Pipeline anti-freezing and anti-blocking device for device for obtaining high-purity krypton and xenon gas from liquid oxygen

Abstract

The utility model discloses a pipeline anti-freezing and anti-blocking device for a device for obtaining high-purity krypton and xenon gas from liquid oxygen, and belongs to the technical field of gas purification. The anti-freezing and anti-blocking device comprises an electric tracing band, two groups of fixing frames and two groups of fixing mechanisms. The electric tracing band is wound and attached to the periphery of the pipeline through the aluminum foil band, when production is finished or paused, the pipeline is heated through the electric tracing band, and the phenomenon that the interior of the pipeline is frozen and blocked when flow is low is prevented. The two fixing frames are detachably and fixedly arranged at the two ends of the pipeline. The fixing mechanisms are detachably and oppositely installed between the two sets of fixing frames, and the fixing mechanisms are used for fixing the electric tracing band between the two sets of fixing frames, so that the electric tracing band does not loosen or fall off in the using process, and the optimal heating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas purification, in particular to a pipeline anti-freezing and blocking device for a device for obtaining high-purity krypton-xenon gas from liquid oxygen. Background Art

[0002] As we all know, krypton gas is mainly used in the electronics industry, electric light source industry, gas lasers and plasma flows. Xenon gas is mainly used in semiconductors, electric light sources, aerospace, dark matter research and electronic chip manufacturing. Krypton-xenon gas can be purified from liquid oxygen. The device for obtaining high-purity krypton-xenon gas from liquid oxygen has been widely used in the field of krypton-xenon gas preparation.

[0003] The existing device for obtaining high-purity krypton-xenon gas from liquid oxygen mainly includes a liquid oxygen storage tank, a lean krypton-xenon tower, a krypton-xenon separation tower, a pure krypton tower, a crude xenon tower and a pure xenon tower. The liquid oxygen storage tank is connected to the lean krypton-xenon tower through a liquid oxygen pump and a pipeline, the lean krypton-xenon tower is connected to the krypton-xenon separation tower through an electromagnetic valve and a pipeline, the top of the krypton-xenon separation tower is connected to the pure krypton tower through a pipeline, the bottom of the krypton-xenon separation tower is connected to the crude xenon tower through a second electromagnetic valve and a pipeline, and the top of the crude xenon tower is connected to the pure xenon tower through a pipeline.

[0004] During the production process, the temperature of the gases inside the krypton-xenon separation tower, pure krypton tower, crude xenon tower and pure xenon tower is extremely low. When the production is ended or paused, the low-temperature gas inside the pipeline connecting the krypton-xenon separation tower, pure krypton tower, crude xenon tower and pure xenon tower will flow at a low temperature for a long time, and the pipeline may be frozen and blocked, posing a safety hazard. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline anti-freezing and blocking device for a device for obtaining high-purity krypton-xenon gas from liquid oxygen, aiming to at least solve the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solutions adopted by the utility model are as follows:

[0006] A pipeline anti-freezing and blocking device for a device for obtaining high-purity krypton-xenon gas from liquid oxygen, comprising:

[0007] An electric heating tape is wound around the outer circumference of the pipeline;

[0008] Two sets of fixing frames, the two sets of fixing frames are detachably fixed at two ends of the pipeline;

[0009] Two sets of fixing mechanisms are detachably installed relative to each other between the two sets of fixing frames, and the fixing mechanisms are used to fix the electric heating tape.

[0010] As a further solution of the utility model: the fixing frame includes an upper half ring and a lower half ring which are symmetrically arranged, the upper half ring has two upper side ears which are symmetrically arranged, the lower half ring has two lower side ears which are symmetrically arranged, and fixing bolts are arranged between the upper side ears and the corresponding lower side ears.

[0011] As a further solution of the utility model: the fixing mechanism includes:

[0012] Two sliding bars, the two sliding bars are arranged in parallel between the two sets of fixing frames;

[0013] A plurality of sliders, wherein the plurality of sliders are slidably disposed between the two sliders;

[0014] A plurality of fixing parts, one of which is mounted on each of the sliders, and the plurality of fixing parts are used to fix the electric heating tape.

[0015] As a further solution of the utility model: the fixing member includes:

[0016] A movable plate, the movable plate is arranged directly above the corresponding slider;

[0017] A guide rod, one end of which is fixedly connected to the movable plate, and the other end of which movably passes through the slider and is fixedly connected to a pressure plate;

[0018] An adjusting bolt is passed through the movable plate and the sliding block in sequence, and the adjusting bolt is threadedly connected to a threaded through hole provided in the center of the sliding block.

[0019] As a further solution of the utility model: a bearing is embedded in the center of the movable plate, and the inner ring of the bearing is fixedly sleeved on the upper section of the adjusting bolt.

[0020] As a further solution of the utility model: a silicone gasket is fixedly arranged at the bottom of the pressing plate.

[0021] As a further solution of the utility model: both ends of the slide rod are detachably provided with limited end covers.

