Krypton and xenon mixed liquid recovery device

Abstract

The utility model discloses a krypton and xenon mixed liquid recovery device which comprises a conveying pipe, a plurality of supporting rings are sleeved outside the conveying pipe, a heat preservation pipe is sleeved outside the supporting rings, a cavity is arranged between the conveying pipe and the heat preservation pipe, a heat preservation layer is sleeved outside the heat preservation pipe, an outer skin is sleeved outside the heat preservation layer, and the outer skin is sleeved outside the conveying pipe. The supporting ring is in a six-tooth gear shape, the supporting ring is tightly attached to the inner wall face of the heat preservation pipe and the outer wall face of the conveying pipe, when the device is used, the conveying pipe is separated from the outside through the heat preservation pipe and supported through the supporting ring, a heat preservation and heat insulation material is arranged in a cavity between the conveying pipe and the heat preservation pipe, and therefore the conveying pipe can be used for heat preservation and heat insulation. Damage caused by metal fatigue due to shock cooling and shock heating of the conveying pipe is prevented, impact on the conveying pipe during flowing of krypton and xenon mixed liquid is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of krypton-xenon gas preparation, in particular to a krypton-xenon mixed liquid recovery device. Background Art

[0002] Krypton is a chemical element with the symbol Kr. Its elemental gas is a colorless, odorless and tasteless inert gas. Xenon, with the chemical symbol Xe and atomic number 54, is a rare gas and one of the elements in Group 18 of the periodic table. It is colorless, odorless and tasteless and its chemical properties are extremely inactive.

[0003] The depleted krypton-xenon gas passing through the methane removal system enters the fractionation tower, is cooled by the refluxed cold gas in the heat exchanger, and is then sent to the crude krypton-xenon tower. A condenser is provided at the top of the crude krypton-xenon tower. The reflux liquid required for distillation is produced by cooling the liquid nitrogen produced by the pre-concentration fractionation tower. An electric heater controlled by a thyristor is provided at the bottom of the tower to produce rising steam at the bottom of the crude krypton-xenon tower. Pure krypton-xenon concentrate is intermittently discharged from the bottom of the crude krypton-xenon tower and sent to the krypton-xenon separation tower for separation.

[0004] Since the krypton-xenon mixture is in a low-temperature state, the pipeline is also in a low-temperature state under the influence of the krypton-xenon mixture during recovery. Pipelines that are in a low-temperature state for a long time are prone to metal fatigue. In particular, the temperature of the pipeline in a low-temperature state rises after the transportation is stopped, which can easily cause the pipeline to rupture. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a krypton-xenon mixed liquid recovery device, which solves the technical problems raised in the above background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a krypton-xenon mixed liquid recovery device, including a delivery pipe, a plurality of support rings are sheathed on the outside of the delivery pipe, an insulation pipe is sheathed on the outside of the support ring, a cavity is provided between the delivery pipe and the insulation pipe, an insulation layer is sheathed on the outside of the insulation pipe, and an outer skin is sheathed on the outside of the insulation layer.

[0007] Preferably, the support ring is in the shape of a six-tooth gear, and the support ring is tightly attached to the inner wall surface of the insulation pipe and the outer wall surface of the conveying pipe.

[0008] Preferably, the support ring is made of polytetrafluoroethylene (PTFE) material structure.

[0009] Preferably, the cavity is in a vacuum state or is filled with polyisocyanurate (PIR) material.

[0010] Preferably, the thermal insulation layer adopts a thermal insulation cotton structure.

[0011] Preferably, the outer skin is made of polyethylene material.

[0012] Beneficial Effects

[0013] The utility model provides a krypton-xenon mixed liquid recovery device, which has the following beneficial effects: when the device is in use, the delivery pipe is separated from the outside by a heat preservation pipe and supported by a support ring, and a heat preservation and heat insulation material is arranged in the cavity between the delivery pipe and the heat preservation pipe to prevent the delivery pipe from being damaged due to metal fatigue caused by sudden cooling and heating, and also reduce the impact of the krypton-xenon mixed liquid on the delivery pipe when it flows, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of a krypton-xenon mixed liquid recovery device.

[0015] In the figure: 1. conveying pipe; 2. support ring; 3. insulation pipe; 4. cavity; 5. insulation layer; 6. outer skin. DETAILED DESCRIPTION

[0016] 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 implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0017] See also Figure 1 The utility model provides a technical solution for a krypton-xenon mixed liquid recovery device: a krypton-xenon mixed liquid recovery device, comprising a delivery pipe 1, a plurality of support rings 2 are sheathed outside the delivery pipe 1, an insulation pipe 3 is sheathed outside the support ring 2, a cavity 4 is provided between the delivery pipe 1 and the insulation pipe 3, an insulation layer 5 is sheathed outside the insulation pipe 3, and an outer skin 6 is sheathed outside the insulation layer 5.

