CN103322331B

CN103322331B - Low-temperature vacuum pipe connector

Info

Publication number: CN103322331B
Application number: CN201310265178.4A
Authority: CN
Inventors: 柳云兴; 张铁强; 孙国洪
Original assignee: JIANGSU SERLNG NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: JIANGSU SERLNG NEW ENERGY TECHNOLOGY Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2015-02-11
Anticipated expiration: 2033-06-28
Also published as: CN103322331A

Abstract

The invention relates to a low-temperature vacuum pipe connector comprising a liquid access pipe (4), an inner casing (7), a middle casing (6), and an outer casing (1). The head of the liquid access pipe (4) is connected with the bottom of a vacuum pipeline inner pipe (11) through a liquid access pipe connecting joint (9). The head of the outer casing (1) is connected with a vacuum pipeline outer pipe (12). A fiberglass insulating hoop (2) and a retainer ring (3) are connected to the bottom of the outer casing (1). The fiberglass insulating hoop (2) and the retainer ring (3) below the same are sequentially sleeved outside the liquid access pipe (4). The low-temperature vacuum pipe connector is effective in thermal insulation, the liquid access pipe is protected from external impact and distortion, cracks at a weld are avoided, and reliable quality is ensured; in addition, a connecting ring I, the middling casing, the inner casing and a connecting ring III are assembled and welded to form a thermal bridge component, a heat conducting path is added, heat conduction is effectively reduced, and delivery of low-temperature liquid can be insusceptible to external ambient temperature.

Description

Low-temperature vacuum pipe connector

Technical field

The present invention relates to a kind of low-temperature vacuum pipe connector.

Background technique

Cryogenic vacuum pipeline is used for storing cryogenic fluids, and in use, liquid in-out pipe is easily subject to extraneous impact force, thus may be distorted, and so just there will be crack, cannot guarantee the quality of product; And under the impact of external temperature, causing the cryogenic liquide in vacuum pipe easily to evaporate, pressure raises, and there is certain hidden danger.

Summary of the invention

The object of the invention is to overcome above-mentioned deficiency, provide a kind of and there will not be the low-temperature vacuum pipe connector that crack, quality are more reliable, reduce heat conduction.

The object of the present invention is achieved like this:

A kind of low-temperature vacuum pipe connector, comprise liquid in-out pipe, inner sleeve, middle sleeve and outer sleeve, described liquid in-out pipe, inner sleeve, middle sleeve and outer sleeve are nested successively from inside to outside; The head of described liquid in-out pipe is connected with the bottom of pipe in vacuum pipe by liquid in-out pipe jointing; Connecting ring III is provided with between the head of inner sleeve and liquid in-out pipe; Connecting ring I is provided with between the bottom of inner sleeve and middle sleeve; Connecting ring II is provided with between the head of middle sleeve and outer sleeve; The head of outer sleeve is connected with vacuum pipe outer tube; The bottom of outer sleeve is connected with the heat insulation collar of glass fibre reinforced plastics and back-up ring, and the heat insulation collar of glass fibre reinforced plastics and back-up ring are nested in outside liquid in-out pipe up and down successively; The outer wall of outer sleeve is connected with low-temperature (low temperature) vessel outside head.

Low-temperature vacuum pipe connector of the present invention, described connecting ring I and connecting ring III adopt spill connecting ring.

Low-temperature vacuum pipe connector of the present invention, the heat insulation collar of described glass fibre reinforced plastics is petal.

Compared with prior art, the invention has the beneficial effects as follows:

Low-temperature vacuum pipe connector insulation effect of the present invention is good, prevents liquid in-out pipe to be subject to external impact, distortion, avoids occurring fracture at attachment weld, guarantees reliable in quality; In addition after connecting ring I, middle sleeve, inner sleeve, connecting ring III assembly welding, define heat bridge assembly, add thermally conductive pathways, effectively reduce heat conduction, can not affect because of ambient temperature when cryogenic liquide is carried.

Accompanying drawing explanation

Fig. 1 is the structural representation of low-temperature vacuum pipe connector of the present invention.

Fig. 2 is the structural representation of the heat insulation collar of glass fibre reinforced plastics in Fig. 1.

Wherein:

Outer sleeve 1,

The heat insulation collar 2 of glass fibre reinforced plastics,

Back-up ring 3,

Liquid in-out pipe 4,

Connecting ring I 5,

Middle sleeve 6,

Inner sleeve 7,

Connecting ring II 8,

Liquid in-out pipe jointing 9,

Connecting ring III 10,

Pipe 11 in vacuum pipe,

Vacuum pipe outer tube 12,

Low-temperature (low temperature) vessel outside head 13.