[0022] As a further solution of the utility model: a limit screw is also provided on the fixing frame, and the limit screw is used to fix the sliding rod.

[0023] The utility model has at least the following beneficial effects:

[0024] (1) The utility model heats the pipeline by winding an electric heating tape around the outer circumference of the pipeline connecting the krypton-xenon separation tower, the pure krypton tower, the crude xenon tower and the pure xenon tower, thereby preventing freezing and blockage inside the pipeline when the flow rate is low;

[0025] (2) The utility model also provides a fixing frame and a fixing mechanism. The two sets of fixing frames are detachably fixed at both ends of the pipeline. The fixing mechanism is detachably installed relatively between the two sets of fixing frames. The fixing mechanism can further fix the electric heating tape between the two sets of fixing frames to the outer periphery of the pipeline, so that the electric heating tape will not loosen or fall off during use, and the heating effect is optimal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a top view schematic diagram of the overall structure of the utility model (excluding the electric heating belt);

[0029] Figure 3 It is a side view schematic diagram of the fixing frame structure of the utility model;

[0030] Figure 4 It is a side view schematic diagram of the fixing structure of the utility model.

[0031] In the figure: 1. electric heating tape; 2. pipeline; 3. fixing frame; 31. upper half ring; 311. upper side ear; 32. lower half ring; 321. lower side ear; 33. fixing bolt; 4. fixing mechanism; 41. sliding rod; 411. limiting end cover; 42. sliding block; 43. fixing piece; 431. movable plate; 432. guide rod; 433. pressure plate; 434. adjusting bolt; 435. bearing; 436. silicone gasket; 5. limiting screw. DETAILED DESCRIPTION

[0032] 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 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.

[0033] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.

[0034] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] See also Figure 1-4 As shown, an embodiment of the utility model provides a pipeline anti-freezing and blocking device for an apparatus for obtaining high-purity krypton-xenon gas from liquid oxygen, which is used to prevent freezing and blocking of low-temperature gas inside the pipeline connecting the krypton-xenon separation tower, the pure krypton tower, the crude xenon tower and the pure xenon tower due to long-term low flow when the production of the apparatus for obtaining high-purity krypton-xenon gas from liquid oxygen is ended or suspended.

[0036] See also Figure 1 As shown, the pipeline anti-freezing and blocking device includes an electric heating tape 1. The electric heating tape 1 is wrapped and attached to the outer circumference of the pipeline 2 through an aluminum foil tape. When production is finished or paused, the pipeline 2 is heated by the electric heating tape 1 to prevent freezing and blocking inside the pipeline 2 when the flow rate is low. Since the electric heating tape 1 is directly wrapped around the outer circumference of the pipeline 2, the electric heating tape 1 will become loose and fall off during long-term use, resulting in poor heating effect.

[0037] To address this problem, the pipeline anti-freezing and blocking device is further provided with at least two sets of fixing frames 3 and two sets of fixing mechanisms 4. Figure 1 As shown, two groups of fixing frames 3 are detachably fixed at both ends of the pipeline 2; the fixing mechanism 4 is detachably installed relatively between the two groups of fixing frames 3, and the fixing mechanism 4 is used to fix the electric heating tape 1 between the two groups of fixing frames 3, so that the electric heating tape 1 will not loosen or fall off during use, and has the best heating effect.

[0038] See also Figure 3 As shown, the fixing frame 3 includes an upper half ring 31 and a lower half ring 32 symmetrically arranged, the upper half ring 31 is symmetrically arranged with two upper side ears 311, and the lower half ring 32 is symmetrically arranged with two lower side ears 321, and a fixing bolt 33 is arranged between the upper side ears 311 and the corresponding lower side ears 321. During installation, the upper half ring 31 and the lower half ring 32 are relatively fitted to the outer periphery of the end of the pipeline 2, and then the corresponding upper side ears 311 and the lower side ears 321 are fixedly connected together by the fixing bolts 33, and the installation of the fixing frame 3 is completed.

[0039] See also Figure 1 As shown, the fixing mechanism 4 includes two slide bars 41, a plurality of slide blocks 42 and a plurality of fixing members 43. Figure 2As shown, two slide bars 41 are arranged in parallel between two groups of fixing frames 3. It can be understood that the two ends of the slide bars 41 are detachably provided with limit end covers 411, and the limit end covers 411 at both ends are covered after the slide bars 41 are installed; a plurality of sliders 42 are slidably arranged between the two slide bars 41, and the number of sliders 42 is determined according to the number of winding circles of the electric heating tape 1 on the pipeline 2, and a slider 42 corresponds to the upper and lower parts of a circle of the electric heating tape 1 respectively; each slider 42 is installed with a fixing part 43, and a circle of the electric heating tape 1 is limited and fixed by two corresponding fixing parts 43 above and below.

