Filling device of liquid oxygen tank

Abstract

The utility model discloses a filling device of a liquid oxygen tank. The filling device comprises a liquid oxygen storage tank, a low-temperature liquid oxygen pump and a liquid oxygen subpackaging box, a plurality of liquid oxygen sub-packaging bottles are arranged in the liquid oxygen sub-packaging box, each liquid oxygen sub-packaging bottle is provided with a liquid oxygen sub-packaging branch pipe communicated with the output end of the low-temperature liquid oxygen pump, each liquid oxygen sub-packaging bottle is provided with an exhaust pipe, and each liquid oxygen sub-packaging bottle is sleeved with a water circulating pipe used for collecting residual cold of the liquid oxygen sub-packaging bottle. According to the utility model, the liquid oxygen sub-packaging branch pipes are independently and correspondingly connected with the liquid oxygen sub-packaging bottles, so that liquid oxygen is introduced into each liquid oxygen sub-packaging bottle, and the independent exhaust pipes are arranged, so that different degrees of exhaust can be carried out according to different oxygenation conditions of each liquid oxygen sub-packaging bottle; and the water circulating pipe is arranged to perform heat exchange on the low temperature of the outer wall of the liquid oxygen subpackaging bottle, so that the water temperature in the water circulating pipe is reduced to facilitate the cooling of other parts of the subsequent device.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid oxygen tanks, and in particular relates to a filling device for a liquid oxygen tank. Background Art

[0002] Liquid oxygen has a wide range of industrial and medical uses. The industrial method of producing liquid oxygen is to fractionate liquid air. Liquid oxygen has a total expansion ratio of up to 860:1, and because of this advantage it is widely used in modern industrial production and military aspects. Due to its low temperature characteristics, liquid oxygen makes the substances it contacts very brittle. Liquid oxygen is also a very strong oxidant: organic matter burns violently in liquid oxygen. Some substances may explode if immersed in liquid oxygen for a long time, including asphalt.

[0003] During the liquid oxygen filling process, as liquid oxygen is continuously added, the pressure inside the liquid oxygen tank will gradually increase. When the pressure inside the liquid oxygen tank reaches a certain value, in order to continue to smoothly fill oxygen, the discharge valve must be opened to relieve the pressure inside the liquid oxygen tank. Due to the special properties of liquid oxygen, directly emptying the liquid oxygen tank may cause corrosion to objects around the liquid oxygen tank, and may also cause loss of liquid oxygen and gaseous oxygen.

[0004] Moreover, in the liquid oxygen filling process in the prior art, only a single liquid oxygen bottle can be filled each time. When collecting liquid oxygen during the liquid oxygen filling process, the exterior of the liquid oxygen bottle is in a low-temperature state, which is not conducive to direct touch by operators and lacks the utilization of residual cooling. In addition, the gaseous oxygen in the prior art is directly discharged, which will also cause noise during the discharge process. Therefore, improvement is needed. Utility Model Content

[0005] The utility model aims to provide a filling device for a liquid oxygen tank, so as to solve the technical problems in the prior art that during the liquid oxygen filling process, only a single liquid oxygen bottle can be filled at a time, and the residual cold outside the liquid oxygen bottle is not fully utilized during the filling process.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a filling device for a liquid oxygen tank, comprising a liquid oxygen storage tank for storing sub-packaging, a cryogenic liquid oxygen pump connected to the liquid oxygen storage tank, and a liquid oxygen sub-packaging box for sub-packaging the liquid oxygen in the liquid oxygen storage tank connected to the output end of the cryogenic liquid oxygen pump;

[0008] A plurality of liquid oxygen filling bottles are arranged in the liquid oxygen filling box, each of the liquid oxygen filling bottles is provided with a liquid oxygen filling branch pipe connected with the output end of the low-temperature liquid oxygen pump, and each of the liquid oxygen filling bottles is provided with an exhaust pipe for realizing separate exhaust therefor, and each of the liquid oxygen filling bottles is externally sheathed with a water circulation pipe for collecting the residual cold of the liquid oxygen filling bottle.