[0018] Furthermore, the support ring 2 is in the shape of a six-tooth gear, and the support ring 2 is tightly attached to the inner wall surface of the insulation pipe 3 and the outer wall surface of the conveying pipe 1 .

[0019] Furthermore, the support ring 2 adopts a polytetrafluoroethylene PTFE material structure. PTFE is an inert polymer material that is not affected by low temperature and has excellent corrosion resistance and insulation properties. It performs well in ultra-low temperature environments and reduces a certain amount of impact on the pipeline caused by the flow of the mixed liquid when the conveying pipe 1 conveys the mixed liquid, thereby protecting the conveying pipe 1.

[0020] Furthermore, the cavity 4 is in a vacuum state or filled with polyisocyanurate PIR material, and the vacuum heat insulation effect is good. Polyisocyanurate PIR is an ideal organic low-temperature heat insulation material with the characteristics of small thermal conductivity, light weight, shock resistance and strong adaptability.

[0021] Furthermore, the heat-insulating layer 5 adopts a heat-insulating cotton structure to reduce the heat transfer of the conveying pipe 1, slow down the heating and cooling time of the conveying pipe 1, and reduce metal fatigue.

[0022] Furthermore, the outer skin 6 is made of polyethylene material, which has good flexibility and plasticity, and is waterproof, corrosion-resistant, and insulating. It has high wear resistance, can protect the pipeline surface from mechanical damage, and can also prevent condensed water from entering and forming frost on the outer wall of the insulation pipe 3.

[0023] Embodiment: When the device is in use, since the mixed liquid is in a low temperature state, the mixed liquid is transported from the transport pipe 1 during the recovery process.

[0024] The support ring 2 fixes and supports the conveying pipe 1 in the insulation pipe 3. When the mixed liquid is being conveyed, the impact caused by the flow of the material will be transmitted to the support ring 2. The support ring 2 disperses the impact force, reduces the impact force received by the conveying pipe 1, and prolongs its service life.

[0025] The support ring 2 is made of polytetrafluoroethylene (PTFE) material. PTFE is an inert polymer material that is not affected by low temperatures, has excellent corrosion resistance and insulation properties, performs well in ultra-low temperature environments, and reduces heat transfer.

[0026] The cavity 4 between the conveying pipe 1 and the insulation pipe 3 is in a vacuum state or filled with polyisocyanurate PIR material, and the vacuum insulation effect is good. Polyisocyanurate PIR is an ideal organic low-temperature insulation material with the characteristics of small thermal conductivity, light weight, shock resistance, and strong adaptability. It reduces heat transfer, prolongs the heating and cooling time of the conveying pipe 1 caused by conveying the mixed liquid, prevents the conveying pipe 1 from rupture caused by metal fatigue due to the increase in temperature after sudden cooling, and prolongs the service life.

[0027] Both the insulation layer 5 and the outer skin 6 can protect the insulation pipe 3 and extend its service life.

[0028] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A krypton-xenon mixed liquid recovery device, comprising a delivery pipe (1), characterized in that: The conveying pipe (1) is sheathed with a plurality of support rings (2), the support rings (2) are sheathed with a thermal insulation pipe (3), a cavity (4) is provided between the conveying pipe (1) and the thermal insulation pipe (3), the thermal insulation pipe (3) is sheathed with a thermal insulation layer (5), and the thermal insulation layer (5) is sheathed with an outer skin (6).

2. The krypton-xenon mixed liquid recovery device according to claim 1, characterized in that: The support ring (2) is in the shape of a six-tooth gear, and the support ring (2) is tightly attached to the inner wall surface of the insulation pipe (3) and the outer wall surface of the delivery pipe (1).

3. The krypton-xenon mixed liquid recovery device according to claim 1, characterized in that: The support ring (2) is made of polytetrafluoroethylene (PTFE) material.

4. The krypton-xenon mixed liquid recovery device according to claim 1, characterized in that: The cavity (4) is in a vacuum state or is filled with polyisocyanurate (PIR) material.

5. The krypton-xenon mixed liquid recovery device according to claim 1, characterized in that: The thermal insulation layer (5) adopts a thermal insulation cotton structure.

6. The krypton-xenon mixed liquid recovery device according to claim 1, characterized in that: The outer skin (6) is made of polyethylene material.

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