CN2449046Y

CN2449046Y - Air discharge vacuum pumping joint for package layer of vertical Dewar bottle

Info

Publication number: CN2449046Y
Application number: CN 00258447
Authority: CN
Inventors: 薛英杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-12
Filing date: 2000-10-12
Publication date: 2001-09-19
Anticipated expiration: 2010-10-12

Abstract

The utility model relates to an air discharge vacuum pumping joint for the package layer of a vertical Dewar bottle, which is an installation kit used by matching a small cryogenic liquid vessel used for storing and transporting the liquefied gas (liquid oxygen, nitrogen and argon) and the package layer of the Dewar bottle. The utility model is characterized in that the utility model is composed of a connecting body, the outer wall of which is provided with one or more than one open slot, and the connecting body, the outer wall of which is provided with one or more than one through hole communicated with middle through holes. The connecting body is arranged on the liner of the Dewar bottle and is connected with the package layer packed by package materials into a whole. The getter between each layer of the heat-insulated package layers is easy to be discharged outside the package layer through the holes and slots of a joint, and the vacuum pumping and the air pumping resistance of the gas of the package layer is obviously reduced. The quality of vacuum pumping is high, the time is shortened, and heat-insulated effect of the Dewar bottle is better.

Description

The venting evacuated joint of vertical Dewar vessel wrapping layer

The utility model relate to a kind of be used for storing, the small-sized cryogenic liquid vessel of transport liquefied gases (liquid oxygen, liquid nitrogen, liquid argon), the matching used Component of wrapping layer of Dewar vessel, the venting evacuated joint of vertical Dewar vessel wrapping layer.

Dewar vessel is penetrated heat for reducing the width of cloth significantly, and reach the purpose of thermal insulation, need outside the inner bag of splendid attire liquid oxygen or other liquid gas, the screen material of ten multilayers that parcel or winding fit tightly or the air-locked low radiation rate of tens of layers and the Spacer of lower thermal conductivity, and need vacuumizing processing in the bottle case.And these wrapper materials mostly are porous medium greatly, and are air-breathing, moisture absorption is strong.Simultaneously also need place the active carbon getter at the outer surface of inner bag, these materials also can be emitted a large amount of gases in heating, vacuumizing, and the gas in the wrapper material can only along the course micro-gap in week or axial diffusion outside wrapping layer, resistance is very big so the interior gas of wrapping layer vacuumizes, bleeds.Thereby low, outer high unbalanced degree of vacuum in having formed, gas pressure intensity increases, and heat output is increased.Need to spend the long period, and need to improve vacuum pumping technique for vacuumizing, increased cost of production for this reason the punching of wrapping layer.

The purpose of this utility model is to provide a kind of venting evacuated joint of vertical Dewar vessel wrapping layer, uses this joint can reduce the Dewar vessel resistance of bleeding, and accelerates vacuum pumping rate, improves and vacuumize quality, make degree of vacuum even.

The utility model is achieved in that the venting evacuated joint a. of vertical Dewar vessel wrapping layer is made of the connecting body that has the opening slot more than 1 and 1 on the outer wall; B is made of the connecting body that has the through hole that communicates more than 1 and 1 and with intermediate throughholes on the outer wall; Described connecting body is installed on the Dewar vessel inner bag, and links into an integrated entity with the wrapping layer of being wrapped up by wrapper material.

Fig. 1. structural representation of the present utility model;

Fig. 2. the A-A view of Fig. 1;

Fig. 3. the alternative plan structural representation;

Fig. 4. the B-B view of Fig. 3;

Fig. 5. third party's case structural representation;

Fig. 6. the plan view of Fig. 5;

Fig. 7. cubic case structural representation;

Fig. 8. the plan view of Fig. 7;

Fig. 9. the user mode reference drawing;

Figure 10. the user mode reference drawing;

Figure 11. the user mode reference drawing;

Figure 12. the user mode reference drawing.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Connecting body is joint (1), joint (3), (5), (7), (9).

Joint (1) is the middle cylindrical body that through hole is arranged, and 4 uniform through holes are vent hole (2) to have two circles to communicate also with intermediate throughholes on the outer wall.Also can be 1-8 through hole as required.

Joint (3) is the middle cylindrical body that through hole is arranged, and has on the outer wall with intermediate throughholes to communicate and 4 uniform waist shape vent holes (4).

Joint (5) is the middle cylindrical body that through hole is arranged, and outer wall surface has 4 uniform rectangular aperture grooves, is air bleed slot (6), or 1-8 air bleed slot arranged.

Joint (7) the 4 rectangular aperture grooves uniform for outer wall surface has are air bleed slot (8), and the lower end does not have the cylindrical body of air bleed slot (8).Or 1-8 air bleed slot.