[0009] By arranging liquid oxygen filling branches to be connected to the liquid oxygen filling bottles separately, the liquid oxygen in each liquid oxygen filling bottle can be introduced, and by arranging separate exhaust pipes, different degrees of exhaust can be achieved according to the different oxygenation conditions of each liquid oxygen filling bottle. By arranging a water circulation pipe, heat is exchanged with the low temperature of the outer wall of the liquid oxygen filling bottle, so that the water temperature in the water circulation pipe can be lowered to facilitate the cooling of other parts of the subsequent device.

[0010] Optionally, the output end of the low-temperature liquid oxygen pump is configured as an infusion pipe that passes through the interior of the liquid oxygen filling box and is connected to each liquid oxygen filling branch pipe, and the infusion pipe is provided with an infusion pipe valve for opening and closing, and each of the liquid oxygen filling branch pipes is provided with a filling branch pipe valve for independent opening and closing.

[0011] Optionally, each of the liquid oxygen sub-filling branch pipes is connected with a connecting block, and the connecting block is connected with a bellows corresponding to the liquid oxygen sub-filling bottle, a threaded joint is fixed to the end of the bellows, and the liquid oxygen sub-filling bottle is provided with a sub-filling bottle interface which is airtightly connected to the threaded joint. The bellows is provided to facilitate the communication between the liquid oxygen sub-filling branch pipe and the liquid oxygen sub-filling bottle, and the threaded joint is provided at the end of the bellows to facilitate the connection with the sub-filling bottle interface.

[0012] Optionally, each of the liquid oxygen filling bottles is connected to an exhaust branch pipe, several of the exhaust branch pipes are connected to an exhaust pipe, and the exhaust pipe runs through the liquid oxygen filling box to a gas compressor provided on the outside, and each of the exhaust branch pipes is provided with an exhaust branch pipe valve for opening and closing, and the exhaust pipe is provided with an exhaust pipe valve for opening and closing.

[0013] Optionally, a recovery pipe connected to a recovery bottle is provided at the output end of the gas compressor, and the recovery pipe extends to the bottom of the recovery bottle. The recovery bottle is also provided with a reflux pipe, and the recovery pipe is provided with a recovery pipe valve for opening and closing. The reflux pipe is provided with a reflux pipe valve for opening and closing. By arranging the reflux bottle to be connected with the gas compressor, the oxygen contained in the gas extracted from each liquid oxygen sub-bottle is made into liquid oxygen by the gas compressor and then introduced into the recovery bottle, and then the collected liquid oxygen is returned to the liquid oxygen storage tank through the reflux pipe valve and the reflux connecting pipe valve.

[0014] Optionally, a plurality of support feet are provided at the bottom of the liquid oxygen storage tank for support, and a liquid outlet pipe is provided at the bottom of the liquid oxygen storage tank for connection with the input end of the cryogenic liquid oxygen pump, a reflux pipe connected to the reflux pipe is connected to the top of the liquid oxygen storage tank, and a liquid outlet pipe valve for opening and closing is provided on the liquid outlet pipe, and a reflux pipe valve for opening and closing is also provided on the reflux pipe.

[0015] Optionally, the interior of the liquid oxygen filling box is filled with a sound-absorbing layer for sound insulation, and a mounting hole for placing a liquid oxygen filling bottle is provided in the sound-absorbing layer. A water circulation pipe is provided in the mounting hole and is tightly connected to the liquid oxygen filling bottle. The water circulation pipe corresponding to each liquid oxygen filling bottle is connected and then passes through to the outside of the liquid oxygen filling box to be connected to a circulating water tank.

[0016] Beneficial effects and advantages of the utility model:

[0017] The filling device of the liquid oxygen tank has the following benefits:

[0018] By arranging liquid oxygen filling branches to be connected to the liquid oxygen filling bottles separately, the liquid oxygen in each liquid oxygen filling bottle can be introduced, and by arranging separate exhaust pipes, different degrees of exhaust can be achieved according to the different oxygenation conditions of each liquid oxygen filling bottle. By arranging a water circulation pipe, heat is exchanged with the low temperature of the outer wall of the liquid oxygen filling bottle, so that the water temperature in the water circulation pipe can be lowered to facilitate the cooling of other parts of the subsequent device.