Embodiment

See Fig. 1 and Fig. 2, low-temperature vacuum pipe connector of the present invention, comprises liquid in-out pipe 4, inner sleeve 7, middle sleeve 6 and outer sleeve 1, and described liquid in-out pipe 4, inner sleeve 7, middle sleeve 6 and outer sleeve 1 are nested successively from inside to outside.

The head of described liquid in-out pipe 4 is connected with the bottom of pipe in vacuum pipe 11 by liquid in-out pipe jointing 9, is cryogenic liquide in liquid in-out pipe 4;

Connecting ring III 10 is provided with between the head of inner sleeve 7 and liquid in-out pipe 4;

Connecting ring I 5 is provided with between the bottom of inner sleeve 7 and middle sleeve 6;

Connecting ring II 8 is provided with between the head of middle sleeve 6 and outer sleeve 1;

The head of outer sleeve 1 is connected with vacuum pipe outer tube 12; The bottom of outer sleeve 1 is connected with the heat insulation collar 2 of glass fibre reinforced plastics and back-up ring 3, and the heat insulation collar 2 of glass fibre reinforced plastics and back-up ring about 3 are nested in outside liquid in-out pipe 4 successively; The outer wall of outer sleeve 1 is connected with low-temperature (low temperature) vessel outside head 13.

Described outer sleeve 1 adopts thick walled tube, can bear and low-temperature (low temperature) vessel outside head 13 welding stress and relevant impulsive load; Liquid in-out pipe jointing 9 and connecting ring III 10 weld stress are comparatively large, therefore the pipe local in liquid in-out pipe jointing 9 welding position thickeies;

Connecting ring I 5 and connecting ring III 10 adopt spill connecting ring, effectively can reduce the conduction of heat, and are convenient to welding;

The heat insulation collar of glass fibre reinforced plastics 2 adopts nonmetal glass fibre reinforced plastic material, it is a kind of high performance thermoinsulation material, shape is petal, the area of contact of interior outer connector can be reduced, insulation effect is better, its major function be prevent because of external load liquid in-out pipe 4 is impacted, distortion, make attachment weld (weld seam that middle sleeve 6, inner sleeve 7, connecting ring I 5, connecting ring III 10, drain pipe jointing 9 are mutual) occur fracture, guarantee reliable in quality; After connecting ring I 5, middle sleeve 6, inner sleeve 7, connecting ring III 10 assembly welding, define heat bridge assembly, add thermally conductive pathways, effectively reduce heat conduction, can not affect because of ambient temperature when cryogenic liquide is carried, cause the cryogenic liquide in vacuum pipe in pipe 11 to evaporate, pressure raises; The mezzanine space physics of the mezzanine space of low-temperature (low temperature) vessel and vacuum pipe also separates by heat bridge assembly, and two vacuum spaces are independent of each other.

Claims

1. a low-temperature vacuum pipe connector, it is characterized in that: described connecting base comprises liquid in-out pipe (4), inner sleeve (7), middle sleeve (6) and outer sleeve (1), described liquid in-out pipe (4), inner sleeve (7), middle sleeve (6) are nested successively from inside to outside with outer sleeve (1); The head of described liquid in-out pipe (4) is connected with the bottom of managing (11) in vacuum pipe by liquid in-out pipe jointing (9); Connecting ring III (10) is provided with between the head of inner sleeve (7) and liquid in-out pipe (4); Connecting ring I (5) is provided with between the bottom of inner sleeve (7) and middle sleeve (6); Connecting ring II (8) is provided with between the head of middle sleeve (6) and outer sleeve (1); The head of outer sleeve (1) is connected with vacuum pipe outer tube (12); The bottom of outer sleeve (1) is connected with the heat insulation collar of glass fibre reinforced plastics (2) and back-up ring (3), and the heat insulation collar of glass fibre reinforced plastics (2) and back-up ring (3) are nested in liquid in-out pipe (4) outward up and down successively; The outer wall of outer sleeve (1) is connected with low-temperature (low temperature) vessel outside head (13).

2. a kind of low-temperature vacuum pipe connector according to claim 1, is characterized in that: described connecting ring I (5) and connecting ring III (10) adopt spill connecting ring.

3. a kind of low-temperature vacuum pipe connector according to claim 1, is characterized in that: the heat insulation collar of described glass fibre reinforced plastics (2) is for petal.