[0040] See also Figure 4 As shown, the fixing member 43 includes a movable plate 431, a guide rod 432, an adjusting bolt 434 and a pressing plate 433. The movable plate 431 is arranged directly above the corresponding slider 42; one end of the guide rod 432 is fixedly connected to the movable plate 431, and the other end of the guide rod 432 movably penetrates the slider 42 and is fixedly connected to the pressing plate 433; the adjusting bolt 434 penetrates the movable plate 431 and the slider 42 in sequence, and the adjusting bolt 434 is threadedly connected to the threaded through hole opened in the center of the slider 42, a bearing 435 is embedded in the center of the movable plate 431, and the inner ring of the bearing 435 is fixedly sleeved on the upper section of the adjusting bolt 434, and further, a silicone gasket 436 is fixedly arranged at the bottom of the pressing plate 433.

[0041] The movable plate 431 can be driven downward by rotating the adjusting bolt 434, and the movable plate 431 drives the pressure plate 433 to move downward through the guide rod 432, and the silicone gasket 436 under the pressure plate 433 can press the electric heating belt 1, and each circle of the electric heating belt 1 is firmly fixed to the outer periphery of the pipeline 2 by the two fixing parts 43 arranged opposite to each other up and down.

[0042] It is understandable that in order to stably fix the slide bar 41 on the fixing frame 3 and prevent the slide bar 41 from being displaced on the fixing frame 3 , a limit screw 5 is further provided on the fixing frame 3 , and the slide bar 41 can be fixed by tightening the limit screw 5 .

[0043] The utility model winds an electric heating tape 1 around the outer periphery of a pipeline 2 connecting a krypton-xenon separation tower, a pure krypton tower, a crude xenon tower and a pure xenon tower, and heats the pipeline 2 through the electric heating tape 1 to prevent freezing and blockage inside the pipeline 2 when the flow rate is low. A fixing mechanism 4 is provided to relatively set two fixing members 43 at the upper and lower sides of each circle of the electric heating tape 1. Under the action of the two fixing members 43, each circle of the electric heating tape 1 is firmly fixed to the outer periphery of the pipeline 2, thereby further fixing the entire electric heating tape 1 to the outer periphery of the pipeline 2, and avoiding the problem of poor heating effect caused by loosening and falling off of the electric heating tape 1 during long-term use.

[0044] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A pipeline anti-freezing device for obtaining high-purity krypton-xenon gas from liquid oxygen, characterized in that: include: An electric heating tape (1), wherein the electric heating tape (1) is wound around and attached to the outer circumference of the pipeline (2); Two sets of fixing frames (3), the two sets of fixing frames (3) are detachably fixedly arranged at two ends of the pipeline (2); Two sets of fixing mechanisms (4), the two sets of fixing mechanisms (4) are detachably installed relative to each other between the two sets of fixing frames (3), and the fixing mechanisms (4) are used to fix the electric heating belt (1).

2. The pipeline anti-freezing device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 1, characterized in that: The fixing frame (3) comprises an upper half ring (31) and a lower half ring (32) which are symmetrically arranged, wherein two upper side ears (311) are symmetrically arranged on the upper half ring (31), and two lower side ears (321) are symmetrically arranged on the lower half ring (32), and fixing bolts (33) are arranged between the upper side ears (311) and the corresponding lower side ears (321).

3. The pipeline anti-freezing and blocking device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 1, characterized in that: The fixing mechanism (4) comprises: Two sliding rods (41), the two sliding rods (41) are arranged in parallel between the two sets of fixing frames (3); A plurality of sliders (42), wherein the plurality of sliders (42) are slidably disposed between the two sliders (41); A plurality of fixing members (43), one fixing member (43) is mounted on each of the sliders (42), and the plurality of fixing members (43) are used to fix the electric heating tape (1).

4. The pipeline anti-freezing and blocking device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 3, characterized in that: The fixing member (43) comprises: A movable plate (431), the movable plate (431) being arranged directly above the corresponding slider (42); A guide rod (432), one end of the guide rod (432) is fixedly connected to the movable plate (431), and the other end of the guide rod (432) movably passes through the slider (42) and is fixedly connected to a pressure plate (433); An adjusting bolt (434), wherein the adjusting bolt (434) sequentially passes through the movable plate (431) and the sliding block (42), and the adjusting bolt (434) is threadedly connected to a threaded through hole provided at the center of the sliding block (42).

5. The pipeline anti-freezing and blocking device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 4, characterized in that: A bearing (435) is embedded in the center of the movable plate (431), and the inner ring of the bearing (435) is fixedly sleeved on the upper section of the adjusting bolt (434).

6. The pipeline anti-freezing and blocking device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 5, characterized in that: A silicone gasket (436) is fixedly arranged at the bottom of the pressing plate (433).

7. The pipeline anti-freezing and blocking device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 3, characterized in that: The two ends of the slide rod (41) are respectively provided with detachable limit end covers (411).

8. The pipeline anti-freezing and blocking device for obtaining high-purity krypton-xenon gas from liquid oxygen according to claim 7, characterized in that: The fixing frame (3) is also provided with a limit screw (5), and the limit screw (5) is used to fix the sliding rod (41).

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