[0019] Liquid oxygen is filled in the liquid oxygen sub-packaging box 3, and the noise overflow is effectively reduced by the sound-absorbing layer 31. The liquid oxygen sub-packaging branch pipe is conveniently connected to the liquid oxygen sub-packaging bottle by the bellows, and the threaded joint is conveniently connected to the interface of the sub-packaging bottle by the end of the bellows. The reflux bottle is connected to the gas compressor, and the oxygen contained in the gas extracted from each liquid oxygen sub-packaging bottle is made into liquid oxygen by the gas compressor and then passed into the recovery bottle, and then the collected liquid oxygen is refluxed into the liquid oxygen storage tank through the reflux pipe valve and the reflux connecting pipe valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a system schematic diagram of the utility model;

[0021] Figure 2 This is an enlarged structural diagram of the liquid oxygen dispensing box of the utility model;

[0022] Figure 3 It is a schematic diagram of the enlarged structure inside the liquid oxygen dispensing box of the utility model;

[0023] Figure 4 It is an enlarged schematic diagram of the relevant structure of the liquid oxygen filling bottle of the present utility model.

[0024] In the figure: 1-liquid oxygen storage tank, 11-support foot, 12-liquid outlet pipe, 13-liquid outlet pipe valve, 14-reflux pipe, 15-reflux pipe valve, 2-cryogenic liquid oxygen pump, 21-infusion pipe, 22-infusion pipe valve, 3-liquid oxygen sub-packaging box, 31-sound absorbing layer, 32-water circulation pipe, 33-liquid oxygen sub-packaging bottle, 34-liquid oxygen sub-packaging branch pipe, 35-connecting block, 351-sub-packaging branch pipe valve, 36-bellows, 37-threaded joint, 38-sub-packaging bottle interface, 39-exhaust pipe, 40-exhaust branch pipe, 4-gas compressor, 41-exhaust pipe valve, 42-exhaust branch pipe valve, 5-circulating water tank, 6-recovery bottle, 61-recovery pipe, 62-recovery pipe valve, 63-reflux pipe, 64-reflux pipe valve. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0026] An embodiment, such as Figures 1 to 4 As shown, this embodiment provides a filling device for a liquid oxygen tank, including a liquid oxygen storage tank 1 for storing liquid oxygen, a cryogenic liquid oxygen pump 2 connected to the end of the liquid oxygen storage tank 1, and a liquid oxygen sub-packaging box 3 connected to the cryogenic liquid oxygen pump 2;

[0027] refer to Figure 1As shown, in this embodiment, a support foot 11 is welded at the bottom of the liquid oxygen storage tank 1, wherein the support foot 11 is preferably three in a circular array, wherein the liquid oxygen storage tank 1 preferably adopts a circular hopper-shaped tank bottom structure, and a liquid outlet pipe 12 is connected to the bottom of the liquid oxygen storage tank 1, wherein the liquid outlet pipe 12 is preferably connected with a liquid outlet pipe valve 13 used in the prior art to realize pipeline opening and closing, and in this embodiment, the end of the liquid outlet pipe 12 is connected to the input end of the cryogenic liquid oxygen pump 2, wherein the output end of the cryogenic liquid oxygen pump 2 is connected with a liquid infusion pipe 21, wherein the liquid infusion pipe 21 is preferably connected with a liquid infusion pipe valve 22 used in the prior art to realize pipeline opening and closing, and in this embodiment, the liquid infusion pipe 21 preferably penetrates into the liquid oxygen sub-packaging box 3, and in this embodiment, the liquid infusion pipe 21 located inside the liquid oxygen sub-packaging box 3 is connected with a plurality of liquid oxygen sub-filling bottles 33, and in this embodiment, each liquid oxygen sub-filling bottle 33 is correspondingly connected with an exhaust branch pipe 40, wherein a plurality of exhaust branch pipes 40 are connected with an exhaust pipe 39, and in this embodiment, the exhaust pipe 39 penetrates A gas compressor 4 is connected to the outside of the liquid oxygen filling tank 3. In this embodiment, each exhaust branch pipe 40 is provided with an exhaust branch pipe valve 42 for opening and closing, and the exhaust pipe 39 is provided with an exhaust pipe valve 41 for opening and closing. In this embodiment, the gas compressor 4 preferably adopts the gas compressor 4 in the prior art, and in this embodiment, the gas compressor 4 is connected to a recovery bottle 6, wherein a recovery pipe 61 is provided at the bottom of the recovery bottle 6 and connected to the gas compressor 4, wherein the recovery pipe 61 is also provided with a recovery pipe valve 62 for opening and closing the pipeline in the prior art, and in this embodiment, the recovery bottle 6 is also connected to a reflux pipe 63, wherein the reflux pipe 63 can be externally connected to a cryogenic pump in the prior art, wherein a reflux pipe 14 is provided at the top of the liquid oxygen storage tank 1 in this embodiment, wherein the reflux pipe 14 is connected to the reflux pipe 63, and in this embodiment, the reflux pipe 63 and the reflux pipe 14 are correspondingly provided with a reflux pipe valve 64 and a reflux pipe valve 15 for opening and closing the pipeline in the prior art.

