CN205226878U

CN205226878U - High vacuum insulation cryrogenic storage facilities molecular sieve filling structure

Info

Publication number: CN205226878U
Application number: CN201521039423.0U
Authority: CN
Inventors: 王宏静; 王洪忠
Original assignee: Huida Heavy Industry Co Ltd
Current assignee: Huida Heavy Industry Co Ltd
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2016-05-11
Anticipated expiration: 2025-12-15

Abstract

High vacuum insulation cryrogenic storage facilities molecular sieve filling structure, interior barrel low head bottom is seal structure, and only lateral part packing mouth communicates with each other with the external world, and an aperture plate of bolt fastening and a silk screen are passed through to lateral part packing mouthful inside, and the oral area that the mouth was packed to the lateral part completely cuts off with the outside air through tying up the aluminium foil. The utility model discloses an interior barrel low head only lateral part is packed and mouthful to be communicated with each other with the external world, and creatively uses the aluminium foil shutoff to pack mouthful, can effectively avoid the contact of high vacuum insulation cryrogenic storage facilities molecular sieve and air in follow -up welding process, utilizes the negative pressure suction of intermediate layer evacuation process to make the aluminium foil break simultaneously, has simple structure, design benefit and convenient operation's advantage, has improved high vacuum insulation cryrogenic storage facilities's machining efficiency greatly.

Description

The molecular sieve filled structure of vacuum insulation deep cooling storage facilities

Technical field

The utility model relates to vertical double vacuum cryogenic insulating pressurized container processing technique field, is specifically related to the molecular sieve filled structure of a kind of vacuum insulation deep cooling storage facilities.

Background technique

Vertical double vacuum cryogenic insulating pressurized container, such as vertical LNG storage tank, splendid attire medium is LNG(LNG Liquefied natural gas), adsorbent of molecular sieve is established in lower seal head, now the molecular sieve filled structure of vertical LNG storage tank as shown in Figure 1: molecular sieve 2 is filled mouth 3 by the sidepiece of inner barrel lower seal head 1 and added, macroporous plate 6 is set bottom inner barrel lower seal head, macroporous plate 6 is full of hole communicate with ambient air, after filling, sidepiece is filled mouth to shut, but outside in cylindrical shell fit and welding process, molecular sieve contacts with air always, molecular sieve can be caused to lose efficacy at filling process like this, pumpdown time is elongated, and cause the degree of vacuum of interlayer can not continue to keep, the thermal insulation property of product reduces, inner canister temperature is made to increase, interior media frequently discharges, cause waste.

Model utility content

The utility model provides the molecular sieve filled structure of a kind of vacuum insulation deep cooling storage facilities, and the molecular sieve existed to solve prior art contacts the problem losing efficacy and cause pumpdown time length and affect insulation of equipment performance with air.

The utility model solves the technological scheme that its technical problem adopts:

The molecular sieve filled structure of a kind of vacuum insulation deep cooling storage facilities, it is sealing configuration bottom inner barrel lower seal head, only have sidepiece to fill mouth to communicate with the external world, sidepiece is filled mouth inside and is bolted an aperture plate and silk screen, and sidepiece fills the oral area of mouth by tying up aluminium foil and isolate from outer air.

Working principle of the present utility model is: the molecular sieve activated is filled mouth by the sidepiece of inner barrel lower seal head and filled, by bolt, aperture plate and silk screen are being fixed on sidepiece filling mouth inside, then at once with hot nitrogen displacer molecule sieve, the oral area aluminium foil of sidepiece being filled mouth is in time shut, sieve with air at interior outer tank fit and welding process Middle molecule is like this isolate always, until aluminium foil is subject to suction and breaks after interlayer vacuum-pumping, molecular sieve just contacts with interlayer dielectric, better ensure that the activity of molecular sieve.

Inner barrel lower seal head of the present utility model only has sidepiece filling mouth to communicate with the external world, aluminium foil shutoff is creatively used to fill mouth, can effectively avoid vacuum insulation deep cooling storage facilities in the contact of follow-up welding process Middle molecule sieve with air, utilize the negative-pressure sucking of interlayer evacuation course that aluminium foil is broken simultaneously, have structure simple, design ingenious and easy to operate advantage, substantially increase the work efficiency of vacuum insulation deep cooling storage facilities.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the molecular sieve filled structural representation of prior art;

Fig. 2 is the molecular sieve filled structural representation of the utility model.

In figure, 1 inner barrel lower seal head, 2 molecular sieves, 3 sidepieces fill mouth, 4 aperture plates, 5 aluminium foils, 6 macroporous plates, 7 bolts.

Embodiment

As shown in Figure 2, the molecular sieve filled structure of a kind of vacuum insulation deep cooling storage facilities, it is sealing configuration bottom inner barrel lower seal head 1, only have sidepiece to fill mouth 3 to communicate with the external world, sidepiece is filled mouth 3 inside and is fixed an aperture plate 4 and silk screen by bolt 7, and sidepiece fills the oral area of mouth 3 by tying up aluminium foil 5 and isolate from outer air.

Working principle of the present utility model is: the molecular sieve 2 activated is filled mouth 3 by the sidepiece of inner barrel lower seal head 1 and filled, by bolt 7, aperture plate 4 and silk screen are being fixed on sidepiece filling mouth inside, then at once with hot nitrogen displacer molecule sieve, the oral area aluminium foil 5 of sidepiece being filled mouth is in time shut, sieve with air at interior outer tank fit and welding process Middle molecule is like this isolate always, until aluminium foil is subject to suction and breaks after interlayer vacuum-pumping, molecular sieve just contacts with interlayer dielectric, better ensure that the activity of molecular sieve.

Claims

1. the molecular sieve filled structure of vacuum insulation deep cooling storage facilities, it is characterized in that being sealing configuration bottom inner barrel lower seal head, only have sidepiece to fill mouth to communicate with the external world, sidepiece is filled mouth inside and is bolted an aperture plate and silk screen, and sidepiece fills the oral area of mouth by tying up aluminium foil and isolate from outer air.