Joint (9) is the middle cylindrical body that through hole is arranged, and outer wall surface has 4 circles, 2 circles through hole not of uniform size, is vent hole (2), (2) '.All joint parts are made by metallic material.

During use, two identical joints (3) are distinguished assembly welding on the two ends of Dewar vessel inner bag (13), again wrapper material is become laminated form along helix, wrapping covers adiabatic wrapping layer (10) from level to level, its wrapper material, wrapping mode are the same with prior art, the upper end that bandages back joint (3) exposes outside wrapping layer (10), as shown in figure 10, so respectively wrap up in the layer material and the gas of each interlayer, just can enter intermediate throughholes along the lip-deep vent hole of joint (3) (4), be diffused into outside the wrapping layer (10), be convenient to vacuumize.

At Dewar vessel inner bag outer surface, wrap up the most inboard of layer (10), generally also need be placed with molecular sieve or active carbon getter (12), its moisture absorption is very strong, but certain air-breathing property is arranged also, at this moment for preventing air bleed slot, the vent hole on getter (12) packed joint, need coated metal silk cloth (11) on the outer surface of joint (9) and getter (12) contact position.As Fig. 9, shown in Figure 12.

Two joints (1), (9) are placed on respectively on the upper/lower terminal of inner bag (13), wrapper material is equally wrapped up by the method for prior art, as shown in Figure 9, the gas of each adiabatic wrapping each interlayer of layer and getter is just easily by vent hole (2), (2) on joint (1), (9) like this ' discharge, outside wrapping layer (10).

Only also can adopt as required with a joint (3), place it on the lower end position of inner bag (13), use wrapper material again, wrapping covers into wrapping layer (10), and the upper end is connected with neck tube (14), as shown in figure 11.

If getter (12) is placed on inner bag (13) upper end, then joint (9) is placed on inner bag (13) upper end, and is in contact with it and wraps up, as shown in figure 12.

The utility model is compared with prior art: install venting additional at inner bag upper and lower end or an end and take out because having adopted Empty joint links together joint and each wrapping layer, the gas of adiabatic wrapping each interlayer of layer and getter, Be discharged to outside the wrapping layer by the hole on the joint and groove easily. Gas in the wrapping layer resistance that vacuumizes, bleeds Obviously reduce. And each wrapping layer is basic identical to the distance of joint, and then the vacuum of each interlayer is substantially approaching, So the time that vacuumizes significantly shortens, and has reduced production cost. And vacuumize the quality raising, thereby make Dewar The insulation effect of bottle is better.

Claims

1. the venting evacuated joint of a vertical Dewar vessel wrapping layer is characterized in that a. is made of the connecting body that has the opening slot more than 1 and 1 on the outer wall; B is made of the connecting body that has the through hole that communicates more than 1 and 1 and with intermediate throughholes on the outer wall; Described connecting body is installed on the Dewar vessel inner bag, and links into an integrated entity with the wrapping layer of being wrapped up by wrapper material (10).

2. joint according to claim 1 is characterized in that connecting body is joint (1), (3), (5), (7), (9) one ends and inner bag (13) outer surface assembly welding, and the other end stretches out outside the wrapping layer (10).

3. joint according to claim 1 and 2 is characterized in that joint (1) is the middle cylindrical body that through hole is arranged, and has two circles to communicate with intermediate throughholes and uniform 4 through hole vent holes (2) on the outer wall, or 1-8 vent hole.

4. joint according to claim 1 and 2 is characterized in that joint (3) is the middle cylindrical body that through hole is arranged, and has on the outer wall with intermediate throughholes to communicate and 4 uniform waist shape vent holes (4).

5. joint according to claim 1 and 2 is characterized in that joint (5) is the middle cylindrical body that through hole is arranged, and it is air bleed slot (6) that outer wall surface has 4 uniform rectangular aperture grooves, or 1-8 air bleed slot.

6. joint according to claim 1 and 2 it is characterized in that joint (7) the 4 rectangular aperture grooves uniform for outer wall surface has, is air bleed slot (8), and the lower end does not have the cylindrical body of air bleed slot (8), or 1-8 air bleed slot.

7. joint according to claim 1 and 2 is characterized in that joint (9) is the middle cylindrical body that through hole is arranged, and it is vent hole (2), (2) that outer wall surface has 4 circles, 2 circles through hole not of uniform size ', all joint parts are made by metallic material.

8. joint according to claim 1 is characterized in that joint (1), (9) and two joints (3) are installed in the upper/lower terminal of inner bag (13) respectively.

9. joint according to claim 1 is characterized in that joint (9), (3) are installed in respectively on the upper and lower end of inner bag (13).