[0028] refer to Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, the liquid oxygen sub-packaging box 3 is filled with a sound-absorbing layer 31, wherein the sound-absorbing layer 31 is preferably filled with sound-absorbing cotton made of inorganic fibers in the prior art into the liquid oxygen sub-packaging box 3, and in this embodiment, mounting holes are opened or reserved in the sound-absorbing layer 31, wherein the mounting holes correspond to the number and caliber of the liquid oxygen sub-packaging bottles 33, and in this embodiment, a water circulation pipe 32 is connected to the mounting holes, and the inner wall of the water circulation pipe 32 in each mounting hole is correspondingly connected to the liquid oxygen sub-packaging bottle 33, and in this embodiment, the water circulation pipe 32 corresponding to each liquid oxygen sub-packaging bottle 33 is connected after confluence to the outside of the liquid oxygen sub-packaging box 3 and is connected to a circulating water tank 5, wherein the circulating water tank 5 is provided with a water pump in the prior art to realize water circulation in the pipeline, wherein the water in the water circulation pipe 32 is cooled by the outer wall of the liquid oxygen sub-packaging bottle 33 and becomes cold water, and the cold water is transported by the water pump to the place where the equipment needs to be cooled during the liquid oxygen filling process, such as the cooling of the motor and the pump.

[0029] refer to Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, a sub-bottle interface 38 is provided at the end of each liquid oxygen sub-bottle 33 placed in each sound-absorbing layer 31, wherein each liquid oxygen sub-bottle branch 34 in this embodiment is connected to a connecting block 35, wherein the connecting block 35 is connected to a bellows 36 corresponding to the liquid oxygen sub-bottle 33, and in this embodiment, the connecting block 35 and the liquid oxygen sub-bottle branch 34 are in a connected state, and each connecting block 35 is connected to a sub-bottle branch valve 351 for realizing pipeline opening and closing, and in this embodiment, a threaded joint 37 is fixed at the end of the bellows 36, wherein the threaded joint 37 and the sub-bottle interface 38 are threaded and sealed;

[0030] During use, when liquid oxygen needs to be sub-packaged, the liquid oxygen sub-filling bottle 33 is placed in the sound-absorbing layer 31 in the liquid oxygen sub-filling box 3, and the threaded joint 37 is connected to the sub-filling bottle joint 38 at the end of the liquid oxygen sub-filling bottle 33 by pulling the bellows 36. The liquid oxygen filling of the entire or partial liquid oxygen sub-filling bottle 33 is achieved through the low-temperature liquid oxygen pump 2, the infusion tube valve 22 and the liquid oxygen sub-filling valve 351. When it is necessary to adjust the pressure inside the liquid oxygen sub-filling bottle 33, the air therein is extracted through the gas compressor 4 and the oxygen contained therein is collected in the recovery bottle 6, and is returned to the liquid oxygen storage tank 1 through the reflux pipe 63, etc. At the same time, in this embodiment, the low temperature of the outer wall of the liquid oxygen sub-filling bottle 33 is exchanged with heat by setting the water circulation pipe 32, so that the water temperature in the water circulation pipe 32 is reduced to facilitate the cooling of other parts of the subsequent device. At the same time, in this embodiment, the liquid oxygen is filled inside the liquid oxygen sub-filling box 3, and the noise overflow is effectively reduced by the sound-absorbing layer 31.

