based on an air separation liquid oxygen re-purification device of Example 1, the fixed valve 6 is opened, and liquid nitrogen is poured into the bottom end of the purification box body 3 through the fixed pipe 7, and the molecular sieve is placed in the fixed box 4. The air inlet valve 1 is opened, and air is poured into the purification box body 3. The heating plate 16 and the connecting plate 17 are heated by the power device. The molecular sieve only adsorbs nitrogen at high temperature, which can improve the purity of liquid oxygen. After the adsorption is completed, the outer plate 5 and the connecting plate 17 drive the inner plate 18 and the heating plate 16 to move under the action of the power device, and the inner plate 18 The outer rod 10 drives the inner rod 11 to descend under the action of the power device, and the inner rod 11 drives the support plate 14 to descend, and the support plate 14 drives the fixed box 4 to descend, and the fixed box 4 drives the molecular sieve to descend, and the fixed box 4 is lowered to the bottom end of the purification box body 3. Liquid nitrogen can cool the fixed box 4, and the cooling makes the oxygen condense to obtain liquid oxygen, which can improve the purity of the air separation liquid oxygen. After the purification is completed, the limit rod 12 and the limit groove 13 are separated, the support plate 14 and the fixed box 4 are removed, and the liquid oxygen can be poured out.

[0027] Embodiment 2

[0028] like Figure 1-Figure 4 As shown, the utility model proposes an air separation liquid oxygen re-purification device. Compared with the first embodiment, this embodiment also includes a purification box body 3, a fixed box 4 and an outer rod 10. The inner wall of the purification box body 3 is fixed with an outer plate 5, and the upper surface of the outer plate 5 is fixed with a connecting plate 17. An inner plate 18 is movably inserted into the outer end surface of one side of the outer plate 5, and a heating plate 16 is installed on the upper surface of the inner plate 18, and the heating plate 16 is movably inserted into the inside of the connecting plate 17.

[0029] In this embodiment, the heating plate 16 and the connecting plate 17 can heat the molecular sieve, and the outer plate 5 and the inner plate 18 can separate the interior of the purification box body 3. When purification is required, the outer plate 5 and the connecting plate 17 can retract the inner plate 18 and the heating plate 16, and the purification box body 3 can be opened to facilitate the rising or falling of the fixed box 4.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An air separation liquid oxygen repurification device, comprising a purification box body (3), a fixed box (4) and an outer rod (10), characterized in that: An outer plate (5) is fixed to the inner wall of the purification box body (3), and a connecting plate (17) is fixed to the upper surface of the outer plate (5); the outer rod (10) is fixed to the top of the inner wall of the purification box body (3); an inner rod (11) is movably inserted into the lower surface of the outer rod (10), and a limiting groove (13) is provided on the lower surface of the inner rod (11); a connecting rod (15) is fixed to the upper surface of the fixed box (4), and a supporting plate (14) is fixed to the upper surface of the connecting rod (15).

2. An air separation liquid oxygen re-purification device according to claim 1, characterized in that: One side outer end surface of the purification box body (3) is connected to an air intake pipe (2), and the outer surface of the air intake pipe (2) is threadedly connected to an air intake valve (1).

3. The air separation liquid oxygen re-purification device according to claim 1, characterized in that: One side outer end surface of the purification box body (3) is connected to a fixed pipe (7), and the outer surface of the fixed pipe (7) is threadedly connected to a fixed valve (6).

4. The air separation liquid oxygen re-purification device according to claim 1, characterized in that: A workbench (8) is fixed to the lower surface of the purification box body (3), and supporting legs (9) are welded to the lower surface of the workbench (8).

5. The air separation liquid oxygen re-purification device according to claim 1, characterized in that: A limiting rod (12) is fixed on the upper surface of the support plate (14), and the support plate (14) is threadedly connected to the inner wall of the limiting groove (13) and fixed to the inner rod (11) through the limiting rod (12).

6. The air separation liquid oxygen re-purification device according to claim 1, characterized in that: An inner plate (18) is movably inserted into an outer end surface of one side of the outer plate (5), and a heating plate (16) is installed on the upper surface of the inner plate (18), and the heating plate (16) is movably inserted into the interior of the connecting plate (17).

7. The air separation liquid oxygen repurification device according to claim 1, characterized in that: One side outer end surface of the purification box body (3) is connected to a connecting pipe (19), and the outer surface of the connecting pipe (19) is threadedly connected to a connecting valve (20).

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