[0031] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A filling device for a liquid oxygen tank, characterized in that: It comprises a liquid oxygen storage tank (1) for storing and packaging liquid oxygen, a cryogenic liquid oxygen pump (2) connected to the liquid oxygen storage tank (1), and an output end of the cryogenic liquid oxygen pump (2) connected to a liquid oxygen packaging box (3) for packaging liquid oxygen in the liquid oxygen storage tank (1); A plurality of liquid oxygen sub-filling bottles (33) are arranged in the liquid oxygen sub-filling box (3), each of the liquid oxygen sub-filling bottles (33) is provided with a liquid oxygen sub-filling branch pipe (34) connected to the output end of the low-temperature liquid oxygen pump (2), and each of the liquid oxygen sub-filling bottles (33) is provided with an exhaust pipe (39) for achieving independent exhaust therefor, and each of the liquid oxygen sub-filling bottles (33) is provided with a water circulation pipe (32) for collecting the residual cold of the liquid oxygen sub-filling bottle (33) on the outside.

2. A filling device for a liquid oxygen tank according to claim 1, characterized in that: The output end of the cryogenic liquid oxygen pump (2) is provided with a liquid infusion pipe (21) that penetrates into the interior of the liquid oxygen dispensing box (3) and is in communication with each liquid oxygen dispensing branch pipe (34), and the liquid infusion pipe (21) is provided with a liquid infusion pipe valve (22) for realizing opening and closing, and each of the liquid oxygen dispensing branch pipes (34) is provided with a dispensing branch pipe valve (351) for realizing independent opening and closing.

3. A filling device for a liquid oxygen tank according to claim 2, characterized in that: Each of the liquid oxygen sub-filling branch pipes (34) is connected to a connection block (35), and the connection block (35) is connected to a corresponding liquid oxygen sub-filling bottle (33) and is provided with a bellows (36), a threaded joint (37) is fixed to the end of the bellows (36), and the liquid oxygen sub-filling bottle (33) is provided with a sub-filling bottle interface (38) which is hermetically connected to the threaded joint (37).

4. A filling device for a liquid oxygen tank according to claim 3, characterized in that: Each of the liquid oxygen sub-filling bottles (33) is connected to an exhaust branch pipe (40), a plurality of the exhaust branch pipes (40) are connected to an exhaust pipe (39), and the exhaust pipe (39) runs through the liquid oxygen sub-filling box (3) and a gas compressor (4) is provided outside the box, and each of the exhaust branch pipes (40) is provided with an exhaust branch pipe valve (42) for opening and closing, and the exhaust pipe (39) is provided with an exhaust pipe valve (41) for opening and closing.

5. A filling device for a liquid oxygen tank according to claim 4, characterized in that: A recovery pipe (61) connected to a recovery bottle (6) is provided at the output end of the gas compressor (4); the recovery pipe (61) extends to the bottom of the recovery bottle (6); the recovery bottle (6) is further provided with a reflux pipe (63); the recovery pipe (61) is provided with a recovery pipe valve (62) for opening and closing; and the reflux pipe (63) is provided with a reflux pipe valve (64) for opening and closing.

6. A filling device for a liquid oxygen tank according to claim 5, characterized in that: The bottom of the liquid oxygen storage tank (1) is provided with a plurality of supporting feet (11) for supporting, and the bottom of the liquid oxygen storage tank (1) is connected to a liquid outlet pipe (12) connected to the input end of the cryogenic liquid oxygen pump (2), and the top of the liquid oxygen storage tank (1) is connected to a reflux pipe (14) connected to the reflux pipe (63), and the liquid outlet pipe (12) is provided with a liquid outlet pipe valve (13) for opening and closing, and the reflux pipe (14) is also provided with a reflux pipe valve (15) for opening and closing.

7. A filling device for a liquid oxygen tank according to claim 1, characterized in that: The liquid oxygen sub-packaging box (3) is filled with a sound-absorbing layer (31) for sound insulation, and a mounting hole for placing a liquid oxygen sub-packaging bottle (33) is provided in the sound-absorbing layer (31). A water circulation pipe (32) is provided in the mounting hole and is closely connected to the liquid oxygen sub-packaging bottle (33). The water circulation pipe (32) corresponding to each liquid oxygen sub-packaging bottle (33) is connected and then passes through the liquid oxygen sub-packaging box (3) and is connected to a circulating water tank (5) provided outside the liquid oxygen sub-packaging box (3).

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